1. Understand Your Filing Obligations

Every company in Singapore must file two tax returns annually:

• Estimated Chargeable Income (ECI): An estimate of your taxable income, due within three months of your Financial Year End (FYE).

• Corporate Income Tax Return (Form C-S/C-S Lite/C): A declaration of your company's actual income, due by 30 November each year.

2. Gather Essential Documents

Before you begin, prepare the following documents:

• Financial Statements: Your Profit and Loss Statement and Balance Sheet, prepared according to Singapore Financial Reporting Standards (FRS).

• Tax Computation: A detailed calculation showing how you arrived at your chargeable income, including adjustments for non-deductible expenses.

• Supporting Schedules: Additional documents for claims, like capital allowances.

• Bank Statements, Invoices, and Receipts: These serve as supporting documents for your income and expense claims.

3. Determine the Correct Tax Form

IRAS provides three different forms for filing. Choose the one that applies to your company:

• Form C-S (Lite): For companies with an annual revenue of SGD 200,000 or below.

• Form C-S: For companies with an annual revenue of SGD 5 million or below that meet certain qualifying conditions.

• Form C: For companies that do not qualify for Form C-S or C-S (Lite). This form requires you to submit your financial statements and tax computation along with the return.

4. Set Up Your CorpPass and myTax Portal Access

All corporate tax filing in Singapore is done electronically via the myTax Portal.

• Ensure your company has a CorpPass account.

• Authorise the person responsible for filing (eg:  a director or your tax agent) as an "Approver" for "Corporate Tax (Filing and Applications)" in CorpPass.

• Have your Singpass and the company's Unique Entity Number (UEN) ready for login.

5. Complete and Submit Your Filing

• Log in to the myTax Portal.

• Navigate to the Corporate Tax section and select the correct form to file.

• Carefully fill in all the required fields, using the information from your financial statements and tax computation.

• Review all entries for accuracy before submitting.

• Save the acknowledgement receipt provided by IRAS upon successful submission.