WNS (WNS) 20-F 17 May 22 2022 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Mar. 31, 2022shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Title of 12(b) Security	American Depositary Shares, each represented by
Trading Symbol	WNS
Security Exchange Name	NYSE
Entity Registrant Name	WNS (Holdings) Limited
Entity Central Index Key	0001356570
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Incorporation, State or Country Code	Y9
Entity Address, Address Line One	Gate 4, Godrej & Boyce Complex
Entity Address, Address Line Two	Pirojshanagar
Entity Address, Address Line Three	Vikhroli (W)
Entity Address, City or Town	Mumbai
Entity Address, Country	IN
Entity Address, Postal Zip Code	400 079
Entity Emerging Growth Company	false
Entity Filer Category	Large Accelerated Filer
Document Annual Report	true
Document Shell Company Report	false
Entity Interactive Data Current	Yes
Document Registration Statement	false
Document Transition Report	false
Entity Common Stock, Shares Outstanding	48,849,907
ICFR Auditor Attestation Flag	true
Document Accounting Standard	International Financial Reporting Standards
Entity File Number	001-32945
Auditor Name	GRANT THORNTON BHARAT LLP
Auditor Firm ID	2416
Auditor Location	Gurugram, India
Business Contact [Member]
Document Information [Line Items]
Entity Address, Address Line One	Gate 4, Godrej & Boyce Complex
Entity Address, Address Line Two	Pirojshanagar
Entity Address, Address Line Three	Vikhroli (W)
Entity Address, City or Town	Mumbai
Entity Address, Country	IN
Entity Address, Postal Zip Code	400 079
Contact Personnel Name	Gopi Krishnan
Contact Personnel Email Address	gopi.krishnan@wns.com
City Area Code	91-22
Local Phone Number	4095-2100

Consolidated Statements of Fina

Consolidated Statements of Financial Position - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Current assets:
Cash and cash equivalents	$ 108,153	$ 105,633
Investments	211,398	203,676
Trade receivables, net	100,522	83,118
Unbilled revenue	87,032	66,403
Funds held for clients	11,643	12,139
Derivative assets	10,351	7,974
Contract assets	10,169	7,753
Prepayments and other current assets	28,822	23,211
Total current assets	568,090	509,907
Non-current assets:
Goodwill	123,537	123,979
Intangible assets	65,421	65,141
Property and equipment	49,257	52,272
Right-of-use assets	142,623	166,766
Derivative assets	3,249	1,749
Deferred tax assets	34,765	33,022
Investments	93,442	85,875
Trade receivables, net	0	269
Contract assets	39,833	27,136
Other non-current assets	44,275	40,032
Total non-current assets	596,402	596,241
TOTAL ASSETS	1,164,492	1,106,148
Current liabilities:
Trade payables	27,829	28,015
Provisions and accrued expenses	36,752	23,933
Derivative liabilities	6,042	4,491
Pension and other employee obligations	105,768	82,586
Current portion of long-term debt	0	16,748
Contract liabilities	13,723	12,685
Current taxes payable	2,279	1,489
Lease liabilities	26,954	26,027
Other liabilities	11,351	11,492
Total current liabilities	230,698	207,466
Non-current liabilities:
Derivative liabilities	831	2,037
Pension and other employee obligations	16,238	19,589
Contract liabilities	13,314	16,645
Lease liabilities	140,040	165,880
Other non-current liabilities	78	211
Deferred tax liabilities	9,290	10,228
Total non-current liabilities	179,791	214,590
TOTAL LIABILITIES	410,489	422,056
Shareholders' equity:
Share capital (ordinary shares $0.16 (10 pence) par value, authorized 60,000,000 shares; issued: 48,849,907 shares and 50,502,203 shares each as at March 31, 2022 and March 31, 2021, respectively)	7,751	7,977
Share premium	110,327	227,708
Retained earnings	818,402	688,957
Other reserves	2,656
Other components of equity	(185,133)	(161,987)
Total shareholder's equity, including shares held in treasury	754,003	762,655
Less: Nil shares as at March 31, 2022 and 1,100,000 shares as at March 31, 2021, held in treasury, at cost	0	(78,563)
Total shareholders' equity	754,003	684,092
TOTAL LIABILITIES AND EQUITY	$ 1,164,492	$ 1,106,148

Consolidated Statements of Fi_2

Consolidated Statements of Financial Position (Parenthetical) - $ / shares	Mar. 31, 2022	Mar. 31, 2021
Statement of financial position [abstract]
Share capital, par value	$ 0.16	$ 0.16
Share capital, authorized	60,000,000	60,000,000
Share capital, issued	48,849,907	50,502,203
Shares held in treasury, shares	0	1,100,000

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Profit or loss [abstract]
Revenue	$ 1,109,800	$ 912,643	$ 928,258
Cost of revenue	735,165	587,205	583,920
Gross profit	374,635	325,438	344,338
Operating expenses:
Selling and marketing expenses	53,860	49,613	52,802
General and administrative expenses	151,124	126,295	128,592
Foreign exchange (gain)/loss, net	(5,959)	754	(3,382)
Impairment of goodwill	0	0	4,085
Amortization of intangible assets	11,550	13,722	15,653
Operating profit	164,060	135,054	146,588
Other income, net	(13,867)	(12,464)	(14,375)
Finance expense	13,387	14,827	17,011
Profit before income taxes	164,540	132,691	143,952
Income tax expense	32,439	30,074	27,183
Profit after tax	$ 132,101	$ 102,617	$ 116,769
Earnings per ordinary share
Basic	$ 2.70	$ 2.06	$ 2.35
Diluted	$ 2.58	$ 1.97	$ 2.24

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Statement of comprehensive income [abstract]
Profit after tax	$ 132,101	$ 102,617	$ 116,769
Items that will not be reclassified to profit or loss:
Pension adjustment, net of tax	1,146	(1,164)	(610)
Items that will be reclassified subsequently to profit or loss:
Current period gain	9,395	2,684	8,717
Net change in time value of option contracts designated as cash flow hedges	647	(1,204)	(2,919)
Reclassification to profit or loss	(3,327)	(3,555)	(13,409)
Foreign currency translation (loss) /gain	(28,309)	36,713	(42,196)
Income tax (expense)/benefit relating to above	(2,698)	(1,089)	2,939
Other comprehensive income/(loss), net of taxes - Items that will be reclassified subsequently to profit or loss	(24,292)	33,549	(46,868)
Total other comprehensive (loss)/income, net of taxes	(23,146)	32,385	(47,478)
Total comprehensive income	$ 108,955	$ 135,002	$ 69,291

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($)	Total	Adoption Of IFRS 16 [Member]	Restated Adjusted balance [member]	Share capital [member]	Share capital [member]Restated Adjusted balance [member]	Share Premium [member]	Share Premium [member]Restated Adjusted balance [member]	Retained earnings [member]	Retained earnings [member]Adoption Of IFRS 16 [Member]	Retained earnings [member]Restated Adjusted balance [member]	Other components of equity: Foreign Currency translation reserve [member]	Other components of equity: Foreign Currency translation reserve [member]Restated Adjusted balance [member]	Other components of equity: Cash flow hedging reserve [member]	Other components of equity: Cash flow hedging reserve [member]Restated Adjusted balance [member]	Other components of equity: Pension adjustments [member]	Other components of equity: Pension adjustments [member]Restated Adjusted balance [member]	Treasury shares [member]	Treasury shares [member]Restated Adjusted balance [member]	Other reserves [member]	[1]
Beginning balance at Mar. 31, 2019	$ 552,419,000	$ (8,574,000)	$ 543,845,000	$ 8,056,000	$ 8,056,000	$ 269,529,000	$ 269,529,000	$ 478,145,000	$ (8,574,000)	$ 469,571,000	$ (155,195,000)	$ (155,195,000)	$ 5,954,000	$ 5,954,000	$ 2,347,000	$ 2,347,000	$ (56,417,000)	$ (56,417,000)
Beginning balance, shares at Mar. 31, 2019				51,153,220	51,153,220												1,101,300	1,101,300
Shares issued for exercised options and RSUs (Refer Note 24)				$ 99,000		(99,000)
Shares issued for exercised options and RSUs (Refer Note 24), shares				780,420
Cancellation of treasury shares (Refer Note 19)				$ (281,000)		(119,873,000)											$ 120,154,000
Cancellation of treasury shares (Refer Note 19), shares				(2,200,000)													(2,200,000)
Purchase of treasury shares (Refer note 19)	(63,737,000)																$ (63,737,000)
Purchase of treasury shares (Refer note 19), shares																	1,098,700
Share-based compensation expense (Refer note 24)	37,520,000					37,520,000
Excess tax benefits relating to share-based options and RSUs	191,000					191,000
Transactions with owners	(26,026,000)			$ (182,000)		(82,261,000)											$ 56,417,000
Transactions with owners, shares				(1,419,580)													(1,101,300)
Profit after tax	116,769,000							116,769,000
Other comprehensive income/(loss), net of taxes	(47,478,000)										(42,196,000)		(4,672,000)		(610,000)
Total comprehensive income/(loss) for the period	69,291,000							116,769,000			(42,196,000)		(4,672,000)		(610,000)
Ending balance at Mar. 31, 2020	587,110,000			$ 7,874,000		187,268,000		586,340,000			(197,391,000)		1,282,000		1,737,000		$ 0
Ending balance, shares at Mar. 31, 2020				49,733,640													0
Shares issued for exercised options and RSUs (Refer Note 24)				$ 103,000		(103,000)
Shares issued for exercised options and RSUs (Refer Note 24), shares				768,563
Transaction charges on cancellation of treasury shares (Refer Note 19)	(55,000)					(55,000)
Purchase of treasury shares (Refer note 19)	(78,563,000)																$ (78,563,000)
Purchase of treasury shares (Refer note 19), shares																	1,100,000
Share-based compensation expense (Refer note 24)	38,230,000					38,230,000
Excess tax benefits relating to share-based options and RSUs	2,368,000					2,368,000
Transactions with owners	(38,020,000)			$ 103,000		40,440,000											$ (78,563,000)
Transactions with owners, shares				768,563													1,100,000
Profit after tax	102,617,000							102,617,000
Other comprehensive income/(loss), net of taxes	32,385,000										36,713,000		(3,164,000)		(1,164,000)
Total comprehensive income/(loss) for the period	135,002,000							102,617,000			36,713,000		(3,164,000)		(1,164,000)
Ending balance at Mar. 31, 2021	684,092,000			$ 7,977,000		227,708,000		688,957,000			(160,678,000)		(1,882,000)		$ 573,000		$ (78,563,000)		$ 0
Ending balance, shares at Mar. 31, 2021				50,502,203													1,100,000
Shares issued for exercised options and RSUs (Refer Note 24)				$ 76,000		(76,000)
Shares issued for exercised options and RSUs (Refer Note 24), shares				547,704
Cancellation of treasury shares (Refer Note 19)				$ (302,000)		(163,409,000)											$ 163,711,000
Cancellation of treasury shares (Refer Note 19), shares				(2,200,000)													(2,200,000)
Purchase of treasury shares (Refer note 19)	(85,148,000)																$ (85,148,000)
Purchase of treasury shares (Refer note 19), shares																	1,100,000
Share-based compensation expense (Refer note 24)	44,165,000					44,165,000											$ 0
Excess tax benefits relating to share-based options and RSUs	1,939,000					1,939,000											0
Transfer to other reserves								(5,067,000)											5,067,000
Transfer from other reserves on utilization								2,411,000											(2,411,000)
Transactions with owners	(39,044,000)			$ (226,000)		(117,381,000)		(2,656,000)									$ 78,563,000		2,656,000
Transactions with owners, shares				(1,652,296)											0		(1,100,000)
Profit after tax	132,101,000							132,101,000
Other comprehensive income/(loss), net of taxes	(23,146,000)										(28,309,000)		4,017,000		$ 1,146,000		$ 0		0
Total comprehensive income/(loss) for the period	108,955,000							132,101,000			(28,309,000)		4,017,000		1,146,000		0		0
Ending balance at Mar. 31, 2022	$ 754,003,000			$ 7,751,000		$ 110,327,000		$ 818,402,000			$ (188,987,000)		$ 2,135,000		$ 1,719,000		$ 0		$ 2,656,000
Ending balance, shares at Mar. 31, 2022				48,849,907
[1]	Other reserves include the Special Economic Zone Re-Investment Reserve created out of the profits of eligible Special Economic Zones (“SEZ”) units in terms of the provisions of the Indian Income-tax Act, 1961. Further, these provisions require the reserve to be utilized by the Company for acquiring new plant and machinery for the purpose of its business (Refer Note 25).

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Profit after tax	$ 132,101	$ 102,617	$ 116,769
Adjustments to reconcile profit after tax to net cash generated from operating activities:
Depreciation and amortization	61,553	62,645	62,873
Impairment of goodwill	0		4,085
Share-based compensation expense	44,165	38,230	37,520
Amortization of debt issue cost	52	126	231
Allowances for expected credit losses ("ECL")	(115)	924	712
Unrealized exchange (gain)/loss, net	(4,502)	8,383	44
Income tax expense	32,439	30,074	27,183
Interest expense	13,335	14,701	16,780
Interest income	(3,772)	(3,702)	(3,840)
Income from marketable securities	(7,137)	(6,352)	(7,547)
(Gain)/loss on sale of property and equipment	(329)	67	(23)
Deferred rent	0	0	(2)
Rent concession	(21)	(416)
Excess tax benefit from share-based compensation expense	(1,062)	(729)	(998)
Unrealized loss/(gain) on derivative instruments	3,254	(4,145)	4,110
Changes in operating assets and liabilities:
Trade receivables and unbilled revenue	(39,667)	4,994	(13,483)
Other assets	(24,325)	7,174	(24,154)
Trade payables	(1,456)	(4,412)	13,876
Contract liabilities	(2,627)	(2,687)	19,017
Other liabilities	34,255	9,288	18,991
Cash generated from operating activities before interest and income taxes	236,141	256,780	272,144
Income taxes paid	(38,872)	(33,535)	(31,180)
Interest paid	(13,392)	(14,454)	(15,180)
Interest received	3,577	4,935	2,837
Net cash provided by operating activities	187,454	213,726	228,621
Cash flows from investing activities:
Payment of contingent considerations in relation to acquisitions	0	0	(1,745)
Payment for property and equipment and intangible assets	(28,327)	(26,530)	(27,860)
Proceeds from sale of property and equipment	401	189	82
Investment in fixed deposits	(99,472)	(73,736)	(75,977)
Proceeds from maturity of fixed deposits	95,106	82,592	43,258
Marketable securities (purchased) / sold, net (short-term)	(15,951)	(75,797)	(37,410)
Profit on sale of marketable securities	2,321	505	2,657
Investment in mutual funds			(118)
Proceeds from redemption of mutual funds	0	0	125
Net cash used in investing activities	(48,798)	(92,777)	(96,988)
Cash flows from financing activities:
Payment for repurchase of shares	(85,038)	(78,563)	(63,737)
Transaction charges on cancellation of treasury shares	(110)	(55)
Repayment of long-term debt	(16,800)	(16,800)	(28,200)
Principal payment for lease liabilities	(26,235)	(23,073)	(20,793)
Excess tax benefit from share-based compensation expense	1,062	729	998
Net cash used in financing activities	(127,121)	(117,762)	(111,732)
Exchange difference on cash and cash equivalents	(9,015)	5,517	(8,416)
Net change in cash and cash equivalents	2,520	8,704	11,485
Cash and cash equivalents at the beginning of the year	105,633	96,929	85,444
Cash and cash equivalents at the end of the year	108,153	105,633	96,929
Denali Sourcing Services Inc. [member]
Cash flows from investing activities:
Payment of contingent considerations in relation to acquisitions			(1,745)
Non-cash transactions: Investing activities
(i) Liability towards property and equipment and intangible assets purchased on credit	8,604	3,036	6,314
Value Edge Research Services Private Limited [member]
Non-cash transactions: Investing activities
(ii) Release of restricted cash, held in escrow	0	$ 0	$ 1,535
CEPROCS S.R.L. [member]
Cash flows from investing activities:
Acquisition of subsidiaries and businesses, net of cash acquired	(566)
MOL IPS [member]
Cash flows from investing activities:
Acquisition of subsidiaries and businesses, net of cash acquired	(2,310)
Non-cash transactions: Investing activities
(iii) Deferred consideration payable towards acquisition	$ 493

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Parenthetical) - Long term debt (including current portion) [member] - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement [LineItems]
Opening Balance	[1]	$ 16,748	$ 33,422
Cash flows	[1]	(16,800)	(16,800)
Non-cash changes amortization of debt issuance cost	[1]	52	126
Closing balance	[1]	$ 0	$ 16,748
[1]	For reconciliation of lease liabilities Refer Note 12.

Company overview

Company overview	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Company overview	1. Company overview WNS (Holdings) Limited (“WNS Holdings”), along with its subsidiaries (collectively, “the Company”), is a global business process management (“BPM”) company with client service offices in Sydney (Australia), Canada, Dubai (United Arab Emirates), Germany, London (UK), New Jersey (US), New Zealand, Singapore and Switzerland and delivery centers in the People’s Republic of China (“China”), Costa Rica, India, the Philippines, Poland, Romania, Republic of South Africa (“South Africa”), Sri Lanka, Turkey, Spain, the United Kingdom (“UK”) and the United States (“US”). The Company’s clients are primarily in the travel, shipping and logistics services, utilities, retail and consumer products group, banking and financial and hi-tech and professional services, insurance services, healthcare, auto claims and others. WNS Holdings is incorporated in Jersey, Channel Islands and maintains a registered office in Jersey at 22, Grenville Street, St Helier, Jersey JE4 8PX. These consolidated financial statements were approved by the Board of Directors and authorized for issue on May 17

Summary of significant accounti

Summary of significant accounting policies	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of significant accounting policies	2. Summary of significant accounting policies a. Basis of preparation These consolidated financial statements have been prepared in compliance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standard Board (“IASB”). These consolidated financial statements correspond to the classification provisions contained in IAS 1 (revised), “Presentation of Financial Statements.” Accounting policies applied are consistent with the policies that were applied for the preparation of the consolidated financial statements for the year ended March 31, 2021. b. Basis of measurement These consolidated financial statements have been prepared on a historical cost convention and on an accrual basis, except for the following material items that have been measured at fair value as required by relevant IFRS: a. Derivative financial instruments; b. Share-based payment transactions; c. Marketable securities and investments in mutual funds; d. Investments in FMPs; and e. Contingent consideration. c. Use of estimates and judgments The preparation of financial statements in conformity with IFRS requires management to make judgments, estimates and assumptions that affect the application of accounting policies and the reported amount of assets, liabilities, income and expenses. Actual results may differ from those estimates. Estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognized in the period in which the estimates are revised and in any future period affected. In particular, information about significant areas of estimation, uncertainty and critical judgments in applying accounting policies that have the most significant effect on the amount recognized in the consolidated financial statements is included in the following notes: i. Revenue recognition The Company’s determination of whether BPM services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The Company provides automobile claims handling services, wherein the Company enters into contracts with its clients to process all their claims over the contract period and the fees are determined either on a per claim basis or as a fixed payment for the contract period. Where the contracts are on a per claim basis, the Company invoices the client at the inception of the claim process. The Company estimates the processing period for the claims and recognizes revenue over the estimated processing period. This processing period generally ranges between one to two months. The processing time may be greater for new clients and the estimated service period is adjusted accordingly. The processing period is estimated based on historical experience and other relevant factors, if any. ii. Current income taxes The major tax jurisdictions for the Company are India, the Philippines, South Africa, UK, and US, though the Company also files tax returns in other foreign jurisdictions. Significant judgments are involved in determining the provision for income taxes including judgment on whether tax positions are probable of being sustained in tax assessments. A tax assessment can involve complex issues, which can only be resolved over extended time periods. The recognition of taxes that are subject to certain legal or economic limits or uncertainties is assessed individually by management based on the specific facts and circumstances. iii. Deferred income taxes The assessment of the probability of future taxable profit in which deferred tax assets can be utilized is based on the Company’s latest approved budget forecast, which is adjusted for significant non-taxable iv. Impairment An impairment loss is recognized for the amount by which an asset’s or cash-generating unit’s carrying amount exceeds its recoverable amount. To determine the recoverable amount, management estimates expected future cash flows from each asset or cash-generating unit and determines a suitable interest rate in order to calculate the present value of those cash flows. In the process of measuring expected future cash flows management makes assumptions about future operating results. These assumptions relate to future events and circumstances. The actual results may vary, and may cause significant adjustments to the Company’s assets within the next financial year. The calculation of impairment loss involves significant estimates and assumptions which include revenue and earnings multiples, growth rates and net margins used to calculate projected future cash flows, risk-adjusted discount rate and future economic and market conditions. In most cases, determining the applicable discount rate involves estimating the appropriate adjustment to market risk and the appropriate adjustment to asset-specific risk factors. Estimation uncertainty relating to COVID-19 In evaluating the recoverability of trade receivables including unbilled revenue, contract assets, goodwill, long lived assets and investments, the Company has considered all internal and external information in the preparation of the consolidated financial statements including credit reports and economic outlook. The Company has performed sensitivity analysis on the assumptions used and based on current indicators of future economic conditions, the Company expects to recover the carrying amount of these assets. The impact of COVID-19 v. Valuation of derivative financial instruments Management uses valuation techniques in measuring the fair value of derivative financial instruments, where active market quotes are not available. In applying the valuation techniques, management makes maximum use of market inputs, and uses estimates and assumptions that are, as far as possible, consistent with observable data that market participants would use in pricing the instrument. Where applicable data is not observable, management uses its best estimate about the assumptions that market participants would make. These estimates may vary from the actual prices that would be achieved in an arm’s length transaction at the reporting date. vi. Accounting for defined benefit plans In accounting for pension and post-retirement benefits, several statistical and other factors that attempt to anticipate future events are used to calculate plan expenses and liabilities. These factors include expected return on plan assets, discount rate assumptions and rate of future compensation increases. To estimate these factors, actuarial consultants also use estimates such as withdrawal, turnover, and mortality rates which require significant judgment. The actuarial assumptions used by the Company may differ materially from actual results in future periods due to changing market and economic conditions, regulatory events, judicial rulings, higher or lower withdrawal rates, or longer or shorter participant life spans. vii. Share-based compensation expense The share-based compensation expense is determined based on the Company’s estimate of equity instruments that will eventually vest and valuation using the Monte-Carlo simulation and the binomial lattice model. viii. Business combinations Business combinations are accounted for using the acquisition method under the provisions of IFRS 3 (Revised) , “Business Combinations.” The cost of an acquisition is measured at the fair value of the assets transferred, equity instruments issued, and liabilities incurred at the date of acquisition. The cost of the acquisition also includes the fair value of any contingent consideration. Identifiable tangible and intangible assets acquired, and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair value on the date of acquisition. Significant estimates are required to be made in determining the value of contingent consideration and intangible assets. xi. Impairment of non-derivative The Company applies the forward-looking expected credit loss (“ECL”) model for recognizing impairment loss on financial assets that are measured at amortized cost or at fair value through other comprehensive income (“FVOCI”). The Company applies the simplified approach for determining the lifetime ECL allowance using the Company’s historical credit loss experience adjusted for factors that are specific to the debtor. For all other financial assets, the Company recognizes lifetime ECL when there has been a significant increase in credit risk since initial recognition. xii. Leases The Company determines the lease term as the non-cancellable lease-by-lease The Company has applied an incremental borrowing rate for the purpose of computing lease liabilities based on the rate prevailing in respective geographies. (Amounts in thousands, except share and per share data) d. Basis of consolidation The Company consolidates entities over which it has control. Control exists when the Company has existing rights that give the Company the current ability to direct the activities which affect the entity’s returns; the Company is exposed to or has rights to returns which may vary depending on the entity’s performance; and the Company has the ability to use its power to affect its own returns from its involvement with the entity. Subsidiaries are consolidated from the date control commences until the date control ceases. i. Business combinations Business combinations are accounted for using the acquisition method under the provisions of IFRS 3 (Revised) , “Business Combinations.” The cost of an acquisition is measured at the fair value of the assets transferred, equity instruments issued and liabilities incurred at the date of acquisition. The consideration of the acquisition also includes the fair value of any contingent consideration. Identifiable tangible and intangible assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair value on the date of acquisition. Significant estimates are required to be made in determining the value of contingent consideration and intangible assets. Transaction costs that the Company incurs in connection with a business combination such as finders’ fees, legal fees, due diligence fees, and other professional and consulting fees are expensed as incurred. ii. Transactions eliminated on consolidation All inter-company and intra-company balances, transactions, income and expenses including unrealized income or expenses are eliminated on consolidation. e. Functional and presentation currency The financial statements of each of the Company’s subsidiaries are presented using the currency of the primary economic environment in which these entities operate (i.e. the functional currency). The consolidated financial statements are presented in US dollars (“USD”) which is the presentation currency of the Company and has been rounded off to the nearest thousands. f. Foreign currency transactions and translation i. Transactions in foreign currency Transactions in foreign currency are translated into the functional currency using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation at the exchange rates prevailing at the reporting date of monetary assets and liabilities denominated in foreign currencies are recognized in the consolidated statement of income. Gains/losses relating to translation or settlement of trading activities are disclosed under foreign exchange gains/losses and translation or settlements of financing activities are disclosed under finance expenses. In the case of foreign exchange gains/losses on borrowings that are considered as a natural economic hedge for the foreign currency monetary assets, such foreign exchange gains/losses, net are presented within results from operating activities. ii. Foreign operations For the purpose of presenting consolidated financial statements, the assets and liabilities of the Company’s foreign operations that have local functional currency are translated into US dollars using exchange rates prevailing at the reporting date. Income and expense are translated at the monthly average exchange rate for the respective period. Exchange differences arising, if any, are recorded in equity as part of the Company’s other comprehensive income. Such exchange differences are recognized in the consolidated statement of income in the period in which such foreign operations are disposed. Goodwill and fair value adjustments arising on the acquisition of foreign operation are treated as assets and liabilities of the foreign operation and translated at the exchange rate prevailing at the reporting date. Foreign currency exchange differences arising from intercompany receivables or payables relating to foreign operations, the settlement of which is neither planned nor likely to occur in the foreseeable future, are considered to form part of net investment in foreign operation and are recognized in foreign currency translation reserve. g. Financial instruments — initial recognition and subsequent measurement Financial instruments are classified in the following categories: • Non-derivative • Non-derivative • Derivative financial instruments under the category of financial assets or financial liabilities at FVTPL or at FVOCI. The classification of financial instruments depends on the purpose for which those were acquired. Management determines the classification of the Company’s financial instruments at initial recognition. Non-derivative Subsequent to initial recognition, non-derivative i. Non-derivative a) Financial assets at amortized cost Financial assets that meet the following criteria are measured at amortized cost (except for investments that are designated at FVTPL on initial recognition): i) the asset is held within a business model whose objective is to hold assets in order to collect contractual cash flows; and ii) the contractual terms of the instrument give rise on specified dates to cash flows that are solely payment of principal and interest on the principal amount outstanding. Financial assets at amortized cost are presented as current assets, except for those maturing later than 12 months after the balance sheet date which are presented as non-current b) Financial assets at FVTPL Financial assets that do not meet the amortized cost or FVOCI criteria are measured at FVTPL. Financial assets at FVTPL are measured at fair value at the end of each reporting period, with any gains or losses arising on re-measurement Interest income on financial assets at FVTPL is recognized in the consolidated statement of income. Dividend on financial assets at FVTPL is recognized when the Company’s right to receive the dividend is established. ii. Non-derivative All financial liabilities are recognized initially at fair value, except in the case of loans and borrowings which are recognized at fair value, net of directly attributable transaction costs. The Company’s financial liabilities include trade and other payables, bank overdrafts, contingent consideration and loans and borrowings. Trade and other payables maturing later than 12 months after the reporting date are presented as non-current After initial recognition, interest bearing loans and borrowings are subsequently measured at amortized cost using the effective interest rate method. Gains and losses are recognized in the consolidated statement of income when the liabilities are derecognized as well as through the effective interest rate method amortization process. After initial recognition, contingent consideration is subsequently measured at fair value and the changes to the fair value are recognized in the consolidated statement of income. iii. Derivative financial instruments and hedge accounting The Company is exposed to foreign currency fluctuations on foreign currency assets, liabilities, net investment in foreign operations and forecasted cash flows denominated in foreign currency. The Company limits the effect of foreign exchange rate fluctuation by following established risk management policies including the use of derivatives. The Company enters into derivative financial instruments where the counterparty is primarily a bank. The Company holds derivative financial instruments such as foreign exchange forward and option contracts and interest rate swaps to hedge certain foreign currency and interest rate exposures. Cash flow hedges The Company recognizes derivative instruments as either assets or liabilities in the statement of financial position at fair value. Derivative instruments qualify for hedge accounting when the instrument is designated as a hedge; the hedged item is specifically identifiable and exposes the Company to risk; and it is expected that a change in fair value of the derivative instrument and an opposite change in the fair value of the hedged item will have a high degree of correlation. For derivative instruments where hedge accounting is applied, the Company records the effective portion of derivative instruments that are designated as cash flow hedges in other comprehensive income/(loss) in the statement of comprehensive income, which is reclassified into earnings in the same period during which the hedged item affects earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item, if any (i.e., the ineffective portion) or hedge components excluded from the assessment of effectiveness, and changes in fair value of other derivative instruments not designated as qualifying hedges is recorded as gains/losses, net in the consolidated statement of income. If the hedging instrument expires or is sold, terminated or exercised, the cumulative gain or loss on the hedging instrument recognized in the cash flow hedging reserve (in other comprehensive income/(loss)) until the period the hedge was effective remains in the cash flow hedging reserve until the forecasted transaction occurs. Cash flow hedge on interest rate swaps are recorded under finance expense, net. Cash flows from the derivative instruments are classified within cash flows from operating activities in the statement of cash flows. When it is highly probable that a forecasted transaction will not occur, the Company discontinues the hedge accounting and recognizes immediately, in the consolidated statement of income, the gains and losses attributable to such derivative instrument that were accumulated in other comprehensive income/(loss). Gains/(losses) on cash flow hedges on forecasted revenue transactions are recorded in foreign exchange gains/(losses) forming part of revenue. Changes in fair value of foreign currency derivative instruments not designated as cash flow hedges are recognized in the consolidated statement of income and reported within foreign exchange gains, net within results from operating activities. iv. Offsetting of financial instruments Financial assets and financial liabilities are offset against each other and the net amount reported in the consolidated statement of financial position if, and only if, there is a currently enforceable legal right to offset the recognized amounts and there is an intention to settle on a net basis, or to realize the assets and settle the liabilities simultaneously. v. Fair value of financial instruments The fair value of financial instruments that are traded in active markets at each reporting date is determined by reference to quoted market prices or dealer price quotations, without any deduction for transaction costs. For financial instruments not traded in an active market, the fair value is determined using appropriate valuation models. Where applicable, these models project future cash flows and discount the future amounts to a present value using market-based observable inputs including interest rate curves, credit risk, foreign exchange rates, and forward and spot prices for currencies. vi. Impairment of non-derivative The Company applies the forward-looking ECL model for recognizing impairment loss on financial assets that are measured at amortized cost or at FVOCI. Loss allowance for trade receivables and unbilled revenue with no significant financing component are measured at an amount equal to lifetime ECL. The Company applies the simplified approach for determining the lifetime ECL allowance using the Company’s historical credit loss experience adjusted for factors that are specific to the debtor. For all other financial assets, the Company recognizes lifetime ECL when there has been a significant increase in credit risk since initial recognition. However, if the credit risk on the financial instruments has not increased significantly since the initial recognition, the Company measures the loss allowance for that financial instrument equal to 12-month h. Equity and share capital i. Share capital, share premium and treasury shares The Company has only one class of equity shares. Par value of the equity share is recorded as the share capital and the amount received in excess of par value is classified as share premium. The credit corresponding to the share-based compensation expense and excess tax benefit related to the exercise of share options and restricted share units is recorded in share premium. Treasury shares represent the consideration paid by the Company, including any directly attributable costs, to repurchase its own ordinary shares. Treasury shares are presented as a deduction from total equity. On cancellation of treasury shares, the amount paid is adjusted against share capital, to the extent of the par value of ordinary shares repurchased, and the balance is adjusted against share premium. ii. Retained earnings Retained earnings comprise the Company’s undistributed earnings after taxes. iii. Other components of equity Other components of equity consist of the following: Cash flow hedging reserve Changes in fair value of derivative hedging instruments designated and effective as a cash flow hedge are recognized net of taxes. Foreign currency translation reserve Foreign currency translation reserve consists of (i) the exchange difference arising from the translation of the financial statements of foreign subsidiaries and (ii) foreign currency differences arising from intercompany receivables or payables relating to foreign operations, the settlement of which is neither planned nor likely to occur in the foreseeable future, which are considered to form part of net investment in foreign operation. Other Reserves Other reserves include the Special Economic Zone Re-Investment Reserve created out of the profits of eligible Special Economic Zones (“SEZ”) units in terms of the provisions of the Indian Income-tax Act, 1961. Further, these provisions require the reserve to be utilized by the Company for acquiring new plant and machinery for the purpose of its business . Pension adjustments This reserve represents cumulative actuarial gain and losses recognized, net of taxes on defined benefits plans. i. Cash and cash equivalents The Company considers all highly liquid investments with an initial maturity of up to three months to be cash equivalents. Cash equivalents are readily convertible into known amounts of cash and subject to an insignificant risk of changes in value. j. Investments i. Marketable securities and mutual funds The Company’s marketable securities represent liquid investments and are acquired principally for the purpose of earning daily income. Investments in mutual funds represent investments in mutual fund schemes wherein the mutual fund issuer has invested these funds in enterprise development funds. Investments which are expected to be redeemed after 12 months from the reporting date are classified as non-current These investments are designated at fair value through profit or loss and changes in fair value recognized in the consolidated statement of income. The fair value represents the original cost of the investment and the investment’s fair value at each reporting period. ii. Investments in fixed maturity plans The Company’s investments in FMPs represent investments in mutual fund schemes wherein the mutual fund issuer has invested these funds in certificates of deposits with banks in India. The investments in FMPs are designated as fair value through profit or loss and change in fair value is recognized in the consolidated statement of income. The fair value represents original cost of an investment and the investment’s fair value at each reporting period or net asset value as quoted. The Company manages FMPs on a fair value basis in accordance with the entity’s documented risk management, investment strategy and information provided to the key managerial personnel. The returns on the investment are measured based on the fair value movement rather than looking at the overall returns on the maturity. The Company’s investment purchase and sale decisions are also based on the fair value fluctuations rather than a predetermined policy to hold the investment until maturity. Key management personnel believe that recording these investments through the consolidated statement of income would provide more relevant information to measure the performance of the investment. iii. Investments in fixed deposits Investments in fixed deposits consist of term deposits with original maturities of more than three months with banks. These are designated as financial assets at amortized cost. k. Funds held for clients Some of the Company’s agreements in the auto claims handling services allow the Company to temporarily hold funds on behalf of the client. The funds are segregated from the Company’s funds and there is usually a short period of time between when the Company receives these funds from the client and when the payments are made on their behalf. l. Property and equipment Property and equipment are stated at historical cost. Cost includes expenditures directly attributable to the acquisition of the asset. Depreciation and amortization is computed using the straight-line method over the estimated useful lives of the assets, which are as follows: Asset description Asset life (in years) Buildings 20 Computers and software 3-4 Furniture, fixtures and office equipment 2-5 Vehicles 3 Leasehold improvements Lesser of estimated useful life or lease term Assets acquired under finance leases are capitalized as assets by the Company at an amount equal to the fair value of the leased asset or, if lower, the present value of the minimum lease payments, each determined at the inception of the lease. Assets under finance leases and leasehold improvements are depreciated over the shorter of the lease term or the estimated useful life of the assets. Advances paid towards the acquisition of property and equipment and the cost of property and equipment not ready for use before the reporting date are disclosed as capital work-in-progress The Company assesses property and equipment for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or group of assets may not be recoverable. If any such indication exists, the Company estimates the recoverable amount of the asset. The recoverable amount of an asset or cash generating unit is the higher of its fair value less cost of disposal (“FVLCOD”) and its value-in-use m. Goodwill Goodwill represents the excess of the cost of an acquisition over the fair value of the Company’s share of the net identifiable assets of the acquired subsidiary at the date of acquisition. Goodwill is allocated to the cash-generating units expected to benefit from the synergies of the combination for the purpose of impairment testing. Goodwill is tested, at the cash-generating unit (or group of cash generating units) level, for impairment annually or if events or changes in circumstances indicate that the carrying amount may not be recoverable. Goodwill is carried at cost less accumulated impairment losses. Impairment loss on goodwill is not reversed. See further discussion on impairment testing under “Impairment of intangible assets and goodwill” below. n. Intangible assets Intangible assets are recognized only when it is probable that the expected future economic benefits attributable to the assets will accrue to the Company and the cost can be reliably measured. Intangible assets acquired in a business combination are recorded at fair value using generally accepted valuation methods appropriate for the type of intangible asset. Intangible assets with definite lives are amortized over the estimated useful lives and are reviewed for impairment, if indicators of impairment arise. Intangible assets with indefinite lives are not amortized but instead are tested for impairment at least annually and written down to the fair value. See further discussion on impairment testing under “Impairment of intangible assets and goodwill” below. Software development costs Costs incurred for developing software or enhancements to the existing software products to be sold and/or used for internal use are capitalized once the research phase is complete, technological feasibility and commercial feasibility has been established, future economic benefits are probable, the Company has an intention and ability to complete and use or sell the software and the costs can be measured reliably. Technological feasibility is established upon completion of a detailed design program or, in its absence, completion of a working model. Significant management judgments and estimates are required in the assessment of when technological feasibility is established, as well as in the ongoing assessment of the recoverability of capitalized costs. Costs that qualify as software development costs include external direct costs of materials and services utilized in developing or obtaining software and compensation and related benefits for employees who are directly associated with the software project. The capitalized costs are amortized on a straight-line basis over the estimated useful life. Costs associated with research phase activities, training, maintenance and all post-implementation stage activities are expensed as incurred. The Company’s definite lived intangible assets are amortized over the estimated useful life of the assets on a straight-line basis, as given below. Asset description Weighted average Customer contracts 46 Customer relationships 218 Covenant not-to-compete 48 Trade names 34 Technology 94 Intellectual Property and other rights 24 Software 50 Service mark Indefinite useful life o. Impairment of intangible assets and goodwill Goodwill is not subject to amortization and tested at least annually for impairment or whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Intangible assets that are subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment loss is recognized for the amount by which the asset’s carrying amount exceeds its recoverable amount. The recoverable amount is the higher of an asset’s FVLCOD and VIU. For the purposes of assessing impairment, assets are grouped at the cash generating unit level which is the lowest level for which there are separately identifiable cash flows. Impairment losses recognized in respect of cash generating units are allocated first to reduce the carrying amount of any goodwill allocated to the cash generating units (or group of cash generating units) and then, to reduce the carrying amount of the other assets in the cash generating unit (or group of cash generating units) on a pro rata basis based on the carrying amount of each asset in the cash generating unit. Intangible assets except goodwill that suffered impairment are reviewed for possible reversal of the impairment at each reporting date. p. Employee benefits i. Defined contribution plans US savings plan Eligible employees of the Company in the US participate in a savings plan (“the Plan”) under Section 401(k) of the United States Internal Revenue Code (“the Code”). The Plan allows for employees to defer a portion of their annual earnings on a pre-tax UK pension scheme Eligible employees in the UK contribute to a defined contribution pension scheme operated in the UK. The assets of the scheme are held separately in an independently administered fund. The pension expense represents contributions payable to the fund maintained by the Company. Provident fund Eligible employees of the Company in India, the Philippines

New accounting pronouncements n

New accounting pronouncements not yet adopted by the Company	12 Months Ended
	Mar. 31, 2022
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New accounting pronouncements not yet adopted by the Company	3. New accounting pronouncements not yet adopted by the Company Certain new standards, interpretations and amendments to existing standards have been published that are mandatory for the Company’s accounting periods beginning on or after April 1, 2022 or later periods. Those which are considered to be relevant to the Company’s operations are set out below. i. In January 2020, the IASB issued amendments to IAS 1 “ Presentation of Financial Statements Non-current’. Non-current • clarify that the classification of liabilities as current or non-current • clarify that classification is unaffected by expectations about whether an entity will exercise its right to defer settlement of a liability; and • make clear that settlement refers to the transfer to the counterparty of cash, equity instruments, other assets or services. The above amendments are effective for annual reporting periods beginning on or after January 1, 2023 and are to be applied retrospectively. Early application is permitted. The Company is currently evaluating the impact of these amendments on its consolidated financial statements. ii. In January 2020, the IASB issued amendments to IAS 16 “ Property, Plant and Equipment • prohibit deducting from the cost of an item of property, plant and equipment any proceeds from selling items produced while bringing that asset to the location and condition necessary for it to be capable of operating in the manner intended by management; and • require an entity to recognize the proceeds from selling such items, and the cost of producing those items, in profit or loss. An entity is required to apply the amendments retrospectively only to items of property, plant and equipment that are brought to the location and condition necessary for them to be capable of operating in the manner intended by management on or after the beginning of the earliest period presented in the financial statements in which the entity first applies the amendments. The amendments are effective for annual periods beginning on or after January 1, 2022. Early application is permitted. The Company is currently evaluating the impact of these amendments on its consolidated financial statements. iii. In May 2020, the IASB issued amendments to IAS 37 “ Provisions, Contingent Liabilities and Contingent Assets • specify that the ‘cost of fulfilling’ a contract comprises the ‘costs that relate directly to the contract’; and • state that costs that relate directly to a contract can either be incremental costs of fulfilling that contract (examples would be direct labour or materials) or an allocation of other costs that relate directly to fulfilling contracts (an example would be the allocation of the depreciation charge for an item of property, plant and equipment used in fulfilling the contract). An entity is required to apply the amendments to contracts for which the entity has not yet fulfilled all its obligations at the beginning of the annual reporting period in which the entity first applies the amendments. Comparatives are not required to be restated. The amendments are effective for annual periods beginning on or after January 1, 2022. Early application is permitted. The Company is currently evaluating the impact of these amendments on its consolidated financial statements.

