Singapore Corporate Tax 17% & Start-Up Exemption (SOTE) Guide 2026

Complete 2026 guide to Singapore's 17% corporate tax, Start-Up Tax Exemption (SOTE), Partial Tax Exemption (PTE), and 40% CIT Rebate (capped S$30,000) from Budget 2026. Covers ECI filing, Form C-S deadline, single-tier dividends, and ACRA requirements.

Statutory Overview & Legal Tax Framework

Corporate income tax in Singapore is administered by IRAS under the Income Tax Act 1947 (Cap. 134), with a flat headline Corporate Income Tax (CIT) rate of 17% applied to all chargeable income of companies tax-resident in Singapore. Singapore's territorial tax system means only income derived from or received in Singapore is taxable, making it highly attractive for holding companies and regional headquarters. For YA 2026, the Singapore government announced in Budget 2026 a Corporate Income Tax (CIT) Rebate of 40% of corporate tax payable, capped at S$30,000 per company - applicable to all tax-paying companies regardless of tax residency. In addition to the CIT rebate, two permanent statutory tax exemption schemes further reduce effective corporate tax rates: the Start-Up Tax Exemption (SOTE) scheme grants newly incorporated qualifying companies a 75% tax exemption on the first S$100,000 of chargeable income and a 50% exemption on the next S$100,000 for their first 3 consecutive Years of Assessment; while the Partial Tax Exemption (PTE) scheme grants all other companies a 75% exemption on the first S$10,000 and a 50% exemption on the next S$190,000 of chargeable income. Companies must file Estimated Chargeable Income (ECI) within 3 months of their financial year-end and submit the annual corporate tax return (Form C-S, Form C-S Lite, or Form C) by 30 November 2026. Under Singapore's Single-Tier Corporate Tax System, dividends distributed by companies to shareholders are 100% tax-free, as corporate tax at the company level is the final, complete tax on profits.

Key Tax Criteria & Statutory Rules

YA 2026 CIT Rebate - 40% of Tax Payable, Capped at S$30,00040% CIT Rebate

For YA 2026, all tax-paying companies (Singapore tax resident or non-resident) receive an automatic Corporate Income Tax Rebate of 40% of the corporate tax payable for that Year of Assessment, capped at S$30,000 per company. This rebate is applied after computing tax at 17% and after SOTE/PTE exemptions, further reducing effective corporate tax liability.

Start-Up Tax Exemption (SOTE) for First 3 Years of AssessmentSOTE Scheme

Newly incorporated qualifying companies enjoy: 75% tax exemption on the first S$100,000 of normal chargeable income, and 50% exemption on the next S$100,000, for each of their first 3 consecutive Years of Assessment. Effective corporate tax rate under SOTE on S$100k income = approximately 4.25% (after 75% exemption, then 17% on remaining 25%).

Partial Tax Exemption (PTE) for All Other CompaniesPTE Scheme

All companies that do not qualify for SOTE (or after SOTE expires) receive the Partial Tax Exemption: 75% exemption on the first S$10,000 of normal chargeable income, and 50% exemption on the next S$190,000. This reduces the effective tax rate on the first S$200,000 from 17% to approximately 8.5%.

Single-Tier Corporate Tax System - 100% Tax-Free DividendsSingle-Tier Dividends

Tax paid by a Singapore company on its chargeable income is a final, one-time tax. Dividends paid by Singapore-resident companies under the one-tier corporate tax system are generally not taxable to shareholders, subject to specific exceptions and fact patterns. Shareholders need not declare Singapore single-tier dividends in their personal or corporate tax returns.

Qualification Rules & Tax Compliance

SOTE applies only to companies that are: (1) incorporated in Singapore; (2) a Singapore tax resident for the YA; (3) have no more than 20 shareholders throughout the basis period; and (4) at least one individual shareholder holds at least 10% of the total ordinary shares. Investment holding companies and companies principally engaged in property development for sale are excluded from SOTE.

All companies incorporated in Singapore - including dormant, loss-making, and newly incorporated companies - are required to file both the Estimated Chargeable Income (ECI) within 3 months of their financial year-end and the annual Form C-S / C-S Lite / C return by 30 November of the YA, unless IRAS grants a specific filing waiver.

Companies with annual revenue of S$5,000,000 or less, deriving only income taxable at the standard 17% CIT rate (no special tax rates), and with no capital allowance claims for items costing more than S$1,000 each, may file the simplified Form C-S instead of the full Form C with financial statements.

The 40% CIT Rebate for YA 2026 (announced in Budget 2026) is automatically computed by IRAS and applied to the corporate tax payable after SOTE/PTE exemptions. No separate application is required.

