Singapore Corporate Tax Calculator (YA2026)
By Lucas Seah, Founder of Excellence Singapore Group | Last Updated: June 2026
This free Singapore corporate tax calculator estimates your company’s tax for the Year of Assessment 2026. Singapore charges a flat 17% on chargeable income, but most companies pay far less once the start-up or partial tax exemption is applied, and for YA2026 there is a 50% corporate income tax rebate capped at S$40,000. Enter your chargeable income below for an instant estimate, then read on for how it works.
Key Takeaways
- The corporate tax rate is a flat 17% on chargeable income, but exemptions and the rebate make the effective rate much lower for most SMEs.
- A qualifying new company gets the Start-up Tax Exemption: 75% off the first S$100,000 and 50% off the next S$100,000 of chargeable income, for its first 3 Years of Assessment.
- Every other company gets Partial Tax Exemption: 75% off the first S$10,000 and 50% off the next S$190,000.
- For YA2026 there is a 50% CIT Rebate capped at S$40,000, with a minimum S$1,500 cash grant for active companies that employed at least one local employee in 2025.
- This is a planning estimate. Your final tax depends on your tax computation and your IRAS Notice of Assessment.
Singapore Corporate Tax Calculator (YA2026)
Enter your company’s chargeable income and choose your exemption scheme. The calculator applies 17%, the exemption, and the 50% YA2026 rebate.
Start-up exemption is for a qualifying company in its first 3 Years of Assessment (not an investment holding company or property developer). All other companies use partial exemption.
Estimate only, based on YA2026 rules (17%, exemptions, and the 50% rebate capped at S$40,000). The rebate cap is applied automatically. Your IRAS Notice of Assessment is the final figure.
How Corporate Tax Is Calculated in Singapore
Singapore taxes a company's chargeable income, which is your accounting profit adjusted for tax (adding back non-deductible expenses and claiming capital allowances), at a flat 17%. The headline rate has been 17% since 2010 and is unchanged for YA2026, per the IRAS corporate income tax rate, rebates and exemption schemes. The reason most SMEs pay much less than 17% is the exemption that applies before the rate, then the rebate that applies after it.
The Two Exemption Schemes
A company uses one of two exemption schemes, never both. The Start-up Tax Exemption is more generous but is limited to the first three years; after that, the company moves to Partial Tax Exemption.
| Feature | Start-up Exemption (SUTE) | Partial Exemption (PTE) |
|---|---|---|
| Who | Qualifying new company, first 3 YAs | All other companies, every YA |
| First tier | 75% off the first S$100,000 | 75% off the first S$10,000 |
| Second tier | 50% off the next S$100,000 | 50% off the next S$190,000 |
| Maximum exempt | S$125,000 | S$102,500 |
| Key conditions | SG-incorporated, tax resident, no more than 20 shareholders (all individuals, or one individual holding at least 10%); not an investment holding company or property developer | None beyond being a taxable company |
A Worked Example
Take a profitable SME with S$200,000 of chargeable income. As an established company on partial exemption, S$102,500 is exempt, leaving S$97,500 taxable. At 17% that is S$16,575 of gross tax. The 50% YA2026 rebate of S$8,288 brings it down to about S$8,287, an effective rate of roughly 4.1%. A qualifying start-up with the same S$200,000 would exempt S$125,000, be taxed on S$75,000, owe S$12,750 at 17%, and after the 50% rebate pay about S$6,375. You can switch the scheme in the calculator above to see the difference for your own figure.
The YA2026 Corporate Income Tax Rebate
For YA2026 the Government enhanced the CIT Rebate to 50% of the corporate tax payable, capped at S$40,000. It was originally announced at 40% in Budget 2026 and then raised to 50%. There is also a minimum benefit: an active company that employed at least one local (Singapore Citizen or PR) employee in 2025 receives at least S$1,500 as a CIT Rebate Cash Grant. The rebate is computed automatically by IRAS, so you do not apply for it. The calculator above already nets it off, with the S$40,000 cap applied. For the filing dates and how to claim, see our guide on the Singapore corporate tax deadline and rebate.
Do Not Forget ECI
Most companies must file an Estimated Chargeable Income (ECI) within 3 months of their financial year-end, even before the final tax return. A company can skip ECI for a year only if its annual revenue is S$5 million or less and its ECI is nil, per the IRAS ECI filing rules. The final return (Form C-S, Form C-S (Lite) or Form C) is then due by 30 November. A dormant company still has obligations, which we cover in our guide to dormant company tax filing.
How Accurate Is This Calculator?
The calculator applies the official YA2026 rate, both exemption schemes, and the 50% rebate, so for a company with a known chargeable income it is close to the IRAS figure. It does not perform the tax computation itself, meaning it assumes you already have your chargeable income after adding back non-deductible expenses and claiming capital allowances. It also does not model unutilised losses, group relief, or foreign tax credits. For those, or to get your chargeable income right in the first place, our team can prepare the full computation. New companies can also read our guide on how to register a company in Singapore and foreign owners our guide on tax filing for foreign-owned companies.
Frequently Asked Questions
What is the corporate tax rate in Singapore for YA2026?
A flat 17% on chargeable income. The effective rate is usually much lower once the start-up or partial tax exemption and the 50% YA2026 rebate are applied.
How much is the corporate tax rebate for YA2026?
It is 50% of the corporate tax payable, capped at S$40,000. Active companies that employed at least one local employee in 2025 receive a minimum S$1,500 cash grant. IRAS computes it automatically.
What is the difference between start-up and partial tax exemption?
Start-up exemption gives 75% off the first S$100,000 and 50% off the next S$100,000 for a qualifying company's first 3 Years of Assessment. Partial exemption gives 75% off the first S$10,000 and 50% off the next S$190,000, and applies to every other company.
How do I calculate my company's chargeable income?
Start with your accounting profit, add back non-deductible expenses, deduct capital allowances and any approved reliefs, and the result is your chargeable income. Tax is then charged on that figure, so getting it right is the most important step.
Does a new company really pay no tax on its first S$100,000?
A qualifying start-up pays tax on only 25% of its first S$100,000 (75% is exempt) in each of its first 3 Years of Assessment, then the rebate reduces it further. It is a large saving, but it is not a full exemption, and investment holding companies and property developers do not qualify.
Is this the same as the IRAS Basic Corporate Income Tax Calculator?
IRAS provides an Excel Basic Corporate Income Tax Calculator that also builds your tax computation. This tool is a faster web estimate once you know your chargeable income, using the same YA2026 rate, exemptions and rebate.
Related Tools and Guides
Individuals can use our Singapore income tax calculator. For the YA2026 changes in context, see our YA2026 tax guide, and employers our Form IR8A guide. If you outsource your finance function, our outsourced accounting and bookkeeping versus accounting guides explain how the numbers reach your tax computation, and growing companies can compare SME business loans.
Let Us Prepare Your Tax Computation
The exemptions and the rebate are the easy part. The accuracy of your corporate tax depends on a correct tax computation, claiming every allowance, and filing ECI and the return on time. Excellence Singapore Group prepares corporate tax computations and handles filing for companies of every size, with Chartered Accountants and Accredited Tax Practitioners who have supported more than 4,000 businesses since 2013. To get your company tax done properly, talk to us or see our taxation services.