Business Combinations

Business Combinations	12 Months Ended
	Mar. 31, 2022
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Business Combinations	4. Business Combinations a) Payment for business transfer (‘CEPROCS’) On December 31, 2021, the Company entered into an agreement with CEPROCS S.R.L. (“CEPROCS”), a provider of global sourcing and procurement services across multiple industries, including automotive, manufacturing, and retail/consumer packaged goods (“CPG”), pursuant to which the Company agreed to acquire its customer contract, skilled workforce and related assets, effective December 31, 2021 (“Acquisition Date”). The purchase price of the transaction, which was paid in cash, was $566. The excess of purchase price over the assets acquired amounted to $14, which has been recognized as goodwill. The Company incurred acquisition related costs of $78, which have been included in “General and administrative expenses” in the consolidated statement of income for the year ended March 31, 2022. Goodwill is attributable mainly to the benefits expected from the acquired assembled workforce and is not expected to be deductible for tax purposes. b) MOL Information Processing Services (I) Private Limited (“MOL IPS”) On August 1, 2021, the Company acquired all outstanding equity shares of MOL IPS from the shareholder of MOL IPS, MOL Hong Kong Limited (“the seller”), for a total purchase consideration of The Company paid $2,310 to the seller (net of cash) as part of purchase consideration for the year ended March 31, 2022. The Company has recognized an amount of $1,298 as goodwill in the books as a result of this acquisition. The Company incurred acquisition related costs of $62, which have been included in “General and administrative expenses” in the consolidated statement of income for the year ended March 31, 2022. The purchase price has been allocated on a provisional basis, as set out below, to the assets acquired and liabilities assumed in the business combination. Amount Total assets $ 3,981 Less: Total liabilities (2,321 ) Net assets acquired 1,660 Less: Purchase consideration (2,958 ) Goodwill on acquisition $ 1,298 Goodwill is attributable mainly to assembled workforce arising from the acquisition. Goodwill arising on acquisition is not expected to be tax deductible. c) Denali On January 20, 2017 (“Acquisition Date”), the Company acquired all outstanding shares of Denali, a provider of strategic procurement BPM solutions for a purchase consideration of $38,668 (including the contingent consideration of $6,277, dependent on the achievement of revenue targets over a period of three years and deferred consideration of $522 payable in the first quart e The Company made payment of $522 towards deferred consideration and reduced the purchase consideration by $968 towards working capital adjustments during the year ended March 31, 2018. During the year ended March 31, 2020, 2019 and 2018, contingent consideration of $1,745, $2,484 and $2,351, respectively, was paid by the Company to the sellers on achievement of the revenue target related to the respective measurement period. d) Value Edge On June 14, 2016 (“Acquisition Date”), the Company acquired all outstanding equity shares of Value Edge which provides business research and analytics reports and databases across the domains of pharmaceutical, biotech and medical devices, for a total consideration of $18,265 including working capital adjustments of $765 and contingent consideration of $5,112 (held in escrow), subject to compliance with certain conditions, payable over a period of three years. The acquisition is expected to deepen the Company’s domain and specialized analytical capabilities in the growing pharma market, and provide the Company with a technology asset, which is leverageable across clients and industries. During the year ended March 31, 2020, 2019 and 2018, the Company released from escrow an amount of $1,535 each towards contingent consideration payable to the sellers.

Cash and cash equivalents

Cash and cash equivalents	12 Months Ended
	Mar. 31, 2022
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Cash and cash equivalents	5. Cash and cash equivalents The Company considers all highly liquid investments with an initial maturity of up to three months to be cash equivalents. Cash and cash equivalents consist of the following: As at March 31, March 31, 2022 2021 Cash and bank balances $ 78,578 $ 73,398 Short-term deposits with banks* 29,575 32,235 Total $ 108,153 $ 105,633 * Short-term deposits can be withdrawn by the Company at any time without prior notice and are readily convertible into known amounts of cash with an insignificant risk of changes in value.

Investments

Investments	12 Months Ended
	Mar. 31, 2021
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Investments	6. Investments Investments consist of the following: As at March 31, March 31, 2022 2021 Investments in marketable securities and mutual funds $ 263,013 $ 250,852 Investment in fixed deposits 41,827 38,699 Total $ 304,840 $ 289,551 As at March 31, 2022 March 31, 2021 Current investments $ 211,398 $ 203,676 Non-current 93,442 85,875 Total $ 304,840 $ 289,551

Trade receivables and unbilled

Trade receivables and unbilled revenue, net	12 Months Ended
	Mar. 31, 2022
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Trade receivables and unbilled revenue, net	7. Trade receivables and unbilled revenue, net Trade receivables and unbilled revenue consist of the following: As at March 31, March 31, 2022 2021 Trade receivables and unbilled revenue* $ 189,952 $ 152,414 Less: Allowances for ECL (2,398 ) (2,624 ) Total $ 187,554 $ 149,790 Non-current $ — $ 269 Current trade receivables and unbilled revenue* $ 187,554 $ 149,521 * As at March 31, 2022 and March 31, 2021 unbilled revenue includes contract assets amounting to $246 and $191, respectively. The movement in the ECL is as follows: Year ended March 31, 2022 2021 2020 Balance at the beginning of the year $ 2,624 $ 1,590 $ 1,182 Charged to consolidated statement of income 1,504 1,971 1,316 Write-offs, net of collections (1,308 ) (589 ) (299 ) Reversals (397 ) (637 ) (533 ) Translation adjustment (25 ) 289 (76 ) Balance at the end of the year $ 2,398 $ 2,624 $ 1,590

Prepayments and other assets

Prepayments and other assets	12 Months Ended
	Mar. 31, 2022
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Prepayments and other assets	8. Prepayments and other assets Prepayment and other assets consist of the following: As at March 31, 2022 March 31, 2021 Current: Service tax and other tax receivables $ 8,833 $ 5,997 Employee receivables 1,045 1,044 Advances to suppliers 2,987 2,667 Prepaid expenses 10,169 9,261 Other assets 5,788 4,242 Total $ 28,822 $ 23,211 Non-current: Deposits $ 11,263 $ 10,508 Income tax assets 15,068 12,151 Service tax and other tax receivables 13,079 12,786 Other assets 4,865 4,587 Total $ 44,275 $ 40,032

Goodwill

Goodwill	12 Months Ended
	Mar. 31, 2022
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Goodwill	9. Goodwill A summary of the carrying value of goodwill is as follows: As at March 31, March 31, Gross carrying amount $ 150,684 $ 152,459 Accumulated impairment of goodwill (27,147 ) (28,480 ) Total $ 123,537 $ 123,979 The movement in goodwill balance by reportable segment as at March 31, 2022 and 2021 is as follows: Gross carrying amount WNS WNS Auto Global BPM Claims BPM Total Balance as at April 1, 2020 $ 121,304 $ 25,520 $ 146,824 Translation adjustment 2,675 2,960 5,635 Balance as at March 31, 2021 $ 123,979 $ 28,480 $ 152,459 Goodwill arising on acquisitions (Refer Note 4(a),4(b)) 1,312 — 1,312 Translation adjustment (1,754 ) (1,333 ) (3,087 ) Balance as at March 31, 2022 $ 123,537 $ 27,147 $ 150,684 Key assumptions on which the Company has based its determination of VIUs include: a) Estimated cash flows for five years based on management approved internal budgets with extrapolation for the remaining period, wherever such budgets were shorter than five years period. b) Terminal value arrived by extrapolating last forecasted year cash flows to perpetuity using long-term growth rates. These long-term growth rates take into consideration external macro-economic sources of data. Such long-term growth rate considered does not exceed that of the relevant business and industry sector. c) The discount rates used are based on weighted average cost of capital of a comparable market participant, which are adjusted for specific country risks. The key assumptions used in performing the impairment test, by each CGU, were as follows: CGU’s – As at March 31, 2022 WNS Global BPM* South Africa Denali Research and HealthHelp Technology services Discount rate 14.9 % 15.5 % 11.7 % 14.9 % 11.7 % 13.0 % Perpetual growth rate 3.0 % 3.0 % 2.5 % 3.0 % 2.5 % 2.0 % CGU’s – As at March 31, 2021 WNS Global BPM* South Africa Denali Research and HealthHelp Technology services Discount rate 15.3 % 16.2 % 12.0 % 15.3 % 12.0 % 14.0 % Perpetual growth rate 3.0 % 3.0 % 2.5 % 3.0 % 2.5 % 2.0 % * Excludes South Africa, Research and Analytics, Technology services, HealthHelp and Denali CGUs. The assumptions used were based on the Company’s management approved internal budgets. The Company projected revenue, operating margins and cash flows for a period of five years and applied a perpetual long-term growth rate thereafter. In arriving at its forecasts, the Company considered past experience, economic trends and inflation as well as industry and market trends including the impact of COVID-19. Based on the above, no impairment was identified as at March 31, 2022, as the recoverable amount of the CGUs exceeded the carrying value. An analysis of the calculation’s sensitivity to a change in the key parameters (revenue growth, operating margin, discount rate and long-term growth rate) did not identify any probable scenarios where the other CGU’s recoverable amount would fall below its carrying amount. Impairment charge recognized in the year March 31, 2020 During the fourth quarter of the year ended March 31, 2020, the withdrawal of the UK from the EU, commonly referred to as “Brexit”, affecting insurance industry and downward revision in the expectation for future performance within WNS Auto Claims reportable segment due to contract renegotiations and loss of certain clients caused the financial projections and estimates of WNS Auto Claims BPM reportable segment to significantly decrease from the previous estimates. These factors arising in the fourth quarter of the year ended March 31, 2020 and with the operating environment in UK currently being highly uncertain had a significant and negative impact on the VIU of the WNS Auto Claims BPM reportable segment, and the Company determined that the carrying value of the reportable segment for WNS Auto Claims BPM exceeded the VIU as at the date of its annual impairment review. The Company further performed the valuation of FVLCOD of the impairment test. The Company determined the FVLCOD of reportable segment using the “Income Approach — Discounted Cash Flow Analysis” method. Under the “Income Approach — Discounted Cash Flow Analysis” method the key assumptions consider projected sales, cost of sales, and operating expenses for five years. These assumptions were determined by management utilizing our internal operating plan, growth rates for revenues and operating expenses, and margin assumptions using market participant perspective. An additional key assumption under this approach is the discount rate, which represents the expected return on capital and is based on the estimated weighted average cost of capital for a market participant. If our assumptions relative to growth rates were to change, our fair value calculation may change, which could impact the results. The fair value of the WNS Auto Claims BPM reportable segment was determined using level 3 inputs through an income approach which includes assumptions for discount rate of 14.5% with annual and perpetual growth rate of 0.6% to 5.1% and 2.0% respectively. The Company used the “Market Approach-Guideline Public Company Method” to corroborate the results of the income approach. The FVLCOD was higher than the VIU, which is considered as the recoverable amount of the CGU amounting to $33,592. The next step of the goodwill impairment test resulted in an impairment charge of $4,085 for goodwill related to the WNS Auto Claims BPM reportable segment during the year ended March 31, 2020. This impairment charge of $4,085 was recorded in operating expenses in the consolidated statement of income, which reduced the goodwill in WNS Auto Claims BPM to Nil as at March 31, 2020. Accumulated impairment losses WNS WNS Auto Global BPM Claims BPM Total Balance as at April 1, 2020 $ — $ 25,520 $ 25,520 Impairment of goodwill recognized during the year — — — Translation adjustment — 2,960 2,960 Balance as at March 31, 2021 $ — $ 28,480 $ 28,480 Impairment of goodwill recognized during the year — — — Translation adjustment — (1,333 ) (1,333 ) Balance as at March 31, 2022 $ — $ 27,147 $ 27,147 The carrying value of goodwill allocated to the cash generating units (“CGU”) is as follows: As at March 31, March 31, 2022 2021 Research and Analytics $ 42,051 $ 43,594 HealthHelp 39,082 39,082 Denali 29,542 29,542 WNS Global BPM* 4,934 3,717 South Africa 4,522 4,471 Technology services 3,406 3,573 $ 123,537 $ 123,979 * Excludes South Africa, Research and Analytics, Technology services, Denali and HealthHelp goodwill.

Intangible assets

Intangible assets	12 Months Ended
	Mar. 31, 2022
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Intangible assets	10. Intangible assets The changes in the carrying value of intangible assets for the year ended March 31, 2022 are as follows: Gross carrying value Customer Contracts Customer Relationships Intellectual Property and Other rights Trade names Technology Leasehold Benefits Covenant not-to- compete Service mark Software Total Balance as at April 1, 2021 $ 158,014 $ 121,622 $ 4,511 $ 641 $ 5,987 $ 1,835 $ 9,161 $ 400 $ 53,152 $ 355,323 Additions — — — — — — — — 12,246 12,246 On acquisitions (Refer Note 4(a), 4(b)) 536 — — — — — — — 146 682 Translation adjustments (2,387 ) (570 ) (199 ) (3 ) (40 ) — (96 ) — (2,325 ) (5,620 ) Balance as at March 31, 2022 $ 156,163 $ 121,052 $ 4,312 $ 638 $ 5,947 $ 1,835 $ 9,065 $ 400 $ 63,219 $ 362,631 Accumulated amortization Balance as at April 1, 2021 $ 158,014 $ 76,739 $ 4,511 $ 641 $ 3,230 $ 1,835 $ 9,161 $ — $ 36,051 $ 290,182 Amortization 133 3,645 — — 766 — — — 7,006 11,550 Translation adjustments (2,377 ) (554 ) (199 ) (3 ) (31 ) — (96 ) — (1,262 ) (4,522 ) Balance as at March 31, 2022 $ 155,770 $ 79,830 $ 4,312 $ 638 $ 3,965 $ 1,835 $ 9,065 $ — $ 41,795 $ 297,210 Net carrying value as at March 31, 2022 $ 393 $ 41,222 $ — $ — $ 1,982 $ — $ — $ 400 $ 21,424 $ 65,421 The changes in the carrying value of intangible assets for the year ended March 31, 2021 are as follows: Gross carrying value Customer Contracts Customer Relationships Intellectual Property and Other rights Trade names Technology Leasehold Benefits Covenant not-to- compete Service mark Software Total Balance as at April 1, 2020 $ 155,214 $ 120,427 $ 4,068 $ 638 $ 5,950 $ 1,835 $ 9,060 $ 400 $ 43,615 $ 341,207 Additions — — — — — — — — 7,544 7,544 Translation adjustments 2,800 1,195 443 3 37 — 101 — 1,993 6,572 Balance as at March 31, 2021 $ 158,014 $ 121,622 $ 4,511 $ 641 $ 5,987 $ 1,835 $ 9,161 $ 400 $ 53,152 $ 355,323 Accumulated amortization Balance as at April 1, 2020 $ 154,093 $ 71,965 $ 4,068 $ 638 $ 2,440 $ 1,835 $ 7,474 $ — $ 28,594 $ 271,107 Amortization 1,123 3,631 — — 765 — 1,587 — 6,616 13,722 Translation adjustments 2,798 1,143 443 3 25 — 100 — 841 5,353 Balance as at March 31, 2021 $ 158,014 $ 76,739 $ 4,511 $ 641 $ 3,230 $ 1,835 $ 9,161 $ — $ 36,051 $ 290,182 Net carrying value as at March 31, 2021 $ — $ 44,883 $ — $ — $ 2,757 $ — $ — $ 400 $ 17,101 $ 65,141 As at March 31, 2022, the estimated remaining weighted average amortization periods for definite lived intangible assets are as follows: Balance life (in months) Customer relationships 167 Customer contracts 9 Technology 34 Software 16 The estimated annual amortization expense based on remaining weighted average amortization periods for intangible assets and exchange rates, each as at March 31, 2022 are as follows: Amount 2023 $ 13,207 2024 11,319 2025 8,102 2026 4,431 2027 3,272 Thereafter 24,690 $ 65,021 * * Excludes service mark, as it has an indefinite useful life.

Property and equipment

Property and equipment	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Property and equipment	11. Property and equipment The changes in the carrying value of property and equipment for the year ended March 31, 2022 are as follows: Gross carrying value Building Computers and software Furniture, Vehicles Leasehold improvements Total Balance as at April 1, 2021 $ 9,733 $ 78,850 $ 84,335 $ 876 $ 76,043 $ 249,837 Additions — 13,966 2,449 — 2,348 18,763 On acquisitions (Refer Note 4(a), 4(b)) — 217 102 10 116 445 Disposals/retirements — (1,901 ) (1,016 ) (74 ) (2,765 ) (5,756 ) Translation adjustments (142 ) (3,558 ) (3,228 ) (28 ) (3,038 ) (9,994 ) Balance as at March 31, 2022 $ 9,591 $ 87,574 $ 82,642 $ 784 $ 72,704 $ 253,295 Accumulated depreciation Balance as at April 1, 2021 $ 5,945 $ 65,421 $ 68,141 $ 737 $ 58,568 $ 198,812 Depreciation 483 8,771 6,412 120 6,004 21,790 Disposals/retirements — (1,864 ) (988 ) (70 ) (2,727 ) (5,649 ) Translation adjustments (90 ) (2,754 ) (2,599 ) (23 ) (2,376 ) (7,842 ) Balance as at March 31, 2022 $ 6,338 $ 69,574 $ 70,966 $ 764 $ 59,469 $ 207,111 Capital work-in-progress 3,073 Net carrying value as at March 31, 2022 $ 49,257 The changes in the carrying value of property and equipment for the year ended March 31, 2021 are as follows: Gross carrying value Building Computers and software Furniture, Vehicles Leasehold improvements Total Balance as at April 1, 2020 $ 9,602 $ 74,388 $ 78,403 $ 838 $ 70,928 $ 234,159 Additions — 9,618 4,096 — 2,591 16,305 Disposals/retirements — (9,044 ) (1,988 ) — (1,293 ) (12,325 ) Translation adjustments 131 3,888 3,824 38 3,817 11,698 Balance as at March 31, 2021 $ 9,733 $ 78,850 $ 84,335 $ 876 $ 76,043 $ 249,837 Accumulated depreciation Balance as at April 1, 2020 $ 5,385 $ 63,896 $ 60,044 $ 514 $ 50,287 $ 180,126 Depreciation 484 7,203 6,995 193 6,605 21,480 Disposals/retirements — (9,003 ) (1,855 ) — (1,038 ) (11,896 ) Translation adjustments 76 3,325 2,957 30 2,714 9,102 Balance as at March 31, 2021 $ 5,945 $ 65,421 $ 68,141 $ 737 $ 58,568 $ 198,812 Capital work-in-progress 1,247 Net carrying value as at March 31, 2021 $ 52,272

Leases

Leases	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Leases	12. Leases The changes in the carrying value of ROU assets for the year ended March 31, 2022 are as follows: Gross carrying value Premises Computers Equipment Motor Total Balance as at April 1, 2021 $ 219,078 $ 39 $ 25 $ 639 $ 219,781 Additions 5,620 — — 216 5,836 On acquisition (Refer Note 4(b)) 1,528 — — — 1,528 Terminations/modifications 3,174 — — — 3,174 Translation adjustments (9,215 ) 1 (1 ) (42 ) (9,257 ) Balance as at March 31, 2022 $ 220,185 $ 40 $ 24 $ 813 $ 221,062 Accumulated depreciation Balance as at April 1, 2021 $ 52,497 $ 35 $ 17 $ 466 $ 53,015 Depreciation 28,100 4 3 106 28,213 Terminations/modifications (47 ) — — — (47 ) Translation adjustments (2,716 ) 1 (1 ) (26 ) (2,742 ) Balance as at March 31, 2022 $ 77,834 $ 40 $ 19 $ 546 $ 78,439 Net carrying value as at March 31, 2022 $ 142,351 $ — $ 5 $ 267 $ 142,623 The changes in the carrying value of ROU assets for the year ended March 31, 2021 are as follows: Gross carrying value Premises Computers Equipment Motor Total Balance as at April 1, 2020 $ 183,839 $ 34 $ 32 $ 515 $ 184,420 Additions 26,336 — — 118 26,454 Terminations/modifications (985 ) — (8 ) (22 ) (1,015 ) Translation adjustments 9,888 5 1 28 9,922 Balance as at March 31, 2021 $ 219,078 $ 39 $ 25 $ 639 $ 219,781 Accumulated depreciation Balance as at April 1, 2020 $ 25,015 $ 16 $ 12 $ 279 $ 25,322 Depreciation 27,236 16 10 181 27,443 Terminations/modifications (1,503 ) — (5 ) (9 ) (1,517 ) Translation adjustments 1,749 3 — 15 1,767 Balance as at March 31, 2021 $ 52,497 $ 35 $ 17 $ 466 $ 53,015 Net carrying value as at March 31, 2021 $ 166,581 $ 4 $ 8 $ 173 $ 166,766 The movement in lease liabilities for the year ended March 31, 2022 and 2021 is as follows: Lease liabilities March 31, March 31, Opening balance $ 191,907 $ 178,892 Cash outflows Principal payment of lease liabilities (26,235 ) (23,073 ) Interest payment on lease liabilities (12,826 ) (13,442 ) Non-cash On acquisition (Refer Note 4(b)) 1,521 — Additions 5,403 25,506 Terminations/modifications 2,282 1,313 Interest accrued 12,657 13,689 Rent concessions (21 ) (416 ) Translation adjustments (7,694 ) 9,438 Closing balance $ 166,994 $ 191,907 Rental expense charged for short-term leases was $1,125 and $857, rental expense charged for low value leases was $65 and $675 and variable lease payments was $1,599 and $1,730 for the year ended March 31, 2022 and March 31, 2021, respectively. The Company has applied practical expedient for rent concessions as a direct consequence of the COVID-19 The table below provides details regarding the contractual maturities of lease liabilities as at March 31, 2022, on an undiscounted basis: As at Tenure March 31, March 31, Less than 1 year $ 37,330 $ 39,591 1-3 67,177 73,833 3-5 49,449 63,462 More than 5 years 62,234 79,419 Total $ 216,190 $ 256,305 The total future cash outflows for leases that had not yet commenced were $82,013 and $Nil for the year ended March 31, 2022 and March 31, 2021, respectively.

Loans and borrowings

Loans and borrowings	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Loans and borrowings	13. Loans and borrowings Long-term debt The long-term loans and borrowings consist of th e following: Final As at Currency Interest rate March 31, 2022 March 31, 2021 US dollars 3M USD LIBOR+0.95 % 2022 — 16,800 Total — 16,800 Less: Debt issuance cost — (52 ) Total — 16,748 Current portion of long-term debt $ — $ 16,748 Long-term debt $ — $ — The Company has entered into a floating to fixed interest rate swap in relation to these debts. In March 2017, WNS (Mauritius) Limited obtained from HSBC Bank (Mauritius) Ltd. and Standard Chartered Bank, UK a five-year term loan facility of $84,000 at an interest rate equal to the three-month US dollar LIBOR was Short-term lines of credit The Company’s Indian subsidiary, WNS Global Services Private Limited (“WNS Global”), has unsecured lines of credit with banks amounting to $71,115 (based on the exchange rate on March 31, 2022). The Company has also established a line of credit in the UK amounting to $12,980 (based on the exchange rate on March 31, 2022). The Company has also established a line of credit in North America amounting to $10,000. Further the Company has also established a line of credit in South Africa amounting to $2,054 (based on the exchange rate March 31, 2022). As at March 31, 2022, no amounts were drawn under these lines of credit.

Financial instruments

Financial instruments	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Financial instruments	14. Financial instruments Financial instruments by category The carrying value and fair value of financial instruments by class as at March 31, 2022 are as follows: Financial assets Financial Financial Financial Total carrying value Total fair value Cash and cash equivalents $ 108,153 $ — $ — $ 108,153 $ 108,153 Investment in fixed deposits 41,827 — — 41,827 41,827 Investments in marketable securities and mutual funds — 263,013 — 263,013 263,013 Trade receivables 100,522 — — 100,522 100,522 Unbilled revenue (1) 86,786 — — 86,786 86,786 Funds held for clients 11,643 — — 11,643 11,643 Prepayments and other assets (2) 6,283 — — 6,283 6,283 Other non-current (3) 13,509 — — 13,509 13,509 Derivative assets — 556 13,044 13,600 13,600 Total carrying value $ 368,723 $ 263,569 $ 13,044 $ 645,336 $ 645,336 Financial liabilities Financial Financial Financial Total carrying value Total fair Value Trade payables $ 27,829 $ — $ — $ 27,829 $ 27,829 Other employee obligations (4) 95,098 — — 95,098 95,098 Provisions and accrued expenses 36,752 — — 36,752 36,752 Lease liabilities 166,994 — — 166,994 166,994 Other liabilities (5) 2,015 — — 2,015 2,015 Derivative liabilities — 2,295 4,578 6,873 6,873 Total carrying value $ 328,688 $ 2,295 $ 4,578 $ 335,561 $ 335,561 Notes: (1) Excluding non-financial (2) Excluding non-financial (3) Excluding non-financial (4) Excluding non-financial (5) Excluding non-financial The carrying value and fair value of financial instruments by class as at March 31, 2021 are as follows: Financial assets Financial Financial Financial Total carrying value Total fair value Cash and cash equivalents $ 105,633 $ — $ — $ 105,633 $ 105,633 Investment in fixed deposits 38,699 — — 38,699 38,699 Investments in marketable securities and mutual funds — 250,852 — 250,852 250,852 Trade receivables 83,387 — — 83,387 83,387 Unbilled revenue (1) 66,212 — — 66,212 66,212 Funds held for clients 12,139 — — 12,139 12,139 Prepayments and other assets (2) 4,757 — — 4,757 4,757 Other non-current (3) 13,790 — — 13,790 13,790 Derivative assets — 2,619 7,104 9,723 9,723 Total carrying value $ 324,617 $ 253,471 $ 7,104 $ 585,192 $ 585,192 Financial liabilities Financial Financial Financial Total carrying value Total fair Value Trade payables $ 28,015 $ — $ — $ 28,015 $ 28,015 Long-term debt (includes current portion) (4) 16,800 — — 16,800 16,800 Other employee obligations (5) 74,511 — — 74,511 74,511 Provisions and accrued expenses 23,933 — — 23,933 23,933 Lease liabilities 191,907 — — 191,907 191,907 Other liabilities (6) 1,803 — — 1,803 1,803 Derivative liabilities — 1,068 5,460 6,528 6,528 Total carrying value $ 336,969 $ 1,068 $ 5,460 $ 343,497 $ 343,497 Notes: (1) Excluding non-financial (2) Excluding non-financial (3) Excluding non-financial (4) Excluding non-financial (5) Excluding non-financial (6) Excluding non-financial For the financial assets and liabilities subject to offsetting or similar arrangements, each agreement between the Company and the counterparty allows for net settlement of the relevant financial assets and liabilities when both elect to settle on a net basis. In the absence of such an election, financial assets and liabilities will be settled on a gross basis. Financial assets and liabilities subject to offsetting, enforceable master netting arrangements or similar agreements as at March 31, 2022 are as follows: Description of types of financial assets Gross amounts of recognized financial assets Gross amounts of recognized financial liabilities offset in the statement of financial position Net amounts of financial assets presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial Instruments Cash collateral received Derivative assets $ 13,600 $ — $ 13,600 $ (646 ) $ — $ 12,954 Total $ 13,600 $ — $ 13,600 $ (646 ) $ — $ 12,954 Description of types of financial liabilities Gross amounts of recognized financial liabilities Gross amounts of recognized financial assets offset in the statement of financial position Net amounts of financial liabilities presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial instruments Cash collateral pledged Derivative liabilities $ 6,873 $ — $ 6,873 $ (646 ) $ — $ 6,227 Total $ 6,873 $ — $ 6,873 $ (646 ) $ — $ 6,227 Financial assets and liabilities subject to offsetting, enforceable master netting arrangements or similar agreements as at March 31, 2021 are as follows: Description of types of financial assets Gross amounts of recognized financial assets Gross amounts of recognized financial liabilities offset in the statement of financial position Net amounts of financial assets presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial Instruments Cash collateral received Derivative assets $ 9,723 $ — $ 9,723 $ (4,392 ) $ — $ 5,331 Total $ 9,723 $ — $ 9,723 $ (4,392 ) $ — $ 5,331 Description of types of financial liabilities Gross amounts of recognized financial liabilities Gross amounts of recognized financial assets offset in the statement of financial position Net amounts of financial liabilities presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial instruments Cash collateral pledged Derivative liabilities $ 6,528 $ — $ 6,528 $ (4,392 ) $ — $ 2,136 Total $ 6,528 $ — $ 6,528 $ (4,392 ) $ — $ 2,136 Fair value hierarchy The following is the hierarchy for determining and disclosing the fair value of financial instruments by valuation technique: Level 1 — quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 — other techniques for which all inputs have a significant effect on the recorded fair value are observable, either directly or indirectly. Level 3 — techniques which use inputs that have a significant effect on the recorded fair value that are not based on observable market data. The fair value is estimated using the discounted cash flow approach and market rates of interest. The valuation technique involves assumptions and judgments regarding risk characteristics of the instruments, discount rates and future cash flows. The Company uses valuation techniques in measuring the fair value of financial instruments, where active market quotes are not available. In applying the valuation techniques, the Company makes maximum use of market inputs, and uses estimates and assumptions that are, as far as possible, consistent with observable data that market participants would use in pricing the instrument. Where applicable data is not observable, the Company uses its best estimate about the assumptions that market participants would make. These estimates may vary from the actual prices that would be achieved in an arm’s length transaction at the reporting date. The assets and liabilities measured at fair value on a recurring basis as at March 31, 2022 are as follows: Fair value measurement at reporting date using Description March 31, 2022 Quoted prices in Significant other observable (Level 2) Significant unobservable Assets Financial assets at FVTPL Foreign exchange contracts $ 556 $ — $ 556 $ — Investments in marketable securities and mutual funds 263,013 262,602 411 — Financial assets at FVOCI Foreign exchange contracts 13,044 — 13,044 — Total assets $ 276,613 $ 262,202 $ 14,011 $ — Liabilities Financial liabilities at FVTPL Foreign exchange contracts $ 2,295 $ — $ 2,295 $ — Financial liabilities at FVOCI Foreign exchange contracts 4,578 — 4,578 — Interest rate swaps — — — — Total liabilities $ 6,873 $ — $ 6,873 $ — The assets and liabilities measured at fair value on a recurring basis as at March 31, 2021 are as follows: Fair value measurement at reporting date using Description March 31, 2021 Quoted prices in Significant Other observable inputs (Level 2) Significant unobservable inputs (Level 3) Assets Financial assets at FVTPL Foreign exchange contracts $ 2,619 $ — $ 2,619 $ — Investments in marketable securities and mutual funds 250,852 250,439 413 — Financial assets at FVOCI Foreign exchange contracts 7,104 — 7,104 — Total assets $ 260,575 $ 250,439 $ 10,136 $ — Liabilities Financial liabilities at FVTPL Foreign exchange contracts $ 1,068 $ — $ 1,068 $ — Financial liabilities at FVOCI Foreign exchange contracts 5,234 — 5,234 — Interest rate swaps 226 — 226 — Total liabilities $ 6,528 $ — $ 6,528 $ — During the years ended March 31, 2022 and 2021, there were no transfers between Level 1 and Level 2 fair value measurements, and no transfers into and out of Level 3 fair value measurements. Fair value on a non-recurring The non-recurring Derivative financial instruments The primary risks managed by using derivative instruments are foreign currency exchange risk and interest rate risk. Forward and option contracts up to 24 months on various foreign currencies are entered into to manage the foreign currency exchange rate risk on forecasted revenue denominated in foreign currencies and monetary assets and liabilities held in non-functional The following table presents the notional values of outstanding foreign exchange forward contracts, foreign exchange option contracts and interest rate swap contracts: As at March 31, 2022 March 31, 2021 Forward contracts (Sell) In US dollars $ 316,651 $ 260,999 In Pound Sterling 99,006 104,638 In Euro 21,811 26,395 In Australian dollars 27,290 29,076 Others 20,406 21,017 $ 485,164 $ 442,125 Option contracts (Sell) In US dollars $ 204,773 $ 137,687 In Pound Sterling 88,899 92,159 In Euro 26,147 33,202 In Australian dollars 38,004 45,022 Others — — $ 357,823 $ 308,070 Interest rate swap contracts In US dollars — 16,800 The amount of gain/ (loss) reclassified from other comprehensive income into consolidated statement of income in respective line items for the years ended March 31, 2022, 2021 and 2020 are as follows: Year ended March 31, 2022 2021 2020 Revenue $ 3,451 4,237 $ 12,695 Foreign exchange gain/(loss), net 93 (222 ) 543 Finance expense (217 ) (460 ) 171 Income tax related to amounts reclassified into consolidated statement of income (1,150 ) 425 (1,947 ) Total $ 2,177 3,980 $ 11,462 As at March 31, 2022, a gain amounting to $2,135 on account of c a Due to the discontinuation of cash flow hedge accounting on account of non-occurrence COVID-19. Financial risk management Financial risk factors The Company’s activities expose it to a variety of financial risks: market risk, interest rate risk, credit risk and liquidity risk. The Company’s primary focus is to foresee the unpredictability of financial markets and seek to minimize potential adverse effects on its financial performance. The primary market risk to the Company is foreign exchange risk. The Company uses derivative financial instruments to mitigate foreign exchange related risk exposures. The Company’s exposure to credit risk is influenced mainly by the individual characteristic of each customer and the concentration of risk from the top few customers. The demographics of the customer including the default risk of the industry and country in which the customer operates also has an influence on credit risk assessment. The Company does not enter into or trade financial instruments, including derivative financial instruments, for speculative purposes. Risk management procedures The Company manages market risk through treasury operations. Senior management and the Board of Directors approve the Company’s treasury operations’ objectives and policies. The activities of treasury operations include management of cash resources, implementation of hedging strategies for foreign currency exposures, implementation of borrowing strategies and monitoring compliance with market risk limits and policies. The Company’s foreign exchange committee, comprising the Director nominated by the Board, Group Chief Executive Officer and Group Chief Financial Officer, is the approving authority for all hedging transactions. Components of market risk Exchange rate or currency risk The Company’s exposure to market risk arises principally from exchange rate risk. Although substantially all of the Company’s revenue is denominated in pound sterling and US dollars, a significant portion of expenses for the year ended March 31, 2022 (net of payments to repair centers made as part of the Company’s WNS Auto Claims BPM segment) were incurred and paid in Indian rupees. The exchange rates among the Indian rupee, the pound sterling and the US dollar have changed substantially in recent years and may fluctuate substantially in the future. The Company hedges a portion of forecasted external and inter-company revenue denominated in foreign currencies with forward contracts and options. Based upon the Company’s level of operations for the year ended March 31, 2022, a sensitivity analysis shows that a 10% appreciation or depreciation in the pound sterling against the US dollar would have increased or decreased, respectively, the Company’s revenue for the year ended March 31, 2022 by approximately $32,736. Similarly, a 10% appreciation or depreciation in the Indian rupee against the US dollar would have increased or decreased, respectively, the Company’s expenses incurred and paid in Indian rupee for the year ended March 31, 2022 by approximately $40,997. The foreign currency risk from non-d e As at March 31, 2022 US Dollar Pound Sterling Indian Rupees Australian Dollar Euro Other currencies Total Cash and cash equivalents $ 3,412 1,813 — 54 899 196 $ 6,374 Investment 600 — — — — — 600 Trade receivables 127,640 22,934 1,363 7,366 11,631 3,064 173,998 Unbilled revenue 7,105 4,460 — — 4,304 537 16,406 Prepayments and other current assets 205 66 55 2 246 — 574 Other non-current 3 — — — — 16 19 Trade payables (33,849 ) (74,701 ) (5,576 ) (103 ) (20,627 ) (467 ) (135,323 ) Provisions and accrued expenses (4,493 ) (1,084 ) (56 ) — (446 ) (71 ) (6,150 ) Pension and other employee obligations — (794 ) — — (1 ) (441 ) (1,236 ) Lease liabilities — — — — (4,736 ) (27 ) (4,763 ) Other liabilities — (14 ) — — (2 ) — (16 ) Net assets/ (liabilities) $ 100,623 (47,320 ) (4,214 ) 7,319 (8,732 ) 2,807 $ 50,483 The foreign currency risk from non-derivative As at March 31, 2021 US Dollar Pound Sterling Indian Rupees Australian Dollar Euro Other currencies Total Cash and cash equivalents $ 2,739 1,818 — 61 1,024 314 $ 5,956 Trade receivables 116,135 34,041 1,269 7,411 10,911 3,543 173,310 Unbilled revenue 4,569 3,954 — — 3,271 275 12,069 Prepayments and other current assets 108 44 57 — 43 — 252 Other non-current 3 — — — — 16 19 Trade payables (44,492 ) (91,359 ) (5,770 ) — (20,540 ) (1,248 ) (163,409 ) Provisions and accrued expenses (3,886 ) (1,035 ) — (83 ) (587 ) — (5,591 ) Pension and other employee obligations (302 ) — — — (29 ) (347 ) (678 ) Lease liabilities — — — — (3,635 ) (52 ) (3,687 ) Other liabilities (1 ) (7 ) (2 ) (2 ) (7 ) (19 ) Net assets/ (liabilities) $ 74,873 (52,544 ) (4,444 ) 7,387 (9,544 ) 2,494 $ 18,222 Other currencies include currencies such as the Swiss Franc (CHF), Singapore Dollar (SGD), Philippine Peso (PHP), Canadian Dollar (CAD), Polish Zloty (PLN), Sri Lankan Rupee (LKR), Romanian Leu (RON), South African Rand (ZAR), New Zealand Dollar (NZD), Hong Kong Dollar (HKD), United Arab Emirates Dirham (AED), Chinese Yuan Renminbi (CNY), Costa Rican colon (CRC), Danish Krone (DKK), Swedish Krona (SEK), Malaysian Ringgit (MYR), Omani Riyal (OMR) and Turkish Lira (TRY). As at March 31, 2022, every 10% appreciation or depreciation of the respective foreign currencies compared to the functional currency of the Company would impact the Company’s profit before tax from operating activities by approximately $5,876. Interest rate risk The Company’s exposure to interest rate risk arises from borrowings which have a floating rate of interest, which is linked to the US dollar LIBOR. The risk is managed by the Company by maintaining an appropriate mix of fixed and floating rate borrowings and by the use of interest rate swap contracts. The costs of floating rate borrowings may be affected by the fluctuations in the interest rates. In connection with the term loan facilities entered into during the year ended March 31, 2017, the Company entered into interest rate swap agreements with the banks in during the year ended March 31, 2017. These swap agreements effectively convert the term loans from variable US dollar LIBOR interest rates to fixed rates, thereby managing the Company’s exposure to changes in market interest rates under the term loans. As at March 31, 2022, there was no amount outstanding under these swap agreements. The Company monitors its positions and does not anticipate non-performance Credit risk Credit risk arises from the possibility that customers may not be able to settle their obligations as agreed. Trade receivables are typically unsecured and are derived from revenue earned from customers primarily located in the UK and the US. Credit risk is managed through periodic assessment of the financial reliability of customers, taking into account the financial condition, current economic trends, analysis of historical bad debts and ageing of trade receivables. The credit risk on marketable securities, FMPs, mutual funds, bank deposits and derivative financial instruments is limited because the counterparties are banks and mutual funds with high credit ratings assigned by international credit-rating agencies. The maximum exposure to credit risk at the reporting date is primarily from trade receivables and unbilled revenue which amounted to $100,522 and $87,032, respectively as at March 31, 2022 and $83,387 and $66,403, respectively, as at March 31, 2021. The Company provides loss allowance using the ECL model on trade receivables and unbilled revenue with no significant financing component at an amount equal to lifetime ECL (Refer Note 7). The following table gives details in respect of the percentage of revenue generated from the Company’s top customer and top five customers: Year ended March 31, 2022 2021 2020 Revenue from top customer 7.3 % 8.1 % 6.9 % Revenue from top five customers 27.1 % 26.8 % 25.1 % Liquidity risk Liquidity risk is the risk that the Company will encounter difficulty in meeting the obligations associated with its financial liabilities that are settled by delivering cash or another financial asset. The Company’s approach to managing liquidity risk is to ensure, as far as possible, that it will always have sufficient liquidity to meet its liabilities when due, under normal and stressed conditions, without incurring unacceptable losses or risking damage to its reputation. Typically, the Company ensures that it has sufficient cash on demand to meet expected operational expenses and service financial obligations. In addition, the Company has concluded arrangements with reputable banks and has unused lines of credit of $96,149 as at March 31, 2022 that could be drawn upon, should there be a need. The contractual maturities of financial liabilities are as follows: As at March 31, 2022 Less than 1 Year 1-2 years 2-5 years Total Trade payables $ 27,829 $ — $ — $ 27,829 Provisions and accrued expenses 36,752 — — 36,752 Other liabilities 2,015 — — 2,015 Other employee obligations 95,098 — — 95,098 Derivative financial instruments 6,042 831 — 6,873 Total (2) (3) $ 167,736 $ 831 $ — $ 168,567 Notes: (1) For contractual maturities of lease liabilities refer note 12. (2) Non-financial As at March 31, 2021 Less than 1 Year 1-2 years 2-5 years Total Long-term debt (includes current portion) (1) $ 16,800 $ — $ — $ 16,800 Trade payables 28,015 — — 28,015 Provisions and accrued expenses 23,933 — — 23,933 Other liabilities 1,803 — — 1,803 Other employee obligations 74,511 — — 74,511 Derivative financial instruments 4,491 2,037 — 6,528 Total (2) (3) $ 149,553 $ 2,037 $ — $ 151,590 Notes: (1) Before netting off debt issuance cost of $52. (2) For contractual maturities of lease liabilities refer note 12. (3) Non-financial The balanced view of liquidity and financial indebtedness is stated in the table below. This calculation of the net cash position is used by the management: As at March 31, 2022 March 31, 2021 Cash and cash equivalents $ 108,153 $ 105,633 Investments 304,840 289,551 Long-term debt (includes current portion) (1) — (16,800 ) Net cash position $ 412,993 $ 378,384 Note: (1) Before netting off debt issuance cost of $Nil and $52 as at March 31, 2022 and March 31, 2021, respectively.