IRAS Filing & Verification Checklist

Income Tax Act 1947 (Cap. 134) corporate tax provisions and IRAS e-Tax Guide on SOTE and PTE schemes (iras.gov.sg/taxes/corporate-income-tax)

Audited or unaudited financial statements, tax computation worksheet, and capital allowance schedule for the company's financial year ended in the preceding calendar year

Corppass access for IRAS myTax Portal for ECI e-filing and annual Form C-S / C-S Lite / C submission by the 30 November 2026 deadline

ACRA BizFile+ company profile confirming shareholder details (for SOTE eligibility verification), paid-up capital, and date of incorporation

Step-by-Step IRAS Filing & Payment Workflow

Prepare Annual Financial Statements & Tax Computation

Prepare your company's financial statements for the financial year ended in the preceding calendar year. Prepare the tax computation adjusting book profit for tax-deductible and non-deductible items, capital allowances (under Section 19/19A), and any unabsorbed losses or capital allowances carried forward.

File Estimated Chargeable Income (ECI) Within 3 Months of FYE

Submit ECI (an estimate of the company's chargeable income for the YA) electronically via myTax Portal using Corppass within 3 months from the end of the company's financial year. Companies whose ECI is estimated to be nil (zero chargeable income) may qualify for the ECI filing waiver - check eligibility on iras.gov.sg.

Apply SOTE or PTE Tax Exemptions on Chargeable Income

In the tax computation, apply the Start-Up Tax Exemption (75%/50% on S$100k/S$100k) if SOTE conditions are met, or the Partial Tax Exemption (75%/50% on S$10k/S$190k) for all other companies. Then compute corporate tax at 17% on the remaining taxable income after exemptions.

Apply 40% YA 2026 CIT Rebate (Budget 2026 Announcement)

After computing corporate tax (post SOTE/PTE exemptions), apply the 40% CIT Rebate for YA 2026 (capped at S$30,000). This rebate is automatically calculated by IRAS. No separate application is needed - it will be reflected in your Notice of Assessment.

File Form C-S / C-S Lite / C Return by 30 November 2026

Submit the annual corporate income tax return electronically on myTax Portal by 30 November 2026. Companies with revenue x<=S$5M file Form C-S; companies with revenue x<=S$1M and meeting simplicity criteria file Form C-S Lite; all other companies file the full Form C. Pay the assessed corporate tax via 10-month interest-free GIRO installments.

Frequently Asked Questions (FAQ)

Singapore maintains a single flat headline corporate income tax rate of 17% on all chargeable income. However, effective tax rates are significantly lower due to the YA 2026 CIT Rebate (40% rebate capped at S$30,000), Start-Up Tax Exemption (SOTE), and Partial Tax Exemption (PTE) schemes - reducing the effective corporate tax rate to as low as approximately 4.25% on the first S$100,000 for qualifying start-ups after SOTE and the CIT rebate.

As announced in Singapore Budget 2026, all tax-paying companies receive a Corporate Income Tax (CIT) Rebate of 40% of the corporate tax payable for YA 2026, capped at S$30,000 per company. The rebate is applied automatically by IRAS - no application is required. It applies after SOTE/PTE exemptions are calculated and reduces the final tax bill by up to S$30,000.

SOTE is a tax incentive for newly incorporated qualifying Singapore companies. For each of their first 3 consecutive Years of Assessment (YA), qualifying companies receive: a 75% tax exemption on the first S$100,000 of normal chargeable income (effective tax = 4.25% xx- S$100k = S$4,250), plus a 50% tax exemption on the next S$100,000 of chargeable income (effective tax = 8.5% xx- S$100k = S$8,500). After the SOTE period, companies move to the Partial Tax Exemption (PTE) scheme automatically.

To qualify for SOTE, a company must: (1) be incorporated in Singapore; (2) be a Singapore tax resident for the YA; (3) have 20 or fewer shareholders for the entire basis period; and (4) have at least one individual shareholder directly holding at least 10% of the total ordinary share capital. Investment holding companies and companies principally engaged in property development for sale are specifically excluded from SOTE.

ECI is an estimate of a company's total chargeable income for a given Year of Assessment, declared before the full tax return is submitted. Companies must file ECI electronically on myTax Portal within 3 months from the end of their financial year. For example, a company with a 31 December financial year-end must file ECI by 31 March of the following year. Companies qualifying for the ECI filing waiver (typically with 0 chargeable income) need not file ECI.

No. Under Singapore's Single-Tier Corporate Tax System, dividends distributed by Singapore-incorporated companies to their shareholders are completely exempt from further taxation at the shareholder level. Whether the shareholder is a Singapore citizen, PR, foreigner, or corporate entity, Singapore single-tier dividends received are 100% tax-free and need not be declared in personal or corporate income tax returns.