Paycom Software (PAYC) 10-Q 5 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 27, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Trading Symbol	PAYC
Entity Registrant Name	Paycom Software, Inc.
Entity Central Index Key	0001590955
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		60,094,394
Title of 12(b) Security	Common Stock, $0.01 par value
Security Exchange Name	NYSE
Entity File Number	001-36393
Entity Tax Identification Number	80-0957485
Entity Address, Address Line One	7501 W. Memorial Road
Entity Address, City or Town	Oklahoma City
Entity Address, State or Province	OK
Entity Incorporation, State or Country Code	DE
Entity Address, Postal Zip Code	73142
City Area Code	405
Local Phone Number	722-6900
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false

Unaudited Consolidated Balance

Unaudited Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 202,362	$ 151,710
Accounts receivable	19,905	9,130
Prepaid expenses	32,284	17,854
Inventory	882	1,151
Income tax receivable	7,997	10,447
Deferred contract costs	67,720	60,819
Current assets before funds held for clients	331,150	251,111
Funds held for clients	2,025,372	1,613,494
Total current assets	2,356,522	1,864,605
Property and equipment, net	320,997	285,218
Intangible assets, net	60,087	319
Goodwill	51,889	51,889
Long-term deferred contract costs	410,700	371,357
Other assets	32,892	34,524
Total assets	3,233,087	2,607,912
Current liabilities:
Accounts payable	9,220	6,787
Accrued commissions and bonuses	9,918	13,703
Accrued payroll and vacation	28,640	24,529
Deferred revenue	14,946	13,567
Current portion of long-term debt	1,775	1,775
Accrued expenses and other current liabilities	55,337	44,175
Current liabilities before client funds obligation	119,836	104,536
Client funds obligation	2,025,372	1,613,494
Total current liabilities	2,145,208	1,718,030
Deferred income tax liabilities, net	119,083	112,598
Long-term deferred revenue	77,512	73,259
Net long-term debt, less current portion	28,250	29,119
Other long-term liabilities	70,778	19,263
Total long-term liabilities	295,623	234,239
Total liabilities	2,440,831	1,952,269
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.01 par value (100,000 shares authorized, 62,135 and 61,861 shares issued at June 30, 2021 and December 31, 2020, respectively; 57,918 and 57,739 shares outstanding at June 30, 2021 and December 31, 2020, respectively)	621	618
Additional paid-in capital	409,979	357,908
Retained earnings	836,513	719,619
Treasury stock, at cost (4,217 and 4,122 shares at June 30, 2021 and December 31, 2020, respectively)	(454,857)	(422,502)
Total stockholders’ equity	792,256	655,643
Total liabilities and stockholders’ equity	$ 3,233,087	$ 2,607,912

Unaudited Consolidated Balanc_2

Unaudited Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	62,135,000	61,861,000
Common stock, shares outstanding	57,918,000	57,739,000
Treasury stock, shares	4,217,000	4,122,000

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Total revenues	$ 242,146	$ 181,587	$ 514,344	$ 423,955
Cost of revenues
Operating expenses	28,773	23,257	57,846	47,373
Depreciation and amortization	7,637	6,301	14,837	12,231
Total cost of revenues	36,410	29,558	72,683	59,604
Administrative expenses
Sales and marketing	67,979	56,064	130,740	111,082
Research and development	28,224	21,778	52,935	43,399
General and administrative	54,063	40,837	100,254	80,971
Depreciation and amortization	8,380	6,774	16,096	13,059
Total administrative expenses	158,646	125,453	300,025	248,511
Total operating expenses	195,056	155,011	372,708	308,115
Operating income	47,090	26,576	141,636	115,840
Interest expense		(3)		(19)
Other income (expense), net	146	162	775	(768)
Income before income taxes	47,236	26,735	142,411	115,053
Provision (benefit) for income taxes	(5,042)	(1,854)	25,517	23,449
Net income	$ 52,278	$ 28,589	$ 116,894	$ 91,604
Earnings per share, basic	$ 0.90	$ 0.50	$ 2.02	$ 1.59
Earnings per share, diluted	$ 0.90	$ 0.49	$ 2.01	$ 1.57
Weighted average shares outstanding:
Basic	57,853	57,568	57,797	57,611
Diluted	58,092	58,237	58,135	58,363
Recurring [Member]
Revenues
Total revenues	$ 237,585	$ 177,950	$ 505,359	$ 416,445
Implementation and Other [Member]
Revenues
Total revenues	$ 4,561	$ 3,637	$ 8,985	$ 7,510

Unaudited Consolidated Statem_2

Unaudited Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Beginning balance, value at Dec. 31, 2019	$ 526,628	$ 613	$ 257,501	$ 576,166	$ (307,652)
Beginning balance, shares at Dec. 31, 2019		61,350			3,689
Vesting of restricted stock		$ 1	(1)
Vesting of restricted stock, shares		2
Stock-based compensation	18,313		18,313
Repurchases of common stock	(8,168)				$ (8,168)
Repurchases of common stock, shares					41
Net income	63,015			63,015
Ending balance, value at Mar. 31, 2020	599,788	$ 614	275,813	639,181	$ (315,820)
Ending balance, shares at Mar. 31, 2020		61,352			3,730
Beginning balance, value at Dec. 31, 2019	526,628	$ 613	257,501	576,166	$ (307,652)
Beginning balance, shares at Dec. 31, 2019		61,350			3,689
Net income	91,604
Ending balance, value at Jun. 30, 2020	585,853	$ 616	300,408	667,770	$ (382,941)
Ending balance, shares at Jun. 30, 2020		61,613			4,025
Beginning balance, value at Mar. 31, 2020	599,788	$ 614	275,813	639,181	$ (315,820)
Beginning balance, shares at Mar. 31, 2020		61,352			3,730
Vesting of restricted stock		$ 2	(2)
Vesting of restricted stock, shares		261
Stock-based compensation	24,597		24,597
Repurchases of common stock	(67,121)				$ (67,121)
Repurchases of common stock, shares					295
Net income	28,589			28,589
Ending balance, value at Jun. 30, 2020	585,853	$ 616	300,408	667,770	$ (382,941)
Ending balance, shares at Jun. 30, 2020		61,613			4,025
Beginning balance, value at Dec. 31, 2020	655,643	$ 618	357,908	719,619	$ (422,502)
Beginning balance, shares at Dec. 31, 2020		61,861			4,122
Vesting of restricted stock, shares		3
Stock-based compensation	25,594		25,594
Repurchases of common stock	(377)				$ (377)
Repurchases of common stock, shares					1
Net income	64,616			64,616
Ending balance, value at Mar. 31, 2021	745,476	$ 618	383,502	784,235	$ (422,879)
Ending balance, shares at Mar. 31, 2021		61,864			4,123
Beginning balance, value at Dec. 31, 2020	655,643	$ 618	357,908	719,619	$ (422,502)
Beginning balance, shares at Dec. 31, 2020		61,861			4,122
Net income	116,894
Ending balance, value at Jun. 30, 2021	792,256	$ 621	409,979	836,513	$ (454,857)
Ending balance, shares at Jun. 30, 2021		62,135			4,217
Beginning balance, value at Mar. 31, 2021	745,476	$ 618	383,502	784,235	$ (422,879)
Beginning balance, shares at Mar. 31, 2021		61,864			4,123
Vesting of restricted stock		$ 3	(3)
Vesting of restricted stock, shares		271
Stock-based compensation	26,480		26,480
Repurchases of common stock	(31,978)				$ (31,978)
Repurchases of common stock, shares					94
Net income	52,278			52,278
Ending balance, value at Jun. 30, 2021	$ 792,256	$ 621	$ 409,979	$ 836,513	$ (454,857)
Ending balance, shares at Jun. 30, 2021		62,135			4,217

Unaudited Consolidated Statem_3

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net income	$ 116,894	$ 91,604
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	30,933	25,290
Accretion of discount on available-for-sale securities	(183)	(974)
Non-cash marketing expense	157
Loss on disposition of property and equipment	132
Amortization of debt issuance costs	18	19
Stock-based compensation expense	47,373	37,029
Cash paid for derivative settlement	(418)	(233)
(Gain)/loss on derivative	(287)	1,939
Deferred income taxes, net	6,485	7,319
Changes in operating assets and liabilities:
Accounts receivable	(10,775)	3
Prepaid expenses	(14,430)	(11,426)
Inventory	80	(433)
Other assets	1,631	(1,113)
Deferred contract costs	(44,893)	(40,488)
Accounts payable	2,267	(1,017)
Income taxes, net	2,450	(304)
Accrued commissions and bonuses	(3,785)	(5,804)
Accrued payroll and vacation	4,111	4,079
Deferred revenue	5,632	4,643
Accrued expenses and other current liabilities	3,051	(2,621)
Net cash provided by operating activities	146,443	107,512
Cash flows from investing activities
Purchase of short-term investments from funds held for clients	(142,051)	(207,878)
Proceeds from maturities of short-term investments from funds held for clients	155,000	70,343
Purchases of property and equipment	(62,732)	(52,458)
Net cash used in investing activities	(49,783)	(189,993)
Cash flows from financing activities
Repurchases of common stock		(52,040)
Withholding taxes paid related to net share settlements	(32,355)	(23,249)
Payments on long-term debt	(888)	(888)
Net change in client funds obligation	411,878	(629,243)
Net cash provided by (used in) financing activities	378,635	(705,420)
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	475,295	(787,901)
Cash, cash equivalents, restricted cash and restricted cash equivalents
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period	1,585,275	1,641,854
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	2,060,570	853,953
Cash and cash equivalents	202,362	113,518
Restricted cash included in funds held for clients	1,858,208	740,435
Non-cash investing and financing activities:
Purchases of property and equipment, accrued but not paid	7,131	4,832
Stock-based compensation for capitalized software	3,351	3,718
Right of use assets obtained in exchange for operating lease liabilities	$ 1,572	$ 5,124

