Singapore's Corporate Tax Regime: What Every Business Owner Should Know

The Corporate Tax Rate

Singapore taxes corporate income at a flat rate of 17% on chargeable income, one of the lowest headline rates among developed economies. Unlike many countries, Singapore operates a one-tier tax system: once corporate tax is paid at the company level, dividends distributed to shareholders are exempt from further tax in their hands.

Chargeable income is your company's total income less allowable deductions (such as business expenses, capital allowances, and donations). Only income accruing in or derived from Singapore, or income received in Singapore from abroad, is subject to tax.

Tax Exemptions for Start-Ups

Qualifying new companies benefit from the Start-Up Tax Exemption (SUTE) scheme for the first three consecutive Years of Assessment (YAs):

Note: To qualify for SUTE, a company must be incorporated in Singapore, be a tax resident of Singapore, and have its total share capital beneficially held directly by no more than 20 shareholders, of which at least one is an individual shareholder holding at least 10% of issued ordinary shares. Shares held through nominees or holding companies may affect eligibility. Investment holding companies and those with investment income as their principal source do not qualify.

Partial Tax Exemption (All Other Companies)

After the first three years (or for companies that do not qualify for SUTE), a Partial Tax Exemption (PTE) still applies:

Filing Obligations

Singapore companies have two key tax filing obligations each year:

Goods & Services Tax (GST)

GST is a broad-based consumption tax levied at 9% on the supply of goods and services in Singapore, as well as on imports of goods.

Mandatory registration applies once your taxable turnover exceeds or is expected to exceed S$1 million within the next 12 months. You must apply for registration within 30 days of the date you became liable.

Voluntary registration is available for businesses below the threshold. This allows you to claim input tax credits on business purchases, which is useful if you have significant expenses or supply to GST-registered businesses.

Once registered, GST returns are filed either monthly or quarterly depending on the accounting period assigned by IRAS. GST collected must be remitted to IRAS within one month after the end of each accounting period.

Understanding the Year of Assessment

Singapore taxes income on a preceding-year basis. The Year of Assessment (YA) 2025 refers to income earned in the financial year ending in 2024. This means your company's financial year end determines which YA your income falls under.

For example, if your financial year ends 31 December 2024, that income is assessed in YA 2025, and tax due is payable in 2025. You can choose any financial year end when you incorporate (it does not have to be 31 December).

Annual Budget Rebates

Each year, the Singapore Budget may introduce Corporate Income Tax (CIT) rebates that reduce effective tax payable for that Year of Assessment. For example, the YA 2026 Budget announced a CIT Rebate of 50% of tax payable (capped at a total benefit of S$40,000), along with a S$1,500 minimum Cash Grant for companies with at least one local employee in 2025.

These rebates change annually and are not guaranteed year to year. Always check the IRAS website or consult your tax advisor after each Budget announcement to understand the rebates applicable to your current Year of Assessment.

Withholding Tax

When a Singapore company makes certain payments to non-resident companies or individuals, such as royalties, interest, management fees, and technical service fees, it may be required to withhold a portion of the payment and remit it to IRAS. Withholding tax rates vary by payment type and may be reduced under Singapore's extensive network of Double Taxation Agreements (DTAs). Check the IRAS website for the current list of Singapore's DTA partners.