Singapore Corporate Tax 2026 Guide for Directors: 17% Rate, SUTE, 50% Rebate, ECI and Penalties

Short answer: Singapore taxes company chargeable income at a flat 17%. For YA 2026, exemptions cut tax on the first S$200,000, and a 50% Corporate Income Tax Rebate (capped at S$40,000, including any S$2,000 cash grant) reduces the bill further. ECI is due within 3 months of financial year end; the return is due on 30 November 2026.

Singapore corporate tax 2026 comes down to four things: the headline rate, the exemption your company qualifies for, the one-off rebate announced in Budget 2026 and enhanced in April 2026, and two filing deadlines. This guide sets out each as the Inland Revenue Authority of Singapore (IRAS) publishes it, with worked figures and penalties. For the step-by-step filing season checklist, see our Singapore corporate tax filing 2026 guide; this article is the overview that sits above it.

Raffles Corporate Services works with a panel of experienced Singapore law firms who offer cost-effective and efficient legal service and advice. This article is general information only and is not legal advice.

What is the Singapore corporate tax rate for 2026?

The corporate income tax rate is a flat 17% of chargeable income, and it applies to both local and foreign companies. Chargeable income is accounting profit adjusted for tax: non-deductible expenses are added back, capital allowances replace accounting depreciation, and exempt income is taken out.

Tax is assessed by Year of Assessment (YA): YA 2026 covers income of the financial year that ended in 2025.

Only multinational groups with consolidated revenue of at least EUR 750 million in at least two of the four preceding financial years face the 15% global minimum tax, applied in Singapore from financial years starting on or after 1 January 2025.

How do the partial tax exemption and start-up tax exemption work?

Every company gets one of two exemptions on its first S$200,000 of normal chargeable income: the start-up tax exemption (SUTE) in its first 3 consecutive YAs if it qualifies, and the partial tax exemption (PTE) in every other YA. Both are granted under Section 43 of the Income Tax Act 1947 and are claimed in the ECI and the annual return.

SUTE is not automatic. IRAS excludes companies whose principal activity is investment holding and companies that undertake property development for sale, investment or both. A qualifying company must also:

1. be incorporated in Singapore;
2. be tax resident in Singapore for that YA; and
3. have its total share capital beneficially held directly by no more than 20 shareholders throughout the basis period, where all shareholders are individuals or at least one individual holds at least 10% of the issued ordinary shares.

The three YAs run consecutively whether or not the company makes a profit, so a loss year still uses one up. Our start-up tax exemption guide covers how to identify the first three YAs.

What is the YA 2026 Corporate Income Tax Rebate and Cash Grant?

For YA 2026 every taxpaying company receives a Corporate Income Tax (CIT) Rebate of 50% of tax payable, and active companies with at least one local employee receive a minimum benefit of S$2,000 as a CIT Rebate Cash Grant. The two together are capped at S$40,000 per company.

Budget 2026 first announced a 40% rebate, a S$1,500 cash grant and a S$30,000 cap. In April 2026 the Government raised these to 50%, S$2,000 and S$40,000 in response to the energy situation in the Middle East. The Ministry of Finance confirmed in its second reading speech on the Finance (Income Taxes) Bill on 6 October 2026 that Clause 31 gives the enhanced rebate and cash grant legal effect.

The conditions, as set out on the IRAS rates, rebates and exemptions page, are:

• Cash grant: the company must be active at the point of payment and must have made CPF contributions in calendar year 2025 to at least one Singapore citizen or permanent resident employee, not counting shareholders who are also directors. IRAS paid it automatically by the second quarter of 2026, and it is not taxable. A qualifying company that was not paid can appeal through myTax Mail by 30 November 2026.
• Rebate: it is computed on tax payable after set-offs such as foreign tax credit. It applies to income taxed at concessionary rates but not to income subject to final withholding tax. Do not deduct it in the ECI or the return; IRAS computes it in the assessment.
• Interaction: where a company received the cash grant, its rebate is reduced by S$2,000. If 50% of its tax is S$2,000 or less, no further rebate is given.

More examples are in our YA 2026 CIT Rebate and Cash Grant explainer. Separately, the SME Cash Grant 2026 of S$500 per local qualifying employee, capped at S$2,500, is being paid by GIRO or PayNow Corporate from 2 November 2026 with no application needed; see our SME Cash Grant 2026 guide.