Organization and Description of

Organization and Description of Business	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Organization and Description of Business	1. ORGANIZATION AND DESCRIPTION OF BUSINESS Paycom Software, Inc. (“Software”) and its wholly-owned subsidiaries (collectively, the “Company”) is a leading provider of a comprehensive, cloud-based human capital management (“HCM”) solution delivered as Software-as-a-Service. Unless we state otherwise or the context otherwise requires, the terms “we,” “our,” “us” and the “Company” refer to Software and its consolidated subsidiaries. We provide functionality and data analytics that businesses need to manage the complete employment lifecycle, from recruitment to retirement. Our solution requires virtually no customization and is based on a core system of record maintained in a single database for all HCM functions, including talent acquisition, time and labor management, payroll, talent management and human resources (“HR”) management applications.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2 . SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Our significant accounting policies are discussed in “Note 2. Summary of Significant Accounting Policies” in the notes to our audited consolidated financial statements included in the Annual Report on Form 10-K for the year ended December 31, 2020 (the “Form 10-K”) filed with the Securities and Exchange Commission (“SEC”) on February 18, 2021. Basis of Presentation The accompanying unaudited interim consolidated financial statements and notes have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the SEC regarding interim financial statements that permit reduced disclosure for interim periods. In the opinion of management, the unaudited consolidated financial statements reflect all adjustments of a normal recurring nature that are necessary for a fair presentation of the results for the interim periods presented. These unaudited consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and related notes presented in the Form 10-K. The results of operations for the three and six months ended June 30, 2021 are not necessarily indicative of the results expected for the full year. Recently Adopted Accounting Pronouncements In January 2021, we adopted Accounting Standards Update (“ASU”) No. 2019-12, “Income Taxes (Topic 740) Simplifying the Accounting for Income Taxes” (“ASU 2019-12”) utilizing the prospective transition method. The amendments in ASU 2019-12 eliminate certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income tax in an interim period and the recognition of deferred tax liabilities for outside basis differences. ASU 2019-12 also clarifies and simplifies other aspects of the accounting for income taxes. The adoption of this guidance did not have a material impact on our unaudited interim consolidated financial statements. In January 2020, we adopted ASU No. 2018-15, “Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force)” (“ASU 2018-15”) utilizing the prospective transition method. ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The adoption of this guidance did not have a material impact on our unaudited interim consolidated financial statements. In January 2020, we adopted ASU No. 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement” (“ASU 2018-13”). ASU No. 2018-13 modifies the disclosure requirements in Topic 820, “Fair Value Measurement,” based on the FASB Concepts Statement, “Conceptual Framework for Financial Reporting – Chapter 8: Notes to Financial Statements,” including consideration of costs and benefits. The adoption of ASU 2018-13 removed or modified disclosure requirements retrospectively to all periods presented, whereas any new requirements have been applied prospectively from the adoption date. The adoption of this guidance did not have a material impact on our unaudited interim consolidated financial statements. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant estimates include income taxes, loss contingencies, the useful life of property and equipment, the life of our client relationships, the fair value of our stock-based awards and the fair value of our financial instruments, intangible assets and goodwill. These estimates are based on historical experience where applicable and other assumptions that management believes are reasonable under the circumstances. Actual results could materially differ from these estimates. Prior Period Reclassifications Certain immaterial prior period amounts have been reclassified to conform to the current period presentation. Seasonality Our revenues are seasonal in nature. Recurring revenues include revenues relating to the annual processing of payroll forms, such as Form W-2, Form 1099, and Form 1095 and revenues from processing unscheduled payroll runs (such as bonuses) for our clients. As payroll forms are typically processed in the first quarter of the year, first quarter revenues and margins are generally higher than in subsequent quarters. These seasonal fluctuations in revenues can also have an impact on gross profits. Historical results impacted by these seasonal trends should not be considered a reliable indicator of our future results of operations. Employee Stock Purchase Plan An award issued under the Paycom Software, Inc. Employee Stock Purchase Plan (the “ESPP”) is classified as a share-based liability and recognized at the fair value of the award. Expense is recognized, net of estimated forfeitures, on a straight-line basis over the requisite service period. Funds Held for Clients and Client Funds Obligation As part of our payroll and tax filing application, we (i) collect client funds to satisfy their respective federal, state and local employment tax obligations, (ii) remit such funds to the appropriate taxing authorities and accounts designated by our clients, and (iii) manage client tax filings and any related correspondence with taxing authorities. Amounts collected by us from clients for their federal, state and local employment taxes are invested by us, and we earn interest on these funds during the interval between receipt and disbursement. These investments are shown in our consolidated balance sheets as funds held for clients, and the offsetting liability for the tax filings is shown as client funds obligation. The liability is recorded in the accompanying consolidated balance sheets at the time we obtain the funds from clients. The client funds obligation represents liabilities that will be repaid within one year of the consolidated balance sheet date. As of June 30, 2021 and December 31, 2020, the funds held for clients were invested in money market funds, demand deposit accounts, commercial paper with a maturity duration less than three months and certificates of deposit. Short-term investments in commercial paper and certificates of deposit with an original maturity duration greater than three months are classified as available-for-sale securities, and are also included within the funds held for clients line item in the consolidated balance sheets. These available-for-sale securities are recorded in the consolidated balance sheets at fair value, which approximates the amortized cost of the securities. Funds held for clients are classified as a current asset in the consolidated balance sheets because the funds are held solely to satisfy the client funds obligation. Stock Repurchase Plan In May 2016, our Board of Directors authorized a stock repurchase plan allowing for the repurchase of shares of our common stock in open market transactions at prevailing market prices, in privately negotiated transactions or by other means in accordance with federal securities laws, including Rule 10b5-1 programs. Since the initial authorization of the stock repurchase plan, our Board of Directors has amended and extended and authorized new stock repurchase plans from time to time. Most recently, in May 2021, our Board of Directors authorized the repurchase of up to $300.0 million of our common stock. As of June 30, 2021, there was $299.5 million available for repurchases under our stock repurchase plan. Our stock repurchase plan may be suspended or discontinued at any time. The actual timing, number and value of shares repurchased depends on a number of factors, including the market price of our common stock, general market and economic conditions, shares withheld for taxes associated with the vesting of restricted stock and other corporate considerations. The current stock repurchase plan will expire on May 13, 2023. During the six months ended June 30, 2021, we repurchased an aggregate of 94,997 shares of our common stock at an average cost of $340.59 per share, all of which were shares withheld to satisfy tax withholding obligations for certain employees upon the vesting of restricted stock. Recently Issued Accounting Pronouncements In March 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-04, “Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (“ASU 2020-04”). ASU 2020-04 provides temporary optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform. Our interest-bearing notes bear interest, at our option, at either (a) a prime rate plus 1.0% or (b) fluctuating interest rates based on LIBOR. If LIBOR ceases to exist, we may need to renegotiate our loan documents and we cannot predict what alternative index would be negotiated with our lenders. ASU 2020-04 is currently effective and upon adoption may be applied prospectively to contract modifications made on or before December 31, 2022. We are currently assessing the impact that this guidance will have on our consolidated financial statements . In January 2021, the FASB issued ASU No. 2021-01, “Reference Rate Reform (Topic 848) Scope” (“ASU 2021-01”), which clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivative instruments that are affected by the discounting transition. ASU 2021-01 amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. ASU 2021-01 is currently effective and upon adoption may be applied to contract modifications that change the interest rate used for margining, discounting, or contract price alignment retrospectively as of any date from the beginning of the interim period that includes March 12, 2020, or prospectively to new modifications from any date within the interim period that includes or is subsequent to January 7, 2021, up to the date that financial statements are available to be issued. We are currently assessing the impact that this guidance will have on our consolidated financial statements.

