Statutory Overview & Legal Framework
Singapore corporate income tax is administered by IRAS. The headline corporate income tax rate is 17% of chargeable income. Qualifying new start-up companies can use the tax exemption scheme for new start-up companies for their first 3 consecutive Years of Assessment (YAs): 75% of the first S$100,000 of normal chargeable income is exempt and 50% of the next S$100,000 is exempt, giving a maximum exemption of S$125,000 per YA. Companies that do not qualify for that start-up scheme can generally use the Partial Tax Exemption (PTE) scheme, which exempts 75% of the first S$10,000 and 50% of the next S$190,000 of normal chargeable income, up to S$102,500 per YA. YA 2026 also has an enhanced 50% Corporate Income Tax (CIT) Rebate and a separate CIT Rebate Cash Grant for qualifying businesses, subject to the specific eligibility and cap rules. Companies generally file ECI within 3 months after FYE unless an ECI waiver or other exemption applies, and the annual Corporate Income Tax Return is due by 30 November.
Singapore Corporate Tax Basics
rate: The standard corporate income tax rate is 17% of chargeable income.
basis: Singapore corporate income tax is assessed on a preceding-year basis. The company's income for its basis period is assessed in the corresponding Year of Assessment.
chargeable Income: Chargeable income is taxable income after allowable deductions and relevant adjustments, before applicable exemption amounts.
residency: Corporate tax treatment and access to particular incentives can depend on whether the company is a Singapore tax resident and on the specific statutory conditions.
not Same As Revenue: The 17% rate is not applied directly to gross revenue. Tax is computed from chargeable income after the relevant tax adjustments.
Start-Up Tax Exemption for New Companies
official Name: Tax Exemption Scheme for New Start-Up Companies
availability: The scheme applies to qualifying companies for their first 3 consecutive YAs.
First S$100,000 of normal chargeable income
75%
Next S$100,000 of normal chargeable income
50%
maximum Exemption: S$125,000 per YA
qualifying Conditions:
The company is incorporated in Singapore.
The company is a Singapore tax resident for that YA.
The company's total share capital is beneficially held directly by no more than 20 shareholders throughout the basis period, with either all shareholders being individuals or at least one individual shareholder holding at least 10% of the issued ordinary shares.
The company is not a company whose principal activity is investment holding.
The company does not undertake property development for sale, investment or both.
important: The exemption applies to normal chargeable income taxed at the prevailing 17% rate. It does not mean the first S$200,000 of income is completely tax-free.
Partial Tax Exemption (PTE)
availability: Companies that do not use the start-up exemption can generally benefit from the Partial Tax Exemption, subject to the applicable rules.
First S$10,000 of normal chargeable income
75%
Next S$190,000 of normal chargeable income
50%
maximum Exemption: S$102,500 per YA
important: The PTE exemption is an exemption amount, not a tax rebate of S$102,500. The remaining chargeable income is taxed at the prevailing corporate income tax rate.
Simple Tax Examples
Qualifying start-up with S$200,000 normal chargeable income
S$75,000 exempt + S$50,000 exempt = S$125,000 exempt; S$75,000 remains taxable at 17%.
Company using PTE with S$200,000 normal chargeable income
S$7,500 exempt + S$95,000 exempt = S$102,500 exempt; S$97,500 remains taxable at 17%.
These examples illustrate only the exemption mechanics. Actual tax payable can be affected by deductions, capital allowances, losses, tax credits, incentives and YA-specific rebates.
