Singapore is widely regarded as one of the most attractive corporate tax regimes in Asia. The system is built around a low flat rate of 17%, a clean single-tier structure, generous exemptions for new and growing businesses, and recent alignment with global Pillar Two rules for large multinationals.
The headline rate: 17%
Singapore imposes a flat corporate income tax rate of 17% on chargeable income (taxable profits) of companies. This rate applies to both local and foreign companies operating in or deriving income from Singapore. There is no separate higher band for larger profits — the rate is the same regardless of the size of the company's earnings.
Single-tier tax system
Singapore operates a single-tier corporate tax system. This means corporate profits are taxed once at the corporate level, and dividends distributed to shareholders are exempt from further taxation. Shareholders receiving dividends from Singapore-resident companies do not pay additional Singapore income tax on those dividends.
Preceding-year basis of assessment
Corporate tax in Singapore is assessed on a preceding-year basis. That is, income earned in a financial year is taxed in the following Year of Assessment (YA). For example, income earned in the financial year 2024 is assessed in YA 2025.
Filing deadlines
Singapore companies have two key filings each year with IRAS:
- Estimated Chargeable Income (ECI): filed within three months of the financial year-end.
- Corporate tax return (Form C / Form C-S / Form C-S Lite): filed annually by 30 November of the relevant Year of Assessment.
Late filing or under-payment can attract penalties and interest, so it pays to track these deadlines carefully — or hand them to a tax advisor.
What is chargeable income?
For Singapore corporate tax purposes, chargeable income generally includes:
- Profits from trade or business activities;
- Royalties received in the course of business;
- Rental income from properties held for investment or business use; and
- Income from investments such as interest.
Exemptions and rebates
Several relief mechanisms reduce the effective tax burden, particularly for new and smaller companies. The most commonly used include:
- Start-up Tax Exemption (SUTE) scheme: partial exemption on qualifying chargeable income for the first three Years of Assessment of a qualifying new company.
- Partial Tax Exemption (PTE): available to most companies on qualifying chargeable income, on an ongoing basis.
- YA 2025 corporate income tax rebate: a 50% rebate of corporate tax payable, capped at SGD 40,000, including a SGD 2,000 cash grant for companies that employed at least one local employee in 2024.
15% minimum tax (Pillar Two / BEPS 2.0)
From 1 January 2025, a 15% minimum effective tax rate applies to large multinational enterprises (MNEs) with substantial revenue, aligning Singapore's regime with the OECD's Base Erosion and Profit Shifting (BEPS) 2.0 Pillar Two rules.
In practice, this affects MNE groups whose consolidated annual revenue exceeds the prescribed threshold (broadly EUR 750 million). The 17% headline rate continues to apply to most Singapore SMEs and mid-market companies — the Pillar Two rules are aimed at large multinationals only.
Sector-specific tax incentives
On top of the headline rate, Singapore offers a wide range of tax incentives for specific sectors and activities — for example, concessional rates for qualifying financial services, incentives that encourage corporate listings in Singapore, and incentives supporting fund management activities. These regimes are typically administered by the EDB or MAS, often in coordination with IRAS, and require formal application.
Singapore CIT at a glance
| Item | Detail |
|---|---|
| Headline rate | 17% flat on chargeable income |
| Tax system | Single-tier — dividends to shareholders are exempt from further tax |
| Basis of assessment | Preceding-year basis (e.g. FY 2024 income is taxed in YA 2025) |
| ECI filing | Within 3 months of financial year-end |
| Annual tax return | Form C / C-S / C-S Lite, due 30 November of the YA |
| YA 2025 rebate | 50% of tax payable, capped at SGD 40,000 (plus SGD 2,000 cash grant for qualifying employers) |
| Pillar Two minimum tax | 15% effective rate from 1 Jan 2025 for large MNEs (EUR 750m+ group revenue) |
| Dividend withholding tax | None — consistent with the single-tier system |
The bottom line
In summary, Singapore's corporate income tax regime is characterised by a competitive flat rate of 17%, significant incentives and exemptions to promote business growth, and alignment with global tax standards for large multinational corporations (MNCs). This framework supports Singapore's attractiveness as a business and investment hub in Asia.
For most owner-managed businesses, the practical priorities are: get the ECI in on time, claim the start-up or partial exemption you qualify for, and don't leave money on the table by missing rebates or sector-specific incentives. To learn more about how we support clients on tax matters, see our Corporate / Individual Tax services.