Revenue

Revenue	6 Months Ended
	Jun. 30, 2021
Revenue From Contract With Customer [Abstract]
Revenue	3. REVENUE Revenues are recognized when control of the promised goods or services is transferred to our clients in an amount that reflects the consideration we expect to be entitled to for those goods or services. Substantially all of our revenues are comprised of revenue from contracts with clients. Sales taxes and other applicable taxes are excluded from revenues. Recurring Revenues Recurring revenues are derived primarily from our talent acquisition, time and labor management, payroll, talent management and HR management applications as well as fees charged for form filings and delivery of client payroll checks and reports. Talent acquisition includes our applicant tracking, candidate tracker, background check, on-boarding, e-verify and tax credit services applications. Time and labor management includes time and attendance, scheduling/schedule exchange, time-off requests, labor allocation, labor management reports/push reporting and geofencing/geotracking. Payroll includes Beti™, our payroll and tax management, Paycom Pay®, expense management, garnishment management and GL Concierge applications. Talent management includes our employee self-service, compensation budgeting, performance management, executive dashboard and Paycom learning and course content applications. HR management includes our document and task management, government and compliance, benefits administration, benefit enrollment services, COBRA administration, personnel action forms, surveys and enhanced Affordable Care Act applications. The performance obligations related to recurring revenues are satisfied during each client’s payroll period, with the agreed-upon fee being charged and collected as part of our processing of the client’s payroll. Recurring revenues are recognized at the conclusion of processing of each client’s payroll period, when each respective payroll client is billed. Collectability is reasonably assured as the fees are collected through an automated clearing house as part of the client’s payroll cycle or through direct wire transfer, which minimizes the default risk. The contract period for substantially all contracts associated with these revenues is one month due to the fact that both we and the client have the unilateral right to terminate a wholly unperformed contract without compensating the other party by providing 30 days’ notice of termination. Our payroll application is the foundation of our solution, and all of our clients are required to utilize this application in order to access our other applications. For clients who purchase multiple applications, due to the short-term nature of our contracts, we do not believe it is meaningful to separately assess and identify whether or not each application potentially represents its own, individual, performance obligation as the revenue generated from each application is recognized within the same month as the revenue from the core payroll application. Similarly, we do not believe it is meaningful to individually determine the standalone selling price for each application. We consider the total price charged to a client in a given period to be indicative of the standalone selling price, as the total amount charged is within a reasonable range of prices typically charged for our goods and services for comparable classes of client groups, which we periodically assess for price adjustments. Implementation and Other Revenues Implementation and other revenues consist of nonrefundable upfront conversion fees which are charged to new clients to offset the expense of new client set-up as well as revenues from the sale of time clocks as part of our employee time and attendance services. Although these revenues are related to our recurring revenues, they represent distinct performance obligations. Implementation activities primarily represent administrative activities that allow us to fulfill future performance obligations for our clients and do not represent servi ces transferred to the client. However, the nonrefundable upfront fee charged to our clients results in an implied performance obligation in the form of a material right to the client related to the client’s option to renew at the end of each 30-day contract period. Further, given that all other services within the contract are sold at a total price indicative of the standalone selling price, coupled with the fact that the upfront fees are consistent with upfront fees charged in similar contracts that we have with clients, the standalone selling price of the client’s option to renew the contract approximates the dollar amount of the nonrefundable upfront fee. The nonrefundable upfront fee is typically included on the client’s first invoice, and is deferred and recognized ratably over the estimated renewal period ( i.e. , ten-year estimated client life). Revenues from the sale of time clocks are recognized when control is transferred to the client upon delivery of the product. We estimate the standalone selling price for the time clocks by maximizing the use of observable inputs such as our specific pricing practices for time clocks. Contract Balances The timing of revenue recognition for recurring services is consistent with the invoicing of clients as they both occur during the respective client payroll period for which the services are provided. Therefore, we do not recognize a contract asset or liability resulting from the timing of revenue recognition and invoicing. Changes in deferred revenue related to material right performance obligations as of June 30, 2021 and 2020 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Balance, beginning of period $ 88,993 $ 78,455 $ 86,826 $ 76,244 Deferral of revenue 8,536 6,601 15,498 12,486 Recognition of unearned revenue (5,071 ) (4,169 ) (9,866 ) (7,843 ) Balance, end of period $ 92,458 $ 80,887 $ 92,458 $ 80,887 We expect to recognize $7.7 million of deferred revenue related to material right performance obligations in the remainder of 2021, $14.2 million of such deferred revenue in 2022, and $70.6 million of such deferred revenue thereafter Assets Recognized from the Costs to Obtain and Costs to Fulfill Revenue Contracts We recognize an asset for the incremental costs of obtaining a contract with a client if we expect the amortization period to be longer than one year. We also recognize an asset for the costs to fulfill a contract with a client if such costs are specifically identifiable, generate or enhance resources used to satisfy future performance obligations, and are expected to be recovered. We have determined that substantially all costs related to implementation activities are administrative in nature and also meet the capitalization criteria under ASC 340-40. These capitalized costs to fulfill principally relate to upfront direct costs that are expected to be recovered through margin and that enhance our ability to satisfy future performance obligations. The assets related to both costs to obtain, and costs to fulfill, contracts with clients are accounted for utilizing a portfolio approach, and are capitalized and amortized over the expected period of benefit, which we have determined to be the estimated client relationship of ten years. The expected period of benefit has been determined to be the estimated life of the client relationship primarily because we incur no new costs to obtain, or costs to fulfill, a contract upon renewal of such contract. Additional commission costs may be incurred when an existing client purchases additional applications; however, these commission costs relate solely to the additional applications purchased and are not related to contract renewal. Furthermore, additional fulfillment costs associated with existing clients purchasing additional applications are minimized by our seamless single-database platform. These assets are presented as deferred contract costs in the accompanying consolidated balance sheets. Amortization expense related to costs to obtain and costs to fulfill a contract are included in the “sales and marketing” and “general and administrative” line items in the accompanying consolidated statements of income. The following tables present the asset balances and related amortization expense for these contract costs: As of and for the Three Months Ended June 30, 2021 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 244,339 $ 13,701 $ (9,132 ) $ 248,908 Costs to fulfill a contract $ 214,969 $ 21,934 $ (7,391 ) $ 229,512 As of and for the Three Months Ended June 30, 2020 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 208,960 $ 7,982 $ (7,480 ) $ 209,462 Costs to fulfill a contract $ 158,321 $ 19,071 $ (5,451 ) $ 171,941 As of and for the Six Months Ended June 30, 2021 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 232,583 $ 34,242 $ (17,917 ) $ 248,908 Costs to fulfill a contract $ 199,593 $ 44,112 $ (14,193 ) $ 229,512 As of and for the Six Months Ended June 30, 2020 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 194,964 $ 29,166 $ (14,668 ) $ 209,462 Costs to fulfill a contract $ 143,788 $ 38,580 $ (10,427 ) $ 171,941

Property and Equipment

Property and Equipment	6 Months Ended
	Jun. 30, 2021
Property Plant And Equipment [Abstract]
Property and Equipment	4. PROPERTY AND EQUIPMENT Property and equipment and accumulated depreciation and amortization were as follows: June 30, 2021 December 31, 2020 Property and equipment Software and capitalized software costs $ 170,635 $ 144,190 Buildings 116,025 115,772 Computer equipment 76,394 68,181 Rental clocks 27,900 25,474 Furniture, fixtures and equipment 20,786 19,829 Other 7,118 7,016 418,858 380,462 Less: accumulated depreciation and amortization (208,424 ) (178,111 ) 210,434 202,351 Construction in progress 81,529 53,833 Land 29,034 29,034 Property and equipment, net $ 320,997 $ 285,218 We capitalize computer software development costs related to software developed for internal use in accordance with ASC 350-40. For the three and six months ended June 30, 2021, we capitalized $13.7 million and $26.0 million, respectively, of computer software development costs related to software developed for internal use. For the three and six months ended June 30, 2020, we capitalized $11.0 million and $20.7 million, respectively, of computer software development costs related to software developed for internal use. Rental clocks included in property and equipment, net represent time clocks issued to clients under month-to-month operating leases. As such, these items are transferred from inventory to property and equipment and depreciated over their estimated useful lives. We capitalize interest incurred for indebtedness related to construction in progress. For the three and six months ended June 30, 2021, we incurred interest costs of $0.3 million and $0.7 million, respectively, of which we capitalized $0.3 million and $0.7 million, respectively. For the three and six months ended June 30, 2020, we incurred interest costs of $0.4 million and $0.8 million, respectively, of which we capitalized $0.4 million and $0.8 million, respectively. Included in the construction in progress balance at June 30, 2021 and December 31, 2020 is $3.9 million and $3.5 million in retainage, respectively. Depreciation and amortization expense for property and equipment was $15.6 million and $30.5 million, respectively, for the three and six months ended June 30, 2021. Depreciation and amortization expense for property and equipment was $13.0 million and $25.2 million, respectively, for the three and six months ended June 30, 2020.

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	6 Months Ended
	Jun. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	5. GOODWILL AND INTANGIBLE ASSETS, NET As of both June 30, 2021 and December 31, 2020, goodwill was $51.9 million. We have selected June 30 as our annual goodwill impairment testing date. We performed a qualitative analysis of the fair value of our goodwill and determined there was no impairment as of June 30, 2021. As of June 30, 2021 and December 31, 2020, there were no indicators of impairment. In connection with our marketing initiatives, we have purchased the naming rights to the downtown Oklahoma City arena that is home to the Oklahoma City Thunder National Basketball Association franchise. Under the terms of the naming rights agreement, we have committed to make estimated payments escalating annually from $4.0 million to $6.1 million through 2035. Upon the conclusion of the initial term, the agreement may be extended upon the mutual agreement of both parties for an additional five-year period. The cost of the naming rights has been recorded as an intangible asset with an offsetting liability as of the date of the contract. The intangible asset is being amortized over the life of the agreement on a straight line basis commencing in June 2021. The offsetting liability is being relieved through sales and marketing expense using the effective interest method over the life of the agreement. All of our intangible assets other than goodwill are considered to have definite lives and, as such, are subject to amortization. The following table presents the components of intangible assets within our consolidated balance sheets: June 30, 2021 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Naming rights 15.4 $ 60,199 $ (325 ) $ 59,874 Trade name 1.0 3,194 (2,981 ) 213 Total $ 63,393 $ (3,306 ) $ 60,087 December 31, 2020 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Trade name 1.5 $ 3,194 $ (2,875 ) $ 319 Total $ 3,194 $ (2,875 ) $ 319 Amortization of intangible assets for the three and six months ended June 30, 2021 was $0.4 million and $0.4 million, respectively. Amortization of intangible assets for the three and six months ended June 30, 2020 was less than $0.1 million and $0.1 million, respectively. We estimate the aggregate amortization expense will be $2.1 million for the remainder of 2021, $4.0 million for 2022, and $3.9 million for 2023, 2024, 2025 and 2026, respectively.

Long-Term Debt, Net

Long-Term Debt, Net	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Long-Term Debt, Net	6. LONG-TERM DEBT, NET Long-term debt consisted of the following: June 30, 2021 December 31, 2020 Net term note to bank due September 7, 2025 $ 30,025 $ 30,894 Total long-term debt, net (including current portion) 30,025 30,894 Less: Current portion (1,775 ) (1,775 ) Total long-term debt, net $ 28,250 $ 29,119 On December 7, 2017, we entered into a senior secured term credit agreement (as amended from time to time, the “Term Credit Agreement”), pursuant to which JPMorgan Chase Bank, N.A., Bank of America, N.A. and Kirkpatrick Bank made certain term loans to us (the “Term Loans”). Our obligations under the Term Loans are secured by a mortgage and first priority security interest in our corporate headquarters property. The Term Loans mature on September 7, 2025 and bear interest, at our option, at either (a) a prime rate plus 1.0% or (b) an adjusted LIBOR rate for the interest period in effect for such Term Loan plus 1.5%. As of June 30, 2021, our long-term indebtedness consisted solely of the Term Loans made under the Term Credit Agreement. Unamortized debt issuance costs of $0.2 million as of both June 30, 2021 and December 31, 2020 are presented as a direct deduction from the carrying amount of the debt liability. Under the Term Credit Agreement, we are subject to two material financial covenants, which require us to maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0. As of June 30, 2021, we were in compliance with these covenants. On February 12, 2018, we entered into a senior secured revolving credit agreement (the “Revolving Credit Agreement”) with JPMorgan Chase Bank, N.A. and Bank of America, N.A. that provided for a senior secured revolving credit facility (the “Facility”) in the aggregate principal amount of $50.0 million (the “Revolving Commitment”), which could be increased to up to $100.0 million, subject to obtaining additional lender commitments and certain approvals and satisfying certain other conditions. The Facility includes a $5.0 million sublimit for swingline loans and a $2.5 million sublimit for letters of credit. The Facility was scheduled to mature on February 12, 2020. On April 15, 2019, we entered into the First Amendment to Revolving Credit Agreement (the “First Amendment”). Pursuant to the First Amendment, Wells Fargo Bank, N.A., was added as a lender and the Revolving Commitment was increased to $75.0 million, which may be further increased to $125.0 million subject to obtaining additional lender commitments and certain approvals and satisfying other conditions. The scheduled maturity date of the Facility was extended to April 15, 2022. Borrowings under the Facility will generally bear interest at a prime rate plus 1.0% or, at our option, an adjusted LIBOR rate for the interest period in effect for such borrowing plus 1.5%. The proceeds of the loans and letters of credit under the Facility are to be used only for our general business purposes and working capital. Letters of credit are to be issued only to support our business operations. As of June 30, 2021, we did not have any borrowings outstanding under the Facility. Under the Revolving Credit Agreement, we are required to maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0. Additionally, the Revolving Credit Agreement contains customary affirmative and negative covenants, including covenants limiting our ability to, among other things, grant liens, incur debt, effect certain mergers, make certain investments, dispose of assets, enter into certain transactions, including swap agreements and sale and leaseback transactions, pay dividends or distributions on our capital stock, and enter into transactions with affiliates, in each case subject to customary exceptions for a facility of the size and type of the Facility. As of June 30, 2021, we were in compliance with all covenants related to the Revolving Credit Agreement. As of June 30, 2021 and December 31, 2020, the carrying value of our total long-term debt approximated its fair value as of such date. The fair value of our long-term debt is estimated based on the borrowing rates currently available to us for bank loans with similar terms and maturities.