YA 2026 Corporate Income Tax Rebate
rebate: For YA 2026, the enhanced CIT Rebate is 50% of corporate tax payable, subject to the statutory cap.
cash Grant: An eligible business can receive a separate CIT Rebate Cash Grant of S$2,000 under the YA 2026 rules.
combined Cap: The total maximum benefit from the YA 2026 CIT Rebate and CIT Rebate Cash Grant is S$40,000.
important: Where a company is eligible for the S$2,000 cash grant and its computed 50% CIT Rebate is more than S$2,000, the CIT Rebate is reduced by the S$2,000 cash grant for purposes of the combined S$40,000 maximum. Where the computed CIT Rebate is S$2,000 or less, no separate CIT Rebate is given to a company eligible for the cash grant.
cash Grant Condition: For the YA 2026 CIT Rebate Cash Grant mechanism, qualifying companies must satisfy the applicable business and local-employee conditions. The local-employee condition relates to employing at least one qualifying local employee and timely CPF contribution requirements.
do Not Confuse: The CIT Rebate and the CIT Rebate Cash Grant are separate mechanisms. The cash grant is not simply an extra 50% reduction in tax.
Estimated Chargeable Income (ECI)
deadline: ECI is generally due within 3 months after the company's financial year-end.
waiver: A company does not need to file ECI for a YA when it qualifies for the ECI filing waiver: annual revenue is S$5 million or below for the financial year and ECI is nil for that YA before deducting the start-up or partial tax exemption.
ECI provides IRAS with an early estimate of the company's chargeable income and tax payable.
point: An ECI waiver does not remove the separate obligation to file the annual Corporate Income Tax Return unless another filing waiver applies.
Corporate Income Tax Return
deadline: Form C-S, Form C-S (Lite) or Form C is generally due electronically by 30 November every year.
form C S: A company can use Form C-S when it meets IRAS's simplified filing criteria, including incorporation in Singapore, annual revenue of S$5 million or below and income taxable at the prevailing 17% rate, subject to the other conditions.
form C S Lite: Form C-S (Lite) is available to companies that qualify for Form C-S and have annual revenue of S$200,000 or below.
form C: Companies that do not qualify for Form C-S, Form C-S (Lite) or the applicable dormant-company form file Form C.
dormant: A qualifying dormant company that did not carry on business and had no income can use the Form for Dormant Company where the relevant IRAS conditions are met.
Paying Corporate Income Tax
After IRAS issues a Notice of Assessment, the company generally has one month from the date of the Notice of Assessment to pay the tax.
methods:
GIRO
PayNow Corporate
Internet banking or other IRAS-approved payment methods
important: The filing deadline and payment deadline are different. Filing the tax return by 30 November does not mean tax is automatically due on that same date.
Dividends and Capital Gains
dividends: Under Singapore's one-tier corporate tax system, dividends paid by a Singapore-resident company are generally not taxable in the shareholder's hands because the company's tax is final, subject to the applicable statutory exceptions.
capital Gains: Singapore does not impose a separate capital gains tax. However, gains that are revenue in nature, including gains from trading activities, can be taxable as ordinary income.
company Level: Whether a particular disposal gain is capital or revenue in nature depends on the facts and circumstances.
Annual Corporate Tax Workflow
1
Close the Accounts
Finalise the company's accounts for the financial year and identify the relevant basis period.
2
Assess ECI
Calculate Estimated Chargeable Income and file ECI within 3 months after FYE unless an ECI waiver applies.
3
Determine Tax Relief
Check eligibility for the start-up tax exemption, PTE, capital allowances, losses, tax incentives and any YA-specific rebate.
4
Prepare the Corporate Tax Return
Select the appropriate Form C-S, Form C-S (Lite), Form C or applicable dormant-company filing.
5
File by 30 November
Submit the annual Corporate Income Tax Return electronically through IRAS.
6
Review the Notice of Assessment
Check IRAS's assessment, applicable rebates and the resulting tax payable.
7
Pay by the Due Date
Generally pay within one month from the Notice of Assessment date.
Frequently Asked Questions (FAQ)
The standard Singapore corporate income tax rate is 17% of chargeable income. The actual tax payable can be lower after applicable tax exemptions, deductions, incentives, rebates and other statutory adjustments.
Qualifying new companies can use the Tax Exemption Scheme for New Start-Up Companies for their first 3 consecutive YAs. The scheme exempts 75% of the first S$100,000 and 50% of the next S$100,000 of normal chargeable income, giving a maximum exemption of S$125,000 per YA.