Pension and other employee obli

Pension and other employee obligations	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Pension and other employee obligations	15. Pension and other employee obligations Pension and other employee obligations consist of the following: As at March 31, 2022 March 31, 2021 Current: Salaries and bonus $ 93,210 $ 72,314 Pension 1,365 115 Withholding taxes on salary and statutory payables 11,193 10,157 Total $ 105,768 $ 82,586 Non-current: Pension and other obligations $ 16,238 $ 19,589 Total $ 16,238 $ 19,589 Employee benefit costs consist of the following: Year ended March 31, 2022 2021 2020 Salaries and bonus $ 608,064 $ 498,431 $ 487,246 Employee benefit plans: Defined contribution plan 15,296 12,648 12,675 Defined benefit plan 4,339 2,839 2,634 Share-based compensation expense (Refer Note 24) 44,165 38,230 37,520 Total $ 671,864 $ 552,148 $ 540,075 Employee benefit costs is recognized in the following line items in the consolidated statement of income: Year ended March 31, 2022 2021 2020 Cost of revenue $ 503,748 $ 404,431 $ 399,441 Selling and marketing expenses 46,614 43,601 40,816 General and administrative expenses 121,502 104,116 99,818 Total $ 671,864 $ 552,148 $ 540,075 Defined contribution plan The Company’s contributions to defined contribution plans are as follows: Year ended March 31, 2022 2021 2020 India $ 10,758 $ 8,681 $ 8,772 United States 2,110 1,770 1,548 United Kingdom 825 898 892 South Africa 801 596 789 Sri Lanka 567 512 480 Philippines 235 191 194 Total $ 15,296 $ 12,648 $ 12,675 Defined benefit plan The net periodic cost recognized by the Company in respect of gratuity payments under the Company’s gratuity plans covering eligible employees of the Company in India, the Philippines and Sri Lanka is as follows: Year ended March 31, 2022 2021 2020 Service cost $ 3,368 $ 2,047 $ 1,915 Interest on the net defined benefit liability 971 792 719 Net gratuity cost $ 4,339 $ 2,839 $ 2,634 As at March 2022 March 2021 Change in projected benefit obligations Obligation at beginning of the year $ 17,220 $ 13,524 Foreign currency translation (790 ) 441 Service cost 3,368 2,047 Interest cost 1,097 869 Benefits paid (2,374 ) (1,116 ) Business combinations 1,223 — Actuarial (gain)/loss From changes in demographic assumptions (1,334 ) 1,061 From changes in financial assumptions 238 341 From actual experience compared to assumptions (188 ) 53 Benefit obligation at end of the year $ 18,460 $ 17,220 Change in plan assets Plan assets at beginning of the year $ 1,314 $ 1,146 Foreign currency translation (51 ) 40 Expected return on plan assets 126 77 Actual contributions 2,415 1,031 Benefits paid (2,260 ) (1,023 ) Business combinations 1,191 — Actuarial gain 10 43 Plan assets at end of the year $ 2,745 $ 1,314 Accrued pension liability Current $ 1,365 $ 115 Non-current 14,350 15,791 Net amount recognized $ 15,715 $ 15,906 Present value of funded defined benefit obligation $ 18,035 $ 16,378 Fair value of plan assets (2,745 ) (1,314 ) 15,290 15,064 Present value of unfunded defined benefit obligation $ 425 $ 842 Weighted average duration of defined benefit obligation (both funded and unfunded) 5.1 years 8.9 years Net amount recognized relating to the Company’s India plan, Philippines plan and Sri Lanka plan was $15,336, $64 and $315 as at March 31, 2022 and was $15,131, $95 and $680 as at March 31, 2021, respectively. The assumptions used in accounting for the gratuity plans are as follows: Year ended March 31, 2022 2021 2020 Discount rate: India 6.2% to 6.6% 6.4% 6.3% to 6.6% Philippines 1.7% 3.1% 3.7% Sri Lanka 16.4% 8.1% 9.8% Rate of increase in compensation level 8.0% to 10.0% 7.0% to 8.0% 7.0% to 8.0% Expected rate of return on plan assets 6.5% to 6.6% 6.4% 6.6% The Company evaluates these assumptions annually based on its long-term plans of growth and industry standards. The discount rates are based on current market yields on government securities adjusted for a suitable risk premium to reflect the additional risk for high quality corporate bonds. As at March 31, 2022, for each of the Company’s defined benefit plans, the sensitivity of the defined benefit obligation to a change in each significant actuarial assumption is as follows: India Philippines Sri Lanka Discount rate: Increase in discount rate by 1% (4.7 )% (1.1 )% (5.2 )% Decrease in discount rate by 1% 5.2 % 1.1 % 5.8 % Rate of increase in compensation level: Increase in salary escalation rate by 1% 3.7 % 0.6 % 5.7 % Decrease in salary escalation rate by 1% (3.5 )% (0.6 )% (5.1 )% Each sensitivity amount is calculated assuming that all other assumptions are held constant. The Company is not able to predict the extent of likely future changes in these assumptions, but based on past experience, the discount rate for each plan could change by up to 1% within a 12-month As at March 31, 2022, $1,162 and $1,583 ($4 and $1,310 as at March 31, 2021) of the fund assets are invested with LIC and ALICPL, respectively. Of the funds invested with LIC, approximately 40% and 60% of the funds are invested in unquoted government securities and money market instruments, respectively. Of the funds invested with ALICPL, approximately 77% and 23% are invested in unquoted government securities and money market instruments, respectively. Since the Company’s plan assets are managed by third party fund administrators, the contributions made by the Company are pooled with the corpus of the funds managed by such fund administrators and invested in accordance with regulatory guidelines. The Company’s funding policy is to contribute to the plan amounts necessary on an actuarial basis to, at a minimum, satisfy the minimum funding requirements. Additional discretionary contributions above the minimum funding requirement can be made and are generally based on adjustment for any over or under funding. The expected benefits are based on the same assumptions used to measure the Company’s defined benefit obligations as at March 31, 2022. The Company expects to contribute $3,029 to defined benefit plan for the year ending March 31, 2023. The maturity analysis of the Company’s defined benefit payments is as follows: Amount 2023 $ 3,164 2024 3,128 2025 3,194 2026 3,195 2027 3,437 Thereafter 16,143 $ 32,261

Provisions and accrued expenses

Provisions and accrued expenses	12 Months Ended
	Mar. 31, 2022
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Provisions and accrued expenses	16. Provisions and accrued expenses Provisions and accrued expenses consist of the following: As at March 31, 2022 March 31, 2021 Accrued expenses 36,752 23,933 Total $ 36,752 $ 23,933

Contract liabilities

Contract liabilities	12 Months Ended
	Mar. 31, 2022
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Contract liabilities	17. Contract liabilities Contract liabilities consists of the following: As at March 31, 2022 March 31, 2021 Current: Payments in advance of services $ 8,344 $ 8,998 Advance billings 5,081 3,489 Others 298 198 Total $ 13,723 $ 12,685 Non-current: Payments in advance of services $ 12,072 $ 15,876 Advance billings 1,226 752 Others 16 17 Total $ 13,314 $ 16,645

Other liabilities

Other liabilities	12 Months Ended
	Mar. 31, 2022
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Other liabilities	18. Other liabilities Other liabilities consist of the following: As at March 31, 2022 March 31, 2021 Current: Withholding taxes and value added tax payables $ 8,164 $ 9,288 Other liabilities 3,187 2,204 Total $ 11,351 $ 11,492 Non-current: Other liabilities 78 211 Total $ 78 $ 211

Share capital

Share capital	12 Months Ended
	Mar. 31, 2022
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Share capital	19. Share capital As at March 31, 2022, the authorized share capital was £6,100 divided into 60,000,000 ordinary shares of 10 pence each and 1,000,000 preferred shares of 10 pence each. The Company had 48,849,907 ordinary shares outstanding as at March 31, 2022. There were no preferred shares outstanding as at March 31, 2022. As at March 31, 2021, the authorized share capital was £6,100 divided into 60,000,000 ordinary shares of 10 pence each and 1,000,000 preferred shares of 10 pence each. The Company had 49,402,203 ordinary shares (excluding 1,100,000 treasury shares) outstanding as at March 31, 2021. There were no preferred shares outstanding as at March 31, 2021. Treasury shares In March 2018, the shareholders of the Company authorized the repurchase of up to 3,300,000 of the Company’s ADSs, at a price range of $10 to $100 per ADS. Pursuant to the terms of the repurchase program, the Company’s ADSs may be purchased in the open market from time to time for 36 months from March 30, 2018, the date of shareholders’ approval. During the year ended March 31, 2020, the Company received authorization from the Board of Directors to cancel, and cancelled, 2,200,000 ADSs that were held as treasury shares for an aggregate cost of $120,154. The effect of the cancellation of these treasury shares was recognized in share capital amounting to $281 and in share premium amounting to $119,873, in compliance with Jersey law. There was no effect on the total shareholders’ equity as a result of this cancellation. During the year ended March 31, 2021, the Company purchased the balance 1,100,000 ADSs in the open market for a total consideration of $78,563 (including transaction costs $11) and completed the authorized repurchases under the above-mentioned share repurchase program. The Company paid $55 towards cancellation fees for ADSs in relation to the repurchase of 1,100,000 ADSs. The Company funded the repurchases under the repurchase program with cash on hand. During the year ended March 31, 2021, the shareholders of the Company authorized a new share repurchase program for the repurchase of up to 3,300,000 of the Company’s ADSs, each representing one ordinary share, at a price range of $10 to $110 per ADS. Pursuant to the terms of the repurchase program, the Company’s ADSs may be purchased in the open market from time to time for 36 months from April 1, 2021 to March 31, 2024. The Company is not obligated under the repurchase program to repurchase a specific number of ADSs, and the repurchase program may be suspended at any time at the Company’s discretion. The Company intends to fund the repurchase with cash on hand. During the year ended March 31, 2022, the Company purchased 1,100,000 ADSs in the open market for a total consideration of $85,038 (including transaction costs $11) under the above-mentioned share repurchase program. The Company funded the repurchases under the repurchase program with cash on hand. During the year ended March 31, 2022, the Company received authorization from the Board of Directors to cancel, and cancelled, 2,200,000 ADSs that were held as treasury shares for an aggregate cost of $163,711 (including share cancellation charges $110). The effect of the cancellation of these treasury shares was recognized in share capital amounting to $302 and in share premium amounting to $163,409, in compliance with Jersey law. There was no effect on the total shareholders’ equity as a result of this cancellation.

Revenue

Revenue	12 Months Ended
	Mar. 31, 2022
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Revenue	20. Revenue Disaggregation of revenue In the following tables, revenue is disaggregated by service type, major industries serviced, contract type and geography. Revenue by service type Year ended March 31, 2022 2021 2020 Industry-specific $ 431,770 $ 372,505 $ 364,022 Finance and accounting 248,572 212,563 211,069 Customer experience services 189,615 154,368 192,466 Research and analytics 116,081 94,545 96,337 Auto claims 96,123 54,620 46,418 Others 27,639 24,042 17,946 Total $ 1,109,800 $ 912,643 $ 928,258 Revenue by industry Year ended March 31, 2022 2021 2020 Insurance* $ 332,335 $ 266,669 $ 257,586 Healthcare 196,614 172,878 146,622 Diversified businesses including manufacturing, retail, CPG, media and entertainment, and telecom 149,884 139,449 152,973 Travel and leisure 163,849 129,231 166,766 Shipping and logistics 85,258 63,530 56,064 Hi-tech and professional services 69,278 56,386 49,698 Banking and financial services 64,034 42,555 40,485 Utilities 48,548 41,945 58,064 Total $ 1,109,800 $ 912,643 $ 928,258 * Includes revenue disclosed under the Auto Claims BPM segment in Note 28. Revenue by contract type Year ended March 31, 2022 2021 2020 Full-time-equivalent $ 703,440 $ 592,868 $ 615,765 Transaction* 188,357 133,423 144,637 Subscription 102,859 98,176 83,135 Fixed price 63,570 42,371 43,518 Others 51,574 45,805 41,203 Total $ 1,109,800 $ 912,643 $ 928,258 * Includes revenue disclosed under the Auto Claims BPM segment in Note 28. Revenue by delivery location Year ended March 31, 2022 2021 2020 India $ 555,796 $ 463,908 $ 476,078 United States 168,493 150,418 134,031 Philippines 143,238 119,855 130,350 UK* 127,826 72,178 60,244 South Africa 56,735 51,625 68,051 Sri Lanka 16,282 15,748 13,766 China 13,880 12,740 12,399 Romania 12,756 13,107 17,433 Spain 5,314 5,224 8,959 Poland 4,989 4,816 3,649 Costa Rica 3,643 3,024 3,298 Australia 848 — — Total $ 1,109,800 $ 912,643 $ 928,258 * Includes revenue disclosed under the Auto Claims BPM segment in Note 28. Revenue by geography Refer Note 28 — External revenue. Contract balances Contract assets The movement in contract assets during the year ended March 31, 2022 is as follows: As at March 31, 2022 Sales Transition Upfront Total Opening balance $ 8,112 $ 17,656 $ 9,121 $ 34,889 Additions during the year 5,209 17,923 10,811 33,943 Amortization/recognition during the year (2,190 ) (7,352 ) (7,736 ) (17,278 ) Impairment loss recognized during the year (46 ) — — (46 ) Translation adjustments (240 ) (866 ) (400 ) (1,506 ) Closing balance $ 10,845 $ 27,361 $ 11,796 $ 50,002 The movement in contract assets during the year ended March 31, 2021 is as follows: As at March 31, 2021 Sales Transition Upfront Total Opening balance $ 7,427 $ 19,006 $ 9,932 $ 36,365 Additions during the year 2,365 7,151 5,008 14,524 Amortization/recognition during the year (1,816 ) (9,216 ) (6,725 ) (17,757 ) Impairment loss recognized during the year (351 ) — — (351 ) Translation adjustments 487 715 906 2,108 Closing balance $ 8,112 $ 17,656 $ 9,121 $ 34,889 Contract liabilities As at March 31, 2022 March 31, 2021 Contract liabilities: Payments in advance of services $ 20,416 $ 24,874 Advance billings 6,307 4,241 Others 314 215 Total $ 27,037 $ 29,330 Revenue recognized during the year ended March 31, 2022 and 2021, which was included in the contract liabilities balance at the beginning of the respective periods is as follows: As at March 31, 2022 March 31, 2021 Payments in advance of services $ 9,114 $ 7,695 Advance billings 2,742 3,168 Others 136 492 Total $ 11,992 $ 11,355 The estimated revenue expected to be recognized in the future relating to remaining performance obligations as at March 31, 2022 and March 31, 2021 is as follows: As at March 31, 2022 Less 1-2 years 2-5 More Total Transaction price allocated to remaining performance obligations $ 15,141 $ 5,475 $ 2,086 $ — $ 22,702 As at March 31, 2021 Less 1-2 years 2-5 More Total Transaction price allocated to remaining performance obligations $ 8,807 $ 7,842 $ 6,206 $ 14 $ 22,869 The Company does not disclose the value of unsatisfied performance obligations for: (i) contracts with an original expected length of one year or less; and (ii) contracts for which the Company recognizes revenue at the amount to which the Company has the right to invoice for services performed.

Expenses by nature

Expenses by nature	12 Months Ended
	Mar. 31, 2022
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Expenses by nature	21. Expenses by nature Expenses by nature consist of the following: Year ended March 31, 2022 2021 2020 Employee cost $ 671,864 $ 552,148 $ 540,075 Repair payments 82,954 43,942 32,047 Facilities cost 61,238 54,563 62,743 Depreciation 50,003 48,923 47,220 Legal and professional expenses 22,207 23,298 21,996 Travel expenses 4,878 1,927 22,373 Others 47,005 38,312 38,860 Total cost of revenue, selling and marketing and general and administrative expenses $ 940,149 $ 763,113 $ 765,314

Finance expense

Finance expense	12 Months Ended
	Mar. 31, 2022
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Finance expense	22. Finance expense Finance expense consists of the following: Year ended March 31, 2022 2021 2020 Interest expense on lease liabilities $ 12,657 $ 13,689 $ 14,782 Interest expense 461 552 2,169 Loss/(gain) on interest rate swaps 217 460 (171 ) Debt issuance cost 52 126 231 Total $ 13,387 $ 14,827 $ 17,011

Other income, net

Other income, net	12 Months Ended
	Mar. 31, 2022
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Other income, net	23. Other income, net Other income, net consists of the following: Year ended March 31, 2022 2021 2020 Net gain arising on financial assets designated as FVTPL $ 7,137 $ 6,352 $ 7,547 Interest income 3,772 3,702 3,840 Others, net 2,958 2,410 2,988 Total $ 13,867 $ 12,464 $ 14,375

Share-based payments

Share-based payments	12 Months Ended
	Mar. 31, 2022
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Share-based payments	24. Share-based payments The Company has two share-based incentive plans: the 2006 Incentive Award Plan adopted on June 1, 2006, as amended and restated in February 2009, September 2011 and September 2013 (which has expired) the “2006 Incentive Award Plan”, and the 2016 Incentive Award Plan effective from September 27, 2016, as amended and restated in September 2018 (the “2016 Incentive Award Plan”) (collectively referred to as the “Plans”). All the Plans are equity settled. Under the Plans, share-based options and RSUs may be granted to eligible participants. Options are generally granted for a term of ten years. Options and RSUs have a graded vesting period of up to four years. The Company settles employee share-based options and RSU exercises with newly issued ordinary shares. As at March 31, 2022, the Company had 3,317,713 ordinary shares available for future grants. Share-based compensation expense during the years ended March 31, 2022, 2021 and 2020 is as follows: Year ended March 31, 2022 2021 2020 Share-based compensation expense recorded in: $ $ $ Cost of revenue 5,155 4,890 4,589 Selling and marketing expenses 4,948 4,327 4,789 General and administrative expenses 34,062 29,013 28,142 Total share-based compensation expense $ 44,165 $ 38,230 $ 37,520 Upon exercise of RSUs, the Company issued 547,704, 768,563 and 780,420 shares during the years ended March 31, 2022, 2021 and 2020, respectively. Restricted share units The 2006 Incentive Award Plan and the 2016 Incentive Award Plan also allow for the grant of RSUs. Each RSU represents the right to receive one ordinary share and vests over a period of up to three years. (i) Movements in the number of RSUs dependent on non-market Shares Weighted Aggregate intrinsic value Outstanding as at March 31, 2020 884,590 $ 44.07 $ 38,020 Granted 362,795 43.26 Exercised (304,822 ) 42.14 Forfeited (18,514 ) 51.26 Outstanding as at March 31, 2021 924,049 $ 44.25 $ 66,938 Granted 295,441 74.14 Exercised (293,769 ) 47.24 Forfeited (40,264 ) 56.52 Outstanding as at March 31, 2022 885,457 $ 52.67 $ 75,698 RSUs exercisable 488,608 $ 45.53 $ 41,771 The fair value of RSUs is generally the market price of the Company’s shares on the date of grant. As at March 31, 2022, there was $8,397 of unrecognized compensation cost related to unvested RSUs. This amount is expected to be recognized over a weighted average period of 2.7 years. To the extent the actual forfeiture rate is different than what the Company has anticipated, share-based compensation expense related to these RSUs will be different from the Company’s expectations. The weighted average grant date fair value of RSUs granted during the year ended March 31, 2022, 2021 and 2020 was $74.14, $43.26, and $56.23, per ADS, respectively. The aggregate intrinsic value of RSUs exercised during the year ended March 31, 2022, 2021 and 2020 was $23,194, $20,354, and $26,522, respectively. The total grant date fair value of RSUs vested during the year ended March 31, 2022, 2021 and 2020 was $18,240, $15,912, and $16,213, respectively. The weighted average share price of RSU exercised during the year ended March 31, 2022, 2021 and 2020 was $78.95, $66.77, and $61.03, respectively. (ii) The 2006 Incentive Award Plan and the 2016 Incentive Award Plan also allow for the grant of RSUs based on the market price of the Company’s shares achieving a specified target over a period of time. The fair value of market-based share awards is determined using Monte-Carlo simulation. Movements in the number of RSUs dependent on market performance condition outstanding under the 2006 Incentive Award Plan and the 2016 Incentive Award Plan and their related weighted average fair values are as follows: Shares Weighted average fair value Aggregate intrinsic value Outstanding as at March 31, 2020 198,990 $ 13.09 $ 7,908 Granted — — Exercised (123,345 ) 12.62 Forfeited — — Lapsed — — Outstanding as at March 31, 2021 75,645 $ 14.10 $ 5,480 Granted — Exercised (16,245 ) 13.39 Forfeited — Lapsed — Outstanding as at March 31, 2022 59,400 14.30 $ 5,078 RSUs exercisable 59,400 $ 14.30 $ 5,078 On March 15, 2017, the Company modified the vesting period in respect of the RSUs as follows: a. for RSUs granted in April 2014, the vesting date has been extended to the fifth anniversary of the grant date (i.e. April 2019) b. for RSUs granted in April 2015, the vesting date has been extended to the fourth anniversary of the grant date (i.e. April 2019) c. for RSUs granted in April 2016, the vesting date has been extended to the fourth anniversary of the grant date (i.e. April 2020) Subsequent vesting of RSUs for each of the remaining years would be subject to continued employment. The incremental fair value was determined using Monte-Carlo simulation by reference to the difference between fair value of original RSUs as at modification date and the fair value of modified RSUs as at modification date. The additional cost as a result of such modification in respect of modified share awards amounted to $1,185. The additional cost is spread over the period from the modification date until the vesting date of the modified award, which differs from the vesting date of the original award. The incremental cost recognized in the current year (March 31, 2021: ) The aggregate intrinsic value of RSUs exercised during the year ended March 31, 2022, 2021 and 2020 was $1,205, $8,973, and $285, respectively. The weighted average share price of RSU exercised during the year ended March 31, 2022, 2021 and 2020 was $74.18, $72.75, and $56.97, respectively. As at March 31, 2022, there was $Nil of unrecognized compensation cost related to unvested market based RSUs. The weighted average grant date fair value of the RSUs granted during the years ended March 31, 2022, 2021 and 2020 was $Nil. (iii) RSUs related to total shareholder’s return (“TSR”) Movements in the number of RSUs linked to the TSR condition outstanding under the 2016 Incentive Award Plan and their related weighted average fair values are as follows: Shares Weighted Average Aggregate Intrinsic Outstanding as at March 31, 2020 533,253 $ 51.07 $ 22,919 Granted 314,771 35.22 Exercised (19,039 ) 36.52 Forfeited (2,775 ) 34.53 Lapsed — — Outstanding as at March 31, 2021 826,210 $ 45.45 $ 59,851 Granted 154,110 78.80 Exercised (15,209 ) 50.22 Forfeited (15,111 ) 38.70 Lapsed (50,550 ) 57.20 Outstanding as at March 31, 2022 899,450 50.53 76,894 RSUs exercisable 268,777 $ 42.92 $ 22,978 During the year ended March 31, 2022, the Company issued 154,110 RSUs (March 31, 2021: 314,771 RSUs) to certain employees. The conditions for the vesting of these RSUs are linked to the TSR of the Company in addition to the condition of continued employment with the Company through the applicable vesting period. The performance of these RSUs shall be assessed based on the TSR of the custom peer group (based on percentile rank) and the industry index (based on outperformance rank). The RSUs granted with the TSR condition shall vest on the third anniversary of the grant date, subject to the participant’s continued employment with the Company through the applicable vesting date and achievement of the specified conditions of stock performance and TSR parameters. The fair value of these RSUs is determined using Monte-Carlo simulation. The weighted average grant date fair value of RSUs granted during the year ended March 31, 2022, 2021 and 2020 was $78.80, $35.22 and $63.10, per ADS, respectively. The stock compensation expense charged during the year ended March 31, 2022 was $5,892 (March 31, 2021: $5,213). As at March 31, 2022, there was $6,405 of unrecognized compensation cost related to these RSUs. This amount is expected to be recognized over a weighted average period of 1.9 years. The total grant date fair value of these RSUs vested during the year ended March 31, 2022, 2021 and 2020 was $5,338, $ The aggregate intrinsic value of RSUs exercised during the year ended March 31, 2022, 2021 and 2020 was $1,201, $1,413, and $Nil, respectively. The weighted average share price of RSU exercised during the year ended March 31, 2022, 2021 and 2020 was $78.97, $74.20, and $Nil, respectively. Performance share units The 2006 Incentive Award Plan and 2016 Incentive Award Plan also allow for grant of performance share units (“PSUs”). Each PSU represents the right to receive one ordinary share based on the Company’s performance against specified non-market Movements in the number of PSUs outstanding under the 2006 Incentive Award Plan and the 2016 Incentive Award Plan and their related weighted average fair values are as follow: Shares Weighted average fair value Aggregate intrinsic value Outstanding as at March 31, 2020 911,518 $ 36.67 $ 39,176 Granted 193,249 68.05 Exercised (321,357 ) 30.36 Forfeited (12,121 ) 53.38 Outstanding as at March 31, 2021 771,289 $ 43.21 $ 55,870 Granted 275,245 73.46 Exercised (192,053 ) 35.65 Forfeited (16,173 ) 60.58 Outstanding as at March 31, 2022 838,308 49.19 71,667 PSUs exercisable 341,072 $ 38.64 $ 29,158 The fair value of PSUs is generally the market price of the Company’s shares on the date of grant, and assumes that performance targets will be achieved. As at March 31, 2022, there was $9,763 of unrecognized compensation costs related to unvested PSUs, net of forfeitures. This amount is expected to be recognized over a weighted average period of 1.6 years. Over the performance period, the number of shares that will be issued will be adjusted upward or downward based upon the probability of achievement of the performance targets. The ultimate number of shares issued and the related compensation cost recognized as expense will be based on a comparison of the final performance metrics to the specified targets. The weighted average grant date fair value of PSUs granted during the years ended March 31, 2022, 2021 and 2020 was $ 73,46 The weighted average share price of PSU exercised during the year ended March 31, 2022, 2021 and 2020 was $77.89, $69.10 and $59.65, respectively. BBBEE program in South Africa The Company’s South African subsidiary has issued share appreciation rights to certain employees to be settled with the Company’s shares. As part of the settlement, the Company granted 1,135 RSUs during the year ended March 31, 2022 and 11,400 and 1,850 RSUs during the year ended March 31, 2021 which shall vest on the second anniversary, nine months and third anniversary, respectively, from the grant date. During the years ended March 31, 2020, 2019 and 2018, the Company granted shall vest on the fourth, third and fourth The total stock compensation expense in relation to these RSUs was $3,483 to be amortized over the vesting period of four years. The stock compensation expense charged during the years ended March 31, 2022 and 2021 was $324 and $871, respectively.

Income taxes

Income taxes	12 Months Ended
	Mar. 31, 2022
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Income taxes	25. Income taxes The domestic and foreign source component of profit/(loss) before income taxes is as follows: Year ended March 31, 2022 2021 2020 Domestic $ (11,150 ) $ (8,176 ) $ (2,795 ) Foreign 175,690 140,867 146,747 Profit before income taxes $ 164,540 $ 132,691 $ 143,952 The Company’s income tax expense consists of the following: Year ended March 31, 2022 2021 2020 Current taxes Domestic taxes $ — $ — $ — Foreign taxes 37,579 31,326 31,270 37,579 31,326 31,270 Deferred taxes Domestic taxes — — — Foreign taxes (5,140 ) (1,252 ) (4,087 ) (5,140 ) (1,252 ) (4,087 ) Income tax expense $ 32,439 $ 30,074 $ 27,183 Domestic taxes are Nil as the corporate rate of tax applicable to companies in Jersey, Channel Islands is 0%. Foreign taxes are based on applicable tax rates in each subsidiary’s jurisdiction. From fiscal 2012 until the year ended March 31, 2021, the Company started operations in various delivery centers in Mumbai, Pune, Chennai, Gurgaon, Noida, India registered under the Special Economic Zone scheme. Some of these operations are eligible for a 100% income tax exemption for a period of five years from the date of commencement of operations expiring between fiscal 2022 and fiscal 2024. Following the expiry of the 100% income tax exemption, these operations are eligible for a 50% income tax exemption expiring between fiscal 2026 and fiscal 2034. The Company’s operations in Costa Rica are eligible for a 50% income tax exemption from fiscal 2018 to fiscal 2021. Between fiscal 2016 and fiscal 2022, the Company commenced operations in delivery centers in the Philippines that are eligible for various tax exemption benefits expiring between fiscal 2020 and fiscal 2026. Following the expiry of the tax benefits, income generated by our Philippines subsidiary, WNS Global Services Philippines Inc., will be taxed at the prevailing special tax rate, which is currently 5.0% on gross profit. As per The Corporate Recovery and Tax Incentives for Enterprises Act (“CREATE”) which is effective from April, 2021, enterprises will be taxed at 5% on gross profit for a fixed period of 10 years. Our operations in Sri Lanka were eligible to claim income tax exemption with respect to the profits earned from export revenue until fiscal 2018 and have been taxed at 14% on a net basis with effect from April 1, 2018 until December 31, 2019. From January 1, 2020, our operations in Sri Lanka are eligible to claim income tax exemption with respect to the profits earned from export revenue. If the income tax exemptions described above were not available, the additional income tax expense at the respective statutory rates in India, Sri Lanka and Philippines would have been approximately $20,885, $11,102 and $17,692 for the years ended March 31, 2022, 2021 and 2020, respectively. Such additional tax would have decreased the basic and diluted earnings per share for the year ended March 31, 2022 by $0.43 and $0.41, respectively ($0.22 and $0.21, respectively for the year ended March 31, 2021 and $0.36 and $0.34, respectively, for the year ended March 31, 2020). Income taxes recognized directly in equity are as follows: Year ended March 31, 2022 2021 2020 Current taxes: Excess tax deductions related to share-based payments (1,062 ) (729 ) (998 ) $ (1,062 ) $ (729 ) $ (998 ) Deferred taxes: Excess tax deductions related to share-based payments (877 ) (1,640 ) 807 $ (877 ) $ (1,640 ) $ 807 Total income tax recognized directly in equity $ (1,939 ) $ (2,369 ) $ (191 ) Income taxes recognized in other comprehensive income are as follows: Year ended March 31, 2022 2021 2020 Current taxes — — — Deferred taxes: Unrealized gain/(loss) on cash flow hedging derivatives 2,698 1,089 (2,939 ) Pension liability 148 (248 ) (189 ) Total income tax recognized directly in other comprehensive income $ 2,846 $ 841 $ (3,128 ) The reconciliation of estimated income tax to income tax expense: Year ended March 31, 2022 2021 2020 Profit before income taxes $ 164,540 $ 132,691 $ 143,952 Income tax expense at tax rates applicable to individual entities 50,954 41,268 43,379 Effect of: Items not deductible for tax 358 401 414 Exempt income (20,557 ) (11,340 ) (18,380 ) Non tax deductible goodwill impairment — — 776 Losses in respect of which deferred tax asset not recognized due to uncertainty and ineligibility to carry forward 2,183 106 178 Recognition of unutilized tax benefits / Unrecognized losses utilized (56 ) (472 ) (264 ) Temporary difference that will reverse during tax holiday period 2,828 1,139 2,138 Change in tax rate and law (160 ) 1,228 55 Provision for uncertain tax position — — (409 ) State taxes 345 458 61 Employment related tax incentive (2,123 ) (1,734 ) (1,253 ) Others, net (1,333 ) (980 ) 488 Income tax expense $ 32,439 $ 30,074 $ 27,183 Deferred taxes for the year ended March 31, 2022 arising from temporary differences and unused tax losses can be summarized below: Opening Balance Additions due to acquisition Recognized in income Recognized in equity Recognized in/ Reclassified from other comprehensive income Foreign currency translation Closing balance Deferred tax assets: Property and equipment $ 6,188 $ 237 $ 254 $ — $ — $ (152 ) $ 6,527 Net operating loss carry forward 1,249 — (294 ) — — (23 ) 932 Accruals deductible on actual payment 10,549 153 1,743 — (148 ) (295 ) 12,002 Share-based compensation expense 21,036 — 3,678 877 — (661 ) 24,930 Others 799 — (33 ) — — (12 ) 754 Total deferred tax assets $ 39,821 $ 390 $ 5,348 $ 877 $ (148 ) $ (1,143 ) $ 45,145 Deferred tax liabilities: Intangible assets 11,967 1 32 — — (17 ) 11,983 Unrealized gain/(loss) on cash flow hedging and investments 1,387 — (117 ) — 2,698 (114 ) 3,854 Others 3,674 — 293 — — (134 ) 3,833 Total deferred tax liabilities $ 17,028 $ 1 $ 208 $ — $ 2,698 $ (265 ) $ 19,670 Net deferred tax assets/(liabilities) $ 22,793 $ 389 $ 5,140 $ 877 $ (2,846 ) $ (878 ) $ 25,475 Deferred taxes for the year ended March 31, 2021 arising from temporary differences and unused tax losses can be summarized below: Opening Balance Additions due to acquisition Recognized in statement of income Recognized in equity Recognized in/ Reclassified from other comprehensive income Foreign currency translation Closing balance Deferred tax assets: Property and equipment $ 5,592 $ — $ 40 $ — $ — $ 556 $ 6,188 Net operating loss carry forward 779 — 417 — — 53 1,249 Accruals deductible on actual payment 9,825 — (120 ) — 248 596 10,549 Share-based compensation expense 16,101 — 1,861 1,640 — 1,434 21,036 Minimum alternate tax 629 — (654 ) — — 25 — Others 130 — 610 — — 59 799 Total deferred tax assets $ 33,056 $ — $ 2,154 $ 1,640 $ 248 $ 2,723 $ 39,821 Deferred tax liabilities: Intangible assets 11,437 — 312 — — 218 11,967 Unrealized gain/(loss) on cash flow hedging and investments 352 — (52 ) — 1,089 (2 ) 1,387 Others 2,380 — 642 — — 652 3,674 Total deferred tax liabilities $ 14,169 $ — $ 902 $ — $ 1,089 $ 868 $ 17,028 Net deferred tax assets/(liabilities) $ 18,887 $ — $ 1,252 $ 1,640 $ (841 ) $ 1,855 $ 22,793 Deferred taxes for the year ended March 31, 2020 arising from temporary differences and unused tax losses can be summarized below: Opening Balance Transition Recognized in statement of income Recognized in equity Recognized in/ Reclassified from other comprehensive income Foreign currency translation Closing balance Deferred tax assets: Property and equipment $ 7,073 $ — $ (736 ) $ — $ — $ (745 ) $ 5,592 Net operating loss carry forward 1,287 — (430 ) — — (78 ) 779 Accruals deductible on actual payment 7,358 2,106 1,226 — 189 (1,054 ) 9,825 Share-based compensation expense 14,120 — 3,917 (807 ) — (1,129 ) 16,101 Minimum alternate tax 552 — 135 — — (58 ) 629 Others 482 — (295 ) — — (57 ) 130 Total deferred tax assets $ 30,872 $ 2,106 $ 3,817 $ (807 ) $ 189 $ (3,121 ) $ 33,056 Deferred tax liabilities: Intangible assets 12,183 — (753 ) — — 7 11,437 Unrealized gain/(loss) on cash flow hedging and investments 3,539 — (5 ) — (2,939 ) (243 ) 352 Others 2,084 — 488 — — (192 ) 2,380 Total deferred tax liabilities $ 17,806 $ — $ (270 ) $ — $ (2,939 ) $ (428 ) $ 14,169 Net deferred tax assets/(liabilities) $ 13,066 $ 2,106 $ 4,087 $ (807 ) $ 3,128 $ (2,693 ) $ 18,887 Deferred tax presented in the consolidated statement of financial position is as follows: As at March 31, 2022 March 31, 2021 Deferred tax assets 34,765 33,022 Deferred tax liabilities (9,290 ) (10,228 ) Net deferred tax assets $ 25,475 $ 22,794 There are unused tax losses amounting to $18,709 as at March 31, 2022 for which no deferred tax asset has been recognized as these losses relate to a tax jurisdiction where the group entity has had past losses and there is no conclusive evidence to support the view that sufficient taxable profit will be generated by such group entity in the future to offset such losses. The expiry dates of the tax benefit for these losses depend on the local tax laws of the jurisdiction and, if not utilized, would expire on various dates starting from financial year 2022 to 2027. However, in the US, Germany and New Zealand there is no expiry period for the unused tax losses. Deferred income tax liabilities on earnings of the Company’s subsidiaries have not been provided as such earnings are deemed to be permanently reinvested in the business and the Company is able to control the timing of the reversals of temporary differences associated with these investments. Accordingly, temporary difference on which deferred tax liability has not been recognized amounts to $984,475, $840,607 and $737,776 as at March 31, 2022, 2021 and 2020, respectively. From time to time, the Company receives orders of assessment from the Indian tax authorities assessing additional taxable income on the Company and/or its subsidiaries in connection with their review of their tax returns. The Company currently has orders of assessment outstanding for various years through fiscal 2018, which assess additional taxable income that could in the aggregate give rise to an estimated $24,718 (March 31, 2021: $27,590) in additional taxes, including interest of $6,214 (March 31, 2021: $9,450). These orders of assessment allege that the transfer prices the Company applied to certain of the international transactions between WNS Global and its other wholly-owned subsidiaries were not on arm’s length terms, disallow a tax holiday benefit claimed by the Company, deny the set off of brought forward business losses and unabsorbed depreciation and disallow certain expenses claimed as tax deductible by WNS Global. The Company has appealed against these orders of assessment before higher appellate authorities. In addition, the Company has orders of assessment pertaining to similar issues that have been decided in favor of the Company by appellate authorities, vacating the tax demands of $71,712 (March 31, 2021: $57,175) in additional taxes, including interest of $25,481 (March 31, 2021: $19,381). The income tax authorities have filed or may file appeals against these orders at higher appellate authorities. Uncertain tax positions are reflected at the amount likely to be paid to the taxation authorities. A liability is recognized in connection with each item that is not probable of being sustained on examination by taxing authority. The liability is measured using single best estimate of the most likely outcome for each position taken in the tax return. Thus, the provision would be the aggregate liability in connection with all uncertain tax positions. As of March 31, 2022, the Company has provided a tax reserve of $10,216 (March 31, 2021: $10,591) primarily on account of the Indian tax authorities’ denying the set off of brought forward business losses and unabsorbed depreciation. As at March 31, 2022, corporate tax returns for years ended March 31, 2019 and onward remain subject to examination by tax authorities in India. Based on the facts of these cases, the nature of the tax authorities’ disallowances and the orders from appellate authorities deciding similar issues in favor of the Company in respect of assessment orders for earlier fiscal years and after consultation with the Company’s external tax advisors, the Company believes these orders are unlikely to be sustained at the higher appellate authorities. The Company has deposited $11,849 (March 31, 2021: $12,534) of the disputed amounts with the tax authorities and may be required to deposit the remaining portion of the disputed amounts with the tax authorities pending final resolution of the respective matters. Others The Company received an assessment order from the Indian service tax authority, demanding payment of $1,965 towards service tax for the period April 1, 2014 to June 30, 2017. The tax authorities have rejected input service tax credit on certain types of input services. The Company has orders of assessment pertaining to similar issues for earlier fiscal years that have been decided in favor of the Company by appellate authorities. The Company intends to dispute the order of assessment.

