Singapore's headline corporate rate is 17% — among the lowest in the developed world — and small companies rarely pay even that, thanks to exemption schemes and the current CIT rebate. Here's the whole system in plain English.
First, decode "YA"
Tax runs one year behind: the Year of Assessment (YA) taxes the financial year that ended in the previous calendar year. FY ended 31 December 2025 → assessed in YA 2026 → Form C-S due 30 November 2026.
The exemptions that do the heavy lifting
- Partial exemption (most companies): 75% of the first S$10,000 of chargeable income is exempt, plus 50% of the next S$190,000 — up to S$102,500 exempt.
- Start-up exemption (first 3 YAs, qualifying new companies): 75% of the first S$100,000 plus 50% of the next S$100,000 — up to S$125,000 exempt.
YA 2026: the 50% CIT rebate
On top of the exemptions, YA 2026 carries a 50% rebate on tax payable, capped at S$40,000 per company. Active companies that employed at least one local (Citizen/PR) employee on CPF in 2025 get a S$2,000 cash grant automatically, which uses up part of the same cap.
Worked example: S$120,000 profit, YA 2026
- Chargeable income before exemption: S$120,000
- Partial exemption: 75% × 10,000 + 50% × 110,000 = S$62,500
- Chargeable income: S$57,500 → tax at 17% = S$9,775
- CIT rebate 50% = S$4,888 → net payable ≈ S$4,887
- Effective rate on the S$120,000 profit: about 4.1%
Your own numbers will differ with add-backs (depreciation, private expenses, fines) and capital allowances — run them in our free corporate tax calculator.
Rates and schemes per IRAS as at June 2026; the CIT rebate is YA-specific and set at each Budget. General information, not tax advice.