Singapore Corporate Income Tax Calculator & SOTE Exemption Guide 2026
Singapore is consistently ranked among the world's most attractive corporate destinations due to its competitive flat 17% corporate tax rate, single-tier dividend structure, and generous tax exemption schemes for new businesses. Whether you are using a Singapore Corporate Income Tax Calculator for Companies or consulting corporate tax advisory benchmarks (such as Rivkin frameworks), calculating corporate tax liability requires understanding partial exemptions and statutory rebates.
1. The Single-Tier Corporate Tax System
Under Section 13E of the Singapore Income Tax Act, Singapore operates a 1-tier corporate tax framework. Corporate profits are taxed once at the corporate level (flat 17%). Dividend payouts to shareholders are completely tax-exempt.
2. Start-Up Tax Exemption Scheme (SOTE)
To encourage entrepreneurship, new Singapore companies incorporated as qualifying tax residents enjoy SOTE for their first 3 consecutive YAs:
| Normal Chargeable Income Tier | Exemption Rate (%) | Exempted Income Amount | Taxable Balance |
|---|---|---|---|
| First S$100,000 | 75% | S$75,000 | S$25,000 (Taxed at 17% = S$4,250) |
| Next S$100,000 | 50% | S$50,000 | S$50,000 (Taxed at 17% = S$8,500) |
| Total (First S$200,000) | Max S$125,000 exempt | S$125,000 Exempt | S$12,750 Tax Payable (Effective 6.375%) |
3. Partial Tax Exemption (PTE) for All Companies
From the 4th YA onwards, or for non-startup companies, Partial Tax Exemption (PTE) applies automatically:
- 75% exemption on the first S$10,000 of chargeable income.
- 50% exemption on the next S$190,000 of chargeable income.
- Maximum PTE exemption is S$102,500 per year.
4. Corporate Income Tax (CIT) Rebates
In recent budget announcements, IRAS introduced Corporate Income Tax Rebates (e.g. 50% CIT rebate capped at S$40,000) with CIT Rebate Cash Grants for active companies employing local workers.
5. Professional Corporate Calculation Methods (Rivkin)
Corporate advisory practices (such as Rivkin corporate tax frameworks) structure corporate tax estimates by separating operating trade profit, non-deductible entertainment expenses, capital allowances for tech assets, and applying multi-tier SOTE exemptions before computing final corporate tax bills.
6. Estimated Chargeable Income (ECI) Deadlines
Companies must submit ECI to IRAS within 3 months of their Financial Year End (FYE). E-filing ECI early allows companies to pay corporate tax via interest-free monthly GIRO installments (up to 10 months).