How much Singapore corporate tax 2026 will my company pay?

Apply the exemption first, tax the balance at 17%, then take off the 50% rebate within the cap. The table assumes no tax set-offs and that each company meets the local employee condition for the S$2,000 cash grant.

For the established company, total relief is S$33,787.50, well under the S$40,000 cap. The cap only bites once tax payable before rebate exceeds S$80,000. To test your own figures, use the calculators on our free tools page.

When must a company file ECI, and who is exempt?

A company must file Estimated Chargeable Income within 3 months from the end of its financial year unless it qualifies for the ECI filing waiver. ECI is an estimate of taxable profit for the YA, and IRAS uses it to issue an early assessment.

The waiver applies only when both conditions are met:

1. annual revenue for the financial year is S$5 million or below; and
2. ECI is nil for the YA, measured before deducting the PTE or SUTE exempt amount.

A company with revenue above S$5 million must file even when its ECI is nil. Filing early pays: a company on GIRO that files within 1 month of year end gets 10 monthly instalments, within 2 months 8, within 3 months 6, and none after that. If a required ECI is not filed, IRAS may issue a Notice of Assessment based on its own estimate of income.

Which form should you file: Form C-S, Form C-S (Lite) or Form C?

Most small companies file Form C-S or Form C-S (Lite); everyone else files Form C. The choice turns on revenue, the type of income and the claims being made.

All forms are filed at mytax.iras.gov.sg through Corppass. Directors remain responsible for timely and accurate filing even when a tax agent is engaged.

What is the corporate tax filing deadline for YA 2026?

All companies must file their YA 2026 return by 30 November 2026, including companies that made a loss or did not carry on business in financial year 2025, unless IRAS has granted a waiver. The IRAS filing season 2026 page sets out which newly incorporated and dormant companies must file.

A request for more time on the current YA can only be made through the Request Extension of Time to File digital service after 30 November.

What are the penalties for late corporate tax filing or payment?

Late filing is an offence, and IRAS escalates in stages: an estimated assessment, an offer of composition of up to S$5,000 per offence, a notice to the director, and then a court summons. Late payment attracts a separate percentage penalty.

1. Estimated Notice of Assessment: the estimated tax must be paid within 1 month, even if the company objects. To revise it, the company must object within 2 months and submit the return, financial statements and tax computation.
2. Composition: IRAS may offer to compound the offence for up to S$5,000, depending on past compliance. Paying it does not remove the obligation to file.
3. Section 65B(3) notice: a director can be required to supply the return information. A director convicted for failing to comply faces a fine of up to S$10,000, imprisonment of up to 12 months, or both, for each offence.
4. Court: on conviction the company may be fined up to S$5,000 per offence. Where returns are unfiled for 2 or more years, the court may also order a penalty of twice the tax assessed.
5. Late payment: a 5% penalty on unpaid tax after the due date, then 1% for each completed month the tax stays unpaid more than 60 days after that, up to 12%.

Our article on the IRAS court summons for unfiled corporate tax returns explains what directors face at that stage.

Frequently asked questions

Is the Singapore corporate tax rate still 17% in 2026?

Yes. IRAS states a flat rate of 17% of chargeable income for local and foreign companies. The effective rate is lower for most small companies because of the partial or start-up tax exemption and the YA 2026 rebate.

Do I need to claim the YA 2026 CIT Rebate?

No. IRAS computes the rebate automatically from the ECI or return filed. Do not deduct it when declaring chargeable income. The cash grant was paid automatically to eligible companies.

My company made a loss. Do I still file by 30 November 2026?

Yes, if the company carried on business or received income during financial year 2025. A company that did not carry on business and had no income files the Form for Dormant Company unless IRAS has granted a filing waiver.

How much does Raffles Corporate Services charge for corporate tax filing?

Our published packages list Form C-S or Form C-S (Lite) filing with a simplified tax computation from S$350, and Form C filing with a comprehensive tax computation from S$700. ECI filing for the same period is included where needed.

For the ACRA side of the annual cycle, see Singapore Secretary Services.

Last reviewed: 28 October 2026. The Editorial Team, Raffles Corporate Services.