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments	7 . DERIVATIVE INSTRUMENTS In December 2017, we entered into a floating-to-fixed interest rate swap agreement to limit the exposure to floating interest rate risk related to the Term Loans. We do not hold derivative instruments for trading or speculative purposes. The interest rate swap agreement effectively converts a portion of the variable interest rate payments to fixed interest rate payments. We account for our derivatives under ASC Topic 815, “Derivatives and Hedging,” and recognize all derivative instruments in the consolidated balance sheets at fair value as either short-term or long-term assets or liabilities based on their anticipated settlement date. See Note 8, “Fair Value of Financial Instruments”. We have elected not to designate our interest rate swap as a hedge; therefore, changes in the fair value of the derivative instrument are recognized in our consolidated statements of income within Other income (expense), net. The objective of the interest rate swap is to reduce the variability in the forecasted interest payments of the Term Loans, which is based on a one-month LIBOR rate versus a fixed interest rate of 2.54% on a notional value of $35.5 million. Under the terms of the interest rate swap agreement, we receive quarterly variable interest payments based on the LIBOR rate and pay interest at a fixed rate. The interest rate swap agreement has a maturity date of September 7, 2025. For the three and six months ended June 30, 2021, we recorded gains of less than $0.1 million and $0.7 million, respectively, for the change in fair value of the interest rate swap, and for the three and six months ended June 30, 2020, we recorded losses of $0.1 million and $1.7 million, respectively, for the change in fair value of the interest rate swap. The change in the fair value of the interest rate swap is included in Other income (expense), net in the consolidated statements of income.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	8 . FAIR VALUE OF FINANCIAL INSTRUMENTS Our financial instruments consist primarily of cash and cash equivalents, accounts receivable, accounts payable, funds held for clients, client funds obligation and long-term debt. The carrying amount of cash and cash equivalents, accounts receivable, accounts payable, funds held for clients and client funds obligation approximates fair value due to the short-term nature of the instruments. See Note 6 for discussion of the fair value of our debt. As discussed in Note 2, we invest the funds held for clients in money market funds, demand deposit accounts, commercial paper with a maturity duration less than three months and certificates of deposit, and classify these items as cash and cash equivalents within the funds held for clients line item in the consolidated balance sheets. Short-term investments in commercial paper and certificates of deposit with an original maturity duration greater than three months are classified as available-for-sale securities, and are also included within the funds held for clients line item. These available-for-sale securities are recognized in the consolidated balance sheets at fair value, which approximates the amortized cost of the securities. All of our available-for-sale securities had expected maturity dates of twelve months or less at June 30, 2021. As discussed in Note 7, during the year ended December 31, 2017, we entered into an interest rate swap. The interest rate swap is measured on a recurring basis based on quoted prices for similar financial instruments and other observable inputs recognized at fair value. The accounting standard for fair value measurements establishes a three-level fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: • Level 1 – Observable inputs such as quoted prices in active markets • Level 2 – Inputs other than quoted prices in active markets for identical assets or liabilities that are observable either directly or indirectly or quoted prices that are not active • Level 3 – Unobservable inputs in which there is little or no market data Included in the following tables are the Company’s major categories of assets and liabilities measured at fair value on a recurring basis as of June 30, 2021 and December 31, 2020: June 30, 2021 Level 1 Level 2 Level 3 Total Assets: Commercial paper $ — $ 142,164 $ — $ 142,164 Certificates of deposit $ — $ 25,000 $ — $ 25,000 Liabilities: Interest rate swap $ — $ 2,033 $ — $ 2,033 December 31, 2020 Level 1 Level 2 Level 3 Total Assets: Commercial paper $ — $ 99,929 $ — $ 99,929 Certificates of deposit $ — $ 80,000 $ — $ 80,000 Liabilities: Interest rate swap $ — $ 2,738 $ — $ 2,738

Employee Savings Plan and Emplo

Employee Savings Plan and Employee Stock Purchase Plan	6 Months Ended
	Jun. 30, 2021
Compensation Related Costs [Abstract]
Employee Savings Plan and Employee Stock Purchase Plan	9 . EMPLOYEE SAVINGS PLAN AND EMPLOYEE STOCK PURCHASE PLAN Employees over the age of 18 who have completed ninety days of service are eligible to participate in our 401(k) plan. We have made a Qualified Automatic Contribution Arrangement (“QACA”) election, whereby the Company matches the contribution of our employees equal to 100% of the first 1% of salary deferrals and 50% of salary deferrals between 2% and 6%, up to a maximum matching contribution of 3.5% of an employee’s salary each plan year. We are allowed to make additional discretionary matching contributions and discretionary profit sharing contributions. Employees are 100% vested in amounts attributable to salary deferrals and rollover contributions. The QACA matching contributions as well as the discretionary matching and profit sharing contributions vest 100% after two years of employment from the date of hire. Matching contributions were $2.6 million and $5.9 million for the three and six months ended June 30, 2021, respectively. Matching contributions were $2.2 million and $4.4 million for the three and six months ended June 30, 2020, respectively. The ESPP has overlapping offering periods, with each offering period lasting approximately 24 months. At the beginning of each offering period, eligible employees may elect to contribute, through payroll deductions, up to 10% of their compensation, subject to an annual per-employee maximum of $25,000. Eligible employees purchase shares of the Company’s common stock at a price equal to 85% of the fair market value of the shares on the exercise date. The maximum number of shares that may be purchased by a participant during each offering period is 2,000 shares, subject to limits specified by the Internal Revenue Service. The shares reserved for purposes of the ESPP are shares we purchase in the open market. The maximum aggregate number of shares of the Company’s common stock that may be purchased by all participants under the ESPP is 2.0 million shares. Eligible employees purchased 24,717 and 32,764 shares of the Company’s common stock under the ESPP during the six months ended June 30, 2021 and 2020, respectively. Compensation expense related to the ESPP is recognized on a straight-line basis over the requisite service period. Our compensation expense related to the ESPP was $0.7 million and $1.4 million for the three and six months ended June 30, 2021, respectively. Our compensation expense related to the ESPP was $0.4 million and $0.8 million for the three and six months ended June 30, 2020, respectively.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	1 0 . EARNINGS PER SHARE Basic earnings per share is based on the weighted average number of shares of common stock outstanding for the period. Diluted earnings per share is computed in a similar manner to basic earnings per share after assuming the issuance of shares of common stock for all potentially dilutive shares of restricted stock whether or not they are vested. In accordance with ASC Topic 260, “Earnings Per Share,” the two-class method determines earnings for each class of common stock and participating securities according to an earnings allocation formula that adjusts the income available to common stockholders for dividends or dividend equivalents and participation rights in undistributed earnings. Certain unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents are participating securities and, therefore, are included in computing earnings per share pursuant to the two-class method. The unvested shares of restricted stock granted in 2015 are considered participating securities, while all other unvested shares of restricted stock are not considered participating securities. As of December 31, 2020, all shares of restricted stock granted in 2015 have vested. The following is a reconciliation of net income and the shares of common stock used in the computation of basic and diluted earnings per share: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Numerator: Net income $ 52,278 $ 28,589 $ 116,894 $ 91,604 Less: income allocable to participating securities — (13 ) — (39 ) Income allocable to common shares $ 52,278 $ 28,576 $ 116,894 $ 91,565 Add back: undistributed earnings allocable to participating securities $ — $ 13 $ — $ 39 Less: undistributed earnings reallocated to participating securities — (13 ) — (39 ) Numerator for diluted earnings per share $ 52,278 $ 28,576 $ 116,894 $ 91,565 Denominator: Basic weighted average shares outstanding 57,853 57,568 57,797 57,611 Dilutive effect of unvested restricted stock 239 669 338 752 Diluted weighted average shares outstanding 58,092 58,237 58,135 58,363 Earnings per share: Basic $ 0.90 $ 0.50 $ 2.02 $ 1.59 Diluted $ 0.90 $ 0.49 $ 2.01 $ 1.57