Earnings per share

Earnings per share	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Earnings per share	26. Earnings per share The following table sets forth the computation of basic and diluted earnings per share: Year ended March 31, 2022 2021 2020 Numerator: Profit after tax $ 132,101 $ 102,617 $ 116,769 Denominator: Basic weighted average ordinary shares outstanding 48,891,004 49,765,672 49,726,636 Dilutive impact of equivalent share-based options and RSUs 2,357,573 2,343,077 2,310,304 Diluted weighted average ordinary shares outstanding 51,248,577 52,108,749 52,036,940 The computation of earnings per ordinary share (“EPS”) was determined by dividing profit by the weighted average ordinary shares outstanding during the respective periods. The Company excluded from the calculation of diluted EPS RSUs for the issuance of

Related party

Related party	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Related party	27. Related party The following is a list of the Company’s subsidiaries as at March 31, 2022: Direct subsidiaries Step subsidiaries Place of WNS Global Services Netherlands B.V. (1) The Netherlands WNS Global Services (Romania) S.R.L. Romania WNS North America Inc. Delaware, USA WNS Business Consulting Services Private Limited India WNS Global Services Inc. Delaware, USA WNS BPO Services Costa Rica, S.R.L. Costa Rica Denali Sourcing Services Inc. Delaware, USA - WNS Denali Sourcing Services Inc. (2) Delaware, USA WNS Assistance Limited (previously WNS Workflow Technologies Limited) United Kingdom WNS Assistance (Legal) Limited United Kingdom Accidents Happen Assistance Limited United Kingdom WNS Legal Assistance LLP United Kingdom WNS (Mauritius) Limited Mauritius WNS Capital Investment Limited Mauritius - WNS Customer Solutions (Singapore) Private Limited Singapore -WNS Global Services (Australia) Pty Ltd Australia - WNS New Zealand Limited New Zealand - Business Applications Associates Beijing Ltd China WNS Global Services Private Limited (3) India - WNS Global Services (UK) Limited (4) United Kingdom - WNS Global Services SA (Pty) Limited South Africa - WNS B-BBEE (5) South Africa - Ucademy (Pty) Limited South Africa - WNS South Africa (Pty) Limited (6) South Africa - MTS HealthHelp Inc. Delaware, USA - HealthHelp Holdings LLC Delaware, USA - HealthHelp LLC Delaware, USA - WNS-HealthHelp Philippines - Value Edge Inc. Delaware, USA - Value Edge AG. Switzerland -VE Value Edge GmbH Germany WNS Global Services (Private) Limited Sri Lanka WNS Global Services (Dalian) Co. Ltd. China WNS Global Services (UK) International Limited United Kingdom - WNS Global Services North Americas Inc. Delaware, USA - WNS Global Services AG (7) Switzerland - WNS Global Services Lisbon Unipessoal LDA (8) Portugal WNS Information Services (India) Private Limited (9) India WNS Business Consulting Netherlands B.V. (10) The Netherlands WNS Global Services Philippines Inc. The Philippines WNS Gestion des Processus d’Affaire Inc. (11) Canada Notes: (1) WNS Global Services Netherlands Cooperatief U.A. was converted into a BV entity with effect from January 9, 2020. As a consequence, the name of WNS Global Services Netherlands Cooperatief U.A. was changed to WNS Global Services Netherlands B.V. with effect from January 9, 2020. (2) WNS Denali Sourcing Services Inc., a wholly-owned subsidiary of Denali Sourcing Services Inc., was incorporated on November 27, 2019. (3) WNS Global Services Private Limited is held jointly by WNS (Mauritius) Limited, WNS Global Services Netherlands B.V. and WNS Customer Solutions (Singapore) Private Limited. The percentage of holding of WNS (Mauritius) Limited is 63.18%, of WNS Global Services Netherlands B.V. is 20.84%, and of WNS Customer Solutions (Singapore) Private Limited is 15.98%. (4) WNS Global Services (UK) Limited is jointly held by WNS Global Services Private Limited and WNS (Holdings) Limited. The percentage of holding of WNS Global Services Private Limited is 94.9% and of WNS (Holdings) Limited is 5.1%. (5) The WNS B-BBEE (6) WNS South Africa (Pty) Limited was incorporated as a subsidiary of WNS Global Services SA (Pty) Limited on December 19, 2018. The name of the entity was changed to WNS South Africa (Pty) Ltd with effect from September 25, 2019. (7) WNS Global Services AG, a wholly-owned subsidiary of WNS Global Services (UK) International Limited, was incorporated on July 16, 2021. (8) WNS Global Services Lisbon Unipessoal LDA, a wholly-owned subsidiary of WNS Global Services (UK) International Limited, was incorporated on August 13, 2021. (9) On August 1, 2021, the Company acquired all outstanding shares of MOL Information Processing Services (I) Private Limited. The name of the entity was changed to WNS Information Services (India) Private Limited with effect from December 1, 2021. (10) WNS Business Consulting Netherlands B.V., a wholly-owned subsidiary of WNS (Holdings) Limited, was incorporated on March 17, 2020 pursuant to the execution of deed of demerger on March 16, 2020. The shares of WNS Global Services Philippines Inc. were transferred from WNS Global Services Netherlands B.V. to WNS Business Consulting Netherlands B.V. pursuant to the proposal of demerger. (11) WNS Gestion des Processus d’Affaire Inc. was incorporated on April 28, 2020. Key management personnel Adrian T. Dillon (Ceased to be Chairman from September 20, 2021) Chairman Timothy L. Main (Appointed on September 21, 2021) Chairman Keshav R. Murugesh Director and Group Chief Executive Officer Renu S. Karnad (Ceased to be Director from February 14, 2020) Director Jason Liberty (Appointed on February 14, 2020) Director Swaminathan Rajamani Chief People Officer Gautam Barai Chief Operating Officer Sanjay Puria Group Chief Financial Officer Gareth Williams Director Michael Menezes Director John Freeland Director Françoise Gri Director Keith Haviland Director Mario P. Vitale Director Lan Tu (Appointed on February 4, 2022) Director Year ended March 31, Nature of transaction with related parties 2022 2021 2020 Key management personnel* Remuneration and short-term benefits 7,601 7,380 6,959 Defined contribution plan 124 105 114 Other benefits 114 47 54 Share-based compensation expense 15,264 14,830 17,167 * Defined benefit plan related costs are not disclosed as these are determined for the Company as a whole.

Operating segments

Operating segments	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Operating segments	28. Operating segments The Company has several operating segments based on a mix of industry and the types of services. The composition and organization of these operating segments currently is designed in such a way that the back office shared processes, i.e. the horizontal structure, delivers service to industry specific back office and front office processes i.e. the vertical structure. These structures represent a matrix form of organization structure, accordingly operating segments have been determined based on the core principle of segment reporting in accordance with IFRS 8 “Operating segments” The Company believes that the business process management services that it provides to customers in industries other than auto claims such as travel, shipping and logistics services; utilities, retail and consumer products group; banking and financial, healthcare and insurance; hi-tech and professional services; and others are similar in terms of services, service delivery methods, use of technology, and average long-term gross profit and hence meet the aggregation criteria in accordance with IFRS 8. WNS Assistance Limited and Accidents Happen Assistance Limited (which provide automobile repair through a network of third party repair centers), and WNS Assistance (Legal) Limited and WNS Legal Assistance LLP (which provide legal services in relation to personal injury claims), constitute WNS Auto Claims BPM, the performance of which is evaluated by the CODM separately. The WNS Auto Claims BPM segment does not meet the aggregation criteria. Accordingly, the Company has determined that it has two reportable segments, “WNS Global BPM” and “WNS Auto Claims BPM.” In order to provide accident management services, the Company arranges for the repair through a network of repair centers. Repair costs paid to automobile repair centers are invoiced to customers and recognized as revenue except in cases where the Company has concluded that it is not the principal in providing claims handling services and hence it would be appropriate to record revenue from repair services on a net basis, i.e. net of repair cost. The Company uses revenue less repair payments (non-GAAP) non-GAAP “Non-fault “Non-fault” The segment results for the year ended March 31, 2022 are as follows: Year ended March 31, 2022 WNS Global BPM WNS Auto Claims BPM Inter segments (1) Total Revenue from external customers $ 1,013,677 $ 96,123 $ — $ 1,109,800 Segment revenue $ 1,014,671 $ 96,123 $ (994 ) $ 1,109,800 Payments to repair centers — 82,954 — 82,954 Revenue less repair payments (non-GAAP) 1,014,671 13,169 (994 ) 1,026,846 Depreciation 49,277 726 — 50,003 Other costs 742,745 15,317 (994 ) 757,068 Segment operating profit/(loss) 222,649 (2,874 ) — 219,775 Other income, net (13,134 ) (733 ) — (13,867 ) Finance expense 13,323 64 — 13,387 Segment profit/(loss) before income taxes 222,460 (2,205 ) — 220,255 Income tax expense 32,703 (264 ) — 32,439 Segment profit/(loss) 189,757 (1,941 ) — 187,816 Amortization of intangible assets 11,550 Share-based compensation expense 44,165 Profit after tax $ 132,101 Addition to non-current (2) $ 39,094 $ 2,232 $ — $ 41,326 Total assets, net of elimination 1,044,865 119,627 — 1,164,492 Total liabilities, net of elimination $ 319,936 $ 90,553 $ — $ 410,489 (1) Transactions between inter segments represent business process management services rendered by WNS Global BPM to WNS Auto Claims BPM. (2) Addition to non-current right-of-use No client individually accounted for more than 10% of the total revenue during the year ended March 31, 2022. The segment results for the year ended March 31, 2021 are as follows: Year ended March 31, 2021 WNS Global BPM WNS Auto Claims BPM Inter segments (1) Total Revenue from external customers $ 858,023 $ 54,620 $ — $ 912,643 Segment revenue $ 858,368 $ 54,620 $ (345 ) $ 912,643 Payments to repair centers — 43,942 — 43,942 Revenue less repair payments (non-GAAP) 858,368 10,678 (345 ) 868,701 Depreciation 48,302 621 — 48,923 Other costs 620,487 12,630 (345 ) 632,772 Segment operating profit/(loss) 189,579 (2,573 ) — 187,006 Other income, net (11,847 ) (617 ) — (12,464 ) Finance expense 14,758 69 — 14,827 Segment profit/(loss) before income taxes 186,668 (2,025 ) — 184,643 Income tax expense 29,661 413 — 30,074 Segment profit/(loss) 157,007 (2,438 ) — 154,569 Amortization of intangible assets 13,722 Share-based compensation expense 38,230 Profit after tax $ 102,617 Addition to non-current (2) $ 46,806 $ 1,792 $ — $ 48,598 Total assets, net of elimination 979,281 126,867 — 1,106,148 Total liabilities, net of elimination $ 329,192 $ 92,864 $ — $ 422,056 (1) Transactions between inter segments represent business process management services rendered by WNS Global BPM to WNS Auto Claims BPM. (2) Addition to non-current right-of-use No client individually accounted for more than 10% of the total revenue during the year ended March 31, 2021. The segment results for the year ended March 31, 2020 are as follows: Year ended March 31, 2020 WNS Global BPM WNS Auto Claims BPM Inter segments (1) Total Revenue from external customers $ 881,840 $ 46,418 $ — $ 928,258 Segment revenue $ 882,016 $ 46,418 $ (176 ) $ 928,258 Payments to repair centers — 32,047 — 32,047 Revenue less repair payments (non-GAAP) 882,016 14,371 (176 ) 896,211 Depreciation 46,722 498 — 47,220 Other costs 630,375 14,946 (176 ) 645,145 Impairment of goodwill (Refer Note 9) — 4,085 — 4,085 Segment operating profit/(loss) 204,919 (5,158 ) — 199,761 Other income, net (13,298 ) (1,077 ) — (14,375 ) Finance expense 16,932 79 — 17,011 Segment profit/(loss) before income taxes 201,285 (4,160 ) — 197,125 Income tax expense 27,387 (204 ) — 27,183 Segment profit/(loss) 173,898 (3,956 ) — 169,942 Amortization of intangible assets 15,653 Share-based compensation expense 37,520 Profit after tax $ 116,769 Addition to non-current (2) $ 42,973 $ 1,760 $ — $ 44,733 Total assets, net of elimination 892,572 119,757 — 1,012,329 Total liabilities, net of elimination $ 339,660 $ 85,559 $ — $ 425,219 (1) Transactions between inter segments represent business process management services rendered by WNS Global BPM to WNS Auto Claims BPM. (2) Addition to non-current right-of-use No client individually accounted for more than 10% of the total revenue during the year ended March 31, 2020. External revenue Revenues from the geographic segments based on domicile of the customer. The Company’s external revenue by geographic area is as follows: Year ended March 31, 2022 2021 2020 Jersey, Channel Islands $ — $ — $ — North America (primarily the US) 504,260 403,527 392,601 UK 363,871 286,646 291,295 Australia 67,409 70,297 79,875 Europe (excluding the UK) 67,918 61,381 74,308 South Africa 22,270 26,450 35,429 Rest of the world 84,072 64,342 54,750 Total $ 1,109,800 $ 912,643 $ 928,258 The Company’s non-current right-of-use As at March 31, 2022 2021 Jersey, Channel Islands $ — $ — India 90,272 108,971 Philippines 59,030 58,149 South Africa 12,136 16,737 North America 14,707 16,601 UK 5,066 6,396 Rest of the world 10,669 12,184 Total $ 191,880 $ 219,038

Commitment and contingencies

Commitment and contingencies	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Commitment and contingencies	29. Commitment and contingencies Capital commitments As at March 31, 2022 and 2021, the Company had committed to spend approximately $9,522 and $7,027, respectively, under agreements to purchase property and equipment. These amounts are net of capital advances paid in respect of these purchases. Bank guarantees and others Certain subsidiaries of the Company hold bank guarantees aggregating $868 and $1,264 as at March 31, 2022 and March 31 2021, respectively. These guarantees have a remaining expiry term ranging from one Restricted time deposits placed with bankers as security for guarantees given by them to regulatory authorities and other third parties aggregating Contingencies In the ordinary course of business, the Company is involved in lawsuits, claims and administrative proceedings. While uncertainties are inherent in the final outcome of these matters, the Company believes, after consultation with counsel, that the disposition of these proceedings will not have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Additional capital disclosures

Additional capital disclosures	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Additional capital disclosures	30. Additional capital disclosures The key objective of the Company’s capital management is to ensure that it maintains a stable capital structure with the focus on total equity to uphold investor, creditor, and customer confidence and to ensure future development of its business. The Company focuses on keeping a strong total equity base to ensure independence, security, as well as a high financial flexibility for potential future borrowings, if required, without impacting the risk profile of the Company. The capital structure as at March 31, 2022 and 2021 was as follows: As at March 31, 2022 2021 % Change Total equity attributable to the equity shareholders of the Company $ 754,003 $ 684,092 10 % As percentage of total capital 100 % 98 % Long-term debt (1) — 16,800 (100 )% Total debt $ — $ 16,800 (100 )% As percentage of total capital — 2 % Total capital (debt and equity) $ 754,003 $ 700,892 8 % Note: (1) Before netting off debt issuance cost of Nil and $52 as at March 31, 2022 and March 31, 2021, respectively. The Company is fully equity-financed. This is also evident from the fact that debt represents only 0% and 2% of total capital as at March 31, 2022 and 2021, respectively.

Summary of significant accoun_2

Summary of significant accounting policies (Policies)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Basis of preparation	a. Basis of preparation These consolidated financial statements have been prepared in compliance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standard Board (“IASB”). These consolidated financial statements correspond to the classification provisions contained in IAS 1 (revised), “Presentation of Financial Statements.” Accounting policies applied are consistent with the policies that were applied for the preparation of the consolidated financial statements for the year ended March 31, 2021.
Basis of measurement	b. Basis of measurement These consolidated financial statements have been prepared on a historical cost convention and on an accrual basis, except for the following material items that have been measured at fair value as required by relevant IFRS: a. Derivative financial instruments; b. Share-based payment transactions; c. Marketable securities and investments in mutual funds; d. Investments in FMPs; and e. Contingent consideration.
Use of estimates and judgments	c. Use of estimates and judgments The preparation of financial statements in conformity with IFRS requires management to make judgments, estimates and assumptions that affect the application of accounting policies and the reported amount of assets, liabilities, income and expenses. Actual results may differ from those estimates. Estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates are recognized in the period in which the estimates are revised and in any future period affected. In particular, information about significant areas of estimation, uncertainty and critical judgments in applying accounting policies that have the most significant effect on the amount recognized in the consolidated financial statements is included in the following notes: i. Revenue recognition The Company’s determination of whether BPM services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. The Company provides automobile claims handling services, wherein the Company enters into contracts with its clients to process all their claims over the contract period and the fees are determined either on a per claim basis or as a fixed payment for the contract period. Where the contracts are on a per claim basis, the Company invoices the client at the inception of the claim process. The Company estimates the processing period for the claims and recognizes revenue over the estimated processing period. This processing period generally ranges between one to two months. The processing time may be greater for new clients and the estimated service period is adjusted accordingly. The processing period is estimated based on historical experience and other relevant factors, if any. ii. Current income taxes The major tax jurisdictions for the Company are India, the Philippines, South Africa, UK, and US, though the Company also files tax returns in other foreign jurisdictions. Significant judgments are involved in determining the provision for income taxes including judgment on whether tax positions are probable of being sustained in tax assessments. A tax assessment can involve complex issues, which can only be resolved over extended time periods. The recognition of taxes that are subject to certain legal or economic limits or uncertainties is assessed individually by management based on the specific facts and circumstances. iii. Deferred income taxes The assessment of the probability of future taxable profit in which deferred tax assets can be utilized is based on the Company’s latest approved budget forecast, which is adjusted for significant non-taxable iv. Impairment An impairment loss is recognized for the amount by which an asset’s or cash-generating unit’s carrying amount exceeds its recoverable amount. To determine the recoverable amount, management estimates expected future cash flows from each asset or cash-generating unit and determines a suitable interest rate in order to calculate the present value of those cash flows. In the process of measuring expected future cash flows management makes assumptions about future operating results. These assumptions relate to future events and circumstances. The actual results may vary, and may cause significant adjustments to the Company’s assets within the next financial year. The calculation of impairment loss involves significant estimates and assumptions which include revenue and earnings multiples, growth rates and net margins used to calculate projected future cash flows, risk-adjusted discount rate and future economic and market conditions. In most cases, determining the applicable discount rate involves estimating the appropriate adjustment to market risk and the appropriate adjustment to asset-specific risk factors. Estimation uncertainty relating to COVID-19 In evaluating the recoverability of trade receivables including unbilled revenue, contract assets, goodwill, long lived assets and investments, the Company has considered all internal and external information in the preparation of the consolidated financial statements including credit reports and economic outlook. The Company has performed sensitivity analysis on the assumptions used and based on current indicators of future economic conditions, the Company expects to recover the carrying amount of these assets. The impact of COVID-19 v. Valuation of derivative financial instruments Management uses valuation techniques in measuring the fair value of derivative financial instruments, where active market quotes are not available. In applying the valuation techniques, management makes maximum use of market inputs, and uses estimates and assumptions that are, as far as possible, consistent with observable data that market participants would use in pricing the instrument. Where applicable data is not observable, management uses its best estimate about the assumptions that market participants would make. These estimates may vary from the actual prices that would be achieved in an arm’s length transaction at the reporting date. vi. Accounting for defined benefit plans In accounting for pension and post-retirement benefits, several statistical and other factors that attempt to anticipate future events are used to calculate plan expenses and liabilities. These factors include expected return on plan assets, discount rate assumptions and rate of future compensation increases. To estimate these factors, actuarial consultants also use estimates such as withdrawal, turnover, and mortality rates which require significant judgment. The actuarial assumptions used by the Company may differ materially from actual results in future periods due to changing market and economic conditions, regulatory events, judicial rulings, higher or lower withdrawal rates, or longer or shorter participant life spans. vii. Share-based compensation expense The share-based compensation expense is determined based on the Company’s estimate of equity instruments that will eventually vest and valuation using the Monte-Carlo simulation and the binomial lattice model. viii. Business combinations Business combinations are accounted for using the acquisition method under the provisions of IFRS 3 (Revised) , “Business Combinations.” The cost of an acquisition is measured at the fair value of the assets transferred, equity instruments issued, and liabilities incurred at the date of acquisition. The cost of the acquisition also includes the fair value of any contingent consideration. Identifiable tangible and intangible assets acquired, and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair value on the date of acquisition. Significant estimates are required to be made in determining the value of contingent consideration and intangible assets. xi. Impairment of non-derivative The Company applies the forward-looking expected credit loss (“ECL”) model for recognizing impairment loss on financial assets that are measured at amortized cost or at fair value through other comprehensive income (“FVOCI”). The Company applies the simplified approach for determining the lifetime ECL allowance using the Company’s historical credit loss experience adjusted for factors that are specific to the debtor. For all other financial assets, the Company recognizes lifetime ECL when there has been a significant increase in credit risk since initial recognition. xii. Leases The Company determines the lease term as the non-cancellable lease-by-lease The Company has applied an incremental borrowing rate for the purpose of computing lease liabilities based on the rate prevailing in respective geographies.
Basis of consolidation	d. Basis of consolidation The Company consolidates entities over which it has control. Control exists when the Company has existing rights that give the Company the current ability to direct the activities which affect the entity’s returns; the Company is exposed to or has rights to returns which may vary depending on the entity’s performance; and the Company has the ability to use its power to affect its own returns from its involvement with the entity. Subsidiaries are consolidated from the date control commences until the date control ceases. i. Business combinations Business combinations are accounted for using the acquisition method under the provisions of IFRS 3 (Revised) , “Business Combinations.” The cost of an acquisition is measured at the fair value of the assets transferred, equity instruments issued and liabilities incurred at the date of acquisition. The consideration of the acquisition also includes the fair value of any contingent consideration. Identifiable tangible and intangible assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair value on the date of acquisition. Significant estimates are required to be made in determining the value of contingent consideration and intangible assets. Transaction costs that the Company incurs in connection with a business combination such as finders’ fees, legal fees, due diligence fees, and other professional and consulting fees are expensed as incurred. ii. Transactions eliminated on consolidation All inter-company and intra-company balances, transactions, income and expenses including unrealized income or expenses are eliminated on consolidation.
Functional and presentation currency	e. Functional and presentation currency The financial statements of each of the Company’s subsidiaries are presented using the currency of the primary economic environment in which these entities operate (i.e. the functional currency). The consolidated financial statements are presented in US dollars (“USD”) which is the presentation currency of the Company and has been rounded off to the nearest thousands.
Foreign currency transactions and translation	f. Foreign currency transactions and translation i. Transactions in foreign currency Transactions in foreign currency are translated into the functional currency using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation at the exchange rates prevailing at the reporting date of monetary assets and liabilities denominated in foreign currencies are recognized in the consolidated statement of income. Gains/losses relating to translation or settlement of trading activities are disclosed under foreign exchange gains/losses and translation or settlements of financing activities are disclosed under finance expenses. In the case of foreign exchange gains/losses on borrowings that are considered as a natural economic hedge for the foreign currency monetary assets, such foreign exchange gains/losses, net are presented within results from operating activities. ii. Foreign operations For the purpose of presenting consolidated financial statements, the assets and liabilities of the Company’s foreign operations that have local functional currency are translated into US dollars using exchange rates prevailing at the reporting date. Income and expense are translated at the monthly average exchange rate for the respective period. Exchange differences arising, if any, are recorded in equity as part of the Company’s other comprehensive income. Such exchange differences are recognized in the consolidated statement of income in the period in which such foreign operations are disposed. Goodwill and fair value adjustments arising on the acquisition of foreign operation are treated as assets and liabilities of the foreign operation and translated at the exchange rate prevailing at the reporting date. Foreign currency exchange differences arising from intercompany receivables or payables relating to foreign operations, the settlement of which is neither planned nor likely to occur in the foreseeable future, are considered to form part of net investment in foreign operation and are recognized in foreign currency translation reserve.
Financial instruments - initial recognition and subsequent measurement	g. Financial instruments — initial recognition and subsequent measurement Financial instruments are classified in the following categories: • Non-derivative • Non-derivative • Derivative financial instruments under the category of financial assets or financial liabilities at FVTPL or at FVOCI. The classification of financial instruments depends on the purpose for which those were acquired. Management determines the classification of the Company’s financial instruments at initial recognition. Non-derivative Subsequent to initial recognition, non-derivative i. Non-derivative a) Financial assets at amortized cost Financial assets that meet the following criteria are measured at amortized cost (except for investments that are designated at FVTPL on initial recognition): i) the asset is held within a business model whose objective is to hold assets in order to collect contractual cash flows; and ii) the contractual terms of the instrument give rise on specified dates to cash flows that are solely payment of principal and interest on the principal amount outstanding. Financial assets at amortized cost are presented as current assets, except for those maturing later than 12 months after the balance sheet date which are presented as non-current b) Financial assets at FVTPL Financial assets that do not meet the amortized cost or FVOCI criteria are measured at FVTPL. Financial assets at FVTPL are measured at fair value at the end of each reporting period, with any gains or losses arising on re-measurement Interest income on financial assets at FVTPL is recognized in the consolidated statement of income. Dividend on financial assets at FVTPL is recognized when the Company’s right to receive the dividend is established. ii. Non-derivative All financial liabilities are recognized initially at fair value, except in the case of loans and borrowings which are recognized at fair value, net of directly attributable transaction costs. The Company’s financial liabilities include trade and other payables, bank overdrafts, contingent consideration and loans and borrowings. Trade and other payables maturing later than 12 months after the reporting date are presented as non-current After initial recognition, interest bearing loans and borrowings are subsequently measured at amortized cost using the effective interest rate method. Gains and losses are recognized in the consolidated statement of income when the liabilities are derecognized as well as through the effective interest rate method amortization process. After initial recognition, contingent consideration is subsequently measured at fair value and the changes to the fair value are recognized in the consolidated statement of income. iii. Derivative financial instruments and hedge accounting The Company is exposed to foreign currency fluctuations on foreign currency assets, liabilities, net investment in foreign operations and forecasted cash flows denominated in foreign currency. The Company limits the effect of foreign exchange rate fluctuation by following established risk management policies including the use of derivatives. The Company enters into derivative financial instruments where the counterparty is primarily a bank. The Company holds derivative financial instruments such as foreign exchange forward and option contracts and interest rate swaps to hedge certain foreign currency and interest rate exposures. Cash flow hedges The Company recognizes derivative instruments as either assets or liabilities in the statement of financial position at fair value. Derivative instruments qualify for hedge accounting when the instrument is designated as a hedge; the hedged item is specifically identifiable and exposes the Company to risk; and it is expected that a change in fair value of the derivative instrument and an opposite change in the fair value of the hedged item will have a high degree of correlation. For derivative instruments where hedge accounting is applied, the Company records the effective portion of derivative instruments that are designated as cash flow hedges in other comprehensive income/(loss) in the statement of comprehensive income, which is reclassified into earnings in the same period during which the hedged item affects earnings. The remaining gain or loss on the derivative instrument in excess of the cumulative change in the present value of future cash flows of the hedged item, if any (i.e., the ineffective portion) or hedge components excluded from the assessment of effectiveness, and changes in fair value of other derivative instruments not designated as qualifying hedges is recorded as gains/losses, net in the consolidated statement of income. If the hedging instrument expires or is sold, terminated or exercised, the cumulative gain or loss on the hedging instrument recognized in the cash flow hedging reserve (in other comprehensive income/(loss)) until the period the hedge was effective remains in the cash flow hedging reserve until the forecasted transaction occurs. Cash flow hedge on interest rate swaps are recorded under finance expense, net. Cash flows from the derivative instruments are classified within cash flows from operating activities in the statement of cash flows. When it is highly probable that a forecasted transaction will not occur, the Company discontinues the hedge accounting and recognizes immediately, in the consolidated statement of income, the gains and losses attributable to such derivative instrument that were accumulated in other comprehensive income/(loss). Gains/(losses) on cash flow hedges on forecasted revenue transactions are recorded in foreign exchange gains/(losses) forming part of revenue. Changes in fair value of foreign currency derivative instruments not designated as cash flow hedges are recognized in the consolidated statement of income and reported within foreign exchange gains, net within results from operating activities. iv. Offsetting of financial instruments Financial assets and financial liabilities are offset against each other and the net amount reported in the consolidated statement of financial position if, and only if, there is a currently enforceable legal right to offset the recognized amounts and there is an intention to settle on a net basis, or to realize the assets and settle the liabilities simultaneously. v. Fair value of financial instruments The fair value of financial instruments that are traded in active markets at each reporting date is determined by reference to quoted market prices or dealer price quotations, without any deduction for transaction costs. For financial instruments not traded in an active market, the fair value is determined using appropriate valuation models. Where applicable, these models project future cash flows and discount the future amounts to a present value using market-based observable inputs including interest rate curves, credit risk, foreign exchange rates, and forward and spot prices for currencies. vi. Impairment of non-derivative The Company applies the forward-looking ECL model for recognizing impairment loss on financial assets that are measured at amortized cost or at FVOCI. Loss allowance for trade receivables and unbilled revenue with no significant financing component are measured at an amount equal to lifetime ECL. The Company applies the simplified approach for determining the lifetime ECL allowance using the Company’s historical credit loss experience adjusted for factors that are specific to the debtor. For all other financial assets, the Company recognizes lifetime ECL when there has been a significant increase in credit risk since initial recognition. However, if the credit risk on the financial instruments has not increased significantly since the initial recognition, the Company measures the loss allowance for that financial instrument equal to 12-month
Equity and share capital	h. Equity and share capital i. Share capital, share premium and treasury shares The Company has only one class of equity shares. Par value of the equity share is recorded as the share capital and the amount received in excess of par value is classified as share premium. The credit corresponding to the share-based compensation expense and excess tax benefit related to the exercise of share options and restricted share units is recorded in share premium. Treasury shares represent the consideration paid by the Company, including any directly attributable costs, to repurchase its own ordinary shares. Treasury shares are presented as a deduction from total equity. On cancellation of treasury shares, the amount paid is adjusted against share capital, to the extent of the par value of ordinary shares repurchased, and the balance is adjusted against share premium. ii. Retained earnings Retained earnings comprise the Company’s undistributed earnings after taxes. iii. Other components of equity Other components of equity consist of the following: Cash flow hedging reserve Changes in fair value of derivative hedging instruments designated and effective as a cash flow hedge are recognized net of taxes. Foreign currency translation reserve Foreign currency translation reserve consists of (i) the exchange difference arising from the translation of the financial statements of foreign subsidiaries and (ii) foreign currency differences arising from intercompany receivables or payables relating to foreign operations, the settlement of which is neither planned nor likely to occur in the foreseeable future, which are considered to form part of net investment in foreign operation. Other Reserves Other reserves include the Special Economic Zone Re-Investment Reserve created out of the profits of eligible Special Economic Zones (“SEZ”) units in terms of the provisions of the Indian Income-tax Act, 1961. Further, these provisions require the reserve to be utilized by the Company for acquiring new plant and machinery for the purpose of its business . Pension adjustments This reserve represents cumulative actuarial gain and losses recognized, net of taxes on defined benefits plans.
Cash and cash equivalents	i. Cash and cash equivalents The Company considers all highly liquid investments with an initial maturity of up to three months to be cash equivalents. Cash equivalents are readily convertible into known amounts of cash and subject to an insignificant risk of changes in value.
Investments	j. Investments i. Marketable securities and mutual funds The Company’s marketable securities represent liquid investments and are acquired principally for the purpose of earning daily income. Investments in mutual funds represent investments in mutual fund schemes wherein the mutual fund issuer has invested these funds in enterprise development funds. Investments which are expected to be redeemed after 12 months from the reporting date are classified as non-current These investments are designated at fair value through profit or loss and changes in fair value recognized in the consolidated statement of income. The fair value represents the original cost of the investment and the investment’s fair value at each reporting period. ii. Investments in fixed maturity plans The Company’s investments in FMPs represent investments in mutual fund schemes wherein the mutual fund issuer has invested these funds in certificates of deposits with banks in India. The investments in FMPs are designated as fair value through profit or loss and change in fair value is recognized in the consolidated statement of income. The fair value represents original cost of an investment and the investment’s fair value at each reporting period or net asset value as quoted. The Company manages FMPs on a fair value basis in accordance with the entity’s documented risk management, investment strategy and information provided to the key managerial personnel. The returns on the investment are measured based on the fair value movement rather than looking at the overall returns on the maturity. The Company’s investment purchase and sale decisions are also based on the fair value fluctuations rather than a predetermined policy to hold the investment until maturity. Key management personnel believe that recording these investments through the consolidated statement of income would provide more relevant information to measure the performance of the investment. iii. Investments in fixed deposits Investments in fixed deposits consist of term deposits with original maturities of more than three months with banks. These are designated as financial assets at amortized cost.
Funds held for clients	k. Funds held for clients Some of the Company’s agreements in the auto claims handling services allow the Company to temporarily hold funds on behalf of the client. The funds are segregated from the Company’s funds and there is usually a short period of time between when the Company receives these funds from the client and when the payments are made on their behalf.
Property and equipment	l. Property and equipment Property and equipment are stated at historical cost. Cost includes expenditures directly attributable to the acquisition of the asset. Depreciation and amortization is computed using the straight-line method over the estimated useful lives of the assets, which are as follows: Asset description Asset life (in years) Buildings 20 Computers and software 3-4 Furniture, fixtures and office equipment 2-5 Vehicles 3 Leasehold improvements Lesser of estimated useful life or lease term Assets acquired under finance leases are capitalized as assets by the Company at an amount equal to the fair value of the leased asset or, if lower, the present value of the minimum lease payments, each determined at the inception of the lease. Assets under finance leases and leasehold improvements are depreciated over the shorter of the lease term or the estimated useful life of the assets. Advances paid towards the acquisition of property and equipment and the cost of property and equipment not ready for use before the reporting date are disclosed as capital work-in-progress The Company assesses property and equipment for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset or group of assets may not be recoverable. If any such indication exists, the Company estimates the recoverable amount of the asset. The recoverable amount of an asset or cash generating unit is the higher of its fair value less cost of disposal (“FVLCOD”) and its value-in-use
Goodwill	m. Goodwill Goodwill represents the excess of the cost of an acquisition over the fair value of the Company’s share of the net identifiable assets of the acquired subsidiary at the date of acquisition. Goodwill is allocated to the cash-generating units expected to benefit from the synergies of the combination for the purpose of impairment testing. Goodwill is tested, at the cash-generating unit (or group of cash generating units) level, for impairment annually or if events or changes in circumstances indicate that the carrying amount may not be recoverable. Goodwill is carried at cost less accumulated impairment losses. Impairment loss on goodwill is not reversed. See further discussion on impairment testing under “Impairment of intangible assets and goodwill” below.
Intangible assets	n. Intangible assets Intangible assets are recognized only when it is probable that the expected future economic benefits attributable to the assets will accrue to the Company and the cost can be reliably measured. Intangible assets acquired in a business combination are recorded at fair value using generally accepted valuation methods appropriate for the type of intangible asset. Intangible assets with definite lives are amortized over the estimated useful lives and are reviewed for impairment, if indicators of impairment arise. Intangible assets with indefinite lives are not amortized but instead are tested for impairment at least annually and written down to the fair value. See further discussion on impairment testing under “Impairment of intangible assets and goodwill” below. Software development costs Costs incurred for developing software or enhancements to the existing software products to be sold and/or used for internal use are capitalized once the research phase is complete, technological feasibility and commercial feasibility has been established, future economic benefits are probable, the Company has an intention and ability to complete and use or sell the software and the costs can be measured reliably. Technological feasibility is established upon completion of a detailed design program or, in its absence, completion of a working model. Significant management judgments and estimates are required in the assessment of when technological feasibility is established, as well as in the ongoing assessment of the recoverability of capitalized costs. Costs that qualify as software development costs include external direct costs of materials and services utilized in developing or obtaining software and compensation and related benefits for employees who are directly associated with the software project. The capitalized costs are amortized on a straight-line basis over the estimated useful life. Costs associated with research phase activities, training, maintenance and all post-implementation stage activities are expensed as incurred. The Company’s definite lived intangible assets are amortized over the estimated useful life of the assets on a straight-line basis, as given below. Asset description Weighted average Customer contracts 46 Customer relationships 218 Covenant not-to-compete 48 Trade names 34 Technology 94 Intellectual Property and other rights 24 Software 50 Service mark Indefinite useful life
Impairment of intangible assets and goodwill	o. Impairment of intangible assets and goodwill Goodwill is not subject to amortization and tested at least annually for impairment or whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Intangible assets that are subject to amortization are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. An impairment loss is recognized for the amount by which the asset’s carrying amount exceeds its recoverable amount. The recoverable amount is the higher of an asset’s FVLCOD and VIU. For the purposes of assessing impairment, assets are grouped at the cash generating unit level which is the lowest level for which there are separately identifiable cash flows. Impairment losses recognized in respect of cash generating units are allocated first to reduce the carrying amount of any goodwill allocated to the cash generating units (or group of cash generating units) and then, to reduce the carrying amount of the other assets in the cash generating unit (or group of cash generating units) on a pro rata basis based on the carrying amount of each asset in the cash generating unit. Intangible assets except goodwill that suffered impairment are reviewed for possible reversal of the impairment at each reporting date.
Employee benefits	p. Employee benefits i. Defined contribution plans US savings plan Eligible employees of the Company in the US participate in a savings plan (“the Plan”) under Section 401(k) of the United States Internal Revenue Code (“the Code”). The Plan allows for employees to defer a portion of their annual earnings on a pre-tax UK pension scheme Eligible employees in the UK contribute to a defined contribution pension scheme operated in the UK. The assets of the scheme are held separately in an independently administered fund. The pension expense represents contributions payable to the fund maintained by the Company. Provident fund Eligible employees of the Company in India, the Philippines, South Africa, Sri Lanka and the UK participate in a defined contribution fund in accordance with the regulatory requirements in the respective jurisdictions. Both the employee and the Company contribute an equal amount to the fund which is equal to a specified percentage of the employee’s salary. The Company has no further obligation under defined contribution plans beyond the contributions made under these plans. Contributions are charged to profit or loss and are included in the consolidated statement of income in the year in which they accrue. ii. Defined benefit plan Employees in India, the Philippines and Sri Lanka are entitled to a defined benefit retirement plan covering eligible employees of the Company. The plan provides for a lump-sum 26 Gratuity liabilities are determined by actuarial valuation, performed by an independent actuary, at each reporting date using the projected unit credit method. The Company recognizes the net obligation of a defined benefit plan in its balance sheet as an asset or liability, as the case may be, in accordance with IAS 19 “Employee Benefits.” iii. Compensated absences The Company’s liability for compensated absences is determined on the basis of an actuarial valuation using the projected unit credit method and is charged to consolidated statement of income in the year in which they accrue.
Share-based payments	q. Share-based payments The Company accounts for share-based compensation expense relating to share-based payments using a fair value method in accordance with IFRS 2 “Share-based Payments.”
Provisions and accrued expenses	r. Provisions and accrued expenses A provision is recognized in the statement of financial position when the Company has a present legal or constructive obligation as a result of a past event, and it is probable that an outflow of economic benefits will be required to settle the obligation. If the effect is material, provisions are recognized at present value by discounting the expected future cash flows at a pre-tax Provisions for onerous contracts are recognized when the expected benefits to be derived by the Company from a contract are lower than the unavoidable costs of meeting the future obligations under the contract. The provision is measured at the present value of the lower of the expected cost of terminating the contract and the expected net cost of continuing with the contract. Before a provision is established, the Company recognizes any impairment loss on the assets associated with that contract.
Revenue recognition	s. Revenue recognition The Company derives revenue from BPM services, comprising back-office administration, data management, customer experience services management, and auto claims handling services. Revenue from rendering services is recognized on an accrual basis when the promised services are performed for an amount that reflects the consideration to which the Company expects to be entitled in exchange for those services. Revenue from the end of last billing to the reporting date is recognized as unbilled revenue. Unbilled revenue for certain contracts is classified as contract assets, as the right to consideration is conditional on factors other than the passage of time. Revenue is net of value-added taxes and includes reimbursements of out-of-pocket Revenue earned by back-office administration, data management and customer experience services management services Back-office administration, data management and customer experience services contracts are based on the following pricing models: a) per full-time-equivalent arrangements, which typically involve billings based on the number of full-time employees (or equivalent) deployed on the execution of the business process outsourced; b) per transaction arrangements, which typically involve billings based on the number of transactions processed (such as the number of e-mail c) subscription arrangements, which typically involve billings based on per member per month, based on contractually agreed rates; d) fixed-price arrangements, which typically involve billings based on achievements of pre-defined e) outcome-based arrangements, which typically involve billings based on the business result achieved by our clients through our service efforts (such as measured based on a reduction in days sales outstanding, improvement in working capital, increase in collections or a reduction in operating expenses); or f) other pricing arrangements, including cost-plus arrangements, which typically involve billing the contractually agreed direct and indirect costs and a fee based on the number of employees deployed under the arrangement. Revenues under time-and-material mark-up. Revenue for performance obligations that are satisfied over time is recognized in accordance with the methods prescribed for measuring the progress. The input method (cost or efforts expended) has been used to measure progress towards completion as there is a direct relationship between inputs and productivity. In respect of arrangements involving sub-contracting, “Revenue from Contract with Customers (“IFRS 15”) “Principal versus agent considerations.” Contracts with customers include variability in transaction price primarily due to service level agreements, gain share, minimum commitment and volume discounts. Revenues relating to such arrangements are accounted for as variable consideration when the amount of revenue to be recognized can be estimated to the extent that it is probable that a significant reversal of any incremental revenue will not occur. Amounts billed or payments received, where revenue recognition criteria have not been met, are recorded as deferred revenue and classified as contract liabilities. These are recognized as revenue when all the recognition criteria have been met. The costs related to the performance of BPM services unrelated to transition services (discussed below) are fulfilment costs classified as contract assets and recognized in the consolidated statement of income when the conditions for revenue recognition have been met. Any upfront payment received towards future services is classified as a contract liability and is recognized in the consolidated statement of income over the period when such services are provided. All incremental and direct costs incurred for acquiring contracts, such as certain sales commission, are classified as contract assets. Such costs are amortized over the expected life of the contract. Other upfront fees paid to customers are classified as contract assets. Such costs are amortized over the life of the contract and recorded as an adjustment to the transaction price and reduced from revenue. For certain BPM customers, the Company performs transition activities at the outset of entering into a new contract. The Company has determined these transition activities do not meet the criteria of IFRS 15 to be accounted for as a separate performance obligation and has deferred revenue attributable to these activities. Accordingly, transition revenues are classified as contract liabilities and are subsequently recognized ratably over the period in which the BPM services are performed. Costs related to such transition services are fulfillment costs which are directly related to the contract and result in generation or enhancement of resources and are expected to be recoverable under the contract and thereby classified as contract assets and are recognized ratably over the estimated life of the contract. All contracts entered into by the Company specify the payment terms. Usual payment terms range between 30 60 Revenue earned by auto claims handling services Auto claims handling services include claims handling and administration (“Claims Handling”), car hire and arranging for repairs with repair centers across the UK and the related payment processing for such repairs (“Accident Management”). With respect to Claims Handling, the Company receives either a per-claim In order to provide Accident Management services, the Company arranges for the repair through a network of repair centers. The repair costs are invoiced to customers. In determining whether the receipt from the customers related to payments to repair centers should be recognized as revenue, the Company considers the criteria established by IFRS 15 under the application guidance in paragraphs B34 to B38 “Principal versus agent considerations.” a) the Company has the primary responsibility for providing the services, b) the Company negotiates labor rates with repair centers, and c) the Company is responsible for timely and satisfactory completion of repairs. If there are circumstances where the above criteria are not met and therefore the Company is not the principal in providing Accident Management services, amounts received from customers are recognized and presented net of payments to repair centers in the consolidated statement of income. Revenue from Accident Management services is recorded net of the repairer referral fees passed on to customers. Revenue from legal services in the Auto Claims BPM segment is recognized on the admission of liability by the third party to the extent of fixed fees earned at each stage and any further income on the successful settlement of the claim. Incremental and direct costs incurred to contract with a claimant are classified as contract assets and amortized over the expected period of benefit, not exceeding 15 months. All other costs to the Company are expensed as incurred.
Leases	t. Leases The Company leases most of its delivery centers and office facilities under operating lease agreements that are renewable on a periodic basis at the option of the lessor and the lessee. The lease agreements contain rent free periods and rent escalation clauses. The Company assesses whether a contract contains a lease at the inception of the contract. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. To assess whether a contract conveys the right to control the use of an identified asset, the company assesses whether: (i) the contract involves the use of an identified asset, (ii) the company has substantially all of the economic benefits from the use of the asset through the period of the lease, and (iii) the company has the right to direct the use of the asset. At the date of commencement of the lease, the Company recognizes a ROU asset and a corresponding lease liability for all lease arrangements under which it is a lessee, except for short-term leases and low value leases. ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. For short-term leases and low value leases, the Company recognizes the lease payments as an expense on a straight-line basis over the term of the lease. The lease arrangements include options to extend or terminate the lease before the end of the lease term. ROU assets and lease liabilities include these options when it is reasonably certain that they will be exercised. The ROU assets are initially recognized at cost, which comprises the initial amount of the lease liability adjusted for any lease payments made at or prior to the commencement date of the lease plus any initial direct costs less any lease incentives. They are subsequently measured at cost less accumulated depreciation and impairment losses. ROU assets are depreciated from the date of commencement of the lease on a straight-line basis over the shorter of the lease term and the useful life of the underlying asset. The lease liability is initially measured at amortized cost at the present value of the future lease payments. For leases under which the rate implicit in the lease is not readily determinable, the Company uses its incremental borrowing rate based on the information available at the date of commencement of the lease in determining the present value of lease payments. Lease liabilities are remeasured with a corresponding adjustment to the related ROU asset if the Company changes its assessment as to whether it will exercise an extension or a termination option. The Company accounts for a modification of a lease contract as a separate contract for an additional right of use not included in the original lease and the increase in lease payment is commensurate with the standalone price for the additional right of use, adjusted for the circumstances of the particular contract. Modifications which are not accounted for as a separate contract are reassessed as at the effective date of the modifications based on the modified terms and conditions and the facts and circumstances as at that date. Upon modification, the Company remeasures the lease liability to reflect changes to the remaining lease payments and discount rates and recognizes the amount of the remeasurement of the lease liability as an adjustment to the ROU assets. However, if the carrying amount of the ROU assets is reduced to zero as a result of modification, any remaining amount of the remeasurement is recognized as an expense in consolidated statement of income. The Company has applied practical expedient under an amendment to IFRS 16 for COVID-19 covid-19 In the case of sub-leases, sub-lease right-of-use sub-lease sub-lease sub-lease sub-lease.
Finance expense	u. Finance expense Finance expense comprises interest cost on borrowings, transaction costs, interest expense on lease liabilities and the gains/losses on settlement of related derivative instruments. The foreign exchange gains/losses on borrowings are considered as a natural economic hedge for the foreign currency monetary assets which are classified as foreign exchange gains/losses, net within results from operating activities. Borrowing costs are recognized in the consolidated statement of income using the effective interest method.
Income taxes	v. Income taxes Income tax comprises current and deferred tax. Income tax expense is recognized in the consolidated statement of income except to the extent it relates to items directly recognized in equity, in which case it is recognized in equity. i. Current income tax Current income tax for the current and prior periods are measured at the amount expected to be recovered from or paid to the taxation authorities based on the taxable profit for the period. The tax rates and tax laws used to compute the amount are those that are enacted by the reporting date and applicable for the period. The Company offsets current tax assets and current tax liabilities where it has a legally enforceable right to set off the recognized amounts and where it intends either to settle on a net basis, or to realize the asset and liability simultaneously. Significant judgments are involved in determining the provision for income taxes including judgment on whether tax positions are probable of being sustained in tax assessments. A tax assessment can involve complex issues, which can only be resolved over extended time periods. The recognition of taxes that are subject to certain legal or economic limits or uncertainties is assessed individually by management based on the specific facts and circumstances. Though the Company has considered all these issues in estimating its income taxes, there could be an unfavorable resolution of such issues that may affect results of the Company’s operations. ii. Deferred income tax Deferred income tax is recognized using the balance sheet approach. Deferred income tax assets and liabilities are recognized for all deductible and taxable temporary differences arising between the tax bases of assets and liabilities and their carrying amount in financial statements, except when the deferred income tax arises from the initial recognition of goodwill or an asset or liability in a transaction that is not a business combination and affects neither accounting nor taxable profits or loss at the time of transaction. Deferred income tax assets and liabilities are measured at the tax rates that are expected to apply in the period when the asset is realized or the liability is settled, based on tax rates (and tax laws) that have been enacted or substantively enacted at the reporting date. Deferred income tax asset in respect of carry forward of unused tax credits and unused tax losses are recognized to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, and the carry forward of unused tax credits and unused tax losses can be utilized. The carrying amount of deferred income tax assets is reviewed at each reporting date and reduced to the extent that it is no longer probable that sufficient taxable profit will be available to allow all or part of the deferred income tax asset to be utilized. The Company recognizes deferred tax liabilities for all taxable temporary differences except those associated with the investments in subsidiaries where the timing of the reversal of the temporary difference can be controlled and it is probable that the temporary difference will not reverse in the foreseeable future.
Earnings per share	w. Earnings per share Basic earnings per share are computed using the weighted-average number of ordinary shares outstanding during the period. Diluted earnings per share is computed by considering the impact of the potential issuance of ordinary shares, using the treasury stock method, on the weighted average number of shares outstanding during the period, except where the results would be anti-dilutive.
Government grants	x. Government grants The Company recognizes government grants only when there is reasonable assurance that the conditions attached to them shall be complied with, and the grants will be received. Government grants related to depreciable assets are treated as deferred income and are recognized in the consolidated statement of income on a systematic and rational basis over the useful life of the asset. Government grants related to revenue are recognized on a systematic basis in the consolidated statement of income, generally over the periods necessary to match them with the related costs that they are intended to compensate.