The PTE generally exempts 75% of the first S$10,000 and 50% of the next S$190,000 of normal chargeable income. The maximum exempt amount is S$102,500 per YA.
For YA 2026, the CIT Rebate is 50% of corporate tax payable, subject to the applicable cap. Eligible businesses can also receive a separate S$2,000 CIT Rebate Cash Grant. The combined maximum benefit from the rebate and cash grant is S$40,000, with specific adjustment rules where the company qualifies for the cash grant.
ECI is generally due within 3 months after the financial year-end unless the company qualifies for an ECI waiver. The annual Form C-S, Form C-S (Lite) or Form C is generally due by 30 November each year.
Dividends paid by a Singapore-resident company are generally not taxable in the shareholder's hands under the one-tier corporate tax system. Singapore does not impose a separate capital gains tax, but gains that are revenue in nature can be taxable as ordinary income.
Legal Disclaimer: This page is general informational content, not tax, accounting or legal advice. Corporate tax treatment depends on the company's facts, tax residence, income sources, deductions, shareholding, business activities and applicable incentives. Check the current IRAS requirements and the company's specific tax position before filing.
Verification Standard: Official IRAS sources checked for August 2026. No government endorsement, approval, accreditation or official verification of this website is claimed.
Primary Statutory References & Government Portals
- • IRAS — Corporate Income Tax Rate, Rebates & Tax Exemption Schemes
- • IRAS — Corporate Income Tax Rates
- • IRAS — Basic Guide to Corporate Income Tax for Companies
- • IRAS — Estimated Chargeable Income Filing
- • IRAS — Corporate Income Tax Filing Season 2026
- • IRAS — Guidance on Filing Form C-S / Form C-S (Lite) / Form C
- • IRAS — SME Cash Grant 2026
- • IRAS — Dividends
- • IRAS — Certainty of Non-taxation of Companies' Gains on Disposal of Equity Investments
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ACRA Compliance at a Glance
Corporate income tax17% of chargeable income
Start-up exemptionMaximum S$125,000 exemption per YA
Partial tax exemptionMaximum S$102,500 exemption per YA
YA 2026 CIT Rebate50%, with total rebate/grant benefit capped at S$40,000
ECI deadlineWithin 3 months after FYE, unless waived
Annual CIT return30 November
Documents Checklist
- Financial statements for the relevant financial period
- Tax computation
- Supporting schedules and records for income and deductions
- Capital allowance schedules where applicable
- Records supporting losses, donations, tax credits and incentives where claimed
- ECI filing information
- Corporate Income Tax Return and supporting information
- IRAS Notice of Assessment
Key Pitfalls to Avoid
✕ Applying 17% directly to gross revenue.
✓ Corporate income tax is charged on chargeable income after the relevant tax adjustments.
✕ Calling the S$125,000 SUTE/SOTE figure a tax refund.
✓ S$125,000 is the maximum amount of normal chargeable income exempted under the start-up scheme per YA, not a S$125,000 cash payment or tax rebate.
✕ Assuming every new company qualifies for the start-up exemption.
✓ The company must satisfy the Singapore incorporation, tax-residency, shareholding and excluded-activity conditions.
✕ Confusing PTE's S$102,500 with the amount of tax saved.
✓ S$102,500 is the maximum exempt amount of normal chargeable income; the actual tax saving depends on the applicable 17% rate and other tax calculations.
✕ Treating the YA 2026 S$40,000 figure as a standalone CIT rebate for every company.
✓ The S$40,000 is the combined maximum benefit of the CIT Rebate and CIT Rebate Cash Grant, subject to the applicable eligibility and adjustment rules.
✕ Assuming ECI and the annual corporate tax return have the same deadline.
✓ ECI is generally due within 3 months after FYE, while the annual Corporate Income Tax Return is generally due by 30 November.
✕ Assuming an ECI waiver removes the annual tax-return filing obligation.
✓ ECI and the annual Corporate Income Tax Return are separate obligations.