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	11. STOCK-BASED COMPENSATION Restricted Stock Awards During the six months ended June 30, 2021, we issued an aggregate of 176,060 restricted shares of common stock to certain non-executive employees and non-employee members of our board of directors under the Paycom Software, Inc. 2014 Long-Term Incentive Plan (the “LTIP”), consisting of 42,934 shares subject to market-based vesting conditions (“Market-Based Shares”) and 133,126 shares subject to time-based vesting conditions (“Time-Based Shares”). The Market-Based Shares will vest % on the first date, if any, that the arithmetic average of the Company’s volume weighted average price on each of the twenty consecutive trading days immediately preceding such date (the “VWAP Value”) equals or exceeds $ per share and % on the first date, if any, that the Company’s VWAP Value equals or exceeds $ per share, in each case provided that (i) such date occurs on or before the eighth anniversary of the grant date and (ii) the recipient is employed by, or providing services to, the Company on the applicable vesting date, and subject to the terms and conditions of the LTIP and the applicable restricted stock award agreement. The Time-Based Shares granted to non-executive employees will vest over periods ranging from three to four years, Of the 133,126 Time-Based Shares mentioned above, on May 3, 2021, we issued an aggregate of 3,558 Time-Based Shares to the non-employee members of our board of directors. Such shares of restricted stock will cliff-vest on the seventh day following the first anniversary of the date of grant, provided that such director is providing services to the Company through the applicable vesting date, and subject to the terms and conditions of the LTIP and the applicable restricted stock award agreement . The following table summarizes restricted stock awards activity for the six months ended June 30, 2021: Time-Based Market-Based Restricted Stock Awards Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value Unvested shares of restricted stock outstanding at December 31, 2020 559.8 $ 156.48 1,748.5 $ 115.91 Granted 133.1 $ 425.11 42.9 $ 331.35 Vested (274.0 ) $ 131.63 — $ — Forfeited (27.3 ) $ 265.92 (3.3 ) $ 331.35 Unvested shares of restricted stock outstanding at June 30, 2021 391.6 $ 257.56 1,788.1 $ 120.68 Performance-Based Restricted Stock Units In February 2021, the Compensation Committee of the Board of Directors authorized the granting of performance-based restricted stock units (“PSUs”) to certain executive officers pursuant to the LTIP (the “PSU Awards”). Each PSU granted under the LTIP represents a notional share of the Company’s common stock. The PSU Awards represented an aggregate of 52,470 target units that may increase to an aggregate of 131,176 awarded units based upon the Company’s performance over two separate performance periods: (i) a two-year performance period commencing on January 1, 2021 and ending on December 31, 2022 (the “Two-Year Performance Period”); and (ii) a three-year performance period commencing on January 1, 2021 and ending on December 31, 2023 (the “Three-Year Performance Period”). Up to 25% of the PSUs will be eligible to vest no later than March 1, 2023, for the Two-Year Performance Period, and up to 75% of the PSUs will be eligible to vest no later than February 29, 2024, for the Three-Year Performance Period, provided that the grantee remains employed by or providing services to the Company on the applicable vesting date, and subject to the terms and conditions of the LTIP and the Restricted Stock Unit Award Agreement – Performance Based Vesting (the “PSU Award Agreement”). The number of PSUs that will vest and be converted into shares of common stock will depend on the Company’s “Relative Total Stockholder Return” (“Relative TSR”), expressed as a percentile ranking of the Company’s “Total Stockholder Return” (“TSR”) as compared to the Company’s peer group set forth in the PSU Award Agreement. For purposes of the PSU Awards, TSR is determined by dividing (i) the sum of (A) the average daily volume weighted average price (or “VWAP” as defined in the PSU Award Agreement) of a share of the Company’s common stock or the common stock of a peer company, as applicable, during the final 60 34 On April 2, 2021, Jeffrey D. York resigned from his position as Chief Sales Officer of the Company and accepted a new role as Leadership Strategist of the Company. In connection with the change in Mr. York’s role, the Company and Mr. York entered into a letter agreement that, among other things, (i) amends that certain Amended and Restated Executive Employment Agreement, dated March 9, 2020, by and between the Company and Mr. York, to, among other things, reflect the change in Mr. York’s role, eliminate certain executive-level benefits and remove the termination and severance provisions, and (ii) forfeits and releases the PSU award granted to Mr. York on February 10, 2021. On April 2, 2021, the Board of Directors appointed Holly Faurot to succeed Mr. York as Chief Sales Officer of the Company. In connection with her appointment, Mrs. Faurot was granted an award of PSUs pursuant to the LTIP. Consistent with the PSU awards granted to certain other executive officers of the Company on February 10, 2021, Mrs. Faurot received 5,445 target PSUs that will vest based on the Company’s total stockholder return relative to a peer group of 34 publicly traded companies, subject to the terms and conditions of the LTIP and the PSU Award Agreement. The following table summarizes PSU activity for the six months ended June 30, 2021: PSUs Units Weighted Average Grant Date Fair Value Unvested PSUs outstanding at December 31, 2020 — $ — Granted 57.9 $ 564.68 Forfeited (20.8 ) $ 579.30 Unvested PSUs outstanding at June 30, 2021 (1) 37.1 $ 556.50 (1) A maximum of 92,814 units could be awarded based upon Paycom’s Relative TSR over the applicable performance periods. For the three and six months ended June 30, 2021, our total compensation expense related to restricted stock awards and PSU awards, in the aggregate, was $23.8 million and $47.4 million, respectively. For the three and six months ended June 30, 2020, our total compensation expense related to restricted stock awards and PSU awards, in the aggregate, was $21.2 million and $37.0 million, respectively. The following table presents the unrecognized compensation cost and the related weighted average recognition period associated with unvested restricted stock awards and unvested PSU awards as of June 30, 2021. Restricted Stock Awards PSUs Unrecognized compensation cost $ 260,538 $ 17,683 Weighted average period for recognition (years) 3.9 2.3 We capitalized stock-based compensation costs related to software developed for internal use of $1.9 million and $3.4 million for the three and six months ended June 30, 2021, respectively. We capitalized stock-based compensation costs related to software developed for internal use of $2.1 million and $3.7 million for the three and six months ended June 30, 2020, respectively.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	1 2 . COMMITMENTS AND CONTINGENCIES As previously disclosed, starting in February 2019, we received subpoenas and requests from the SEC focused on whether certain of our clients were charged, and paid, an additional amount for one or more applications for which the clients were already being charged. In connection with this matter, we identified fewer than 250 affected clients, representing approximately 0.5% of our client base as of December 31, 2020. We have made diligent efforts to notify the affected clients and reached substantially all that were affected by such charges between approximately 2011 and September 2020. We have refunded approximately $3.0 million, in the aggregate, to such clients. We have also instituted a control aimed at preventing this situation from reoccurring. This issue did not have a material impact on our financial results for any prior period. In connection with this matter, we have agreed to pay a total of $0.25 million to the SEC to settle two accounting-related charges concerning our books and records and internal controls. We have neither admitted nor denied the SEC’s findings with respect to these charges. We are involved in various legal proceedings in the ordinary course of business. Although we cannot predict the outcome of these proceedings, legal matters are subject to inherent uncertainties and there exists the possibility that the ultimate resolution of these matters could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	1 3 . INCOME TAXES The Company’s effective income tax rate was 17.9% and 20.4% for the six months ended June 30, 2021 and 2020, respectively. The lower effective tax rate for the six months ended June 30, 2021 is primarily related to an increase in excess tax benefits from stock-based compensation.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements and notes have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and applicable rules and regulations of the SEC regarding interim financial statements that permit reduced disclosure for interim periods. In the opinion of management, the unaudited consolidated financial statements reflect all adjustments of a normal recurring nature that are necessary for a fair presentation of the results for the interim periods presented. These unaudited consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and related notes presented in the Form 10-K. The results of operations for the three and six months ended June 30, 2021 are not necessarily indicative of the results expected for the full year.
Recently Adopted / Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements In January 2021, we adopted Accounting Standards Update (“ASU”) No. 2019-12, “Income Taxes (Topic 740) Simplifying the Accounting for Income Taxes” (“ASU 2019-12”) utilizing the prospective transition method. The amendments in ASU 2019-12 eliminate certain exceptions related to the approach for intraperiod tax allocation, the methodology for calculating income tax in an interim period and the recognition of deferred tax liabilities for outside basis differences. ASU 2019-12 also clarifies and simplifies other aspects of the accounting for income taxes. The adoption of this guidance did not have a material impact on our unaudited interim consolidated financial statements. In January 2020, we adopted ASU No. 2018-15, “Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force)” (“ASU 2018-15”) utilizing the prospective transition method. ASU 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The adoption of this guidance did not have a material impact on our unaudited interim consolidated financial statements. In January 2020, we adopted ASU No. 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement” (“ASU 2018-13”). ASU No. 2018-13 modifies the disclosure requirements in Topic 820, “Fair Value Measurement,” based on the FASB Concepts Statement, “Conceptual Framework for Financial Reporting – Chapter 8: Notes to Financial Statements,” including consideration of costs and benefits. The adoption of ASU 2018-13 removed or modified disclosure requirements retrospectively to all periods presented, whereas any new requirements have been applied prospectively from the adoption date. The adoption of this guidance did not have a material impact on our unaudited interim consolidated financial statements. Recently Issued Accounting Pronouncements In March 2020, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2020-04, “Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting” (“ASU 2020-04”). ASU 2020-04 provides temporary optional expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform. Our interest-bearing notes bear interest, at our option, at either (a) a prime rate plus 1.0% or (b) fluctuating interest rates based on LIBOR. If LIBOR ceases to exist, we may need to renegotiate our loan documents and we cannot predict what alternative index would be negotiated with our lenders. ASU 2020-04 is currently effective and upon adoption may be applied prospectively to contract modifications made on or before December 31, 2022. We are currently assessing the impact that this guidance will have on our consolidated financial statements . In January 2021, the FASB issued ASU No. 2021-01, “Reference Rate Reform (Topic 848) Scope” (“ASU 2021-01”), which clarifies that certain optional expedients and exceptions in Topic 848 for contract modifications and hedge accounting apply to derivative instruments that are affected by the discounting transition. ASU 2021-01 amends the expedients and exceptions in Topic 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. ASU 2021-01 is currently effective and upon adoption may be applied to contract modifications that change the interest rate used for margining, discounting, or contract price alignment retrospectively as of any date from the beginning of the interim period that includes March 12, 2020, or prospectively to new modifications from any date within the interim period that includes or is subsequent to January 7, 2021, up to the date that financial statements are available to be issued. We are currently assessing the impact that this guidance will have on our consolidated financial statements.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant estimates include income taxes, loss contingencies, the useful life of property and equipment, the life of our client relationships, the fair value of our stock-based awards and the fair value of our financial instruments, intangible assets and goodwill. These estimates are based on historical experience where applicable and other assumptions that management believes are reasonable under the circumstances. Actual results could materially differ from these estimates.
Prior Period Reclassifications	Prior Period Reclassifications Certain immaterial prior period amounts have been reclassified to conform to the current period presentation.
Seasonality	Seasonality Our revenues are seasonal in nature. Recurring revenues include revenues relating to the annual processing of payroll forms, such as Form W-2, Form 1099, and Form 1095 and revenues from processing unscheduled payroll runs (such as bonuses) for our clients. As payroll forms are typically processed in the first quarter of the year, first quarter revenues and margins are generally higher than in subsequent quarters. These seasonal fluctuations in revenues can also have an impact on gross profits. Historical results impacted by these seasonal trends should not be considered a reliable indicator of our future results of operations.
Employee Stock Purchase Plan	Employee Stock Purchase Plan An award issued under the Paycom Software, Inc. Employee Stock Purchase Plan (the “ESPP”) is classified as a share-based liability and recognized at the fair value of the award. Expense is recognized, net of estimated forfeitures, on a straight-line basis over the requisite service period.
Funds Held for Clients and Client Funds Obligation	Funds Held for Clients and Client Funds Obligation As part of our payroll and tax filing application, we (i) collect client funds to satisfy their respective federal, state and local employment tax obligations, (ii) remit such funds to the appropriate taxing authorities and accounts designated by our clients, and (iii) manage client tax filings and any related correspondence with taxing authorities. Amounts collected by us from clients for their federal, state and local employment taxes are invested by us, and we earn interest on these funds during the interval between receipt and disbursement. These investments are shown in our consolidated balance sheets as funds held for clients, and the offsetting liability for the tax filings is shown as client funds obligation. The liability is recorded in the accompanying consolidated balance sheets at the time we obtain the funds from clients. The client funds obligation represents liabilities that will be repaid within one year of the consolidated balance sheet date. As of June 30, 2021 and December 31, 2020, the funds held for clients were invested in money market funds, demand deposit accounts, commercial paper with a maturity duration less than three months and certificates of deposit. Short-term investments in commercial paper and certificates of deposit with an original maturity duration greater than three months are classified as available-for-sale securities, and are also included within the funds held for clients line item in the consolidated balance sheets. These available-for-sale securities are recorded in the consolidated balance sheets at fair value, which approximates the amortized cost of the securities. Funds held for clients are classified as a current asset in the consolidated balance sheets because the funds are held solely to satisfy the client funds obligation.
Stock Repurchase Plan	Stock Repurchase Plan In May 2016, our Board of Directors authorized a stock repurchase plan allowing for the repurchase of shares of our common stock in open market transactions at prevailing market prices, in privately negotiated transactions or by other means in accordance with federal securities laws, including Rule 10b5-1 programs. Since the initial authorization of the stock repurchase plan, our Board of Directors has amended and extended and authorized new stock repurchase plans from time to time. Most recently, in May 2021, our Board of Directors authorized the repurchase of up to $300.0 million of our common stock. As of June 30, 2021, there was $299.5 million available for repurchases under our stock repurchase plan. Our stock repurchase plan may be suspended or discontinued at any time. The actual timing, number and value of shares repurchased depends on a number of factors, including the market price of our common stock, general market and economic conditions, shares withheld for taxes associated with the vesting of restricted stock and other corporate considerations. The current stock repurchase plan will expire on May 13, 2023. During the six months ended June 30, 2021, we repurchased an aggregate of 94,997 shares of our common stock at an average cost of $340.59 per share, all of which were shares withheld to satisfy tax withholding obligations for certain employees upon the vesting of restricted stock.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Jun. 30, 2021
Revenue From Contract With Customer [Abstract]
Summary of Changes in Deferred Revenue Related to Material Right Performance Obligations	Changes in deferred revenue related to material right performance obligations as of June 30, 2021 and 2020 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Balance, beginning of period $ 88,993 $ 78,455 $ 86,826 $ 76,244 Deferral of revenue 8,536 6,601 15,498 12,486 Recognition of unearned revenue (5,071 ) (4,169 ) (9,866 ) (7,843 ) Balance, end of period $ 92,458 $ 80,887 $ 92,458 $ 80,887
Summary of Asset Balances and Related Amortization Expense For Contract Costs	The following tables present the asset balances and related amortization expense for these contract costs: As of and for the Three Months Ended June 30, 2021 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 244,339 $ 13,701 $ (9,132 ) $ 248,908 Costs to fulfill a contract $ 214,969 $ 21,934 $ (7,391 ) $ 229,512 As of and for the Three Months Ended June 30, 2020 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 208,960 $ 7,982 $ (7,480 ) $ 209,462 Costs to fulfill a contract $ 158,321 $ 19,071 $ (5,451 ) $ 171,941 As of and for the Six Months Ended June 30, 2021 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 232,583 $ 34,242 $ (17,917 ) $ 248,908 Costs to fulfill a contract $ 199,593 $ 44,112 $ (14,193 ) $ 229,512 As of and for the Six Months Ended June 30, 2020 Beginning Capitalization Ending Balance of Costs Amortization Balance Costs to obtain a contract $ 194,964 $ 29,166 $ (14,668 ) $ 209,462 Costs to fulfill a contract $ 143,788 $ 38,580 $ (10,427 ) $ 171,941

