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

Complete guide to Singapore 17% Corporate Tax and Start-Up Tax Exemption (SOTE). Explains partial tax exemptions, CIT rebates, & ECI filing deadlines.

Statutory Overview & Legal Tax Framework

Corporate income tax in Singapore is administered by IRAS under the Income Tax Act (Cap. 134). Singapore maintains a single flat headline Corporate Tax rate of 17%, which is further reduced through generous statutory tax exemptions. Newly incorporated qualifying companies enjoy the Start-Up Tax Exemption (SOTE) scheme for their first 3 consecutive Years of Assessment (YA), receiving a 75% tax exemption on the first S$100,000 of normal chargeable income and a 50% exemption on the next S$100,000. All other companies qualify for Partial Tax Exemption (PTE) (75% exemption on first S$10,000 and 50% on next S$190,000), reducing effective corporate tax rates to as low as 4.25% to 8.5%.

Key Tax Criteria & Statutory Rules

Start-Up Tax Exemption (SOTE) Qualifying RulesSOTE Rules

Must be Singapore incorporated, tax resident, have max 20 shareholders, and at least 1 individual owning ≥10% shares.

Partial Tax Exemption (PTE) Scheme for All CompaniesPTE Exemption

75% exemption on first S$10,000 and 50% exemption on next S$190,000 of chargeable income for existing companies.

Single-Tier Tax System (100% Tax-Free Dividend Distribution)Single Tier

Corporate tax paid at company level is final; dividends distributed to shareholders carry zero additional tax.

Corporate Income Tax (CIT) Rebate & Working Capital GrantsCIT Rebate

Annual CIT rebates (e.g., 50% CIT rebate up to S$40,000) granted by government during budget announcements.

Qualification Rules & Tax Compliance

Applies to all companies incorporated in Singapore or foreign corporate branches registered with ACRA.

SOTE excludes investment holding companies and companies developing property for sale.

Estimated Chargeable Income (ECI) must be filed within 3 months of the financial year-end.

Form C-S / Form C corporate tax return must be filed electronically on myTax Portal by November 30.

IRAS Filing & Verification Checklist

Income Tax Act (Cap. 134) Corporate Tax Provisions

Audited / Unaudited Financial Statements & Tax Computations

Singpass Access for IRAS myTax Portal Corporate Filing

ACRA BizFile Business Profile showing Shareholding Structure

Step-by-Step IRAS Filing & Payment Workflow

Prepare Annual Financial Statements & Tax Computation

Calculate net profit before tax and adjust for tax-deductible expenses and capital allowances.

File Estimated Chargeable Income (ECI) Within 3 Months

Submit ECI online via myTax Portal within 3 months of financial year-end date.

Apply SOTE or PTE Tax Exemptions on Chargeable Income

Apply 75%/50% statutory tax exemptions to compute net tax payable.

File Form C-S / Form C Corporate Return by November 30

Submit final Form C-S (for revenue ≤ S$5 million) on myTax Portal.

Pay Corporate Tax Bill via 10-Month GIRO Instalments

Pay corporate tax notice of assessment via 10-month interest-free GIRO installments.

Frequently Asked Questions (FAQ)

Singapore has a single flat corporate income tax rate of 17%. However, due to tax exemptions, the effective tax rate for small businesses and start-ups is significantly lower.

SOTE is a tax incentive for newly incorporated Singapore companies for their first 3 consecutive Years of Assessment, offering a 75% tax exemption on the first S$100,000 of chargeable income and a 50% exemption on the next S$100,000.

To qualify, the company must be incorporated in Singapore, be a tax resident, have 20 or fewer shareholders, and have at least one individual shareholder holding at least 10% of ordinary shares. Investment holding and property development firms are excluded.

ECI is an estimate of a company's taxable income for a Year of Assessment. Companies must file ECI with IRAS within 3 months from the end of their financial year.

Companies with annual revenue of S$5,000,000 or less, deriving only standard 17% taxable income, can file the simplified Form C-S return without submitting financial statements unless requested.

No. Under Singapore's Single-Tier Corporate Tax System, all corporate dividends paid to shareholders are 100% tax-exempt.