Summary of significant accoun_3

Summary of significant accounting policies (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Estimated Useful Lives of Property and Equipment	Depreciation and amortization is computed using the straight-line method over the estimated useful lives of the assets, which are as follows: Asset description Asset life (in years) Buildings 20 Computers and software 3-4 Furniture, fixtures and office equipment 2-5 Vehicles 3 Leasehold improvements Lesser of estimated useful life or lease term
Estimated Useful Life of Intangible Assets	The Company’s definite lived intangible assets are amortized over the estimated useful life of the assets on a straight-line basis, as given below. Asset description Weighted average Customer contracts 46 Customer relationships 218 Covenant not-to-compete 48 Trade names 34 Technology 94 Intellectual Property and other rights 24 Software 50 Service mark Indefinite useful life

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Mar. 31, 2022
MOL Information Processing Services (I) Private Limited [Member]
Statement [LineItems]
Purchase Price Allocation to Assets Acquired and Liabilities Assumed	The purchase price has been allocated on a provisional basis, as set out below, to the assets acquired and liabilities assumed in the business combination. Amount Total assets $ 3,981 Less: Total liabilities (2,321 ) Net assets acquired 1,660 Less: Purchase consideration (2,958 ) Goodwill on acquisition $ 1,298

Cash and cash equivalents (Tabl

Cash and cash equivalents (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Cash and Cash Equivalents	The Company considers all highly liquid investments with an initial maturity of up to three months to be cash equivalents. Cash and cash equivalents consist of the following: As at March 31, March 31, 2022 2021 Cash and bank balances $ 78,578 $ 73,398 Short-term deposits with banks* 29,575 32,235 Total $ 108,153 $ 105,633

Investments (Tables)

Investments (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Investments	Investments consist of the following: As at March 31, March 31, 2022 2021 Investments in marketable securities and mutual funds $ 263,013 $ 250,852 Investment in fixed deposits 41,827 38,699 Total $ 304,840 $ 289,551 As at March 31, 2022 March 31, 2021 Current investments $ 211,398 $ 203,676 Non-current 93,442 85,875 Total $ 304,840 $ 289,551

Trade receivables and unbille_2

Trade receivables and unbilled revenue, net (Tables)	12 Months Ended
	Mar. 31, 2022
Trade receivables and unbilled revenue [member]
Statement [LineItems]
Summary of Trade Receivables and Unbilled Revenue	Trade receivables and unbilled revenue consist of the following: As at March 31, March 31, 2022 2021 Trade receivables and unbilled revenue* $ 189,952 $ 152,414 Less: Allowances for ECL (2,398 ) (2,624 ) Total $ 187,554 $ 149,790 Non-current $ — $ 269 Current trade receivables and unbilled revenue* $ 187,554 $ 149,521
Trade receivables [member]
Statement [LineItems]
Movement in Allowances for Expected Credit Losses	The movement in the ECL is as follows: Year ended March 31, 2022 2021 2020 Balance at the beginning of the year $ 2,624 $ 1,590 $ 1,182 Charged to consolidated statement of income 1,504 1,971 1,316 Write-offs, net of collections (1,308 ) (589 ) (299 ) Reversals (397 ) (637 ) (533 ) Translation adjustment (25 ) 289 (76 ) Balance at the end of the year $ 2,398 $ 2,624 $ 1,590

Prepayments and other assets (T

Prepayments and other assets (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Prepayment and Other Assets	Prepayment and other assets consist of the following: As at March 31, 2022 March 31, 2021 Current: Service tax and other tax receivables $ 8,833 $ 5,997 Employee receivables 1,045 1,044 Advances to suppliers 2,987 2,667 Prepaid expenses 10,169 9,261 Other assets 5,788 4,242 Total $ 28,822 $ 23,211 Non-current: Deposits $ 11,263 $ 10,508 Income tax assets 15,068 12,151 Service tax and other tax receivables 13,079 12,786 Other assets 4,865 4,587 Total $ 44,275 $ 40,032

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of the Carrying Value of Goodwill	A summary of the carrying value of goodwill is as follows: As at March 31, March 31, Gross carrying amount $ 150,684 $ 152,459 Accumulated impairment of goodwill (27,147 ) (28,480 ) Total $ 123,537 $ 123,979
Summary of Movement in Goodwill by Reportable Segment	The movement in goodwill balance by reportable segment as at March 31, 2022 and 2021 is as follows: Gross carrying amount WNS WNS Auto Global BPM Claims BPM Total Balance as at April 1, 2020 $ 121,304 $ 25,520 $ 146,824 Translation adjustment 2,675 2,960 5,635 Balance as at March 31, 2021 $ 123,979 $ 28,480 $ 152,459 Goodwill arising on acquisitions (Refer Note 4(a),4(b)) 1,312 — 1,312 Translation adjustment (1,754 ) (1,333 ) (3,087 ) Balance as at March 31, 2022 $ 123,537 $ 27,147 $ 150,684 Accumulated impairment losses WNS WNS Auto Global BPM Claims BPM Total Balance as at April 1, 2020 $ — $ 25,520 $ 25,520 Impairment of goodwill recognized during the year — — — Translation adjustment — 2,960 2,960 Balance as at March 31, 2021 $ — $ 28,480 $ 28,480 Impairment of goodwill recognized during the year — — — Translation adjustment — (1,333 ) (1,333 ) Balance as at March 31, 2022 $ — $ 27,147 $ 27,147
Carrying Value of Goodwill Allocated to Cash Generating Units	The carrying value of goodwill allocated to the cash generating units (“CGU”) is as follows: As at March 31, March 31, 2022 2021 Research and Analytics $ 42,051 $ 43,594 HealthHelp 39,082 39,082 Denali 29,542 29,542 WNS Global BPM* 4,934 3,717 South Africa 4,522 4,471 Technology services 3,406 3,573 $ 123,537 $ 123,979 * Excludes South Africa, Research and Analytics, Technology services, Denali and HealthHelp goodwill.
Key Assumptions Used in Performing Impairment Test, by each CGU	The key assumptions used in performing the impairment test, by each CGU, were as follows: CGU’s – As at March 31, 2022 WNS Global BPM* South Africa Denali Research and HealthHelp Technology services Discount rate 14.9 % 15.5 % 11.7 % 14.9 % 11.7 % 13.0 % Perpetual growth rate 3.0 % 3.0 % 2.5 % 3.0 % 2.5 % 2.0 % CGU’s – As at March 31, 2021 WNS Global BPM* South Africa Denali Research and HealthHelp Technology services Discount rate 15.3 % 16.2 % 12.0 % 15.3 % 12.0 % 14.0 % Perpetual growth rate 3.0 % 3.0 % 2.5 % 3.0 % 2.5 % 2.0 %

Intangible assets (Tables)

Intangible assets (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Change in Carrying Value of Intangible Assets	The changes in the carrying value of intangible assets for the year ended March 31, 2022 are as follows: Gross carrying value Customer Contracts Customer Relationships Intellectual Property and Other rights Trade names Technology Leasehold Benefits Covenant not-to- compete Service mark Software Total Balance as at April 1, 2021 $ 158,014 $ 121,622 $ 4,511 $ 641 $ 5,987 $ 1,835 $ 9,161 $ 400 $ 53,152 $ 355,323 Additions — — — — — — — — 12,246 12,246 On acquisitions (Refer Note 4(a), 4(b)) 536 — — — — — — — 146 682 Translation adjustments (2,387 ) (570 ) (199 ) (3 ) (40 ) — (96 ) — (2,325 ) (5,620 ) Balance as at March 31, 2022 $ 156,163 $ 121,052 $ 4,312 $ 638 $ 5,947 $ 1,835 $ 9,065 $ 400 $ 63,219 $ 362,631 Accumulated amortization Balance as at April 1, 2021 $ 158,014 $ 76,739 $ 4,511 $ 641 $ 3,230 $ 1,835 $ 9,161 $ — $ 36,051 $ 290,182 Amortization 133 3,645 — — 766 — — — 7,006 11,550 Translation adjustments (2,377 ) (554 ) (199 ) (3 ) (31 ) — (96 ) — (1,262 ) (4,522 ) Balance as at March 31, 2022 $ 155,770 $ 79,830 $ 4,312 $ 638 $ 3,965 $ 1,835 $ 9,065 $ — $ 41,795 $ 297,210 Net carrying value as at March 31, 2022 $ 393 $ 41,222 $ — $ — $ 1,982 $ — $ — $ 400 $ 21,424 $ 65,421 The changes in the carrying value of intangible assets for the year ended March 31, 2021 are as follows: Gross carrying value Customer Contracts Customer Relationships Intellectual Property and Other rights Trade names Technology Leasehold Benefits Covenant not-to- compete Service mark Software Total Balance as at April 1, 2020 $ 155,214 $ 120,427 $ 4,068 $ 638 $ 5,950 $ 1,835 $ 9,060 $ 400 $ 43,615 $ 341,207 Additions — — — — — — — — 7,544 7,544 Translation adjustments 2,800 1,195 443 3 37 — 101 — 1,993 6,572 Balance as at March 31, 2021 $ 158,014 $ 121,622 $ 4,511 $ 641 $ 5,987 $ 1,835 $ 9,161 $ 400 $ 53,152 $ 355,323 Accumulated amortization Balance as at April 1, 2020 $ 154,093 $ 71,965 $ 4,068 $ 638 $ 2,440 $ 1,835 $ 7,474 $ — $ 28,594 $ 271,107 Amortization 1,123 3,631 — — 765 — 1,587 — 6,616 13,722 Translation adjustments 2,798 1,143 443 3 25 — 100 — 841 5,353 Balance as at March 31, 2021 $ 158,014 $ 76,739 $ 4,511 $ 641 $ 3,230 $ 1,835 $ 9,161 $ — $ 36,051 $ 290,182 Net carrying value as at March 31, 2021 $ — $ 44,883 $ — $ — $ 2,757 $ — $ — $ 400 $ 17,101 $ 65,141
Estimated Remaining Weighted Average Amortization Periods for Definite Lived Intangible Assets	As at March 31, 2022, the estimated remaining weighted average amortization periods for definite lived intangible assets are as follows: Balance life (in months) Customer relationships 167 Customer contracts 9 Technology 34 Software 16
Estimated Annual Amortization Expense	The estimated annual amortization expense based on remaining weighted average amortization periods for intangible assets and exchange rates, each as at March 31, 2022 are as follows: Amount 2023 $ 13,207 2024 11,319 2025 8,102 2026 4,431 2027 3,272 Thereafter 24,690 $ 65,021 * * Excludes service mark, as it has an indefinite useful life.

Property and equipment (Tables)

Property and equipment (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Changes in Carrying Value of Property and Equipment	The changes in the carrying value of property and equipment for the year ended March 31, 2022 are as follows: Gross carrying value Building Computers and software Furniture, Vehicles Leasehold improvements Total Balance as at April 1, 2021 $ 9,733 $ 78,850 $ 84,335 $ 876 $ 76,043 $ 249,837 Additions — 13,966 2,449 — 2,348 18,763 On acquisitions (Refer Note 4(a), 4(b)) — 217 102 10 116 445 Disposals/retirements — (1,901 ) (1,016 ) (74 ) (2,765 ) (5,756 ) Translation adjustments (142 ) (3,558 ) (3,228 ) (28 ) (3,038 ) (9,994 ) Balance as at March 31, 2022 $ 9,591 $ 87,574 $ 82,642 $ 784 $ 72,704 $ 253,295 Accumulated depreciation Balance as at April 1, 2021 $ 5,945 $ 65,421 $ 68,141 $ 737 $ 58,568 $ 198,812 Depreciation 483 8,771 6,412 120 6,004 21,790 Disposals/retirements — (1,864 ) (988 ) (70 ) (2,727 ) (5,649 ) Translation adjustments (90 ) (2,754 ) (2,599 ) (23 ) (2,376 ) (7,842 ) Balance as at March 31, 2022 $ 6,338 $ 69,574 $ 70,966 $ 764 $ 59,469 $ 207,111 Capital work-in-progress 3,073 Net carrying value as at March 31, 2022 $ 49,257 The changes in the carrying value of property and equipment for the year ended March 31, 2021 are as follows: Gross carrying value Building Computers and software Furniture, Vehicles Leasehold improvements Total Balance as at April 1, 2020 $ 9,602 $ 74,388 $ 78,403 $ 838 $ 70,928 $ 234,159 Additions — 9,618 4,096 — 2,591 16,305 Disposals/retirements — (9,044 ) (1,988 ) — (1,293 ) (12,325 ) Translation adjustments 131 3,888 3,824 38 3,817 11,698 Balance as at March 31, 2021 $ 9,733 $ 78,850 $ 84,335 $ 876 $ 76,043 $ 249,837 Accumulated depreciation Balance as at April 1, 2020 $ 5,385 $ 63,896 $ 60,044 $ 514 $ 50,287 $ 180,126 Depreciation 484 7,203 6,995 193 6,605 21,480 Disposals/retirements — (9,003 ) (1,855 ) — (1,038 ) (11,896 ) Translation adjustments 76 3,325 2,957 30 2,714 9,102 Balance as at March 31, 2021 $ 5,945 $ 65,421 $ 68,141 $ 737 $ 58,568 $ 198,812 Capital work-in-progress 1,247 Net carrying value as at March 31, 2021 $ 52,272

Leases (Tables)

Leases (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Right Use Assets	The changes in the carrying value of ROU assets for the year ended March 31, 2022 are as follows: Gross carrying value Premises Computers Equipment Motor Total Balance as at April 1, 2021 $ 219,078 $ 39 $ 25 $ 639 $ 219,781 Additions 5,620 — — 216 5,836 On acquisition (Refer Note 4(b)) 1,528 — — — 1,528 Terminations/modifications 3,174 — — — 3,174 Translation adjustments (9,215 ) 1 (1 ) (42 ) (9,257 ) Balance as at March 31, 2022 $ 220,185 $ 40 $ 24 $ 813 $ 221,062 Accumulated depreciation Balance as at April 1, 2021 $ 52,497 $ 35 $ 17 $ 466 $ 53,015 Depreciation 28,100 4 3 106 28,213 Terminations/modifications (47 ) — — — (47 ) Translation adjustments (2,716 ) 1 (1 ) (26 ) (2,742 ) Balance as at March 31, 2022 $ 77,834 $ 40 $ 19 $ 546 $ 78,439 Net carrying value as at March 31, 2022 $ 142,351 $ — $ 5 $ 267 $ 142,623 The changes in the carrying value of ROU assets for the year ended March 31, 2021 are as follows: Gross carrying value Premises Computers Equipment Motor Total Balance as at April 1, 2020 $ 183,839 $ 34 $ 32 $ 515 $ 184,420 Additions 26,336 — — 118 26,454 Terminations/modifications (985 ) — (8 ) (22 ) (1,015 ) Translation adjustments 9,888 5 1 28 9,922 Balance as at March 31, 2021 $ 219,078 $ 39 $ 25 $ 639 $ 219,781 Accumulated depreciation Balance as at April 1, 2020 $ 25,015 $ 16 $ 12 $ 279 $ 25,322 Depreciation 27,236 16 10 181 27,443 Terminations/modifications (1,503 ) — (5 ) (9 ) (1,517 ) Translation adjustments 1,749 3 — 15 1,767 Balance as at March 31, 2021 $ 52,497 $ 35 $ 17 $ 466 $ 53,015 Net carrying value as at March 31, 2021 $ 166,581 $ 4 $ 8 $ 173 $ 166,766
Summary of Movement in Lease Liabilities	The movement in lease liabilities for the year ended March 31, 2022 and 2021 is as follows: Lease liabilities March 31, March 31, Opening balance $ 191,907 $ 178,892 Cash outflows Principal payment of lease liabilities (26,235 ) (23,073 ) Interest payment on lease liabilities (12,826 ) (13,442 ) Non-cash On acquisition (Refer Note 4(b)) 1,521 — Additions 5,403 25,506 Terminations/modifications 2,282 1,313 Interest accrued 12,657 13,689 Rent concessions (21 ) (416 ) Translation adjustments (7,694 ) 9,438 Closing balance $ 166,994 $ 191,907
Summary of Contractual Maturities of Lease Liabilities	The table below provides details regarding the contractual maturities of lease liabilities as at March 31, 2022, on an undiscounted basis: As at Tenure March 31, March 31, Less than 1 year $ 37,330 $ 39,591 1-3 67,177 73,833 3-5 49,449 63,462 More than 5 years 62,234 79,419 Total $ 216,190 $ 256,305

Loans and borrowings (Tables)

Loans and borrowings (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Long-term Loans and Borrowings	The long-term loans and borrowings consist of th e following: Final As at Currency Interest rate March 31, 2022 March 31, 2021 US dollars 3M USD LIBOR+0.95 % 2022 — 16,800 Total — 16,800 Less: Debt issuance cost — (52 ) Total — 16,748 Current portion of long-term debt $ — $ 16,748 Long-term debt $ — $ —

Financial instruments (Tables)

Financial instruments (Tables)	12 Months Ended
	Mar. 31, 2022
Statement [LineItems]
Carrying Value and Fair Value of Financial Instruments by Class	The carrying value and fair value of financial instruments by class as at March 31, 2022 are as follows: Financial assets Financial Financial Financial Total carrying value Total fair value Cash and cash equivalents $ 108,153 $ — $ — $ 108,153 $ 108,153 Investment in fixed deposits 41,827 — — 41,827 41,827 Investments in marketable securities and mutual funds — 263,013 — 263,013 263,013 Trade receivables 100,522 — — 100,522 100,522 Unbilled revenue (1) 86,786 — — 86,786 86,786 Funds held for clients 11,643 — — 11,643 11,643 Prepayments and other assets (2) 6,283 — — 6,283 6,283 Other non-current (3) 13,509 — — 13,509 13,509 Derivative assets — 556 13,044 13,600 13,600 Total carrying value $ 368,723 $ 263,569 $ 13,044 $ 645,336 $ 645,336 Financial liabilities Financial Financial Financial Total carrying value Total fair Value Trade payables $ 27,829 $ — $ — $ 27,829 $ 27,829 Other employee obligations (4) 95,098 — — 95,098 95,098 Provisions and accrued expenses 36,752 — — 36,752 36,752 Lease liabilities 166,994 — — 166,994 166,994 Other liabilities (5) 2,015 — — 2,015 2,015 Derivative liabilities — 2,295 4,578 6,873 6,873 Total carrying value $ 328,688 $ 2,295 $ 4,578 $ 335,561 $ 335,561 Notes: (1) Excluding non-financial (2) Excluding non-financial (3) Excluding non-financial (4) Excluding non-financial (5) Excluding non-financial The carrying value and fair value of financial instruments by class as at March 31, 2021 are as follows: Financial assets Financial Financial Financial Total carrying value Total fair value Cash and cash equivalents $ 105,633 $ — $ — $ 105,633 $ 105,633 Investment in fixed deposits 38,699 — — 38,699 38,699 Investments in marketable securities and mutual funds — 250,852 — 250,852 250,852 Trade receivables 83,387 — — 83,387 83,387 Unbilled revenue (1) 66,212 — — 66,212 66,212 Funds held for clients 12,139 — — 12,139 12,139 Prepayments and other assets (2) 4,757 — — 4,757 4,757 Other non-current (3) 13,790 — — 13,790 13,790 Derivative assets — 2,619 7,104 9,723 9,723 Total carrying value $ 324,617 $ 253,471 $ 7,104 $ 585,192 $ 585,192 Financial liabilities Financial Financial Financial Total carrying value Total fair Value Trade payables $ 28,015 $ — $ — $ 28,015 $ 28,015 Long-term debt (includes current portion) (4) 16,800 — — 16,800 16,800 Other employee obligations (5) 74,511 — — 74,511 74,511 Provisions and accrued expenses 23,933 — — 23,933 23,933 Lease liabilities 191,907 — — 191,907 191,907 Other liabilities (6) 1,803 — — 1,803 1,803 Derivative liabilities — 1,068 5,460 6,528 6,528 Total carrying value $ 336,969 $ 1,068 $ 5,460 $ 343,497 $ 343,497 Notes: (1) Excluding non-financial (2) Excluding non-financial (3) Excluding non-financial (4) Excluding non-financial (5) Excluding non-financial (6) Excluding non-financial
Financial Assets and Liabilities Subject to Offsetting, Enforceable Master Netting Arrangements or Similar Agreements	Financial assets and liabilities subject to offsetting, enforceable master netting arrangements or similar agreements as at March 31, 2022 are as follows: Description of types of financial assets Gross amounts of recognized financial assets Gross amounts of recognized financial liabilities offset in the statement of financial position Net amounts of financial assets presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial Instruments Cash collateral received Derivative assets $ 13,600 $ — $ 13,600 $ (646 ) $ — $ 12,954 Total $ 13,600 $ — $ 13,600 $ (646 ) $ — $ 12,954 Description of types of financial liabilities Gross amounts of recognized financial liabilities Gross amounts of recognized financial assets offset in the statement of financial position Net amounts of financial liabilities presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial instruments Cash collateral pledged Derivative liabilities $ 6,873 $ — $ 6,873 $ (646 ) $ — $ 6,227 Total $ 6,873 $ — $ 6,873 $ (646 ) $ — $ 6,227 Financial assets and liabilities subject to offsetting, enforceable master netting arrangements or similar agreements as at March 31, 2021 are as follows: Description of types of financial assets Gross amounts of recognized financial assets Gross amounts of recognized financial liabilities offset in the statement of financial position Net amounts of financial assets presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial Instruments Cash collateral received Derivative assets $ 9,723 $ — $ 9,723 $ (4,392 ) $ — $ 5,331 Total $ 9,723 $ — $ 9,723 $ (4,392 ) $ — $ 5,331 Description of types of financial liabilities Gross amounts of recognized financial liabilities Gross amounts of recognized financial assets offset in the statement of financial position Net amounts of financial liabilities presented in the statement of financial position Related amount not set off in financial instruments Net Amount Financial instruments Cash collateral pledged Derivative liabilities $ 6,528 $ — $ 6,528 $ (4,392 ) $ — $ 2,136 Total $ 6,528 $ — $ 6,528 $ (4,392 ) $ — $ 2,136
Assets and Liabilities Measured at Fair Value on Recurring Basis	The assets and liabilities measured at fair value on a recurring basis as at March 31, 2022 are as follows: Fair value measurement at reporting date using Description March 31, 2022 Quoted prices in Significant other observable (Level 2) Significant unobservable Assets Financial assets at FVTPL Foreign exchange contracts $ 556 $ — $ 556 $ — Investments in marketable securities and mutual funds 263,013 262,602 411 — Financial assets at FVOCI Foreign exchange contracts 13,044 — 13,044 — Total assets $ 276,613 $ 262,202 $ 14,011 $ — Liabilities Financial liabilities at FVTPL Foreign exchange contracts $ 2,295 $ — $ 2,295 $ — Financial liabilities at FVOCI Foreign exchange contracts 4,578 — 4,578 — Interest rate swaps — — — — Total liabilities $ 6,873 $ — $ 6,873 $ — The assets and liabilities measured at fair value on a recurring basis as at March 31, 2021 are as follows: Fair value measurement at reporting date using Description March 31, 2021 Quoted prices in Significant Other observable inputs (Level 2) Significant unobservable inputs (Level 3) Assets Financial assets at FVTPL Foreign exchange contracts $ 2,619 $ — $ 2,619 $ — Investments in marketable securities and mutual funds 250,852 250,439 413 — Financial assets at FVOCI Foreign exchange contracts 7,104 — 7,104 — Total assets $ 260,575 $ 250,439 $ 10,136 $ — Liabilities Financial liabilities at FVTPL Foreign exchange contracts $ 1,068 $ — $ 1,068 $ — Financial liabilities at FVOCI Foreign exchange contracts 5,234 — 5,234 — Interest rate swaps 226 — 226 — Total liabilities $ 6,528 $ — $ 6,528 $ —
Notional Values of Outstanding Foreign Exchange Forward Contracts, Foreign Exchange Option Contracts and Interest Rate Swap Contracts	The following table presents the notional values of outstanding foreign exchange forward contracts, foreign exchange option contracts and interest rate swap contracts: As at March 31, 2022 March 31, 2021 Forward contracts (Sell) In US dollars $ 316,651 $ 260,999 In Pound Sterling 99,006 104,638 In Euro 21,811 26,395 In Australian dollars 27,290 29,076 Others 20,406 21,017 $ 485,164 $ 442,125 Option contracts (Sell) In US dollars $ 204,773 $ 137,687 In Pound Sterling 88,899 92,159 In Euro 26,147 33,202 In Australian dollars 38,004 45,022 Others — — $ 357,823 $ 308,070 Interest rate swap contracts In US dollars — 16,800
Gain/(Loss) Reclassified from Other Comprehensive Income into Consolidated Statement of Income	The amount of gain/ (loss) reclassified from other comprehensive income into consolidated statement of income in respective line items for the years ended March 31, 2022, 2021 and 2020 are as follows: Year ended March 31, 2022 2021 2020 Revenue $ 3,451 4,237 $ 12,695 Foreign exchange gain/(loss), net 93 (222 ) 543 Finance expense (217 ) (460 ) 171 Income tax related to amounts reclassified into consolidated statement of income (1,150 ) 425 (1,947 ) Total $ 2,177 3,980 $ 11,462
Foreign Currency Risk from Non-derivative Financial Instruments	The foreign currency risk from non-d e As at March 31, 2022 US Dollar Pound Sterling Indian Rupees Australian Dollar Euro Other currencies Total Cash and cash equivalents $ 3,412 1,813 — 54 899 196 $ 6,374 Investment 600 — — — — — 600 Trade receivables 127,640 22,934 1,363 7,366 11,631 3,064 173,998 Unbilled revenue 7,105 4,460 — — 4,304 537 16,406 Prepayments and other current assets 205 66 55 2 246 — 574 Other non-current 3 — — — — 16 19 Trade payables (33,849 ) (74,701 ) (5,576 ) (103 ) (20,627 ) (467 ) (135,323 ) Provisions and accrued expenses (4,493 ) (1,084 ) (56 ) — (446 ) (71 ) (6,150 ) Pension and other employee obligations — (794 ) — — (1 ) (441 ) (1,236 ) Lease liabilities — — — — (4,736 ) (27 ) (4,763 ) Other liabilities — (14 ) — — (2 ) — (16 ) Net assets/ (liabilities) $ 100,623 (47,320 ) (4,214 ) 7,319 (8,732 ) 2,807 $ 50,483 The foreign currency risk from non-derivative As at March 31, 2021 US Dollar Pound Sterling Indian Rupees Australian Dollar Euro Other currencies Total Cash and cash equivalents $ 2,739 1,818 — 61 1,024 314 $ 5,956 Trade receivables 116,135 34,041 1,269 7,411 10,911 3,543 173,310 Unbilled revenue 4,569 3,954 — — 3,271 275 12,069 Prepayments and other current assets 108 44 57 — 43 — 252 Other non-current 3 — — — — 16 19 Trade payables (44,492 ) (91,359 ) (5,770 ) — (20,540 ) (1,248 ) (163,409 ) Provisions and accrued expenses (3,886 ) (1,035 ) — (83 ) (587 ) — (5,591 ) Pension and other employee obligations (302 ) — — — (29 ) (347 ) (678 ) Lease liabilities — — — — (3,635 ) (52 ) (3,687 ) Other liabilities (1 ) (7 ) (2 ) (2 ) (7 ) (19 ) Net assets/ (liabilities) $ 74,873 (52,544 ) (4,444 ) 7,387 (9,544 ) 2,494 $ 18,222
Percentage of Revenue Generated from Top Customer and Top Five Customers	The following table gives details in respect of the percentage of revenue generated from the Company’s top customer and top five customers: Year ended March 31, 2022 2021 2020 Revenue from top customer 7.3 % 8.1 % 6.9 % Revenue from top five customers 27.1 % 26.8 % 25.1 %
Contractual Maturities of Financial Liabilities	The contractual maturities of financial liabilities are as follows: As at March 31, 2022 Less than 1 Year 1-2 years 2-5 years Total Trade payables $ 27,829 $ — $ — $ 27,829 Provisions and accrued expenses 36,752 — — 36,752 Other liabilities 2,015 — — 2,015 Other employee obligations 95,098 — — 95,098 Derivative financial instruments 6,042 831 — 6,873 Total (2) (3) $ 167,736 $ 831 $ — $ 168,567 Notes: (1) For contractual maturities of lease liabilities refer note 12. (2) Non-financial As at March 31, 2021 Less than 1 Year 1-2 years 2-5 years Total Long-term debt (includes current portion) (1) $ 16,800 $ — $ — $ 16,800 Trade payables 28,015 — — 28,015 Provisions and accrued expenses 23,933 — — 23,933 Other liabilities 1,803 — — 1,803 Other employee obligations 74,511 — — 74,511 Derivative financial instruments 4,491 2,037 — 6,528 Total (2) (3) $ 149,553 $ 2,037 $ — $ 151,590 Notes: (1) Before netting off debt issuance cost of $52. (2) For contractual maturities of lease liabilities refer note 12. (3) Non-financial
Summary of Net Cash Position	The balanced view of liquidity and financial indebtedness is stated in the table below. This calculation of the net cash position is used by the management: As at March 31, 2022 March 31, 2021 Cash and cash equivalents $ 108,153 $ 105,633 Investments 304,840 289,551 Long-term debt (includes current portion) (1) — (16,800 ) Net cash position $ 412,993 $ 378,384 Note: (1) Before netting off debt issuance cost of $Nil and $52 as at March 31, 2022 and March 31, 2021, respectively.