Property and Equipment (Tables)

Property and Equipment (Tables)	6 Months Ended
	Jun. 30, 2021
Property Plant And Equipment [Abstract]
Schedule of Property and Equipment and Accumulated Depreciation and Amortization	Property and equipment and accumulated depreciation and amortization were as follows: June 30, 2021 December 31, 2020 Property and equipment Software and capitalized software costs $ 170,635 $ 144,190 Buildings 116,025 115,772 Computer equipment 76,394 68,181 Rental clocks 27,900 25,474 Furniture, fixtures and equipment 20,786 19,829 Other 7,118 7,016 418,858 380,462 Less: accumulated depreciation and amortization (208,424 ) (178,111 ) 210,434 202,351 Construction in progress 81,529 53,833 Land 29,034 29,034 Property and equipment, net $ 320,997 $ 285,218

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, Net (Tables)	6 Months Ended
	Jun. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	All of our intangible assets other than goodwill are considered to have definite lives and, as such, are subject to amortization. The following table presents the components of intangible assets within our consolidated balance sheets: June 30, 2021 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Naming rights 15.4 $ 60,199 $ (325 ) $ 59,874 Trade name 1.0 3,194 (2,981 ) 213 Total $ 63,393 $ (3,306 ) $ 60,087 December 31, 2020 Weighted Average Remaining Accumulated Useful Life Gross Amortization Net (Years) Intangibles: Trade name 1.5 $ 3,194 $ (2,875 ) $ 319 Total $ 3,194 $ (2,875 ) $ 319

Long-Term Debt, Net (Tables)

Long-Term Debt, Net (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consisted of the following: June 30, 2021 December 31, 2020 Net term note to bank due September 7, 2025 $ 30,025 $ 30,894 Total long-term debt, net (including current portion) 30,025 30,894 Less: Current portion (1,775 ) (1,775 ) Total long-term debt, net $ 28,250 $ 29,119

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Schedule of Major Categories of Assets and Liabilities Measured at Fair Value on Recurring Basis	Included in the following tables are the Company’s major categories of assets and liabilities measured at fair value on a recurring basis as of June 30, 2021 and December 31, 2020: June 30, 2021 Level 1 Level 2 Level 3 Total Assets: Commercial paper $ — $ 142,164 $ — $ 142,164 Certificates of deposit $ — $ 25,000 $ — $ 25,000 Liabilities: Interest rate swap $ — $ 2,033 $ — $ 2,033 December 31, 2020 Level 1 Level 2 Level 3 Total Assets: Commercial paper $ — $ 99,929 $ — $ 99,929 Certificates of deposit $ — $ 80,000 $ — $ 80,000 Liabilities: Interest rate swap $ — $ 2,738 $ — $ 2,738

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Earnings Per Share	The following is a reconciliation of net income and the shares of common stock used in the computation of basic and diluted earnings per share: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Numerator: Net income $ 52,278 $ 28,589 $ 116,894 $ 91,604 Less: income allocable to participating securities — (13 ) — (39 ) Income allocable to common shares $ 52,278 $ 28,576 $ 116,894 $ 91,565 Add back: undistributed earnings allocable to participating securities $ — $ 13 $ — $ 39 Less: undistributed earnings reallocated to participating securities — (13 ) — (39 ) Numerator for diluted earnings per share $ 52,278 $ 28,576 $ 116,894 $ 91,565 Denominator: Basic weighted average shares outstanding 57,853 57,568 57,797 57,611 Dilutive effect of unvested restricted stock 239 669 338 752 Diluted weighted average shares outstanding 58,092 58,237 58,135 58,363 Earnings per share: Basic $ 0.90 $ 0.50 $ 2.02 $ 1.59 Diluted $ 0.90 $ 0.49 $ 2.01 $ 1.57

