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Corporate Tax Return Filing for Singapore businesses

Timely and effortless Tax Filing (Form C/C-S) with Sleek's dedicated Accountants

Filing Form C/C-S is mandatory in Singapore businesses.

  • All Singapore companies must e-File their Corporate Income Tax Returns with IRAS using Form C or Form C-S.
  • The filing deadline is by 30 November and no extensions are granted.
  • Tax return covers income earned in the preceding financial year (Year of Assessment YA).
  • Form C-S are for companies with lower annual revenue ($5million or below) taxed at the prevailing corporate tax rate of 17% (i.e. no concessional tax rate) and not claiming loss carry back relief, group relief, investment allowance and foreign tax credit, while others must submit Form C with financial statements.

Hassle-free and timely Income Tax Return filing with Sleek

Expert accountants ensure your books are always up-to-date, taxes, management reports and financial statements are ready and filed timely.

Timely Tax Return filing for your business so it remains compliant, and avoids any penalties.

Cloud-based document management system for centralized and easy access to all documents

Transparent all-inclusive pricing that covers all your business needs, avoiding surprises and penalties.

Proprietary cloud bookkeeping platform built for small businesses so you don’t need to pay separately for expensive platforms.

Corporate Tax Return filing is offered as a part of Sleek’s Accounting Plans.

Pricing plans for every company size

Save time and money with automation and our dedicated accountant services. Choose the plan that suits you, based on your average monthly expenses.

Select your monthly expenses threshold:

Monthly expenses is your total spend to run your company, including salaries, rent, cost of goods/services and operational costs.

Accounting &

Billed annually, per financial year


Billed annually, per financial year


Billed annually, per financial year


It is a record of year-round entries for the financial year, including balance sheet, profit and loss statement, and ledger accounts.

Our SleekBooks accounting solution will help automate a lot of these processes to help you save time and money.




Dedicated Accountant

Get a dedicated accountant to support with managing your books. Included with all Sleek accounting packages.

Unaudited Financial Statements

Unaudited financial statements provide an accurate picture of a company's financial health. These statements must also be tabled at the AGM within 6 months from its financial year end.

Unaudited financial statements include:

- Statement of financial position
- Statement of profit or loss
- Statement of cash flows
- Statement of change in equity
- Notes to financial statements

Annual Tax Return Filing

All Singapore companies are required to e-File their Corporate Income Tax Returns with the IRAS (Inland Revenue Authority of Singapore) by 30 November using Form C or Form C-S.

Your Estimated Chargeable Income (ECI) must also be filed with the IRAS within 3 months after the Financial Year End.

Sleek will handle this process for you so you don't miss any deadlines.

SleekBooks software

SleekBooks is our proprietory accounting software solution to record all your transactions in a compliant manner. It includes multi-currency accounting, P&L and balance sheet reports and a full audit trail on all transactions.

New features are regularly added to make your experience even more seamless.

Smart Receipt submission

Send a snap of your receipts via WhatsApp or by email, or upload on the Sleek web app, and they will automatically be routed to your SleekBooks or Xero account