Pension and other employee ob_2

Pension and other employee obligations (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Pension and Other Employee Obligations	Pension and other employee obligations consist of the following: As at March 31, 2022 March 31, 2021 Current: Salaries and bonus $ 93,210 $ 72,314 Pension 1,365 115 Withholding taxes on salary and statutory payables 11,193 10,157 Total $ 105,768 $ 82,586 Non-current: Pension and other obligations $ 16,238 $ 19,589 Total $ 16,238 $ 19,589
Summary of Employee Benefit Costs	Employee benefit costs consist of the following: Year ended March 31, 2022 2021 2020 Salaries and bonus $ 608,064 $ 498,431 $ 487,246 Employee benefit plans: Defined contribution plan 15,296 12,648 12,675 Defined benefit plan 4,339 2,839 2,634 Share-based compensation expense (Refer Note 24) 44,165 38,230 37,520 Total $ 671,864 $ 552,148 $ 540,075 Employee benefit costs is recognized in the following line items in the consolidated statement of income: Year ended March 31, 2022 2021 2020 Cost of revenue $ 503,748 $ 404,431 $ 399,441 Selling and marketing expenses 46,614 43,601 40,816 General and administrative expenses 121,502 104,116 99,818 Total $ 671,864 $ 552,148 $ 540,075
Contributions to Defined Contribution Plans	The Company’s contributions to defined contribution plans are as follows: Year ended March 31, 2022 2021 2020 India $ 10,758 $ 8,681 $ 8,772 United States 2,110 1,770 1,548 United Kingdom 825 898 892 South Africa 801 596 789 Sri Lanka 567 512 480 Philippines 235 191 194 Total $ 15,296 $ 12,648 $ 12,675
Summary of Net Periodic Cost	The net periodic cost recognized by the Company in respect of gratuity payments under the Company’s gratuity plans covering eligible employees of the Company in India, the Philippines and Sri Lanka is as follows: Year ended March 31, 2022 2021 2020 Service cost $ 3,368 $ 2,047 $ 1,915 Interest on the net defined benefit liability 971 792 719 Net gratuity cost $ 4,339 $ 2,839 $ 2,634
Summary of Net Defined Benefit Liability (Asset)	As at March 2022 March 2021 Change in projected benefit obligations Obligation at beginning of the year $ 17,220 $ 13,524 Foreign currency translation (790 ) 441 Service cost 3,368 2,047 Interest cost 1,097 869 Benefits paid (2,374 ) (1,116 ) Business combinations 1,223 — Actuarial (gain)/loss From changes in demographic assumptions (1,334 ) 1,061 From changes in financial assumptions 238 341 From actual experience compared to assumptions (188 ) 53 Benefit obligation at end of the year $ 18,460 $ 17,220 Change in plan assets Plan assets at beginning of the year $ 1,314 $ 1,146 Foreign currency translation (51 ) 40 Expected return on plan assets 126 77 Actual contributions 2,415 1,031 Benefits paid (2,260 ) (1,023 ) Business combinations 1,191 — Actuarial gain 10 43 Plan assets at end of the year $ 2,745 $ 1,314 Accrued pension liability Current $ 1,365 $ 115 Non-current 14,350 15,791 Net amount recognized $ 15,715 $ 15,906 Present value of funded defined benefit obligation $ 18,035 $ 16,378 Fair value of plan assets (2,745 ) (1,314 ) 15,290 15,064 Present value of unfunded defined benefit obligation $ 425 $ 842 Weighted average duration of defined benefit obligation (both funded and unfunded) 5.1 years 8.9 years
Actuarial Assumptions For Gratuity Plans	The assumptions used in accounting for the gratuity plans are as follows: Year ended March 31, 2022 2021 2020 Discount rate: India 6.2% to 6.6% 6.4% 6.3% to 6.6% Philippines 1.7% 3.1% 3.7% Sri Lanka 16.4% 8.1% 9.8% Rate of increase in compensation level 8.0% to 10.0% 7.0% to 8.0% 7.0% to 8.0% Expected rate of return on plan assets 6.5% to 6.6% 6.4% 6.6%
Sensitivity of Defined Benefit Obligation to a Change in Each Significant Actuarial Assumption	As at March 31, 2022, for each of the Company’s defined benefit plans, the sensitivity of the defined benefit obligation to a change in each significant actuarial assumption is as follows: India Philippines Sri Lanka Discount rate: Increase in discount rate by 1% (4.7 )% (1.1 )% (5.2 )% Decrease in discount rate by 1% 5.2 % 1.1 % 5.8 % Rate of increase in compensation level: Increase in salary escalation rate by 1% 3.7 % 0.6 % 5.7 % Decrease in salary escalation rate by 1% (3.5 )% (0.6 )% (5.1 )%
Maturity Analysis of Defined Benefit Payments	The maturity analysis of the Company’s defined benefit payments is as follows: Amount 2023 $ 3,164 2024 3,128 2025 3,194 2026 3,195 2027 3,437 Thereafter 16,143 $ 32,261

Provisions and accrued expens_2

Provisions and accrued expenses (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Provisions and Accrued Expenses	Provisions and accrued expenses consist of the following: As at March 31, 2022 March 31, 2021 Accrued expenses 36,752 23,933 Total $ 36,752 $ 23,933

Contract liabilities (Tables)

Contract liabilities (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Contract Liabilities	Contract liabilities consists of the following: As at March 31, 2022 March 31, 2021 Current: Payments in advance of services $ 8,344 $ 8,998 Advance billings 5,081 3,489 Others 298 198 Total $ 13,723 $ 12,685 Non-current: Payments in advance of services $ 12,072 $ 15,876 Advance billings 1,226 752 Others 16 17 Total $ 13,314 $ 16,645

Other liabilities (Tables)

Other liabilities (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Other Liabilities	Other liabilities consist of the following: As at March 31, 2022 March 31, 2021 Current: Withholding taxes and value added tax payables $ 8,164 $ 9,288 Other liabilities 3,187 2,204 Total $ 11,351 $ 11,492 Non-current: Other liabilities 78 211 Total $ 78 $ 211

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Revenue by Service Type	Revenue by service type Year ended March 31, 2022 2021 2020 Industry-specific $ 431,770 $ 372,505 $ 364,022 Finance and accounting 248,572 212,563 211,069 Customer experience services 189,615 154,368 192,466 Research and analytics 116,081 94,545 96,337 Auto claims 96,123 54,620 46,418 Others 27,639 24,042 17,946 Total $ 1,109,800 $ 912,643 $ 928,258
Summary of Revenue by Industry	Revenue by industry Year ended March 31, 2022 2021 2020 Insurance* $ 332,335 $ 266,669 $ 257,586 Healthcare 196,614 172,878 146,622 Diversified businesses including manufacturing, retail, CPG, media and entertainment, and telecom 149,884 139,449 152,973 Travel and leisure 163,849 129,231 166,766 Shipping and logistics 85,258 63,530 56,064 Hi-tech and professional services 69,278 56,386 49,698 Banking and financial services 64,034 42,555 40,485 Utilities 48,548 41,945 58,064 Total $ 1,109,800 $ 912,643 $ 928,258 * Includes revenue disclosed under the Auto Claims BPM segment in Note 28.
Summary of Revenue by Contract Type	Revenue by contract type Year ended March 31, 2022 2021 2020 Full-time-equivalent $ 703,440 $ 592,868 $ 615,765 Transaction* 188,357 133,423 144,637 Subscription 102,859 98,176 83,135 Fixed price 63,570 42,371 43,518 Others 51,574 45,805 41,203 Total $ 1,109,800 $ 912,643 $ 928,258 * Includes revenue disclosed under the Auto Claims BPM segment in Note 28.
Summary of Revenue by Delivery Location Explanatory	Revenue by delivery location Year ended March 31, 2022 2021 2020 India $ 555,796 $ 463,908 $ 476,078 United States 168,493 150,418 134,031 Philippines 143,238 119,855 130,350 UK* 127,826 72,178 60,244 South Africa 56,735 51,625 68,051 Sri Lanka 16,282 15,748 13,766 China 13,880 12,740 12,399 Romania 12,756 13,107 17,433 Spain 5,314 5,224 8,959 Poland 4,989 4,816 3,649 Costa Rica 3,643 3,024 3,298 Australia 848 — — Total $ 1,109,800 $ 912,643 $ 928,258 * Includes revenue disclosed under the Auto Claims BPM segment in Note 28.
Summary of Movement in Contract Assets	The movement in contract assets during the year ended March 31, 2022 is as follows: As at March 31, 2022 Sales Transition Upfront Total Opening balance $ 8,112 $ 17,656 $ 9,121 $ 34,889 Additions during the year 5,209 17,923 10,811 33,943 Amortization/recognition during the year (2,190 ) (7,352 ) (7,736 ) (17,278 ) Impairment loss recognized during the year (46 ) — — (46 ) Translation adjustments (240 ) (866 ) (400 ) (1,506 ) Closing balance $ 10,845 $ 27,361 $ 11,796 $ 50,002 The movement in contract assets during the year ended March 31, 2021 is as follows: As at March 31, 2021 Sales Transition Upfront Total Opening balance $ 7,427 $ 19,006 $ 9,932 $ 36,365 Additions during the year 2,365 7,151 5,008 14,524 Amortization/recognition during the year (1,816 ) (9,216 ) (6,725 ) (17,757 ) Impairment loss recognized during the year (351 ) — — (351 ) Translation adjustments 487 715 906 2,108 Closing balance $ 8,112 $ 17,656 $ 9,121 $ 34,889
Summary of Movement in Contract Liabilities	As at March 31, 2022 March 31, 2021 Contract liabilities: Payments in advance of services $ 20,416 $ 24,874 Advance billings 6,307 4,241 Others 314 215 Total $ 27,037 $ 29,330 Revenue recognized during the year ended March 31, 2022 and 2021, which was included in the contract liabilities balance at the beginning of the respective periods is as follows: As at March 31, 2022 March 31, 2021 Payments in advance of services $ 9,114 $ 7,695 Advance billings 2,742 3,168 Others 136 492 Total $ 11,992 $ 11,355
Summary of Estimated Revenue Expected to be Recognized in Future Related to Remaining Performance Obligations	The estimated revenue expected to be recognized in the future relating to remaining performance obligations as at March 31, 2022 and March 31, 2021 is as follows: As at March 31, 2022 Less 1-2 years 2-5 More Total Transaction price allocated to remaining performance obligations $ 15,141 $ 5,475 $ 2,086 $ — $ 22,702 As at March 31, 2021 Less 1-2 years 2-5 More Total Transaction price allocated to remaining performance obligations $ 8,807 $ 7,842 $ 6,206 $ 14 $ 22,869

Expenses by nature (Tables)

Expenses by nature (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Expenses by Nature	Expenses by nature consist of the following: Year ended March 31, 2022 2021 2020 Employee cost $ 671,864 $ 552,148 $ 540,075 Repair payments 82,954 43,942 32,047 Facilities cost 61,238 54,563 62,743 Depreciation 50,003 48,923 47,220 Legal and professional expenses 22,207 23,298 21,996 Travel expenses 4,878 1,927 22,373 Others 47,005 38,312 38,860 Total cost of revenue, selling and marketing and general and administrative expenses $ 940,149 $ 763,113 $ 765,314

Finance expense (Tables)

Finance expense (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Finance Expense	Finance expense consists of the following: Year ended March 31, 2022 2021 2020 Interest expense on lease liabilities $ 12,657 $ 13,689 $ 14,782 Interest expense 461 552 2,169 Loss/(gain) on interest rate swaps 217 460 (171 ) Debt issuance cost 52 126 231 Total $ 13,387 $ 14,827 $ 17,011

Other income, net (Tables)

Other income, net (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Other Income, Net	Other income, net consists of the following: Year ended March 31, 2022 2021 2020 Net gain arising on financial assets designated as FVTPL $ 7,137 $ 6,352 $ 7,547 Interest income 3,772 3,702 3,840 Others, net 2,958 2,410 2,988 Total $ 13,867 $ 12,464 $ 14,375

Share-based payments (Tables)

Share-based payments (Tables)	12 Months Ended
	Mar. 31, 2022
Statement [LineItems]
Summary of Share-based Compensation Expense	Share-based compensation expense during the years ended March 31, 2022, 2021 and 2020 is as follows: Year ended March 31, 2022 2021 2020 Share-based compensation expense recorded in: $ $ $ Cost of revenue 5,155 4,890 4,589 Selling and marketing expenses 4,948 4,327 4,789 General and administrative expenses 34,062 29,013 28,142 Total share-based compensation expense $ 44,165 $ 38,230 $ 37,520
Movements in Number of Options Outstanding under 2006 Incentive Award Plan and Related Weighted Average Exercise Prices	(i) Movements in the number of RSUs dependent on non-market Shares Weighted Aggregate intrinsic value Outstanding as at March 31, 2020 884,590 $ 44.07 $ 38,020 Granted 362,795 43.26 Exercised (304,822 ) 42.14 Forfeited (18,514 ) 51.26 Outstanding as at March 31, 2021 924,049 $ 44.25 $ 66,938 Granted 295,441 74.14 Exercised (293,769 ) 47.24 Forfeited (40,264 ) 56.52 Outstanding as at March 31, 2022 885,457 $ 52.67 $ 75,698 RSUs exercisable 488,608 $ 45.53 $ 41,771
RSUs dependent on market performance condition [member]
Statement [LineItems]
Movements in Number of Shares Outstanding under 2006 and 2016 Incentive Award Plan and Related Weighted Average Fair Values	Movements in the number of RSUs dependent on market performance condition outstanding under the 2006 Incentive Award Plan and the 2016 Incentive Award Plan and their related weighted average fair values are as follows: Shares Weighted average fair value Aggregate intrinsic value Outstanding as at March 31, 2020 198,990 $ 13.09 $ 7,908 Granted — — Exercised (123,345 ) 12.62 Forfeited — — Lapsed — — Outstanding as at March 31, 2021 75,645 $ 14.10 $ 5,480 Granted — Exercised (16,245 ) 13.39 Forfeited — Lapsed — Outstanding as at March 31, 2022 59,400 14.30 $ 5,078 RSUs exercisable 59,400 $ 14.30 $ 5,078
RSUs related total shareholders return [member]
Statement [LineItems]
Movements in Number of Shares Outstanding under 2006 and 2016 Incentive Award Plan and Related Weighted Average Fair Values	Movements in the number of RSUs linked to the TSR condition outstanding under the 2016 Incentive Award Plan and their related weighted average fair values are as follows: Shares Weighted Average Aggregate Intrinsic Outstanding as at March 31, 2020 533,253 $ 51.07 $ 22,919 Granted 314,771 35.22 Exercised (19,039 ) 36.52 Forfeited (2,775 ) 34.53 Lapsed — — Outstanding as at March 31, 2021 826,210 $ 45.45 $ 59,851 Granted 154,110 78.80 Exercised (15,209 ) 50.22 Forfeited (15,111 ) 38.70 Lapsed (50,550 ) 57.20 Outstanding as at March 31, 2022 899,450 50.53 76,894 RSUs exercisable 268,777 $ 42.92 $ 22,978
PSUs [member]
Statement [LineItems]
Movements in Number of Shares Outstanding under 2006 and 2016 Incentive Award Plan and Related Weighted Average Fair Values	Movements in the number of PSUs outstanding under the 2006 Incentive Award Plan and the 2016 Incentive Award Plan and their related weighted average fair values are as follow: Shares Weighted average fair value Aggregate intrinsic value Outstanding as at March 31, 2020 911,518 $ 36.67 $ 39,176 Granted 193,249 68.05 Exercised (321,357 ) 30.36 Forfeited (12,121 ) 53.38 Outstanding as at March 31, 2021 771,289 $ 43.21 $ 55,870 Granted 275,245 73.46 Exercised (192,053 ) 35.65 Forfeited (16,173 ) 60.58 Outstanding as at March 31, 2022 838,308 49.19 71,667 PSUs exercisable 341,072 $ 38.64 $ 29,158

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Domestic and Foreign Source Component of Profit/(Loss) Before Income Taxes	The domestic and foreign source component of profit/(loss) before income taxes is as follows: Year ended March 31, 2022 2021 2020 Domestic $ (11,150 ) $ (8,176 ) $ (2,795 ) Foreign 175,690 140,867 146,747 Profit before income taxes $ 164,540 $ 132,691 $ 143,952
Income Tax Expense	The Company’s income tax expense consists of the following: Year ended March 31, 2022 2021 2020 Current taxes Domestic taxes $ — $ — $ — Foreign taxes 37,579 31,326 31,270 37,579 31,326 31,270 Deferred taxes Domestic taxes — — — Foreign taxes (5,140 ) (1,252 ) (4,087 ) (5,140 ) (1,252 ) (4,087 ) Income tax expense $ 32,439 $ 30,074 $ 27,183
Income Taxes Recognized Directly in Equity	Income taxes recognized directly in equity are as follows: Year ended March 31, 2022 2021 2020 Current taxes: Excess tax deductions related to share-based payments (1,062 ) (729 ) (998 ) $ (1,062 ) $ (729 ) $ (998 ) Deferred taxes: Excess tax deductions related to share-based payments (877 ) (1,640 ) 807 $ (877 ) $ (1,640 ) $ 807 Total income tax recognized directly in equity $ (1,939 ) $ (2,369 ) $ (191 )
Income Taxes Recognized in Other Comprehensive Income	Income taxes recognized in other comprehensive income are as follows: Year ended March 31, 2022 2021 2020 Current taxes — — — Deferred taxes: Unrealized gain/(loss) on cash flow hedging derivatives 2,698 1,089 (2,939 ) Pension liability 148 (248 ) (189 ) Total income tax recognized directly in other comprehensive income $ 2,846 $ 841 $ (3,128 )
Reconciliation of Estimated Income Tax to Provision for Income Taxes	The reconciliation of estimated income tax to income tax expense: Year ended March 31, 2022 2021 2020 Profit before income taxes $ 164,540 $ 132,691 $ 143,952 Income tax expense at tax rates applicable to individual entities 50,954 41,268 43,379 Effect of: Items not deductible for tax 358 401 414 Exempt income (20,557 ) (11,340 ) (18,380 ) Non tax deductible goodwill impairment — — 776 Losses in respect of which deferred tax asset not recognized due to uncertainty and ineligibility to carry forward 2,183 106 178 Recognition of unutilized tax benefits / Unrecognized losses utilized (56 ) (472 ) (264 ) Temporary difference that will reverse during tax holiday period 2,828 1,139 2,138 Change in tax rate and law (160 ) 1,228 55 Provision for uncertain tax position — — (409 ) State taxes 345 458 61 Employment related tax incentive (2,123 ) (1,734 ) (1,253 ) Others, net (1,333 ) (980 ) 488 Income tax expense $ 32,439 $ 30,074 $ 27,183
Summary of Deferred Taxes Arising from Temporary Differences and Unused Tax Losses	Deferred taxes for the year ended March 31, 2022 arising from temporary differences and unused tax losses can be summarized below: Opening Balance Additions due to acquisition Recognized in income Recognized in equity Recognized in/ Reclassified from other comprehensive income Foreign currency translation Closing balance Deferred tax assets: Property and equipment $ 6,188 $ 237 $ 254 $ — $ — $ (152 ) $ 6,527 Net operating loss carry forward 1,249 — (294 ) — — (23 ) 932 Accruals deductible on actual payment 10,549 153 1,743 — (148 ) (295 ) 12,002 Share-based compensation expense 21,036 — 3,678 877 — (661 ) 24,930 Others 799 — (33 ) — — (12 ) 754 Total deferred tax assets $ 39,821 $ 390 $ 5,348 $ 877 $ (148 ) $ (1,143 ) $ 45,145 Deferred tax liabilities: Intangible assets 11,967 1 32 — — (17 ) 11,983 Unrealized gain/(loss) on cash flow hedging and investments 1,387 — (117 ) — 2,698 (114 ) 3,854 Others 3,674 — 293 — — (134 ) 3,833 Total deferred tax liabilities $ 17,028 $ 1 $ 208 $ — $ 2,698 $ (265 ) $ 19,670 Net deferred tax assets/(liabilities) $ 22,793 $ 389 $ 5,140 $ 877 $ (2,846 ) $ (878 ) $ 25,475 Deferred taxes for the year ended March 31, 2021 arising from temporary differences and unused tax losses can be summarized below: Opening Balance Additions due to acquisition Recognized in statement of income Recognized in equity Recognized in/ Reclassified from other comprehensive income Foreign currency translation Closing balance Deferred tax assets: Property and equipment $ 5,592 $ — $ 40 $ — $ — $ 556 $ 6,188 Net operating loss carry forward 779 — 417 — — 53 1,249 Accruals deductible on actual payment 9,825 — (120 ) — 248 596 10,549 Share-based compensation expense 16,101 — 1,861 1,640 — 1,434 21,036 Minimum alternate tax 629 — (654 ) — — 25 — Others 130 — 610 — — 59 799 Total deferred tax assets $ 33,056 $ — $ 2,154 $ 1,640 $ 248 $ 2,723 $ 39,821 Deferred tax liabilities: Intangible assets 11,437 — 312 — — 218 11,967 Unrealized gain/(loss) on cash flow hedging and investments 352 — (52 ) — 1,089 (2 ) 1,387 Others 2,380 — 642 — — 652 3,674 Total deferred tax liabilities $ 14,169 $ — $ 902 $ — $ 1,089 $ 868 $ 17,028 Net deferred tax assets/(liabilities) $ 18,887 $ — $ 1,252 $ 1,640 $ (841 ) $ 1,855 $ 22,793 Deferred taxes for the year ended March 31, 2020 arising from temporary differences and unused tax losses can be summarized below: Opening Balance Transition Recognized in statement of income Recognized in equity Recognized in/ Reclassified from other comprehensive income Foreign currency translation Closing balance Deferred tax assets: Property and equipment $ 7,073 $ — $ (736 ) $ — $ — $ (745 ) $ 5,592 Net operating loss carry forward 1,287 — (430 ) — — (78 ) 779 Accruals deductible on actual payment 7,358 2,106 1,226 — 189 (1,054 ) 9,825 Share-based compensation expense 14,120 — 3,917 (807 ) — (1,129 ) 16,101 Minimum alternate tax 552 — 135 — — (58 ) 629 Others 482 — (295 ) — — (57 ) 130 Total deferred tax assets $ 30,872 $ 2,106 $ 3,817 $ (807 ) $ 189 $ (3,121 ) $ 33,056 Deferred tax liabilities: Intangible assets 12,183 — (753 ) — — 7 11,437 Unrealized gain/(loss) on cash flow hedging and investments 3,539 — (5 ) — (2,939 ) (243 ) 352 Others 2,084 — 488 — — (192 ) 2,380 Total deferred tax liabilities $ 17,806 $ — $ (270 ) $ — $ (2,939 ) $ (428 ) $ 14,169 Net deferred tax assets/(liabilities) $ 13,066 $ 2,106 $ 4,087 $ (807 ) $ 3,128 $ (2,693 ) $ 18,887
Deferred Tax Presented in Consolidated Statement of Financial Position	Deferred tax presented in the consolidated statement of financial position is as follows: As at March 31, 2022 March 31, 2021 Deferred tax assets 34,765 33,022 Deferred tax liabilities (9,290 ) (10,228 ) Net deferred tax assets $ 25,475 $ 22,794

Earnings per share (Tables)

Earnings per share (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Computation of Basic and Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share: Year ended March 31, 2022 2021 2020 Numerator: Profit after tax $ 132,101 $ 102,617 $ 116,769 Denominator: Basic weighted average ordinary shares outstanding 48,891,004 49,765,672 49,726,636 Dilutive impact of equivalent share-based options and RSUs 2,357,573 2,343,077 2,310,304 Diluted weighted average ordinary shares outstanding 51,248,577 52,108,749 52,036,940

Related party (Tables)

Related party (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
List of the Company's Subsidiaries	The following is a list of the Company’s subsidiaries as at March 31, 2022: Direct subsidiaries Step subsidiaries Place of WNS Global Services Netherlands B.V. (1) The Netherlands WNS Global Services (Romania) S.R.L. Romania WNS North America Inc. Delaware, USA WNS Business Consulting Services Private Limited India WNS Global Services Inc. Delaware, USA WNS BPO Services Costa Rica, S.R.L. Costa Rica Denali Sourcing Services Inc. Delaware, USA - WNS Denali Sourcing Services Inc. (2) Delaware, USA WNS Assistance Limited (previously WNS Workflow Technologies Limited) United Kingdom WNS Assistance (Legal) Limited United Kingdom Accidents Happen Assistance Limited United Kingdom WNS Legal Assistance LLP United Kingdom WNS (Mauritius) Limited Mauritius WNS Capital Investment Limited Mauritius - WNS Customer Solutions (Singapore) Private Limited Singapore -WNS Global Services (Australia) Pty Ltd Australia - WNS New Zealand Limited New Zealand - Business Applications Associates Beijing Ltd China WNS Global Services Private Limited (3) India - WNS Global Services (UK) Limited (4) United Kingdom - WNS Global Services SA (Pty) Limited South Africa - WNS B-BBEE (5) South Africa - Ucademy (Pty) Limited South Africa - WNS South Africa (Pty) Limited (6) South Africa - MTS HealthHelp Inc. Delaware, USA - HealthHelp Holdings LLC Delaware, USA - HealthHelp LLC Delaware, USA - WNS-HealthHelp Philippines - Value Edge Inc. Delaware, USA - Value Edge AG. Switzerland -VE Value Edge GmbH Germany WNS Global Services (Private) Limited Sri Lanka WNS Global Services (Dalian) Co. Ltd. China WNS Global Services (UK) International Limited United Kingdom - WNS Global Services North Americas Inc. Delaware, USA - WNS Global Services AG (7) Switzerland - WNS Global Services Lisbon Unipessoal LDA (8) Portugal WNS Information Services (India) Private Limited (9) India WNS Business Consulting Netherlands B.V. (10) The Netherlands WNS Global Services Philippines Inc. The Philippines WNS Gestion des Processus d’Affaire Inc. (11) Canada Notes: (1) WNS Global Services Netherlands Cooperatief U.A. was converted into a BV entity with effect from January 9, 2020. As a consequence, the name of WNS Global Services Netherlands Cooperatief U.A. was changed to WNS Global Services Netherlands B.V. with effect from January 9, 2020. (2) WNS Denali Sourcing Services Inc., a wholly-owned subsidiary of Denali Sourcing Services Inc., was incorporated on November 27, 2019. (3) WNS Global Services Private Limited is held jointly by WNS (Mauritius) Limited, WNS Global Services Netherlands B.V. and WNS Customer Solutions (Singapore) Private Limited. The percentage of holding of WNS (Mauritius) Limited is 63.18%, of WNS Global Services Netherlands B.V. is 20.84%, and of WNS Customer Solutions (Singapore) Private Limited is 15.98%. (4) WNS Global Services (UK) Limited is jointly held by WNS Global Services Private Limited and WNS (Holdings) Limited. The percentage of holding of WNS Global Services Private Limited is 94.9% and of WNS (Holdings) Limited is 5.1%. (5) The WNS B-BBEE (6) WNS South Africa (Pty) Limited was incorporated as a subsidiary of WNS Global Services SA (Pty) Limited on December 19, 2018. The name of the entity was changed to WNS South Africa (Pty) Ltd with effect from September 25, 2019. (7) WNS Global Services AG, a wholly-owned subsidiary of WNS Global Services (UK) International Limited, was incorporated on July 16, 2021. (8) WNS Global Services Lisbon Unipessoal LDA, a wholly-owned subsidiary of WNS Global Services (UK) International Limited, was incorporated on August 13, 2021. (9) On August 1, 2021, the Company acquired all outstanding shares of MOL Information Processing Services (I) Private Limited. The name of the entity was changed to WNS Information Services (India) Private Limited with effect from December 1, 2021. (10) WNS Business Consulting Netherlands B.V., a wholly-owned subsidiary of WNS (Holdings) Limited, was incorporated on March 17, 2020 pursuant to the execution of deed of demerger on March 16, 2020. The shares of WNS Global Services Philippines Inc. were transferred from WNS Global Services Netherlands B.V. to WNS Business Consulting Netherlands B.V. pursuant to the proposal of demerger. (11) WNS Gestion des Processus d’Affaire Inc. was incorporated on April 28, 2020.
Key Management Personnel Compensation	Year ended March 31, Nature of transaction with related parties 2022 2021 2020 Key management personnel* Remuneration and short-term benefits 7,601 7,380 6,959 Defined contribution plan 124 105 114 Other benefits 114 47 54 Share-based compensation expense 15,264 14,830 17,167 * Defined benefit plan related costs are not disclosed as these are determined for the Company as a whole.

Operating segments (Tables)

Operating segments (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Segment Results for Operating Segments	The segment results for the year ended March 31, 2022 are as follows: Year ended March 31, 2022 WNS Global BPM WNS Auto Claims BPM Inter segments (1) Total Revenue from external customers $ 1,013,677 $ 96,123 $ — $ 1,109,800 Segment revenue $ 1,014,671 $ 96,123 $ (994 ) $ 1,109,800 Payments to repair centers — 82,954 — 82,954 Revenue less repair payments (non-GAAP) 1,014,671 13,169 (994 ) 1,026,846 Depreciation 49,277 726 — 50,003 Other costs 742,745 15,317 (994 ) 757,068 Segment operating profit/(loss) 222,649 (2,874 ) — 219,775 Other income, net (13,134 ) (733 ) — (13,867 ) Finance expense 13,323 64 — 13,387 Segment profit/(loss) before income taxes 222,460 (2,205 ) — 220,255 Income tax expense 32,703 (264 ) — 32,439 Segment profit/(loss) 189,757 (1,941 ) — 187,816 Amortization of intangible assets 11,550 Share-based compensation expense 44,165 Profit after tax $ 132,101 Addition to non-current (2) $ 39,094 $ 2,232 $ — $ 41,326 Total assets, net of elimination 1,044,865 119,627 — 1,164,492 Total liabilities, net of elimination $ 319,936 $ 90,553 $ — $ 410,489 (1) Transactions between inter segments represent business process management services rendered by WNS Global BPM to WNS Auto Claims BPM. (2) Addition to non-current right-of-use No client individually accounted for more than 10% of the total revenue during the year ended March 31, 2022. The segment results for the year ended March 31, 2021 are as follows: Year ended March 31, 2021 WNS Global BPM WNS Auto Claims BPM Inter segments (1) Total Revenue from external customers $ 858,023 $ 54,620 $ — $ 912,643 Segment revenue $ 858,368 $ 54,620 $ (345 ) $ 912,643 Payments to repair centers — 43,942 — 43,942 Revenue less repair payments (non-GAAP) 858,368 10,678 (345 ) 868,701 Depreciation 48,302 621 — 48,923 Other costs 620,487 12,630 (345 ) 632,772 Segment operating profit/(loss) 189,579 (2,573 ) — 187,006 Other income, net (11,847 ) (617 ) — (12,464 ) Finance expense 14,758 69 — 14,827 Segment profit/(loss) before income taxes 186,668 (2,025 ) — 184,643 Income tax expense 29,661 413 — 30,074 Segment profit/(loss) 157,007 (2,438 ) — 154,569 Amortization of intangible assets 13,722 Share-based compensation expense 38,230 Profit after tax $ 102,617 Addition to non-current (2) $ 46,806 $ 1,792 $ — $ 48,598 Total assets, net of elimination 979,281 126,867 — 1,106,148 Total liabilities, net of elimination $ 329,192 $ 92,864 $ — $ 422,056 (1) Transactions between inter segments represent business process management services rendered by WNS Global BPM to WNS Auto Claims BPM. (2) Addition to non-current right-of-use The segment results for the year ended March 31, 2020 are as follows: Year ended March 31, 2020 WNS Global BPM WNS Auto Claims BPM Inter segments (1) Total Revenue from external customers $ 881,840 $ 46,418 $ — $ 928,258 Segment revenue $ 882,016 $ 46,418 $ (176 ) $ 928,258 Payments to repair centers — 32,047 — 32,047 Revenue less repair payments (non-GAAP) 882,016 14,371 (176 ) 896,211 Depreciation 46,722 498 — 47,220 Other costs 630,375 14,946 (176 ) 645,145 Impairment of goodwill (Refer Note 9) — 4,085 — 4,085 Segment operating profit/(loss) 204,919 (5,158 ) — 199,761 Other income, net (13,298 ) (1,077 ) — (14,375 ) Finance expense 16,932 79 — 17,011 Segment profit/(loss) before income taxes 201,285 (4,160 ) — 197,125 Income tax expense 27,387 (204 ) — 27,183 Segment profit/(loss) 173,898 (3,956 ) — 169,942 Amortization of intangible assets 15,653 Share-based compensation expense 37,520 Profit after tax $ 116,769 Addition to non-current (2) $ 42,973 $ 1,760 $ — $ 44,733 Total assets, net of elimination 892,572 119,757 — 1,012,329 Total liabilities, net of elimination $ 339,660 $ 85,559 $ — $ 425,219 (1) Transactions between inter segments represent business process management services rendered by WNS Global BPM to WNS Auto Claims BPM. (2) Addition to non-current right-of-use
External Revenue and Non-current Assets (Excluding Goodwill and Intangible Assets) by Geographic Area	Revenues from the geographic segments based on domicile of the customer. The Company’s external revenue by geographic area is as follows: Year ended March 31, 2022 2021 2020 Jersey, Channel Islands $ — $ — $ — North America (primarily the US) 504,260 403,527 392,601 UK 363,871 286,646 291,295 Australia 67,409 70,297 79,875 Europe (excluding the UK) 67,918 61,381 74,308 South Africa 22,270 26,450 35,429 Rest of the world 84,072 64,342 54,750 Total $ 1,109,800 $ 912,643 $ 928,258 The Company’s non-current right-of-use As at March 31, 2022 2021 Jersey, Channel Islands $ — $ — India 90,272 108,971 Philippines 59,030 58,149 South Africa 12,136 16,737 North America 14,707 16,601 UK 5,066 6,396 Rest of the world 10,669 12,184 Total $ 191,880 $ 219,038

Additional capital disclosures

Additional capital disclosures (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [abstract]
Summary of Capital Structure	The capital structure as at March 31, 2022 and 2021 was as follows: As at March 31, 2022 2021 % Change Total equity attributable to the equity shareholders of the Company $ 754,003 $ 684,092 10 % As percentage of total capital 100 % 98 % Long-term debt (1) — 16,800 (100 )% Total debt $ — $ 16,800 (100 )% As percentage of total capital — 2 % Total capital (debt and equity) $ 754,003 $ 700,892 8 % Note: (1) Before netting off debt issuance cost of Nil and $52 as at March 31, 2022 and March 31, 2021, respectively.

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Estimated Useful Lives of Property and Equipment (Detail)	12 Months Ended
	Mar. 31, 2022
Buildings [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property and equipment	20 years
Computers and software [member] | Bottom of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property and equipment	3 years
Computers and software [member] | Top of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property and equipment	4 years
Furniture, fixtures and office equipment [member] | Bottom of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property and equipment	2 years
Furniture, fixtures and office equipment [member] | Top of range [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property and equipment	5 years
Vehicles [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property and equipment	3 years
Leasehold improvements [member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful lives of property and equipment	Lesser of estimated useful life or lease term

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Estimated Useful Life of Intangible Assets (Detail)	12 Months Ended
	Mar. 31, 2022
Customer contracts [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	46 months
Customer relationships [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	218 months
Covenant not-to-compete [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	48 months
Trade names [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	34 months
Technology [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	94 months
Intellectual property and other rights [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	24 months
Software [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	50 months
Service mark [member]
Disclosure of detailed information about intangible assets [line items]
Weighted average amortization period of definite lived intangible assets	Indefinite useful life

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Defined Benefit Plan - Additional Information (Detail) $ in Thousands	12 Months Ended
	Mar. 31, 2022USD ($)
Disclosure of defined benefit plans [abstract]
Approximate maximum amount per employee available for lump-sum payment to eligible employees in India	$ 26

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Revenue Recognition - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2022
Bottom of range [member]
Disclosure of revenue [line items]
Usual payment terms	30 days
Top of range [member]
Disclosure of revenue [line items]
Usual payment terms	60 days

Business Combinations - Additio

Business Combinations - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 01, 2021	Jan. 20, 2017	Jun. 14, 2016	Jun. 30, 2017	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2021
Disclosure of detailed information about business combination [line items]
Goodwill					$ 123,537	$ 123,979
Payment of contingent consideration					0	0	$ 1,745
Denali Sourcing Services Inc. [member]
Disclosure of detailed information about business combination [line items]
Purchase consideration		$ 38,668
Working capital adjustments									$ 968
Contingent consideration		$ 6,277
Payment of contingent consideration				$ 522			1,745	$ 2,484	2,351
Deferred consideration		522
Value Edge Research Services Private Limited [member]
Disclosure of detailed information about business combination [line items]
Purchase consideration			$ 18,265
Working capital adjustments			765
Contingent consideration			$ 5,112
Release of restricted cash, held in escrow					0	$ 0	$ 1,535	$ 1,535	$ 1,535
CEPROCS S.R.L. [member]
Disclosure of detailed information about business combination [line items]
Payment of Purchase consideration										$ 566
Goodwill										$ 14
Acquisition related costs					78
MOL Information Processing Services (I) Private Limited [Member]
Disclosure of detailed information about business combination [line items]
Payment of Purchase consideration					2,310
Goodwill					1,298
Purchase consideration	$ 2,958				2,958
Acquisition related costs					$ 62
Amount of Deferred Consideration	$ 1,054

Business Combinations - Purchas

Business Combinations - Purchase Price Allocation to Assets Acquired and Liabilities Assumed of MOL IPS (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Aug. 01, 2021	Mar. 31, 2021
Disclosure of detailed information about business combination [line items]
Goodwill on acquisition	$ 123,537		$ 123,979
MOL IPS [member]
Disclosure of detailed information about business combination [line items]
Total assets	3,981
Less: Total liabilities	(2,321)
Net assets acquired	1,660
Less: Purchase consideration	(2,958)	$ (2,958)
Goodwill on acquisition	$ 1,298

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Cash and cash equivalents [abstract]
Cash and bank balances		$ 78,578	$ 73,398
Short term deposits with banks	[1]	29,575	32,235
Total		$ 108,153	$ 105,633	$ 96,929	$ 85,444
[1]	Short-term deposits can be withdrawn by the Company at any time without prior notice and are readily convertible into known amounts of cash with an insignificant risk of changes in value.

Investments - Summary of Invest

Investments - Summary of Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Categories of financial assets [abstract]
Investments in marketable securities and mutual funds	$ 263,013	$ 250,852
Investment in fixed deposits	41,827	38,699
Current investments	211,398	203,676
Non-current investment	93,442	85,875
Total	$ 304,840	$ 289,551

Trade Receivables and Unbille_3

Trade Receivables and Unbilled Revenue, Net - Summary of Trade Receivables and Unbilled Revenue (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Mar. 31, 2021
Trade and other receivables [abstract]
Trade receivables and unbilled revenue	[1]	$ 189,952	$ 152,414
Less: Allowances for ECL		(2,398)	(2,624)
Total		187,554	149,790
Non-current trade receivables		0	269
Current Trade Receivables and Unbilled revenue	[1]	$ 187,554	$ 149,521
[1]	As at March 31, 2022 and March 31, 2021 unbilled revenue includes contract assets amounting to $246 and $191, respectively.

Trade Receivables and Unbille_4

Trade Receivables and Unbilled Revenue, Net - Summary of Trade Receivables and Unbilled Revenue (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of financial assets [line items]
Contract assets	$ 50,002	$ 34,889	$ 36,365
Unbilled revenue [member]
Disclosure of financial assets [line items]
Contract assets	$ 246	$ 191

Trade Receivables and Unbille_5

Trade Receivables and Unbilled Revenue, Net - Movement in Allowances for Expected Credit Losses (ECL) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of financial assets [line items]
Balance at the beginning of the year	$ 2,624
Balance at the end of the year	2,398	$ 2,624
Allowances for expected credit losses [member]
Disclosure of financial assets [line items]
Balance at the beginning of the year	2,624	1,590	$ 1,182
Charged to consolidated statement of income	1,504	1,971	1,316
Write-offs, net of collections	(1,308)	(589)	(299)
Reversals	(397)	(637)	(533)
Translation adjustment	(25)	289	(76)
Balance at the end of the year	$ 2,398	$ 2,624	$ 1,590

Prepayments and Other Assets -

Prepayments and Other Assets - Summary of Prepayment and Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Current:
Service tax and other tax receivables	$ 8,833	$ 5,997
Employee receivables	1,045	1,044
Advances to suppliers	2,987	2,667
Prepaid expenses	10,169	9,261
Other assets	5,788	4,242
Total	28,822	23,211
Non-current:
Deposits	11,263	10,508
Income tax assets	15,068	12,151
Service tax and other tax receivables	13,079	12,786
Other assets	4,865	4,587
Total	$ 44,275	$ 40,032

Goodwill - Summary of the Carry

Goodwill - Summary of the Carrying Value of Goodwill (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of reconciliation of changes in goodwill [line items]
Goodwill	$ 123,537	$ 123,979
Gross carrying value [member]
Disclosure of reconciliation of changes in goodwill [line items]
Goodwill	150,684	152,459	$ 146,824
Accumulated impairment [member]
Disclosure of reconciliation of changes in goodwill [line items]
Goodwill	$ (27,147)	$ (28,480)

Goodwill - Summary of Movement

Goodwill - Summary of Movement in Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of reconciliation of changes in goodwill [line items]
Beginning balance	$ 123,979
Impairment of goodwill recognized during the year	0	$ 0	$ (4,085)
Ending balance	123,537	123,979
Accumulated impairment [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning balance	28,480	25,520
Impairment of goodwill recognized during the year	0
Translation adjustment	(1,333)	2,960
Ending balance	27,147	28,480	25,520
Accumulated impairment [member] | WNS Global BPM [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning balance	0	0
Impairment of goodwill recognized during the year
Translation adjustment
Ending balance		0	0
Accumulated impairment [member] | WNS Auto Claims BPM [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning balance	28,480	25,520
Impairment of goodwill recognized during the year	0
Translation adjustment	(1,333)	2,960
Ending balance	27,147	28,480	25,520
Gross carrying value [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning balance	152,459	146,824
Goodwill arising on acquisitions	1,312
Translation adjustment	(3,087)	5,635
Ending balance	150,684	152,459	146,824
Gross carrying value [member] | WNS Global BPM [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning balance	123,979	121,304
Goodwill arising on acquisitions	1,312
Translation adjustment	(1,754)	2,675
Ending balance	123,537	123,979	121,304
Gross carrying value [member] | WNS Auto Claims BPM [member]
Disclosure of reconciliation of changes in goodwill [line items]
Beginning balance	28,480	25,520
Goodwill arising on acquisitions	0
Translation adjustment	(1,333)	2,960
Ending balance	$ 27,147	$ 28,480	$ 25,520

Goodwill - Carrying Value of Go

Goodwill - Carrying Value of Goodwill Allocated to Cash Generating Units ("CGU") (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Mar. 31, 2021
Disclosure of information for cash-generating units [line items]
Goodwill		$ 123,537	$ 123,979
Research and analytics [member]
Disclosure of information for cash-generating units [line items]
Goodwill		42,051	43,594
HealthHelp [member]
Disclosure of information for cash-generating units [line items]
Goodwill		39,082	39,082
Denali [member]
Disclosure of information for cash-generating units [line items]
Goodwill		29,542	29,542
South Africa [member]
Disclosure of information for cash-generating units [line items]
Goodwill		4,522	4,471
WNS Global BPM [member]
Disclosure of information for cash-generating units [line items]
Goodwill	[1]	4,934	3,717
Technology services [member]
Disclosure of information for cash-generating units [line items]
Goodwill		$ 3,406	$ 3,573
[1]	Excludes South Africa, Research and Analytics, Technology services, Denali and HealthHelp goodwill.