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2021
Summary of Nonvested Restricted Stock Awards and PSU Activity	The following table summarizes restricted stock awards activity for the six months ended June 30, 2021: Time-Based Market-Based Restricted Stock Awards Restricted Stock Awards Shares Weighted Average Grant Date Fair Value Shares Weighted Average Grant Date Fair Value Unvested shares of restricted stock outstanding at December 31, 2020 559.8 $ 156.48 1,748.5 $ 115.91 Granted 133.1 $ 425.11 42.9 $ 331.35 Vested (274.0 ) $ 131.63 — $ — Forfeited (27.3 ) $ 265.92 (3.3 ) $ 331.35 Unvested shares of restricted stock outstanding at June 30, 2021 391.6 $ 257.56 1,788.1 $ 120.68
Summary of Unrecognized Compensation Cost and Related Weighted Average Recognition Period Associated with Unvested restricted Stock Awards and Unvested PSU Awards	The following table presents the unrecognized compensation cost and the related weighted average recognition period associated with unvested restricted stock awards and unvested PSU awards as of June 30, 2021. Restricted Stock Awards PSUs Unrecognized compensation cost $ 260,538 $ 17,683 Weighted average period for recognition (years) 3.9 2.3
Performance-Based Restricted Stock Units [Member]
Summary of Nonvested Restricted Stock Awards and PSU Activity	The following table summarizes PSU activity for the six months ended June 30, 2021: PSUs Units Weighted Average Grant Date Fair Value Unvested PSUs outstanding at December 31, 2020 — $ — Granted 57.9 $ 564.68 Forfeited (20.8 ) $ 579.30 Unvested PSUs outstanding at June 30, 2021 (1) 37.1 $ 556.50 (1) A maximum of 92,814 units could be awarded based upon Paycom’s Relative TSR over the applicable performance periods.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2021	May 31, 2021
Summary Of Significant Accounting Policy [Line Items]
Debt instrument basis spread on variable rate	1.00%
Restricted Stock [Member]
Summary Of Significant Accounting Policy [Line Items]
Shares withheld to satisfy tax withholding obligations	94,997
Stock Repurchase Plan [Member]
Summary Of Significant Accounting Policy [Line Items]
Available authorized repurchase amount	$ 299,500,000
Stock repurchase plan expiration date	May 13, 2023
Stock repurchased, average costs per share	$ 340.59
Maximum [Member] | Stock Repurchase Plan [Member]
Summary Of Significant Accounting Policy [Line Items]
Stock repurchase plan, authorized amount		$ 300,000,000
Accounting Standards Update 2019-12 [Member]
Summary Of Significant Accounting Policy [Line Items]
Accounting standards update, adoption date	Jan. 1, 2021
Accounting standards update, adopted	true
Accounting standards update, immaterial effect	true
Accounting Standards Update 2018-15 [Member]
Summary Of Significant Accounting Policy [Line Items]
Accounting standards update, adoption date	Jan. 1, 2020
Accounting standards update, adopted	true
Accounting standards update, immaterial effect	true
Accounting Standards Update 2018-13 [Member]
Summary Of Significant Accounting Policy [Line Items]
Accounting standards update, adoption date	Jan. 1, 2020
Accounting standards update, adopted	true
Accounting standards update, immaterial effect	true

Revenue - Summary of Changes in

Revenue - Summary of Changes in Deferred Revenue Related to Material Right Performance Obligations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue From Contract With Customer [Abstract]
Balance, beginning of period	$ 88,993	$ 78,455	$ 86,826	$ 76,244
Deferral of revenue	8,536	6,601	15,498	12,486
Recognition of unearned revenue	(5,071)	(4,169)	(9,866)	(7,843)
Balance, end of period	$ 92,458	$ 80,887	$ 92,458	$ 80,887

Revenue - Additional Informatio

Revenue - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021
Revenue From Contract With Customer [Abstract]
Deferred revenue expect to recognize description	We expect to recognize $7.7 million of deferred revenue related to material right performance obligations in the remainder of 2021, $14.2 million of such deferred revenue in 2022, and $70.6 million of such deferred revenue thereafter.

Revenue - Additional Informat_2

Revenue - Additional Information (Detail 1) $ in Millions	Jun. 30, 2021USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-07-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Deferred revenue expect to recognize amount	$ 7.7
Deferred revenue expect to recognize period	6 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Deferred revenue expect to recognize amount	$ 14.2
Deferred revenue expect to recognize period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Deferred revenue expect to recognize amount	$ 70.6
Deferred revenue expect to recognize period

Revenue - Summary of Asset Bala

Revenue - Summary of Asset Balances and Related Amortization Expense For Contract Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Costs to Obtain a Contract [Member]
Capitalized Contract Cost [Line Items]
Beginning Balance	$ 244,339	$ 208,960	$ 232,583	$ 194,964
Capitalization of Costs	13,701	7,982	34,242	29,166
Amortization	(9,132)	(7,480)	(17,917)	(14,668)
Ending Balance	248,908	209,462	248,908	209,462
Costs to Fulfill a Contract [Member]
Capitalized Contract Cost [Line Items]
Beginning Balance	214,969	158,321	199,593	143,788
Capitalization of Costs	21,934	19,071	44,112	38,580
Amortization	(7,391)	(5,451)	(14,193)	(10,427)
Ending Balance	$ 229,512	$ 171,941	$ 229,512	$ 171,941

Property and Equipment - Schedu

Property and Equipment - Schedule of Property and Equipment and Accumulated Depreciation and Amortization (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property and Equipment [Line Items]
Property and equipment, gross	$ 418,858	$ 380,462
Less: accumulated depreciation and amortization	(208,424)	(178,111)
Property and equipment, net	320,997	285,218
Software and Capitalized Software Costs [Member]
Property and Equipment [Line Items]
Property and equipment, gross	170,635	144,190
Buildings [Member]
Property and Equipment [Line Items]
Property and equipment, gross	116,025	115,772
Computer Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	76,394	68,181
Rental Clocks [Member]
Property and Equipment [Line Items]
Property and equipment, gross	27,900	25,474
Furniture, Fixtures and Equipment [Member]
Property and Equipment [Line Items]
Property and equipment, gross	20,786	19,829
Other [Member]
Property and Equipment [Line Items]
Property and equipment, gross	7,118	7,016
Property and Equipment, net, Excluding Land and Construction in Progress [Member]
Property and Equipment [Line Items]
Property and equipment, net	210,434	202,351
Construction in Progress [Member]
Property and Equipment [Line Items]
Property and equipment, net	81,529	53,833
Land [Member]
Property and Equipment [Line Items]
Property and equipment, net	$ 29,034	$ 29,034

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Property and Equipment [Line Items]
Computer software development costs capitalized	$ 13,700	$ 11,000	$ 26,000	$ 20,700
Interest costs incurred	300	400	700	800
Interest costs capitalized	300	400	700	800
Retainage amount included in construction in progress	3,900		3,900		$ 3,500
Depreciation and amortization	8,380	6,774	16,096	13,059
Property and Equipment [Member]
Property and Equipment [Line Items]
Depreciation and amortization	$ 15,600	$ 13,000	$ 30,500	$ 25,200

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets, Net - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill	$ 51,889,000		$ 51,889,000		$ 51,889,000
Goodwill impairment amount			0
Amortization of intangible assets	400,000		400,000	$ 100,000
Estimated remaining amortization expense for remainder of 2021	2,100,000		2,100,000
Estimated remaining amortization expense in 2022	4,000,000		4,000,000
Estimated remaining amortization expense in 2023	3,900,000		3,900,000
Estimated remaining amortization expense in 2024	3,900,000		3,900,000
Estimated remaining amortization expense in 2025	3,900,000		3,900,000
Estimated remaining amortization expense in 2026	3,900,000		3,900,000
Maximum [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization of intangible assets		$ 100,000
Naming Rights [Member] | Minimum [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Estimated annual payments for intangible asset agreement			4,000,000
Naming Rights [Member] | Maximum [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Estimated annual payments for intangible asset agreement			6,100,000
Goodwill [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill	$ 51,900,000		$ 51,900,000		$ 51,900,000

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets, Net - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Gross	$ 63,393	$ 3,194
Accumulated Amortization	(3,306)	(2,875)
Net	60,087	319
Naming Rights [Member]
Finite Lived Intangible Assets [Line Items]
Gross	60,199
Accumulated Amortization	(325)
Net	$ 59,874
Weighted average remaining useful life	15 years 4 months 24 days
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Gross	$ 3,194	3,194
Accumulated Amortization	(2,981)	(2,875)
Net	$ 213	$ 319
Weighted average remaining useful life	1 year	1 year 6 months

Long-Term Debt, Net - Schedule

Long-Term Debt, Net - Schedule of Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total long-term debt, net (including current portion)	$ 30,025	$ 30,894
Less: Current portion	(1,775)	(1,775)
Total long-term debt, net	28,250	29,119
Net Term Note to Bank Due September 7, 2025 [Member]
Debt Instrument [Line Items]
Term note to bank	$ 30,025	$ 30,894

Long-Term Debt, Net - Schedul_2

Long-Term Debt, Net - Schedule of Long-Term Debt (Parenthetical) (Detail)	6 Months Ended
	Jun. 30, 2021
Net Term Note to Bank Due September 7, 2025 [Member]
Debt Instrument [Line Items]
Debt instrument maturity date	Sep. 7, 2025

Long-Term Debt, Net - Additiona

Long-Term Debt, Net - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate	1.00%
Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Line of credit facility agreement date	Feb. 12, 2018
Debt instrument, restrictive covenants	maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0
Line of credit facility, maximum borrowing capacity	$ 50,000,000
Line of credit facility maximum borrowing capacity subject to certain conditions	$ 100,000,000
Line of credit facility, maturity date	Feb. 12, 2020
Line of credit facility, borrowings outstanding	$ 0
Revolving Credit Agreement [Member] | First Amendment to the Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	75,000,000
Line of credit facility maximum borrowing capacity subject to certain conditions	$ 125,000,000
Line of credit facility, maturity date	Apr. 15, 2022
Revolving Credit Agreement [Member] | Swingline Loans [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 5,000,000
Revolving Credit Agreement [Member] | Letters of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 2,500,000
Revolving Credit Agreement [Member] | Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio required by covenants	1.25
Revolving Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Funded indebtedness to EBITDA ratio required by covenants	2
Revolving Credit Agreement [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate	1.00%
Revolving Credit Agreement [Member] | Adjusted London Interbank Offered Rate LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate	1.50%
Term Credit Agreement [Member]
Debt Instrument [Line Items]
Line of credit facility agreement date	Dec. 7, 2017
Debt instrument, restrictive covenants	maintain a fixed charge coverage ratio of not less than 1.25 to 1.0 and a funded indebtedness to EBITDA ratio of not greater than 2.0 to 1.0.
Term Credit Agreement [Member] | Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio required by covenants	1.25
Term Credit Agreement [Member] | Maximum [Member]
Debt Instrument [Line Items]
Funded indebtedness to EBITDA ratio required by covenants	2
Term Credit Agreement [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument maturity date	Sep. 7, 2025
Term Credit Agreement [Member] | Term Loan [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate	1.00%
Term Credit Agreement [Member] | Term Loan [Member] | Adjusted London Interbank Offered Rate LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument basis spread on variable rate	1.50%
Term Credit Agreement [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Unamortized debt issuance cost	$ 200,000	$ 200,000

