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Corporate income tax

Headline corporate tax rate 17%. ECI, Form C-S, Form C-S (Lite), Form C, and dormant-company filing where it applies, aligned to the financial year.

This service

Corporate tax filingS$400/year

Optional services

Add only what you need. The total updates immediately, then you pay.

ACRA

Corporate Service Provider (CSP) FA20240235

Professional accounting

Professional accounting team

Ministry of Manpower

Employment Agency Select Licence 26S3340

Tax dates are statutory

Headline corporate income tax rate 17%. ECI is normally filed within 3 months after the financial year end. A company may not need to file ECI if annual revenue is S$5,000,000 or less and ECI is NIL. Returns use Form C-S, Form C-S (Lite), Form C, Dormant company. Checked 23 Sep 2026. Source: IRAS.

What's included

  • ECI estimate and filing
  • Form C-S or Form C
  • Same workspace as the books
  • Due dates on the compliance calendar
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How it works

  1. 01

    Confirm year-end

    Financial year-end sets the ECI window.

  2. 02

    Get the books ready

    Accurate filing needs complete accounts.

  3. 03

    File ECI

    To IRAS within three months of year-end.

  4. 04

    Annual return of income

    Form C-S or Form C, depending on the company.

What is ECI?

ECI is the estimated chargeable income filing. Unless an exemption applies, a company usually files it within three months after the financial year ends. It is an estimate. It does not replace the annual corporate tax return.

What are Form C-S, Form C-S (Lite) and Form C?

These are the annual corporate tax returns, referred to here as Form C-S / Form C. Which one applies follows IRAS qualifying conditions. The usual due date is 30 November of the relevant year of assessment. Any special arrangement is checked separately.

Must you file if there is no profit?

A loss, no tax to pay, or no trade does not by itself mean the company is exempt from filing. Whether a return is required depends on the company and the IRAS rule that applies.

Does this include GST?

Corporate income tax and GST are different taxes. Buying corporate tax filing does not include GST registration or GST filing.

Checked 2 Oct 2026. If an official page differs, the official page prevails.

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Frequently asked questions

Confirm the tax plan

After you confirm the plan, we prepare ECI and corporate income tax for the financial year.

Confirm plan