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of reconciliation of changes in goodwill [line items]
Estimated cash flows period	five years
Impairment charge	$ 0	$ 0	$ 4,085
WNS Auto Claims BPM [member]
Disclosure of reconciliation of changes in goodwill [line items]
Impairment charge			$ 4,085
Discount rate			14.50%
Recoverable amount of cash generating units	$ 33,592
WNS Auto Claims BPM [member] | Annual Growth Rate [member] | Bottom of range [member]
Disclosure of reconciliation of changes in goodwill [line items]
Growth rate	0.60%
WNS Auto Claims BPM [member] | Annual Growth Rate [member] | Top of range [member]
Disclosure of reconciliation of changes in goodwill [line items]
Growth rate	5.10%
WNS Auto Claims BPM [member] | Perpetual Growth Rate [member]
Disclosure of reconciliation of changes in goodwill [line items]
Growth rate	2.00%

Goodwill - Key Assumptions Used

Goodwill - Key Assumptions Used in Performing Impairment Test, by each CGU (Detail)		Mar. 31, 2022	Mar. 31, 2021
WNS Global BPM [member]
Disclosure of information for cash-generating units [line items]
Discount rate	[1]	14.90%	15.30%
Perpetual growth rate	[1]	3.00%	3.00%
South Africa [member]
Disclosure of information for cash-generating units [line items]
Discount rate		15.50%	16.20%
Perpetual growth rate		3.00%	3.00%
Denali Sourcing Services Inc. [member]
Disclosure of information for cash-generating units [line items]
Discount rate		11.70%	12.00%
Perpetual growth rate		2.50%	2.50%
Research and analytics [member]
Disclosure of information for cash-generating units [line items]
Discount rate		14.90%	15.30%
Perpetual growth rate		3.00%	3.00%
HealthHelp [member]
Disclosure of information for cash-generating units [line items]
Discount rate		11.70%	12.00%
Perpetual growth rate		2.50%	2.50%
Technology services [member]
Disclosure of information for cash-generating units [line items]
Discount rate		13.00%	14.00%
Perpetual growth rate		2.00%	2.00%
[1]	Excludes South Africa, Research and Analytics, Technology services, HealthHelp and Denali CGUs.

Intangible Assets - Change in C

Intangible Assets - Change in Carrying Value of Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of detailed information about intangible assets [line items]
Beginning balance	$ 65,141
Amortization	11,550	$ 13,722	$ 15,653
Ending balance	65,421	65,141
Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	355,323	341,207
Additions	12,246	7,544
On acquisitions (Refer Note 4(a), 4(b))	682
Translation adjustments	(5,620)	6,572
Ending balance	362,631	355,323	341,207
Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	290,182	271,107
Amortization	11,550	13,722
Translation adjustments	(4,522)	5,353
Ending balance	297,210	290,182	271,107
Customer contracts [member]
Disclosure of detailed information about intangible assets [line items]
Ending balance	393
Customer contracts [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	158,014	155,214
On acquisitions (Refer Note 4(a), 4(b))	536
Translation adjustments	(2,387)	2,800
Ending balance	156,163	158,014	155,214
Customer contracts [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	158,014	154,093
Amortization	133	1,123
Translation adjustments	(2,377)	2,798
Ending balance	155,770	158,014	154,093
Customer relationships [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	44,883
Ending balance	41,222	44,883
Customer relationships [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	121,622	120,427
Translation adjustments	(570)	1,195
Ending balance	121,052	121,622	120,427
Customer relationships [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	76,739	71,965
Amortization	3,645	3,631
Translation adjustments	(554)	1,143
Ending balance	79,830	76,739	71,965
Intellectual property rights [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	4,511	4,068
Translation adjustments	(199)	443
Ending balance	4,312	4,511	4,068
Intellectual property rights [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	4,511	4,068
Translation adjustments	(199)	443
Ending balance	4,312	4,511	4,068
Trade names [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	641	638
Translation adjustments	(3)	3
Ending balance	638	641	638
Trade names [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	641	638
Translation adjustments	(3)	3
Ending balance	638	641	638
Technology [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	2,757
Ending balance	1,982	2,757
Technology [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	5,987	5,950
Translation adjustments	(40)	37
Ending balance	5,947	5,987	5,950
Technology [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	3,230	2,440
Amortization	766	765
Translation adjustments	(31)	25
Ending balance	3,965	3,230	2,440
Leasehold benefits [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	1,835	1,835
Ending balance	1,835	1,835	1,835
Leasehold benefits [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	1,835	1,835
Ending balance	1,835	1,835	1,835
Covenant not-to-compete [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	9,161	9,060
Translation adjustments	(96)	101
Ending balance	9,065	9,161	9,060
Covenant not-to-compete [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	9,161	7,474
Amortization	0	1,587
Translation adjustments	(96)	100
Ending balance	9,065	9,161	7,474
Service mark [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	400
Ending balance	400	400
Service mark [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	400	400
Ending balance	400	400	400
Software [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	17,101
Ending balance	21,424	17,101
Software [member] | Gross carrying value [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	53,152	43,615
Additions	12,246	7,544
On acquisitions (Refer Note 4(a), 4(b))	146
Translation adjustments	(2,325)	1,993
Ending balance	63,219	53,152	43,615
Software [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about intangible assets [line items]
Beginning balance	36,051	28,594
Amortization	7,006	6,616
Translation adjustments	(1,262)	841
Ending balance	$ 41,795	$ 36,051	$ 28,594

Intangible Assets - Estimated R

Intangible Assets - Estimated Remaining Weighted Average Amortization Periods for Definite Lived Intangible Assets (Detail) - Remaining weighted average [member]	12 Months Ended
	Mar. 31, 2022
Customer contracts [member]
Disclosure of detailed information about intangible assets [line items]
Estimated remaining weighted average amortization periods	9 months
Customer relationships [member]
Disclosure of detailed information about intangible assets [line items]
Estimated remaining weighted average amortization periods	167 months
Technology [member]
Disclosure of detailed information about intangible assets [line items]
Estimated remaining weighted average amortization periods	34 months
Software [member]
Disclosure of detailed information about intangible assets [line items]
Estimated remaining weighted average amortization periods	16 months

Intangible Assets - Estimated A

Intangible Assets - Estimated Annual Amortization Expense (Detail) $ in Thousands	12 Months Ended
	Mar. 31, 2022USD ($)
Disclosure of intangible assets with indefinite useful life [line items]
Estimated annual amortization expense	$ 65,021	[1]
2023 [member]
Disclosure of intangible assets with indefinite useful life [line items]
Estimated annual amortization expense	13,207
2024 [member]
Disclosure of intangible assets with indefinite useful life [line items]
Estimated annual amortization expense	11,319
2025 [member]
Disclosure of intangible assets with indefinite useful life [line items]
Estimated annual amortization expense	8,102
2026 [member]
Disclosure of intangible assets with indefinite useful life [line items]
Estimated annual amortization expense	4,431
2027 [member]
Disclosure of intangible assets with indefinite useful life [line items]
Estimated annual amortization expense	3,272
Thereafter [member]
Disclosure of intangible assets with indefinite useful life [line items]
Estimated annual amortization expense	$ 24,690
[1]	Excludes service mark, as it has an indefinite useful life

Property and Equipment - Change

Property and Equipment - Changes in Carrying Value of Property and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	$ 52,272
Capital work-in-progress	3,073	$ 1,247
Ending balance	49,257	52,272
Gross carrying value [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	249,837	234,159
On acquisitions (Refer Note 4(a), 4(b))	445
Additions	18,763	16,305
Disposals/retirements	(5,756)	(12,325)
Translation adjustments	(9,994)	11,698
Ending balance	253,295	249,837
Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	198,812	180,126
Depreciation	21,790	21,480
Disposals/retirements	(5,649)	(11,896)
Translation adjustments	(7,842)	9,102
Ending balance	207,111	198,812
Buildings [member] | Gross carrying value [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	9,733	9,602
Translation adjustments	(142)	131
Ending balance	9,591	9,733
Buildings [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	5,945	5,385
Depreciation	483	484
Translation adjustments	(90)	76
Ending balance	6,338	5,945
Computers and software [member] | Gross carrying value [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	78,850	74,388
On acquisitions (Refer Note 4(a), 4(b))	217
Additions	13,966	9,618
Disposals/retirements	(1,901)	(9,044)
Translation adjustments	(3,558)	3,888
Ending balance	87,574	78,850
Computers and software [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	65,421	63,896
Depreciation	8,771	7,203
Disposals/retirements	(1,864)	(9,003)
Translation adjustments	(2,754)	3,325
Ending balance	69,574	65,421
Furniture, fixtures and office equipment [member] | Gross carrying value [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	84,335	78,403
On acquisitions (Refer Note 4(a), 4(b))	102
Additions	2,449	4,096
Disposals/retirements	(1,016)	(1,988)
Translation adjustments	(3,228)	3,824
Ending balance	82,642	84,335
Furniture, fixtures and office equipment [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	68,141	60,044
Depreciation	6,412	6,995
Disposals/retirements	(988)	(1,855)
Translation adjustments	(2,599)	2,957
Ending balance	70,966	68,141
Vehicles [member] | Gross carrying value [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	876	838
On acquisitions (Refer Note 4(a), 4(b))	10
Disposals/retirements	(74)
Translation adjustments	(28)	38
Ending balance	784	876
Vehicles [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	737	514
Depreciation	120	193
Disposals/retirements	(70)
Translation adjustments	(23)	30
Ending balance	764	737
Leasehold improvements [member] | Gross carrying value [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	76,043	70,928
On acquisitions (Refer Note 4(a), 4(b))	116
Additions	2,348	2,591
Disposals/retirements	(2,765)	(1,293)
Translation adjustments	(3,038)	3,817
Ending balance	72,704	76,043
Leasehold improvements [member] | Accumulated depreciation and amortization [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	58,568	50,287
Depreciation	6,004	6,605
Disposals/retirements	(2,727)	(1,038)
Translation adjustments	(2,376)	2,714
Ending balance	$ 59,469	$ 58,568

Leases - Summary of Changes in

Leases - Summary of Changes in the Carrying Value of ROU Asset (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	$ 166,766
Ending balance	142,623	$ 166,766
Premises [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	166,581
Ending balance	142,351	166,581
Computers [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	4
Ending balance	0	4
Equipment [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	8
Ending balance	5	8
Motor vehicles [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	173
Ending balance	267	173
Gross carrying amount [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	219,781	184,420
Additions	5,836	26,454
On acquisition (Refer Note 4(b))	1,528
Terminations/modifications	3,174	(1,015)
Translation adjustments	(9,257)	9,922
Ending balance	221,062	219,781
Gross carrying amount [member] | Premises [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	219,078	183,839
Additions	5,620	26,336
On acquisition (Refer Note 4(b))	1,528
Terminations/modifications	3,174	(985)
Translation adjustments	(9,215)	9,888
Ending balance	220,185	219,078
Gross carrying amount [member] | Computers [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	39	34
On acquisition (Refer Note 4(b))	0
Translation adjustments	1	5
Ending balance	40	39
Gross carrying amount [member] | Equipment [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	25	32
On acquisition (Refer Note 4(b))	0
Terminations/modifications	0	(8)
Translation adjustments	(1)	1
Ending balance	24	25
Gross carrying amount [member] | Motor vehicles [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	639	515
Additions	216	118
On acquisition (Refer Note 4(b))	0
Terminations/modifications	0	(22)
Translation adjustments	(42)	28
Ending balance	813	639
Accumulated depreciation [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	53,015	25,322
Depreciation	28,213	27,443
Terminations/modifications	(47)	(1,517)
Translation adjustments	(2,742)	1,767
Ending balance	78,439	53,015
Accumulated depreciation [member] | Premises [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	52,497	25,015
Depreciation	28,100	27,236
Terminations/modifications	(47)	(1,503)
Translation adjustments	(2,716)	1,749
Ending balance	77,834	52,497
Accumulated depreciation [member] | Computers [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	35	16
Depreciation	4	16
Translation adjustments	1	3
Ending balance	40	35
Accumulated depreciation [member] | Equipment [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	17	12
Depreciation	3	10
Terminations/modifications	0	(5)
Translation adjustments	(1)
Ending balance	19	17
Accumulated depreciation [member] | Motor vehicles [member]
Disclosure of quantitative information about right-of-use assets [line items]
Beginning balance	466	279
Depreciation	106	181
Terminations/modifications	0	(9)
Translation adjustments	(26)	15
Ending balance	$ 546	$ 466

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of quantitative information about right-of-use assets [line items]
Rental expense charged for short-term leases	$ 1,125	$ 857
Rental expense charged for low value leases	65	675
Rental expense charged for variable leases	1,599	1,730
Rent Concessions On Lease Liability	21	416
Future cash outflows for leases not yet commenced	$ 82,013	$ 0

Leases - Summary of Movement in

Leases - Summary of Movement in Lease Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure Of Movements In Lease Liabilities [Line Items]
Opening balance	$ 191,907	$ 178,892
Interest payment on lease liabilities	(12,657)	(13,689)	$ (14,782)
Rent concessions	21	416
Closing balance	166,994	191,907	$ 178,892
Cash Out flows [Member]
Disclosure Of Movements In Lease Liabilities [Line Items]
Principal payment of lease liabilities	(26,235)	(23,073)
Interest payment on lease liabilities	(12,826)	(13,442)
Non Cash Adjustments [Member]
Disclosure Of Movements In Lease Liabilities [Line Items]
On acquisition (Refer Note 4(b))	1,521	0
Additions	5,403	25,506
Terminations/modifications	2,282	1,313
Interest accrued	12,657	13,689
Rent concessions	(21)	(416)
Translation adjustments	$ (7,694)	$ 9,438

Leases - Summary of Contractual

Leases - Summary of Contractual Maturities of Lease Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of quantitative information about right-of-use assets [line items]
Minimum lease payments	$ 216,190	$ 256,305
Less than 1 Year [member]
Disclosure of quantitative information about right-of-use assets [line items]
Minimum lease payments	37,330	39,591
1-3 years [member]
Disclosure of quantitative information about right-of-use assets [line items]
Minimum lease payments	67,177	73,833
3-5 years [member]
Disclosure of quantitative information about right-of-use assets [line items]
Minimum lease payments	49,449	63,462
More than 5 years [member]
Disclosure of quantitative information about right-of-use assets [line items]
Minimum lease payments	$ 62,234	$ 79,419

Loans and Borrowings - Summary

Loans and Borrowings - Summary of Long-term Loans and Borrowings (Detail) - USD ($) $ in Thousands		Mar. 01, 2017	Mar. 31, 2022	Mar. 31, 2021		Mar. 31, 2017
Disclosure of detailed information about borrowings [line items]
Total long term debt	[1]		$ 0	$ 16,800	[2]
Less: Debt issuance cost			0	(52)
Total long term debt			0	16,748
Current portion of long-term debt			0	16,748
Long-term debt			$ 0	0
Long term loan to finance acquisition of health help [member]
Disclosure of detailed information about borrowings [line items]
Interest rate basis		3M USD Libor	3M USD LIBOR
Adjustment to interest rate basis			0.95%			0.95%
Final maturity (fiscal year)			2022
Total long term debt			$ 0	$ 16,800
[1]	Before netting off debt issuance cost of $Nil and $52 as at March 31, 2022 and March 31, 2021, respectively.
[2]	Excluding non-financial asset (unamortized debt issuance cost) $52.

Loans and Borrowings - Addition

Loans and Borrowings - Additional Information (Detail) - USD ($) $ in Thousands

Mar. 14, 2022

Sep. 14, 2021

Mar. 15, 2021

Sep. 14, 2020

Mar. 16, 2020

Sep. 16, 2019

Mar. 14, 2019

Sep. 17, 2018

Mar. 14, 2018

Sep. 14, 2017

Mar. 01, 2017

Mar. 31, 2022

Mar. 31, 2017

Disclosure of detailed information about borrowings [line items]

Line of credit

$ 96,149

Line of credit [member] | UK [member]

Disclosure of detailed information about borrowings [line items]

Line of credit

12,980

Line of credit [member] | South Africa [member]

Disclosure of detailed information about borrowings [line items]

Line of credit

2,054

Line of credit [member] | North America [Member]

Disclosure of detailed information about borrowings [line items]

Line of credit

10,000

Line of credit [member] | WNS Global Services Private Limited [member]

Disclosure of detailed information about borrowings [line items]

Line of credit

$ 71,115

Long term loan to finance acquisition of health help [member]

Disclosure of detailed information about borrowings [line items]

Term loan facility tenure

5 years

Term loan facility amount

$ 84,000

Interest rate basis

3M USD Libor

3M USD LIBOR

Adjustment to interest rate basis

0.95%

0.95%

Repayment of installment

$ 8,400

$ 8,400

$ 8,400

$ 8,400

$ 8,400

$ 8,400

$ 8,400

$ 8,400

$ 8,400

$ 8,400

Long term loan to finance acquisition of health help [member] | Fixed interest rate [member] | Interest rate swap [member]

Disclosure of detailed information about borrowings [line items]

Fixed rate

1.9635%

Financial Instruments - Carryin

Financial Instruments - Carrying Value and Fair Value of Financial Instruments by Class (Detail) - USD ($) $ in Thousands		Mar. 31, 2022		Mar. 31, 2021		Mar. 31, 2020	Mar. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents		$ 108,153		$ 105,633		$ 96,929	$ 85,444
Investment in fixed deposits		41,827		38,699
Investments in marketable securities and mutual funds		263,013		250,852
Trade receivables		100,522		83,387
Unbilled revenue		86,786	[1]	66,212	[2]
Funds held for clients		11,643		12,139
Prepayments and other assets		6,283	[3]	4,757	[4]
Other non-current assets		13,509	[5]	13,790	[6]
Derivative assets		13,600		9,723
Total carrying value		645,336		585,192
Trade payables		27,829		28,015
Long-term debt (includes current portion)	[7]	0		16,800	[8]
Other employee obligations		95,098	[9]	74,511	[10]
Provision and accrued expenses		36,752		23,933
Lease liabilities		166,994		191,907		$ 178,892
Other liabilities		2,015	[11]	1,803	[12]
Derivative liabilities		6,873		6,528
Total carrying value		335,561		343,497
Financial liabilities at amortized cost [member]
Disclosure of detailed information about financial instruments [line items]
Trade payables		27,829		28,015
Long-term debt (includes current portion)	[8]			16,800
Other employee obligations		95,098	[9]	74,511	[10]
Provision and accrued expenses		36,752		23,933
Lease liabilities		166,994		191,907
Other liabilities		2,015	[11]	1,803	[12]
Total carrying value		328,688		336,969
Fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities		2,295		1,068
Total carrying value		2,295		1,068
Financial liabilities at FVOCI [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities		4,578		5,460
Total carrying value		4,578		5,460
Financial liabilities at fair value, class [member]
Disclosure of detailed information about financial instruments [line items]
Trade payables		27,829		28,015
Long-term debt (includes current portion)	[8]			16,800
Other employee obligations		95,098	[9]	74,511	[10]
Provision and accrued expenses		36,752		23,933
Lease liabilities		166,994		191,907
Other liabilities		2,015	[11]	1,803	[12]
Derivative liabilities		6,873		6,528
Total carrying value		335,561		343,497
Financial assets at amortized cost [member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents		108,153		105,633
Investment in fixed deposits		41,827		38,699
Trade receivables		100,522		83,387
Unbilled revenue		86,786	[1]	66,212	[2]
Funds held for clients		11,643		12,139
Prepayments and other assets		6,283	[3]	4,757	[4]
Other non-current assets		13,509	[5]	13,790	[6]
Total carrying value		368,723		324,617
Fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [line items]
Investments in marketable securities and mutual funds		263,013		250,852
Derivative assets		556		2,619
Total carrying value		263,569		253,471
Financial assets at FVOCI [member]
Disclosure of detailed information about financial instruments [line items]
Derivative assets		13,044		7,104
Total carrying value		13,044		7,104
Financial assets at fair value, class [member]
Disclosure of detailed information about financial instruments [line items]
Cash and cash equivalents		108,153		105,633
Investment in fixed deposits		41,827		38,699
Investments in marketable securities and mutual funds		263,013		250,852
Trade receivables		100,522		83,387
Unbilled revenue		86,786	[1]	66,212	[2]
Funds held for clients		11,643		12,139
Prepayments and other assets		6,283	[3]	4,757	[4]
Other non-current assets		13,509	[5]	13,790	[6]
Derivative assets		13,600		9,723
Total carrying value		$ 645,336		$ 585,192
[1]	Excluding non-financial assets $246.
[2]	Excluding non-financial assets $191.
[3]	Excluding non-financial assets $22,539.
[4]	Excluding non-financial assets $18,454.
[5]	Excluding non-financial assets $30,766.
[6]	Excluding non-financial assets $26,241.
[7]	Before netting off debt issuance cost of $Nil and $52 as at March 31, 2022 and March 31, 2021, respectively.
[8]	Excluding non-financial asset (unamortized debt issuance cost) $52.
[9]	Excluding non-financial liabilities $26,908
[10]	Excluding non-financial liabilities $27,664.
[11]	Excluding non-financial liabilities $26,908
[12]	Excluding non-financial liabilities $9,900.

Financial Instruments - Carry_2

Financial Instruments - Carrying Value and Fair Value of Financial Instruments by Class (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022		Mar. 31, 2021
Disclosure of detailed information about financial instruments [line items]
Unbilled Revenue	$ 86,786	[1]	$ 66,212	[2]
Prepayments and other assets	28,822		23,211
Other non-current assets	44,275		40,032
Unamortised debt issuance cost	0		52
Other employee obligations	105,768		82,586
Other liabilities	11,351		11,492
Non-financial instruments [member]
Disclosure of detailed information about financial instruments [line items]
Unbilled Revenue	246		191
Prepayments and other assets	22,539		18,454
Other non-current assets	30,766		26,241
Unamortised debt issuance cost			52
Other employee obligations	26,908		27,664
Other liabilities	$ 9,414		$ 9,900
[1]	Excluding non-financial assets $246.
[2]	Excluding non-financial assets $191.

Financial Instruments - Financi

Financial Instruments - Financial Assets and Liabilities Subject to Offsetting, Enforceable Master Netting Arrangements or Similar Agreements (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure of offsetting of financial assets liabilities [Line Items]
Gross amounts of recognized financial assets	$ 13,600	$ 9,723
Net amounts of financial assets presented in the statement of financial position	13,600	9,723
Related amount not set off in financial instruments, Financial instruments, financial assets	(646)	(4,392)
Net Amount, financial assets	12,954	5,331
Gross amounts of recognized financial liabilities	6,873	6,528
Net amounts of financial liabilities presented in the statement of financial position	6,873	6,528
Related amount not set off in financial instruments, Financial instruments, financial liabilities	(646)	(4,392)
Net Amount, financial liabilities	6,227	2,136
Derivatives [member]
Disclosure of offsetting of financial assets liabilities [Line Items]
Gross amounts of recognized financial assets	13,600	9,723
Net amounts of financial assets presented in the statement of financial position	13,600	9,723
Related amount not set off in financial instruments, Financial instruments, financial assets	(646)	(4,392)
Net Amount, financial assets	12,954	5,331
Gross amounts of recognized financial liabilities	6,873	6,528
Net amounts of financial liabilities presented in the statement of financial position	6,873	6,528
Related amount not set off in financial instruments, Financial instruments, financial liabilities	(646)	(4,392)
Net Amount, financial liabilities	$ 6,227	$ 2,136

Financial Instruments - Assets

Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure of detailed information about financial instruments [line items]
Derivative assets	$ 13,600	$ 9,723
Investments in marketable securities and mutual funds	263,013	250,852
Total assets	645,336	585,192
Derivative liabilities	6,873	6,528
Total liabilities	335,561	343,497
Fair value on recurring basis [member]
Disclosure of detailed information about financial instruments [line items]
Total assets	276,613	260,575
Total liabilities	6,873	6,528
Fair value on recurring basis [member] | Fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [line items]
Investments in marketable securities and mutual funds	263,013	250,852
Fair value on recurring basis [member] | Fair value through profit or loss [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative assets	556	2,619
Fair value on recurring basis [member] | Financial assets at FVOCI [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative assets	13,044	7,104
Fair value on recurring basis [member] | Fair value through profit or loss [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities	2,295	1,068
Fair value on recurring basis [member] | Financial liabilities at FVOCI [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities	4,578	5,234
Fair value on recurring basis [member] | Financial liabilities at FVOCI [member] | Interest rate swap contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities	0	226
Fair value on recurring basis [member] | Level 1 [member]
Disclosure of detailed information about financial instruments [line items]
Total assets	262,202	250,439
Fair value on recurring basis [member] | Level 1 [member] | Fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [line items]
Investments in marketable securities and mutual funds	262,602	250,439
Fair value on recurring basis [member] | Level 2 [member]
Disclosure of detailed information about financial instruments [line items]
Total assets	14,011	10,136
Total liabilities	6,873	6,528
Fair value on recurring basis [member] | Level 2 [member] | Fair value through profit or loss [member]
Disclosure of detailed information about financial instruments [line items]
Investments in marketable securities and mutual funds	411	413
Fair value on recurring basis [member] | Level 2 [member] | Fair value through profit or loss [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative assets	556	2,619
Fair value on recurring basis [member] | Level 2 [member] | Financial assets at FVOCI [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative assets	13,044	7,104
Fair value on recurring basis [member] | Level 2 [member] | Fair value through profit or loss [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities	2,295	1,068
Fair value on recurring basis [member] | Level 2 [member] | Financial liabilities at FVOCI [member] | Foreign exchange contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities	4,578	5,234
Fair value on recurring basis [member] | Level 2 [member] | Financial liabilities at FVOCI [member] | Interest rate swap contracts [member]
Disclosure of detailed information about financial instruments [line items]
Derivative liabilities	$ 0	$ 226

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of detailed information about financial instruments [line items]
Transfers between Level 1 and Level 2 fair value measurements, financial assets	$ 0	$ 0
Transfers between Level 1 and Level 2 fair value measurements, financial liabilities	0	0
Transfers between Level 2 and Level 1 fair value measurements, financial assets	0	0
Transfers between Level 2 and Level 1 fair value measurements, financial liabilities	0	0
Transfers into Level 3 fair value measurements, financial assets	0	0
Transfers into Level 3 fair value measurements, financial liabilities	0	0
Transfers out of Level 3 fair value measurements, financial assets	0	0
Transfers out of Level 3 fair value measurements, financial liabilities	0	0
Gain (loss) recognized due to discontinuation of cash flow hedge accounting	93,000	(222,000)	$ 543,000
Outstanding swap agreement	0
Trade receivables	100,522,000	83,118,000
Unbilled revenue	87,032,000	66,403,000
Unused lines of credit	$ 96,149,000
Level 3 [member] | Non-recurring fair value measurement [member]
Disclosure of detailed information about financial instruments [line items]
Fair value measurement for Auto Claim BPM CGU			34,086,000
Disposal cost			$ 494,000
Currency risk [member]
Disclosure of detailed information about financial instruments [line items]
Rate of appreciation or depreciation of the foreign currencies against the functional currency of the company	10.00%
Effect on statement of profit before tax from operating activities due to appreciation or depreciation of the foreign currencies against the functional currency of the company	$ 5,876,000
Currency risk [member] | UK Pound Sterling [member]
Disclosure of detailed information about financial instruments [line items]
Rate of appreciation or depreciation of the foreign currencies against the functional currency of the company	10.00%
Effect on statement of profit before tax from operating activities due to appreciation or depreciation of the foreign currencies against the functional currency of the company	$ 32,736,000
Currency risk [member] | Indian Rupees [member]
Disclosure of detailed information about financial instruments [line items]
Rate of appreciation or depreciation of the foreign currencies against the functional currency of the company	10.00%
Effect on statement of profit before tax from operating activities due to appreciation or depreciation of the foreign currencies against the functional currency of the company	$ 40,997,000
Credit risk [member]
Disclosure of detailed information about financial instruments [line items]
Trade receivables	100,522,000	83,387,000
Unbilled revenue	87,032,000	$ 66,403,000
Interest rate swap contracts [member]
Disclosure of detailed information about financial instruments [line items]
Gain (loss) on cash flow hedges, expected to be reclassified from other comprehensive income into profit (loss)	$ 2,135,000
Reclassification period for cash flow hedges	24 months

Financial Instruments - Notiona

Financial Instruments - Notional Values of Outstanding Foreign Exchange Forward Contracts, Foreign Exchange Option Contracts and Interest Rate Swap Contracts (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Forward contracts (sell) [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	$ 485,164	$ 442,125
Forward contracts (sell) [member] | US Dollars [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	316,651	260,999
Forward contracts (sell) [member] | Pound Sterling [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	99,006	104,638
Forward contracts (sell) [member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	21,811	26,395
Forward contracts (sell) [member] | Australian Dollars [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	27,290	29,076
Forward contracts (sell) [member] | Others Currencies [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	20,406	21,017
Option contracts (sell) [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	357,823	308,070
Option contracts (sell) [member] | US Dollars [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	204,773	137,687
Option contracts (sell) [member] | Pound Sterling [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	88,899	92,159
Option contracts (sell) [member] | Euro [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	26,147	33,202
Option contracts (sell) [member] | Australian Dollars [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount	$ 38,004	45,022
Interest rate swap contracts [member] | US Dollars [member]
Disclosure of detailed information about financial instruments [line items]
Derivative, notional amount		$ 16,800

Financial Instruments - Gain_(L

Financial Instruments - Gain/(Loss) Reclassified from Other Comprehensive Income into Consolidated Statement of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of detailed information about financial instruments [line items]
Changes in fair value of cash flow hedges reclassified to consolidated statement of income	$ 3,327	$ 3,555	$ 13,409
Income tax related to amounts reclassified into consolidated statement of income	(1,150)	425	(1,947)
Total	2,177	3,980	11,462
Revenue [member]
Disclosure of detailed information about financial instruments [line items]
Changes in fair value of cash flow hedges reclassified to consolidated statement of income	3,451	4,237	12,695
Foreign exchange gain/(loss), net [member]
Disclosure of detailed information about financial instruments [line items]
Changes in fair value of cash flow hedges reclassified to consolidated statement of income	93	(222)	543
Finance expense [member]
Disclosure of detailed information about financial instruments [line items]
Changes in fair value of cash flow hedges reclassified to consolidated statement of income	$ (217)	$ (460)	$ 171

Financial Instruments - Foreign

Financial Instruments - Foreign Currency Risk from Non-derivative Financial Instruments (Detail) - Currency risk [member] - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure of nature and extent of risks arising from financial instruments [line items]
Cash and cash equivalents	$ 6,374	$ 5,956
Investment	600
Trade receivables	173,998	173,310
Unbilled revenue	16,406	12,069
Prepayments and other current assets	574	252
Other non-current assets	19	19
Trade payables	(135,323)	(163,409)
Provisions and accrued expenses	(6,150)	(5,591)
Pension and other employee obligations	(1,236)	(678)
Lease liabilities	(4,763)	(3,687)
Other liabilities	(16)	(19)
Net assets/ (liabilities)	50,483	18,222
US Dollars [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Cash and cash equivalents	3,412	2,739
Investment	600
Trade receivables	127,640	116,135
Unbilled revenue	7,105	4,569
Prepayments and other current assets	205	108
Other non-current assets	3	3
Trade payables	(33,849)	(44,492)
Provisions and accrued expenses	(4,493)	(3,886)
Pension and other employee obligations		(302)
Other liabilities		(1)
Net assets/ (liabilities)	100,623	74,873
UK Pound Sterling [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Cash and cash equivalents	1,813	1,818
Trade receivables	22,934	34,041
Unbilled revenue	4,460	3,954
Prepayments and other current assets	66	44
Trade payables	(74,701)	(91,359)
Provisions and accrued expenses	(1,084)	(1,035)
Pension and other employee obligations	(794)
Other liabilities	(14)	(7)
Net assets/ (liabilities)	(47,320)	(52,544)
Indian Rupees [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Trade receivables	1,363	1,269
Prepayments and other current assets	55	57
Trade payables	(5,576)	(5,770)
Provisions and accrued expenses	(56)
Net assets/ (liabilities)	(4,214)	(4,444)
Australian Dollars [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Cash and cash equivalents	54	61
Trade receivables	7,366	7,411
Prepayments and other current assets	2
Trade payables	(103)
Provisions and accrued expenses		(83)
Other liabilities		(2)
Net assets/ (liabilities)	7,319	7,387
Euro [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Cash and cash equivalents	899	1,024
Trade receivables	11,631	10,911
Unbilled revenue	4,304	3,271
Prepayments and other current assets	246	43
Trade payables	(20,627)	(20,540)
Provisions and accrued expenses	(446)	(587)
Pension and other employee obligations	(1)	(29)
Lease liabilities	(4,736)	(3,635)
Other liabilities	(2)	(2)
Net assets/ (liabilities)	(8,732)	(9,544)
Others Currencies [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Cash and cash equivalents	196	314
Trade receivables	3,064	3,543
Unbilled revenue	537	275
Other non-current assets	16	16
Trade payables	(467)	(1,248)
Provisions and accrued expenses	(71)
Pension and other employee obligations	(441)	(347)
Lease liabilities	(27)	(52)
Other liabilities		(7)
Net assets/ (liabilities)	$ 2,807	$ 2,494

Financial Instruments - Percent

Financial Instruments - Percentage of Revenue Generated from Top Customer and Top Five Customers (Detail)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Top customer [member]
Disclosure of major customers [line items]
Percentage of revenue generated from customers	7.30%	8.10%	6.90%
Top five customers [Member]
Disclosure of major customers [line items]
Percentage of revenue generated from customers	27.10%	26.80%	25.10%

Financial Instruments - Contrac

Financial Instruments - Contractual Maturities of Financial Liabilities (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Mar. 31, 2021
Disclosure of maturity analysis for financial liabilities [Line Items]
Long-term debt (includes current portion)	[1]		$ 16,800
Trade payables		$ 27,829	28,015
Provisions and accrued expenses		36,752	23,933
Other liabilities		2,015	1,803
Other employee obligations		95,098	74,511
Derivative financial instruments		6,873	6,528
Total	[2],[3]	168,567	151,590
Less than 1 Year [member]
Disclosure of maturity analysis for financial liabilities [Line Items]
Long-term debt (includes current portion)	[1]		16,800
Trade payables		27,829	28,015
Provisions and accrued expenses		36,752	23,933
Other liabilities		2,015	1,803
Other employee obligations		95,098	74,511
Derivative financial instruments		6,042	4,491
Total	[2],[3]	167,736	149,553
1-2 years [member]
Disclosure of maturity analysis for financial liabilities [Line Items]
Long-term debt (includes current portion)	[1]
Derivative financial instruments		831	2,037
Total	[2],[3]	831	2,037
2-5 years [member]
Disclosure of maturity analysis for financial liabilities [Line Items]
Long-term debt (includes current portion)	[1]
Total	[2],[3]
[1]	Before netting off debt issuance cost of $52.
[2]	For contractual maturities of lease liabilities refer note 12.
[3]	Non-financial liabilities are explained in the financial instruments categories table above.

Financial Instruments - Contr_2

Financial Instruments - Contractual Maturities of Financial Liabilities (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure Of Maturity Analysis For Financial Liabilities [abstract]
Unamortised debt issuance cost	$ 0	$ 52

Financial Instruments - Summary

Financial Instruments - Summary of Net Cash Position (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Mar. 31, 2021		Mar. 31, 2020	Mar. 31, 2019
Disclosure of detailed information about financial instruments [abstract]
Cash and cash equivalents		$ 108,153	$ 105,633		$ 96,929	$ 85,444
Investments		304,840	289,551
Long-term debt (includes current portion)	[1]	0	(16,800)	[2]
Net cash position		$ 412,993	$ 378,384
[1]	Before netting off debt issuance cost of $Nil and $52 as at March 31, 2022 and March 31, 2021, respectively.
[2]	Excluding non-financial asset (unamortized debt issuance cost) $52.