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Details) - Interest Rate Swap [Member] - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Derivative maturity date			Sep. 7, 2025
Derivative rate received			one-month LIBOR
Derivative rate paid, percent			2.54%
Derivative Instrument, notional value	$ 35,500,000		$ 35,500,000
Derivative instrument gain (loss) under fair value		$ (100,000)	$ 700,000	$ (1,700,000)
Maximum [Member]
Derivative [Line Items]
Derivative instrument gain (loss) under fair value	$ 100,000

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021
Maximum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Available-for-sale securities maturity period	12 months

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Schedule of Major Categories of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Commercial Paper [Member]
Assets:
Assets	$ 142,164	$ 99,929
Certificates of Deposit [Member]
Assets:
Assets	25,000	80,000
Level 2 [Member] | Commercial Paper [Member]
Assets:
Assets	142,164	99,929
Level 2 [Member] | Certificates of Deposit [Member]
Assets:
Assets	25,000	80,000
Interest Rate Swap [Member]
Liabilities:
Liabilities	2,033	2,738
Interest Rate Swap [Member] | Level 2 [Member]
Liabilities:
Liabilities	$ 2,033	$ 2,738

Employee Savings Plan and Emp_2

Employee Savings Plan and Employee Stock Purchase Plan - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Defined Contribution Plan Disclosure [Line Items]
401(k) minimum age of eligibility for participation			18 years
401(k) eligibility minimum service period			90 days
Employee vested percentage in salary deferrals and roll over contributions			100.00%
Minimum period for vesting 100% contributions			2 years
Minimum period for vesting of discretionary contributions			2 years
Matching contribution	$ 2,600,000	$ 2,200,000	$ 5,900,000	$ 4,400,000
Employee stock purchase plan overlapping offering period			24 months
Employee Stock Purchase Plan [Member]
Defined Contribution Plan Disclosure [Line Items]
Employees Company's common stock shares purchase limit percentage	10.00%		10.00%
Employees Company's common stock shares purchase limit amount			$ 25,000
Purchase price of common stock expressed as a percentage of its fair market value			85.00%
Maximum number of shares that may be purchased by a participant			2,000
Share of common stock purchase maximum			2,000,000
Purchase of shares of common stock			24,717	32,764
Compensation expense related to ESPP	$ 700,000	$ 400,000	$ 1,400,000	$ 800,000
After Two Years Of Employment [Member]
Defined Contribution Plan Disclosure [Line Items]
Matching contributions, vesting percentage			100.00%
One Hundred Percent Match For Percent Of Participants Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer contribution percentage			100.00%
Percentage of salary deferrals			1.00%
50% Matching Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer contribution percentage			50.00%
Minimum [Member] | 50% Matching Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of salary deferrals			2.00%
Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of salary deferrals			3.50%
Maximum [Member] | 50% Matching Contribution [Member]
Defined Contribution Plan Disclosure [Line Items]
Percentage of salary deferrals			6.00%

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Net Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income	$ 52,278	$ 64,616	$ 28,589	$ 63,015	$ 116,894	$ 91,604
Less: income allocable to participating securities			(13)			(39)
Income allocable to common shares	52,278		28,576		116,894	91,565
Add back: undistributed earnings allocable to participating securities			13			39
Less: undistributed earnings reallocated to participating securities			(13)			(39)
Numerator for diluted earnings per share	$ 52,278		$ 28,576		$ 116,894	$ 91,565
Denominator:
Basic weighted average shares outstanding	57,853		57,568		57,797	57,611
Dilutive effect of unvested restricted stock	239		669		338	752
Diluted weighted average shares outstanding	58,092		58,237		58,135	58,363
Earnings per share:
Earnings per share, basic	$ 0.90		$ 0.50		$ 2.02	$ 1.59
Earnings per share, diluted	$ 0.90		$ 0.49		$ 2.01	$ 1.57

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	May 03, 2021shares	Apr. 02, 2021Companyshares	Feb. 28, 2021TradingDayCompanyshares	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)$ / sharesshares	Jun. 30, 2020USD ($)
Software and Capitalized Software Costs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Capitalized compensation cost | $				$ 1.9	$ 2.1	$ 3.4	$ 3.7
Chief Sales Officer Holly Faurot [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Performance share units		5,445
Number of publicly traded companies | Company		34
Restricted Stock [Member] | Share Based Compensation Award V W A P Equals Or Exceeds Five Twenty Per Share | Non Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Vesting percentage, restricted shares						50.00%
VWAP Share Price | $ / shares						$ 520
Restricted Stock [Member] | Time-Based Shares [Member] | Non Executive Employees [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights						3 years
Restricted Stock [Member] | Time-Based Shares [Member] | Non Executive Employees [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights						4 years
Restricted Stock [Member] | Share Based Compensation Award V W A P Equals Or Exceeds Six Hundred Per Share | Non Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Vesting percentage, restricted shares						50.00%
VWAP Share Price | $ / shares						$ 600
Restricted Stock [Member] | LTIP [Member] | Non-executive Employees and Non-employee Members [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted shares of common stock issued						176,060
Restricted Stock [Member] | LTIP [Member] | Market-Based Shares [Member] | Non Executive Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted shares of common stock issued						42,934
Restricted Stock [Member] | LTIP [Member] | Time-Based Shares [Member] | Non-executive Employees and Non-employee Members [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted shares of common stock issued						133,126
Restricted Stock [Member] | LTIP [Member] | Time-Based Shares [Member] | Non-Employee Members [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted shares of common stock issued	3,558
Share-based compensation arrangement by share-based payment award, award vesting rights						Such shares of restricted stock will cliff-vest on the seventh day following the first anniversary of the date of grant, provided that such director is providing services to the Company through the applicable vesting date, and subject to the terms and conditions of the LTIP and the applicable restricted stock award agreement.
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted shares of common stock issued						57,900
Performance Shares [Member] | LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Number of trading day | TradingDay			60
Number of publicly traded companies | Company			34
Performance Shares [Member] | LTIP [Member] | Executive Officers [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Performance share units			52,470
Performance Shares [Member] | LTIP [Member] | Executive Officers [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Performance share units			131,176
Performance Shares [Member] | LTIP [Member] | Two-Year Performance Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Performance period commencement date			Jan. 1, 2021
Performance period maturity date			Dec. 31, 2022
Percentage of PSUs eligible to vest			25.00%
Deadline for vesting of shares			Mar. 1, 2023
Performance Shares [Member] | LTIP [Member] | Three-Year Performance Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Performance period commencement date			Jan. 1, 2021
Performance period maturity date			Dec. 31, 2023
Percentage of PSUs eligible to vest			75.00%
Deadline for vesting of shares			Feb. 29, 2024
Restricted Stock Awards and PSU Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based compensation expense | $				$ 23.8	$ 21.2	$ 47.4	$ 37

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Nonvested Restricted Stock Awards and PSU Activity (Detail)	6 Months Ended
	Jun. 30, 2021$ / sharesshares
Time-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Unvested shares of restricted stock and PSUs outstanding at beginning of period | shares	559,800
Restricted Stock Awards and PSUs, Granted | shares	133,100
Restricted Stock Awards and PSUs, Vested | shares	(274,000)
Restricted Stock Awards and PSUs, Forfeited | shares	(27,300)
Unvested shares of restricted stock and PSUs outstanding at end of period | shares	391,600
Unvested shares of restricted stock and PSUs outstanding, Weighted Average Grant Date Fair Value, at beginning of period | $ / shares	$ 156.48
Granted, Weighted Average Grant Date Fair Value | $ / shares	425.11
Vested, Weighted Average Grant Date Fair Value | $ / shares	131.63
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	265.92
Unvested shares of restricted stock and PSUs outstanding, Weighted Average Grant Date Fair Value, at end of period | $ / shares	$ 257.56
Market-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Unvested shares of restricted stock and PSUs outstanding at beginning of period | shares	1,748,500
Restricted Stock Awards and PSUs, Granted | shares	42,900
Restricted Stock Awards and PSUs, Forfeited | shares	(3,300)
Unvested shares of restricted stock and PSUs outstanding at end of period | shares	1,788,100
Unvested shares of restricted stock and PSUs outstanding, Weighted Average Grant Date Fair Value, at beginning of period | $ / shares	$ 115.91
Granted, Weighted Average Grant Date Fair Value | $ / shares	331.35
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	331.35
Unvested shares of restricted stock and PSUs outstanding, Weighted Average Grant Date Fair Value, at end of period | $ / shares	$ 120.68
Performance-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Restricted Stock Awards and PSUs, Granted | shares	57,900
Restricted Stock Awards and PSUs, Forfeited | shares	(20,800)
Unvested shares of restricted stock and PSUs outstanding at end of period | shares	37,100	[1]
Granted, Weighted Average Grant Date Fair Value | $ / shares	$ 564.68
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	579.30
Unvested shares of restricted stock and PSUs outstanding, Weighted Average Grant Date Fair Value, at end of period | $ / shares	$ 556.50	[1]
[1]	A maximum of 92,814 units could be awarded based upon Paycom’s Relative TSR over the applicable performance periods.

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Nonvested Restricted Stock Awards and PSU Activity (Parenthetical) (Detail)	6 Months Ended
	Jun. 30, 2021shares
Performance-Based Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Units that could be awarded based upon relative TSR over applicable performance periods.	92,814

Stock-Based Compensation - Su_3

Stock-Based Compensation - Summary of Unrecognized Compensation Cost and Related Weighted Average Recognition Period Associated with Unvested restricted Stock Awards and Unvested PSU Awards (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Unrecognized compensation cost	$ 260,538
Weighted average period for recognition (years)	3 years 10 months 24 days
Performance-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Unrecognized compensation cost	$ 17,683
Weighted average period for recognition (years)	2 years 3 months 18 days

Commitment and Contingencies -

Commitment and Contingencies - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)Client
Loss Contingencies [Line Items]
Percentage of identified clients	0.50%
Refund of additional amount charged to clients	$ 3,000
Settlement payment	$ 250
Maximum [Member]
Loss Contingencies [Line Items]
Number of identified clients | Client	250

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate	17.90%	20.40%