Rental and Maintenance Expense
. Our rental and maintenance expenses decreased by 7.3% to S$9.8 million (US$7.3 million) for the year ended December 31, 2021 from S$10.6 million for the year ended December 31, 2020 primarily due to the termination of certain co-working space memberships in Japan and Spain.
. Our recruitment expense increased by 36.0% to S$10.9 million (US$8.1 million) for the year ended December 31, 2021 from S$8.0 million for the year ended December 31, 2020 primarily due to increased expenses relating to higher referral and placement fees, higher expenses associated with immigration, work permits and onboarding for foreign employees induced by COVID-19-related procedural regulations implemented by governmental authorities of respective countries to support expanded campaigns in our Singapore, Japan, Thailand, Malaysia and Philippines offices.
Transport and Travelling Expense
. Our transport and travelling expense decreased by 2.9% to S$1.5 million (US$1.1 million) for the year ended December 31, 2021 from S$1.5 million for the year ended December 31, 2020.
Telecommunication and Technology Expense
. Our telecommunication and technology expense increased by 40.0% to S$8.8 million (US$6.5 million) for the year ended December 31, 2021 from S$6.3 million for the year ended December 31, 2020 primarily due to increased costs of telecommunications infrastructure and software licenses to cope with business volume expansion in existing and new campaigns.
. Our interest expense increased by 175.1% to S$8.4 million (US$6.2 million) for the year ended December 31, 2021 from S$3.1 million for the year ended December 31, 2020 primarily due to the interest and facility fees incurred on the S$252.7 million drawdown of a term loan credit facility on March 23, 2021. The loan has since been fully paid down on October 7, 2021.
. Our other operating expenses decreased by 29.7% to S$11.1 million (US$8.2 million) for the year ended December 31, 2021 from S$15.8 million for the year ended December 31, 2020 primarily due to transaction costs associated with the initial public offering exercise that was aborted in April 2020 hence, expensed off in the year ended December 31, 2020, the forfeiture of upfront deposits paid by our subsidiary in Japan due to premature termination of the rental commitment and lower foreign exchange loss, offset by higher spending on professional and advisory fees.
Gain on Disposal of a Subsidiary
There was no disposal of any subsidiary in the year ended December 31, 2021. In the year ended December 31, 2020, we recognized a gain on disposal of a subsidiary of S$0.7 million related to the disposal of a dormant subsidiary in Indonesia.
Share of Profit from an Associate
. Our share of profit from an associate was insignificant for the year ended December 31, 2021 and for the year ended December 31, 2020.
. Our other operating income decreased by 16.0% to S$6.3 million (US$4.7 million) for the year ended December 31, 2021 from S$7.5 million for the year ended December 31, 2020 primarily due to lower government grants received by our Singapore subsidiaries in relation to the COVID-19 pandemic.
. As a result of the foregoing, our profit before income tax increased by 23.0% to S$132.1 million (US$97.7 million) for the year ended December 31, 2021 from S$107.4 million for the year ended December 31, 2020.
. Our income tax expenses increased by 32.5% to S$28.2 million (US$20.9 million) for the year ended December 31, 2021 from S$21.3 million for the year ended December 31, 2020. The higher income tax expenses were mainly due to higher taxable profits from several key operating subsidiaries, higher dividend tax arising from increased distribution of taxable dividend in 2021 from several subsidiaries, and lower tax-exempt other income received by the Singapore operations in 2021 compared to 2020.
. As a result of the foregoing, our profit for the year increased by 20.6% to S$103.8 million (US$76.8 million) for the year ended December 31, 2021 from S$86.1 million for the year ended December 31, 2020.
Other Comprehensive Income
. Our other comprehensive income was a loss of S$6.2 million (US$4.6 million) for the year ended December 31, 2021, compared to a gain of S$0.5 million for the year ended December 31, 2020, primarily due to effects of exchange rate differences on translation of foreign operations.
Total Comprehensive Income for the Year
. As a result of the foregoing, our total comprehensive income for the year increased by 12.7% to S$97.6 million (US$72.2 million) for the year ended December 31, 2021 from S$86.6 million for the year ended December 31, 2020.