Financial Instruments - Summa_2

Financial Instruments - Summary of Net Cash Position (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure of detailed information about financial instruments [abstract]
Unamortized debt issuance cost	$ 0	$ 52

Pension and Other Employee Ob_3

Pension and Other Employee Obligations - Summary of Pension and Other Employee Obligations (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Current:
Salaries and bonus	$ 93,210	$ 72,314
Pension	1,365	115
Withholding taxes on salary and statutory payables	11,193	10,157
Total	105,768	82,586
Non-current:
Pension and other obligations	16,238	19,589
Total	$ 16,238	$ 19,589

Pension and Other Employee Ob_4

Pension and Other Employee Obligations - Summary of Employee Benefits Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of employee benefit expenses [Line Items]
Salaries and bonus	$ 608,064	$ 498,431	$ 487,246
Employee benefit plans: Defined contribution plan	15,296	12,648	12,675
Employee benefit plans: Defined benefit plan	4,339	2,839	2,634
Share-based compensation expense (Refer Note 24)	44,165	38,230	37,520
Employee benefit costs	671,864	552,148	540,075
Cost of revenue [member]
Disclosure of employee benefit expenses [Line Items]
Share-based compensation expense (Refer Note 24)	5,155	4,890	4,589
Employee benefit costs	503,748	404,431	399,441
Selling and marketing expenses [member]
Disclosure of employee benefit expenses [Line Items]
Share-based compensation expense (Refer Note 24)	4,948	4,327	4,789
Employee benefit costs	46,614	43,601	40,816
General and administrative expenses [member]
Disclosure of employee benefit expenses [Line Items]
Share-based compensation expense (Refer Note 24)	34,062	29,013	28,142
Employee benefit costs	$ 121,502	$ 104,116	$ 99,818

Pension and Other Employee Ob_5

Pension and Other Employee Obligations - Contributions to Defined Contribution Plans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of geographical areas [Line Items]
Contributions to defined contribution plans	$ 15,296	$ 12,648	$ 12,675
India [member]
Disclosure of geographical areas [Line Items]
Contributions to defined contribution plans	10,758	8,681	8,772
USA [member]
Disclosure of geographical areas [Line Items]
Contributions to defined contribution plans	2,110	1,770	1,548
UK [member]
Disclosure of geographical areas [Line Items]
Contributions to defined contribution plans	825	898	892
South Africa [member]
Disclosure of geographical areas [Line Items]
Contributions to defined contribution plans	801	596	789
Sri Lanka [member]
Disclosure of geographical areas [Line Items]
Contributions to defined contribution plans	567	512	480
Philippines [member]
Disclosure of geographical areas [Line Items]
Contributions to defined contribution plans	$ 235	$ 191	$ 194

Pension and Other Employee Ob_6

Pension and Other Employee Obligations - Summary of Net Periodic Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of defined benefit plans [abstract]
Service cost	$ 3,368	$ 2,047	$ 1,915
Interest on the net defined benefit liability	971	792	719
Net gratuity cost	$ 4,339	$ 2,839	$ 2,634

Pension and Other Employee Ob_7

Pension and Other Employee Obligations - Summary of Net Defined Benefit Liability (Asset) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of net defined benefit liability (asset) [line items]
Service cost	$ 3,368	$ 2,047	$ 1,915
Interest cost	971	792	719
Accrued pension liability
Current	1,365	115
Non-current	14,350	15,791
Net amount recognized	15,715	15,906
Fair value of plan assets	(2,745)	(1,314)
Net surplus (deficit) in plan	$ 15,290	$ 15,064
Weighted average duration of defined benefit obligation (both funded and unfunded)	5 years 1 month 6 days	8 years 10 months 24 days
Benefit obligations [member]
Disclosure of net defined benefit liability (asset) [line items]
Beginning of the year	$ 17,220	$ 13,524
Foreign currency translation	(790)	441
Service cost	3,368	2,047
Interest cost	1,097	869
Benefits paid	(2,374)	(1,116)
Business combinations	1,223
Actuarial (gain)/loss from changes in demographic assumptions	(1,334)	1,061
Actuarial (gain)/loss from changes in financial assumptions	238	341
Actuarial (gain)/loss from actual experience compared to assumptions	(188)	53
End of the year	18,460	17,220	13,524
Plan assets [member]
Disclosure of net defined benefit liability (asset) [line items]
Beginning of the year	1,314	1,146
Foreign currency translation	(51)	40
Expected return on plan assets	126	77
Actual contributions	2,415	1,031
Benefits paid	(2,260)	(1,023)
Business combinations	1,191
Actuarial (gain)/loss	10	43
End of the year	2,745	1,314	$ 1,146
Present value of funded defined benefit obligation [member]
Accrued pension liability
Present value of defined benefit obligation	18,035	16,378
Present value of unfunded defined benefit obligation [member]
Accrued pension liability
Present value of defined benefit obligation	$ 425	$ 842

Pension and Other Employee Ob_8

Pension and Other Employee Obligations - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of defined benefit plans [line items]
Net amount recognized relating to defined benefit plan	$ 15,715	$ 15,906
Fair value of plan assets	(2,745)	(1,314)
Expected contributions for the year ending March 31, 2023	3,029
Life Insurance Corporation of India [member]
Disclosure of defined benefit plans [line items]
Fair value of plan assets	1,162	4
Aviva Life Insurance Company Private Limited [member]
Disclosure of defined benefit plans [line items]
Fair value of plan assets	$ 1,583	1,310
Unquoted government securities [member] | Life Insurance Corporation of India [member]
Disclosure of defined benefit plans [line items]
Fund assets, investment percentage	40.00%
Unquoted government securities [member] | Aviva Life Insurance Company Private Limited [member]
Disclosure of defined benefit plans [line items]
Fund assets, investment percentage	77.00%
Money market instruments [member] | Life Insurance Corporation of India [member]
Disclosure of defined benefit plans [line items]
Fund assets, investment percentage	60.00%
Money market instruments [member] | Aviva Life Insurance Company Private Limited [member]
Disclosure of defined benefit plans [line items]
Fund assets, investment percentage	23.00%
Discount rate [member]
Disclosure of defined benefit plans [line items]
Possible change in discount rates within a 12-month period	up to 1%
India [member]
Disclosure of defined benefit plans [line items]
Net amount recognized relating to defined benefit plan	$ 15,336	15,131
Philippines [member]
Disclosure of defined benefit plans [line items]
Net amount recognized relating to defined benefit plan	64	95
Sri Lanka [member]
Disclosure of defined benefit plans [line items]
Net amount recognized relating to defined benefit plan	$ 315	$ 680

Pension and Other Employee Ob_9

Pension and Other Employee Obligations - Actuarial Assumptions For Gratuity Plans (Detail)	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of defined benefit plans [line items]
Expected rate of return on plan assets		6.40%	6.60%
Bottom of range [member]
Disclosure of defined benefit plans [line items]
Rate of increase in compensation level	8.00%	7.00%	7.00%
Expected rate of return on plan assets	6.50%
Top of range [member]
Disclosure of defined benefit plans [line items]
Rate of increase in compensation level	10.00%	8.00%	8.00%
Expected rate of return on plan assets	6.60%
India [member]
Disclosure of defined benefit plans [line items]
Discount rate		6.40%
India [member] | Bottom of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	6.20%		6.30%
India [member] | Top of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	6.60%		6.60%
Philippines [member]
Disclosure of defined benefit plans [line items]
Discount rate	1.70%	3.10%	3.70%
Sri Lanka [member]
Disclosure of defined benefit plans [line items]
Discount rate	16.40%	8.10%	9.80%

Pension and Other Employee O_10

Pension and Other Employee Obligations - Sensitivity of Defined Benefit Obligation to a Change in Each Significant Actuarial Assumption (Detail)	Mar. 31, 2022
India [member] | Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity of defined benefit obligation due to a possible increase in discount rate by 1%	(4.70%)
Sensitivity of defined benefit obligation due to a possible decrease in discount rate by 1%	5.20%
India [member] | Salary escalation [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity of defined benefit obligation due to a possible increase in discount rate by 1%	3.70%
Sensitivity of defined benefit obligation due to a possible decrease in discount rate by 1%	(3.50%)
Philippines [member] | Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity of defined benefit obligation due to a possible increase in discount rate by 1%	(1.10%)
Sensitivity of defined benefit obligation due to a possible decrease in discount rate by 1%	1.10%
Philippines [member] | Salary escalation [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity of defined benefit obligation due to a possible increase in discount rate by 1%	0.60%
Sensitivity of defined benefit obligation due to a possible decrease in discount rate by 1%	(0.60%)
Sri Lanka [member] | Discount rate [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity of defined benefit obligation due to a possible increase in discount rate by 1%	(5.20%)
Sensitivity of defined benefit obligation due to a possible decrease in discount rate by 1%	5.80%
Sri Lanka [member] | Salary escalation [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Sensitivity of defined benefit obligation due to a possible increase in discount rate by 1%	5.70%
Sensitivity of defined benefit obligation due to a possible decrease in discount rate by 1%	(5.10%)

Pension and Other Employee O_11

Pension and Other Employee Obligations - Maturity Analysis of Defined Benefit Payments (Detail) $ in Thousands	Mar. 31, 2022USD ($)
Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items]
Defined benefit payments	$ 32,261
2023 [member]
Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items]
Defined benefit payments	3,164
2024 [member]
Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items]
Defined benefit payments	3,128
2025 [member]
Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items]
Defined benefit payments	3,194
2026 [member]
Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items]
Defined benefit payments	3,195
2027 [member]
Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items]
Defined benefit payments	3,437
Thereafter [member]
Disclosure of Information About Maturity Profile of Defined Benefit Obligation [line items]
Defined benefit payments	$ 16,143

Provisions and Accrued Expens_3

Provisions and Accrued Expenses - Summary of Provisions and Accrued Expenses (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Current provisions and accrued expenses [abstract]
Accrued expenses	$ 36,752	$ 23,933
Total	$ 36,752	$ 23,933

Contract liabilities - Summary

Contract liabilities - Summary of Deferred Revenue (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Current:
Payments in advance of services	$ 8,344	$ 8,998
Advance billings	5,081	3,489
Others	298	198
Total	13,723	12,685
Non-current:
Payments in advance of services	12,072	15,876
Advance billings	1,226	752
Others	16	17
Total	$ 13,314	$ 16,645

Other Liabilities - Summary of

Other Liabilities - Summary of Other Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Current:
Withholding taxes and value added tax payables	$ 8,164	$ 9,288
Other liabilities	3,187	2,204
Total	11,351	11,492
Non-current:
Other liabilities	78	211
Total	$ 78	$ 211

Share Capital - Additional Info

Share Capital - Additional Information (Detail) $ / shares in Units, £ in Thousands, $ in Thousands	Mar. 30, 2018USD ($)shares	Mar. 31, 2022GBP (£)shares	Mar. 31, 2022USD ($)$ / sharesshares	Mar. 31, 2021GBP (£)shares	Mar. 31, 2021USD ($)$ / sharesshares	Mar. 31, 2020USD ($)shares	Mar. 31, 2019shares
Disclosure of classes of share capital [line items]
Authorized share capital shares			60,000,000		60,000,000
Par value per share | $ / shares			$ 0.16		$ 0.16
Share cancellation charges | $			$ 110
Treasury shares [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding					1,100,000	0	1,101,300
Number of shares repurchased				1,100,000	1,100,000
Number of shares cancelled		2,200,000	2,200,000			2,200,000
Cancellation of treasury shares | $			$ 163,711			$ 120,154
Share capital [member]
Disclosure of classes of share capital [line items]
Number of shares outstanding			48,849,907		50,502,203	49,733,640	51,153,220
Number of shares cancelled		2,200,000	2,200,000			2,200,000
Cancellation of treasury shares | $			$ 302			$ 281
Share Premium [member]
Disclosure of classes of share capital [line items]
Cancellation of treasury shares | $			$ 163,409			$ 119,873
Ordinary shares [member]
Disclosure of classes of share capital [line items]
Authorized share capital amount | £		£ 6,100		£ 6,100
Authorized share capital shares			60,000,000		60,000,000
Par value per share | $ / shares			$ 10		$ 10
Number of shares outstanding			48,849,907		49,402,203
Preference shares [member]
Disclosure of classes of share capital [line items]
Authorized share capital shares			1,000,000		1,000,000
Par value per share | $ / shares			$ 10		$ 10
American depositary shares [member]
Disclosure of classes of share capital [line items]
Number of shares repurchased				1,100,000	1,100,000
Shares repurchased value | $			$ 85,038		$ 78,563
Shares repurchased transaction costs | $			$ 11		11
Share repurchase cancellation fees | $					$ 55
American depositary shares [member] | Top of range [member]
Disclosure of classes of share capital [line items]
Number of shares authorized to be repurchased	3,300,000				3,300,000
Price for repurchase of shares | $	$ 100				$ 110
Duration of share repurchase program	36 months			36 months	36 months
American depositary shares [member] | Bottom of range [member]
Disclosure of classes of share capital [line items]
Price for repurchase of shares | $	$ 10				$ 10

Revenue - Summary of Revenue by

Revenue - Summary of Revenue by Service Type (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of products and services [line items]
Revenue	$ 1,109,800	$ 912,643	$ 928,258
Industry-specific [member]
Disclosure of products and services [line items]
Revenue	431,770	372,505	364,022
Finance and accounting [member]
Disclosure of products and services [line items]
Revenue	248,572	212,563	211,069
Customer experience services [member]
Disclosure of products and services [line items]
Revenue	189,615	154,368	192,466
Research and analytics [member]
Disclosure of products and services [line items]
Revenue	116,081	94,545	96,337
Auto claims [member]
Disclosure of products and services [line items]
Revenue	96,123	54,620	46,418
Others [member]
Disclosure of products and services [line items]
Revenue	$ 27,639	$ 24,042	$ 17,946

Revenue - Summary of Revenue _2

Revenue - Summary of Revenue by Industry (Detail) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of revenue by industry [line items]
Revenue		$ 1,109,800	$ 912,643	$ 928,258
Insurance [member]
Disclosure of revenue by industry [line items]
Revenue	[1]	332,335	266,669	257,586
Healthcare [member]
Disclosure of revenue by industry [line items]
Revenue		196,614	172,878	146,622
Diversified businesses including manufacturing, retail, CPG, media and entertainment, and telecom [member]
Disclosure of revenue by industry [line items]
Revenue		149,884	139,449	152,973
Travel and leisure [member]
Disclosure of revenue by industry [line items]
Revenue		163,849	129,231	166,766
Shipping and logistics [member]
Disclosure of revenue by industry [line items]
Revenue		85,258	63,530	56,064
Utilities [member]
Disclosure of revenue by industry [line items]
Revenue		48,548	41,945	58,064
Banking and financial services [member]
Disclosure of revenue by industry [line items]
Revenue		64,034	42,555	40,485
Hi-tech and professional services
Disclosure of revenue by industry [line items]
Revenue		$ 69,278	$ 56,386	$ 49,698
[1]	Includes revenue disclosed under the Auto Claims BPM segment in Note 28.

Revenue - Summary of Revenue _3

Revenue - Summary of Revenue by Contract Type (Detail) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of revenue by contract type [line items]
Revenue		$ 1,109,800	$ 912,643	$ 928,258
Full-time-equivalent [member]
Disclosure of revenue by contract type [line items]
Revenue		703,440	592,868	615,765
Transaction [member]
Disclosure of revenue by contract type [line items]
Revenue	[1]	188,357	133,423	144,637
Subscription [member]
Disclosure of revenue by contract type [line items]
Revenue		102,859	98,176	83,135
Fixed price [member]
Disclosure of revenue by contract type [line items]
Revenue		63,570	42,371	43,518
Others [member]
Disclosure of revenue by contract type [line items]
Revenue		$ 51,574	$ 45,805	$ 41,203
[1]	Includes revenue disclosed under the Auto Claims BPM segment in Note 28.

Revenue - Summary of Revenue _4

Revenue - Summary of Revenue by Delivery Location (Detail) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		$ 1,109,800	$ 912,643	$ 928,258
Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		1,109,800	912,643	928,258
India [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		555,796	463,908	476,078
USA [member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		504,260	403,527	392,601
USA [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		168,493	150,418	134,031
Philippines [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		143,238	119,855	130,350
UK [member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		363,871	286,646	291,295
UK [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services	[1]	127,826	72,178	60,244
South Africa [member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		22,270	26,450	35,429
South Africa [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		56,735	51,625	68,051
Sri Lanka [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		16,282	15,748	13,766
Romania [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		12,756	13,107	17,433
China [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		13,880	12,740	12,399
Spain [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		5,314	5,224	8,959
Poland [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		4,989	4,816	3,649
Costa Rica [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		3,643	3,024	3,298
Australia [member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		67,409	70,297	79,875
Australia [member] | Delivery Location [Member]
Disclosure Of Revenue By Delivery Location [Line Items]
Revenue from rendering of services		$ 848	$ 0	$ 0
[1]	Includes revenue disclosed under the Auto Claims BPM segment in Note 28.

Revenue - Summary of Movement i

Revenue - Summary of Movement in Contract Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of contract assets [line items]
Opening Balance	$ 34,889	$ 36,365
Additions during the year	33,943	14,524
Amortization/recognition during the year	(17,278)	(17,757)
Impairment loss recognized during the year	(46)	(351)
Translation adjustments	(1,506)	2,108
Closing Balance	50,002	34,889
Sales Commission [member]
Disclosure of contract assets [line items]
Opening Balance	8,112	7,427
Additions during the year	5,209	2,365
Amortization/recognition during the year	(2,190)	(1,816)
Impairment loss recognized during the year	(46)	(351)
Translation adjustments	(240)	487
Closing Balance	10,845	8,112
Transition activities [member]
Disclosure of contract assets [line items]
Opening Balance	17,656	19,006
Additions during the year	17,923	7,151
Amortization/recognition during the year	(7,352)	(9,216)
Impairment loss recognized during the year	0	0
Translation adjustments	(866)	715
Closing Balance	27,361	17,656
Upfront payments/other contract assets [member]
Disclosure of contract assets [line items]
Opening Balance	9,121	9,932
Additions during the year	10,811	5,008
Amortization/recognition during the year	(7,736)	(6,725)
Impairment loss recognized during the year	0	0
Translation adjustments	(400)	906
Closing Balance	$ 11,796	$ 9,121

Revenue - Summary of Movement_2

Revenue - Summary of Movement in Contract Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure of contract liabilities [line items]
Contract liabilities	$ 27,037	$ 29,330
Payments in advance of services [member]
Disclosure of contract liabilities [line items]
Contract liabilities	20,416	24,874
Advance billings [member]
Disclosure of contract liabilities [line items]
Contract liabilities	6,307	4,241
Others [member]
Disclosure of contract liabilities [line items]
Contract liabilities	$ 314	$ 215

Revenue - Summary of revenue re

Revenue - Summary of revenue recognized in Contract Liabilities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of contract liabilities [line items]
Revenue recognized during the year	$ 11,992	$ 11,355
Payment in advance of services [member]
Disclosure of contract liabilities [line items]
Revenue recognized during the year	9,114	7,695
Advance billings [member]
Disclosure of contract liabilities [line items]
Revenue recognized during the year	2,742	3,168
Others [member]
Disclosure of contract liabilities [line items]
Revenue recognized during the year	$ 136	$ 492

Revenue - Summary of Estimated

Revenue - Summary of Estimated Revenue Expected to be Recognized in Future Related to Remaining Performance Obligations (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	$ 22,702	$ 22,869
Less than 1 Year [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	15,141	8,807
1-2 years [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	5,475	7,842
2-5 years [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	2,086	6,206
More than 5 years [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	$ 0	$ 14

Expenses by Nature - Summary of

Expenses by Nature - Summary of Expenses by Nature (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Expenses by nature [abstract]
Employee cost	$ 671,864	$ 552,148	$ 540,075
Repair payments	82,954	43,942	32,047
Facilities cost	61,238	54,563	62,743
Depreciation	50,003	48,923	47,220
Legal and professional expenses	22,207	23,298	21,996
Travel expenses	4,878	1,927	22,373
Others	47,005	38,312	38,860
Total cost of revenue, selling and marketing and general and administrative expenses	$ 940,149	$ 763,113	$ 765,314

Finance Expense - Summary of Fi

Finance Expense - Summary of Finance Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Analysis of income and expense [abstract]
Interest expense on lease liabilities	$ 12,657	$ 13,689	$ 14,782
Interest expense	461	552	2,169
Loss/(gain) on interest rate swaps	217	460	(171)
Debt issue cost	52	126	231
Total	$ 13,387	$ 14,827	$ 17,011

Other Income, Net - Summary of

Other Income, Net - Summary of Other Income, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Analysis of income and expense [abstract]
Net gain arising on financial assets designated as FVTPL	$ 7,137	$ 6,352	$ 7,547
Interest income	3,772	3,702	3,840
Others, net	2,958	2,410	2,988
Total	$ 13,867	$ 12,464	$ 14,375

Share-based Payments - Addition

Share-based Payments - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2022USD ($)yr$ / sharesshares	Mar. 31, 2021USD ($)$ / sharesshares	Mar. 31, 2020USD ($)$ / sharesshares	Mar. 31, 2019	Mar. 31, 2018
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Number of shares available for future grants | shares	3,317,713
Number of shares issued upon exercise of share options and RSUs | shares	547,704	768,563	780,420
Share-based compensation expense	$ 44,165,000	$ 38,230,000	$ 37,520,000
PSUs [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Vesting period	three years
Unrecognized compensation cost related to unvested other equity instruments	$ 9,763,000
Weighted average grant date fair value	73.46	68.05	52.14
Aggregate intrinsic value of share units exercised	14,958,000	22,207,000	20,333,000
Total grant date fair value of units vested	$ 13,599,000	$ 13,049,000	$ 10,154,000
Weighted average share price of share units exercised other equity instruments | $ / shares	$ 77.89	$ 69.10	$ 59.65
Expected weighted average period for recognition of compensation cost other equity instruments | yr	1.6
Share-based options [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Share-based incentive plan - term		10 years
Share-based options [member] | Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Vesting period	four years
Restricted share units (RSUs) [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Share-based incentive plan - term	10 years
Vesting period	four years
Weighted average grant date fair value	$ 0	$ 0	$ 0
Number of other equity instruments issued in share-based payment arrangement		1,850
RSUs dependent on non-market performance condition [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Unrecognized compensation cost related to unvested other equity instruments	$ 8,397,000
Expected weighted average period for recognition of compensation cost other equity instruments | yr	2.7
Weighted average grant date fair value	$ 74.14	$ 43.26	56.23
Aggregate intrinsic value of share units exercised	23,194,000	20,354,000	26,522,000
Total grant date fair value of units vested	$ 18,240,000	$ 15,912,000	$ 16,213,000
Weighted average share price of share units exercised other equity instruments | $ / shares	$ 78.95	$ 66.77	$ 61.03
Incremental cost recognized in the current year in respect of such modified RSUs	$ 0
Number of other equity instruments issued in share-based payment arrangement	295,441	362,795
RSUs dependent on market performance condition [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Unrecognized compensation cost related to unvested other equity instruments	$ 0
Additional cost as a result of modification in respect of modified share awards	1,185,000
Incremental cost recognized in the current year in respect of such modified RSUs		$ 3,000
Number of other equity instruments issued in share-based payment arrangement		0
Share based compenation by share based award equity other than options aggregate instrinsic value excercised	$ 1,205,000	$ 8,973,000	$ 285,000
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement | $ / shares	$ 74.18	$ 72.75	$ 56.97
RSUs related total shareholders return [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Total grant date fair value of options vested	$ 5,338,000	$ 7,651,000	$ 0
Unrecognized compensation cost related to unvested other equity instruments	$ 6,405,000
Expected weighted average period for recognition of compensation cost other equity instruments | yr	1.9
Weighted average grant date fair value	$ 78.80	$ 35.22	63.10
Number of other equity instruments issued in share-based payment arrangement	154,110	314,771
Share-based compensation expense	$ 5,892,000	$ 5,213,000
Share based compenation by share based award equity other than options aggregate instrinsic value excercised	$ 1,201,000	$ 1,413,000	$ 0
Weighted average exercise price of other equity instruments exercised or vested in share-based payment arrangement | $ / shares	$ 78.97	$ 74.20	$ 0
RSUs BBBEE Program In South Africa [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Vesting period	four years	four years
Number of other equity instruments issued in share-based payment arrangement	1,135	11,400	3,365	14,250	32,050
Share-based compensation expense	$ 324,000	$ 871,000
Unamortized Share based compensation	$ 3,483,000

Share-based Payments - Summary

Share-based Payments - Summary of Share-based Compensation Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Share-based compensation expense	$ 44,165	$ 38,230	$ 37,520
Cost of revenue [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Share-based compensation expense	5,155	4,890	4,589
Selling and marketing expenses [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Share-based compensation expense	4,948	4,327	4,789
General and administrative expenses [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Share-based compensation expense	$ 34,062	$ 29,013	$ 28,142

Share-based Payments - Movement

Share-based Payments - Movements in Number of Restricted Share Units Dependent on Non-market Performance Condition Outstanding under 2006 and 2016 Incentive Award Plan and Related Weighted Average Fair Values (Detail) - RSUs dependent on non-market performance condition [member]	12 Months Ended
	Mar. 31, 2022USD ($)	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Beginning balance	924,049	884,590
Granted	295,441	362,795
Exercised	(293,769)	(304,822)
Forfeited	(40,264)	(18,514)
Ending balance	885,457	924,049	884,590
Weighted average fair value, Beginning balance	$ 44.25	$ 44.07
Exercisable	488,608
Weighted average fair value, Granted	$ 74.14	43.26
Weighted average fair value, Exercised	47.24	42.14
Weighted average fair value, Forfeited	56.52	51.26
Weighted average fair value, Ending balance	52.67	44.25	$ 44.07
Weighted average fair value, exercisable	45.53
Aggregate intrinsic value	75,698,000	$ 66,938,000	$ 38,020,000
Aggregate intrinsic value, exercisable	$ 41,771,000

Share-based Payments - Moveme_2

Share-based Payments - Movements in Number of Restricted Share Units Dependent on Market Performance Condition Outstanding under 2006 and 2016 Incentive Award Plan and Related Weighted Average Fair Values (Detail) - RSUs dependent on market performance condition [member]	12 Months Ended
	Mar. 31, 2022USD ($)	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Beginning balance	75,645	198,990
Granted		0
Exercised	(16,245)	(123,345)
Ending balance	59,400	75,645	198,990
Exercisable	59,400
Weighted average fair value, Beginning balance	$ 14.10	$ 13.09
Granted
Exercised	13.39	12.62
Weighted average fair value, Ending balance	14.30	14.10	$ 13.09
Exercisable	14.30
Aggregate intrinsic value	5,078,000	$ 5,480,000	$ 7,908,000
Aggregate intrinsic value, exercisable	$ 5,078,000

Share-based Payments - Summar_2

Share-based Payments - Summary of RSUs related to Total Shareholder's Return ('TSR') (Detail)	12 Months Ended
	Mar. 31, 2022USD ($)shares	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)
RSUs related total shareholders return [member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Beginning balance	826,210	533,253
Granted	154,110	314,771
Exercised	(15,209)	(19,039)
Forfeited	(15,111)	(2,775)
Lapsed	(50,550)
Ending balance	899,450	826,210	533,253
Weighted average fair value, Beginning balance	$ 45.45	$ 51.07
RSUs exercisable | shares	268,777
Weighted average fair value, Granted	$ 78.80	35.22
Weighted average fair value, Exercised	50.22	36.52
Weighted average fair value, Forfeited	38.70	34.53
Weighted average fair value, Lapsed	57.20
Weighted average fair value, Ending balance	50.53	45.45	$ 51.07
Weighted average fair value, exercisable	42.92
Aggregate intrinsic value	76,894,000	$ 59,851,000	$ 22,919,000
Aggregate intrinsic value, exercisable	$ 22,978,000
Performance Share Units [Member]
Disclosure of terms and conditions of share-based payment arrangement [Line Items]
Beginning balance	771,289	911,518
Granted	275,245	193,249
Exercised	(192,053)	(321,357)
Forfeited	(16,173)	(12,121)
Ending balance	838,308	771,289	911,518
Weighted average fair value, Beginning balance	$ 43.21	$ 36.67
RSUs exercisable | shares	341,072
Weighted average fair value, Granted	$ 73.46	68.05
Weighted average fair value, Exercised	35.65	30.36
Weighted average fair value, Forfeited	60.58	53.38
Weighted average fair value, Ending balance	49.19	43.21	$ 36.67
Weighted average fair value, exercisable	38.64
Aggregate intrinsic value	71,667,000	$ 55,870,000	$ 39,176,000
Aggregate intrinsic value, exercisable	$ 29,158,000

Income Taxes - Domestic and For

Income Taxes - Domestic and Foreign Source Component of Profit/(Loss) Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of income taxes [Line Items]
Profit before income taxes	$ 164,540	$ 132,691	$ 143,952
Domestic [member]
Disclosure of income taxes [Line Items]
Profit before income taxes	(11,150)	(8,176)	(2,795)
Foreign [member]
Disclosure of income taxes [Line Items]
Profit before income taxes	$ 175,690	$ 140,867	$ 146,747

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of income taxes [Line Items]
Current taxes	$ 37,579	$ 31,326	$ 31,270
Deferred taxes	(5,140)	(1,252)	(4,087)
Income tax expense	32,439	30,074	27,183
Domestic [member]
Disclosure of income taxes [Line Items]
Current taxes	0
Deferred taxes	0
Foreign [member]
Disclosure of income taxes [Line Items]
Current taxes	37,579	31,326	31,270
Deferred taxes	$ (5,140)	$ (1,252)	$ (4,087)

Income Tax - Additional Informa

Income Tax - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Apr. 01, 2018	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2017
Disclosure of income taxes [Line Items]
Provision for income taxes		$ 20,885	$ 11,102	$ 17,692
Decrease in basic earnings loss per share		$ 0.43	$ 0.22	$ 0.36
Decrease in diluted earnings loss per share		$ 0.41	$ 0.21	$ 0.34
Unused tax losses for which no deferred tax asset recognized		$ 18,709
Temporary difference on which deferred tax liability has not been recognized amounts		984,475	$ 840,607	$ 737,776
Income tax reserve		10,216	10,591
Deposit of disputed amounts with tax authorities		11,849	$ 12,534
Demand for payment of service tax					$ 1,965
Corporate Recovery and Tax Incentives for Enterprises Act [Member]
Disclosure of income taxes [Line Items]
Corporate tax rate			5.00%
Applicability of tax rate,fixed period			10 years
Legal proceedings contingent liability [member]
Disclosure of income taxes [Line Items]
Estimated amount of additional taxes		71,712	$ 57,175
Estimated amount of additional taxes, interest		$ 25,481	19,381
Domestic [member]
Disclosure of income taxes [Line Items]
Corporate tax rate		0.00%
India [member]
Disclosure of income taxes [Line Items]
Estimated amount of additional taxes		$ 24,718	27,590
Estimated amount of additional taxes, interest		$ 6,214	$ 9,450
Costa Rica [member] | 2018 - 2021 [member]
Disclosure of income taxes [Line Items]
Percentage of income tax exemption			50.00%
Sri Lanka [member] | Changes in tax rates or tax laws enacted or announced [member]
Disclosure of income taxes [Line Items]
Corporate tax rate	14.00%
Philippines [member]
Disclosure of income taxes [Line Items]
Corporate tax rate			5.00%

Income Taxes - Income Taxes Rec

Income Taxes - Income Taxes Recognized Directly in Equity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Current and deferred tax relating to items charged or credited directly to equity [abstract]
Excess tax deductions related to share-based payments	$ (1,062)	$ (729)	$ (998)
Excess tax deductions related to share-based payments	(877)	(1,640)	807
Total income tax recognized directly in equity	$ (1,939)	$ (2,369)	$ (191)

Income Taxes - Income Taxes R_2

Income Taxes - Income Taxes Recognized in Other Comprehensive Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Income tax relating to components of other comprehensive income [abstract]
Current taxes	$ 0	$ 0	$ 0
Unrealized gain/(loss) on cash flow hedging derivatives	2,698	1,089	(2,939)
Pension liability	148	(248)	(189)
Total income tax recognized directly in other comprehensive income	$ 2,846	$ 841	$ (3,128)

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Estimated Income Tax to Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Major components of tax expense (income) [abstract]
Profit before income taxes	$ 164,540	$ 132,691	$ 143,952
Income tax expense at tax rates applicable to individual entities	50,954	41,268	43,379
Effect of:
Items not deductible for tax	358	401	414
Exempt income	(20,557)	(11,340)	(18,380)
Non tax deductible goodwill impairment	0		776
losses in respect of which deferred tax asset not recognized due to uncertainty and ineligibility to carry forward	2,183	106	178
Recognition of unutilized tax benefits / Unrecognized losses utilized	(56)	(472)	(264)
Temporary difference that will reverse during tax holiday period	2,828	1,139	2,138
Change in tax rate and law	(160)	1,228	55
Provision for uncertain tax position	0		(409)
State taxes	345	458	61
Employment related tax incentive	(2,123)	(1,734)	(1,253)
Others, net	(1,333)	(980)	488
Income tax expense	$ 32,439	$ 30,074	$ 27,183

Income Taxes - Summary of Defer

Income Taxes - Summary of Deferred Taxes Arising from Temporary Differences and Unused Tax Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	$ 22,793	$ 18,887	$ 13,066
Transition adjustments on adoption of IFRS 16	389		2,106
Recognized in statement of income	5,140	1,252	4,087
Recognized in equity	877	1,640	(807)
Recognized in/ Reclassified from other comprehensive income	(2,846)	(841)	3,128
Foreign currency translation	(878)	1,855	(2,693)
Closing balance	25,475	22,793	18,887
Deferred tax assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	39,821	33,056	30,872
Transition adjustments on adoption of IFRS 16	390		2,106
Recognized in statement of income	5,348	2,154	3,817
Recognized in equity	877	1,640	(807)
Recognized in/ Reclassified from other comprehensive income	(148)	248	189
Foreign currency translation	(1,143)	2,723	(3,121)
Closing balance	45,145	39,821	33,056
Deferred tax assets [member] | Property and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	6,188	5,592	7,073
Transition adjustments on adoption of IFRS 16	237
Recognized in statement of income	254	40	(736)
Foreign currency translation	(152)	556	(745)
Closing balance	6,527	6,188	5,592
Deferred tax assets [member] | Net operating loss carryforward [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	1,249	779	1,287
Recognized in statement of income	(294)	417	(430)
Foreign currency translation	(23)	53	(78)
Closing balance	932	1,249	779
Deferred tax assets [member] | Accruals deductible on actual payment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	10,549	9,825	7,358
Transition adjustments on adoption of IFRS 16	153		2,106
Recognized in statement of income	1,743	(120)	1,226
Recognized in/ Reclassified from other comprehensive income	(148)	248	189
Foreign currency translation	(295)	596	(1,054)
Closing balance	12,002	10,549	9,825
Deferred tax assets [member] | Share-based payment arrangements [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	21,036	16,101	14,120
Recognized in statement of income	3,678	1,861	3,917
Recognized in equity	877	1,640	(807)
Foreign currency translation	(661)	1,434	(1,129)
Closing balance	24,930	21,036	16,101
Deferred tax assets [member] | Minimum alternate tax [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance		629	552
Recognized in statement of income		(654)	135
Foreign currency translation		25	(58)
Closing balance			629
Deferred tax assets [member] | Others [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	799	130	482
Recognized in statement of income	(33)	610	(295)
Foreign currency translation	(12)	59	(57)
Closing balance	754	799	130
Deferred tax liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	17,028	14,169	17,806
Transition adjustments on adoption of IFRS 16	1
Recognized in statement of income	208	902	(270)
Recognized in/ Reclassified from other comprehensive income	2,698	1,089	(2,939)
Foreign currency translation	(265)	868	(428)
Closing balance	19,670	17,028	14,169
Deferred tax liabilities [member] | Others [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	3,674	2,380	2,084
Recognized in statement of income	293	642	488
Foreign currency translation	(134)	652	(192)
Closing balance	3,833	3,674	2,380
Deferred tax liabilities [member] | Intangible assets other than goodwill [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	11,967	11,437	12,183
Transition adjustments on adoption of IFRS 16	1
Recognized in statement of income	32	312	(753)
Foreign currency translation	(17)	218	7
Closing balance	11,983	11,967	11,437
Deferred tax liabilities [member] | Unrealized gain/(loss) on cash flow hedging and investment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [Line Items]
Opening balance	1,387	352	3,539
Recognized in statement of income	(117)	(52)	(5)
Recognized in/ Reclassified from other comprehensive income	2,698	1,089	(2,939)
Foreign currency translation	(114)	(2)	(243)
Closing balance	$ 3,854	$ 1,387	$ 352

Income Taxes - Deferred Tax Pre

Income Taxes - Deferred Tax Presented in Consolidated Statement of Financial Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Deferred tax assets and liabilities [abstract]
Deferred tax assets	$ 34,765	$ 33,022
Deferred tax liabilities	(9,290)	(10,228)
Net deferred tax assets	$ 25,475	$ 22,794

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Numerator:
Profit after tax	$ 132,101	$ 102,617	$ 116,769
Denominator:
Basic weighted average ordinary shares outstanding	48,891,004	49,765,672	49,726,636
Dilutive impact of equivalent share-based options and RSUs	2,357,573	2,343,077	2,310,304
Diluted weighted average ordinary shares outstanding	51,248,577	52,108,749	52,036,940

Earning Per Share - Additional

Earning Per Share - Additional Information (Detail) - shares	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Earnings per share [abstract]
Shares excluded from the calculation of diluted EPS options and RSUs since their effect is anti-dilutive	3,165	4,995	3,365

Related Party - List of the Com

Related Party - List of the Company's Subsidiaries (Detail)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2020
WNS Global Services (UK) Limited [member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest	94.90%
WNS Global Services (UK) Limited [member] | WNS Customer Solutions (Singapore) Private Limited [member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest	15.98%
WNS Global Services SA (Pty) Limited [Member] | WNS B-BBEE Staff Share Trust [Member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest	10.00%
WNS Global Services SA (Pty) Limited [Member] | WNS Global Services (UK) Limited [member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest	90.00%
WNS Global Services SA (Pty) Limited [Member] | WNS South Africa (Pty) Limited [Member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest		45.56%
WNS Global Services SA (Pty) Limited [Member] | WNS Global Services Netherlands BV [member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest	20.84%
WNS Global Services Private Limited [member] | WNS Global Services (UK) Limited [member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest	5.10%
WNS Global Services Private Limited [member] | WNS (Mauritius) Limited [member]
Disclosure of transactions between related parties [Line Items]
Proportion of ownership interest	63.18%

Related Party - Key Management

Related Party - Key Management Personnel Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of transactions between related parties [abstract]
Remuneration and short-term benefits	$ 7,601	$ 7,380	$ 6,959
Defined contribution plan	124	105	114
Other benefits	114	47	54
Share-based compensation expense	$ 15,264	$ 14,830	$ 17,167

Operating Segments - Additional

Operating Segments - Additional Information (Detail) - Customer	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
WNS Global BPM segment [member]
Disclosure of operating segments [Line Items]
Number of clients individually accounted for more than 10% of total revenue	0	0	0

Operating Segments - Segment Re

Operating Segments - Segment Results for Operating Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of operating segments [Line Items]
Revenue	$ 1,109,800	$ 912,643	$ 928,258
Payments to repair centers	82,954	43,942	32,047
Revenue less repair payments (non-GAAP)	1,026,846	868,701	896,211
Depreciation	50,003	48,923	47,220
Other costs	757,068	632,772	645,145
Impairment of goodwill	0	0	4,085
Other income, net	(13,867)	(12,464)	(14,375)
Finance expense	13,387	14,827	17,011
Income tax expense	32,439	30,074	27,183
Segment profit	187,816	154,569	169,942
Amortization of intangible assets	11,550	13,722	15,653
Share-based compensation expense	44,165	38,230	37,520
Profit after tax	132,101	102,617	116,769
Addition to non-current assets	41,326	48,598	44,733
Total assets, net of elimination	1,164,492	1,106,148	1,012,329
Total liabilities, net of elimination	410,489	422,056	425,219
External customers [member]
Disclosure of operating segments [Line Items]
Revenue	1,109,800	912,643	928,258
Operating segments [member]
Disclosure of operating segments [Line Items]
Segment operating profit/(loss)	219,775	187,006	199,761
Segment profit before income taxes	220,255	184,643	197,125
Operating segments [member] | WNS Global BPM [member]
Disclosure of operating segments [Line Items]
Revenue	1,014,671	858,368	882,016
Revenue less repair payments (non-GAAP)	1,014,671	858,368	882,016
Depreciation	49,277	48,302	46,722
Other costs	742,745	620,487	630,375
Segment operating profit/(loss)	222,649	189,579	204,919
Other income, net	(13,134)	(11,847)	(13,298)
Finance expense	13,323	14,758	16,932
Segment profit before income taxes	222,460	186,668	201,285
Income tax expense	32,703	29,661	27,387
Segment profit	189,757	157,007	173,898
Addition to non-current assets	39,094	46,806	42,973
Total assets, net of elimination	1,044,865	979,281	892,572
Total liabilities, net of elimination	319,936	329,192	339,660
Operating segments [member] | WNS Global BPM [member] | External customers [member]
Disclosure of operating segments [Line Items]
Revenue	1,013,677	858,023	881,840
Operating segments [member] | WNS Auto Claims BPM [member]
Disclosure of operating segments [Line Items]
Revenue	96,123	54,620	46,418
Payments to repair centers	82,954	43,942	32,047
Revenue less repair payments (non-GAAP)	13,169	10,678	14,371
Depreciation	726	621	498
Other costs	15,317	12,630	14,946
Impairment of goodwill			4,085
Segment operating profit/(loss)	(2,874)	(2,573)	(5,158)
Other income, net	(733)	(617)	(1,077)
Finance expense	64	69	79
Segment profit before income taxes	(2,205)	(2,025)	(4,160)
Income tax expense	(264)	413	(204)
Segment profit	(1,941)	(2,438)	(3,956)
Addition to non-current assets	2,232	1,792	1,760
Total assets, net of elimination	119,627	126,867	119,757
Total liabilities, net of elimination	90,553	92,864	85,559
Operating segments [member] | WNS Auto Claims BPM [member] | External customers [member]
Disclosure of operating segments [Line Items]
Revenue	96,123	54,620	46,418
Inter segments [member]
Disclosure of operating segments [Line Items]
Revenue	(994)	(345)	(176)
Revenue less repair payments (non-GAAP)	(994)	(345)	(176)
Other costs	$ (994)	$ (345)	$ (176)

Operating Segments - External R

Operating Segments - External Revenue and Non-current Assets (Excluding Goodwill and Intangible Assets) by Geographic Area (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of geographical areas [Line Items]
Revenue	$ 1,109,800	$ 912,643	$ 928,258
Non-current assets (excluding goodwill and intangible assets)	191,880	219,038
Jersey, Channel Islands [member]
Disclosure of geographical areas [Line Items]
Revenue	0	0	0
Non-current assets (excluding goodwill and intangible assets)	0	0
UK [member]
Disclosure of geographical areas [Line Items]
Revenue	363,871	286,646	291,295
Non-current assets (excluding goodwill and intangible assets)	5,066	6,396
USA [member]
Disclosure of geographical areas [Line Items]
Revenue	504,260	403,527	392,601
Non-current assets (excluding goodwill and intangible assets)	14,707	16,601
India [member]
Disclosure of geographical areas [Line Items]
Non-current assets (excluding goodwill and intangible assets)	90,272	108,971
South Africa [member]
Disclosure of geographical areas [Line Items]
Revenue	22,270	26,450	35,429
Non-current assets (excluding goodwill and intangible assets)	12,136	16,737
Philippines [member]
Disclosure of geographical areas [Line Items]
Non-current assets (excluding goodwill and intangible assets)	59,030	58,149
Rest of the world [member]
Disclosure of geographical areas [Line Items]
Revenue	84,072	64,342	54,750
Non-current assets (excluding goodwill and intangible assets)	10,669	12,184
Europe (excluding UK) [member]
Disclosure of geographical areas [Line Items]
Revenue	67,918	61,381	74,308
Australia [member]
Disclosure of geographical areas [Line Items]
Revenue	$ 67,409	$ 70,297	$ 79,875

Commitment and Contingencies -

Commitment and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Commitments and contingencies [line items]
Commitments net	$ 9,522	$ 7,027
Bank guarantees	868	1,264
Restricted time deposits	$ 666	$ 766
Bottom of range [member]
Commitments and contingencies [line items]
Bank guarantees, remaining expiry term	1 year
Top of range [member]
Commitments and contingencies [line items]
Bank guarantees, remaining expiry term	5 years

Additional Capital Disclosure_2

Additional Capital Disclosures - Summary of Capital Structure (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Mar. 31, 2021		Mar. 31, 2020	Mar. 31, 2019
Disclosure of objectives, policies and processes for managing capital [abstract]
Total equity attributable to the equity shareholders of the Company		$ 754,003	$ 684,092		$ 587,110	$ 552,419
As percentage of total capital		100.00%	98.00%
Long term debt	[1]	$ 0	$ 16,800	[2]
Total debt	[1]	$ 0	$ 16,800	[2]
As percentage of total capital		0.00%	2.00%
Total capital (debt and equity)		$ 754,003	$ 700,892
Percentage of change in total equity attributable to the equity shareholders of the Company		10.00%
Percentage of change in long term debt		(100.00%)
Percentage of change in total debt		(100.00%)
Percentage of change in total capital (debt and equity)		8.00%
[1]	Before netting off debt issuance cost of $Nil and $52 as at March 31, 2022 and March 31, 2021, respectively.
[2]	Excluding non-financial asset (unamortized debt issuance cost) $52.

Additional Capital Disclosure_3

Additional Capital Disclosures - Summary of Capital Structure (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Disclosure of objectives, policies and processes for managing capital [abstract]
Unamortised debt issuance cost	$ 0	$ 52

Additional Capital Disclosure_4

Additional Capital Disclosures - Additional Information (Detail)	Mar. 31, 2022	Mar. 31, 2021
Disclosure of objectives, policies and processes for managing capital [abstract]
Borrowings percentage of outstanding share capital	0.00%	2.00%