What is ECI (Estimated Chargeable Income)?
An estimate of a company's taxable income for a financial year, filed with IRAS within 3 months of the company's financial year-end. A waiver applies if revenue is S$5 million or less AND ECI is zero.
Current Rate (Year of Assessment (preceding-year basis))
17% on chargeable income
Example
A company with a financial year ending 31 March 2025 must file its ECI by 30 June 2025. If revenue is S$3 million and the company is profitable, an ECI filing is required even if the final tax liability is uncertain.
How ECI (Estimated Chargeable Income) works in Singapore
**Estimated Chargeable Income (ECI) Overview**
All companies incorporated in Singapore must file their Estimated Chargeable Income (ECI) with the Inland Revenue Authority of Singapore (IRAS) within three months of their financial year-end (FYE). The ECI is a preliminary estimate of the company's chargeable income for that financial year.
**Filing Deadline**
The deadline is strictly three months after the FYE. For example: FYE 31 December 2024 = ECI due 31 March 2025. FYE 31 March 2025 = ECI due 30 June 2025. FYE 30 June 2025 = ECI due 30 September 2025. The due date does not shift for weekends or public holidays.
**ECI Waiver**
A company is automatically waived from filing ECI if two conditions are both met: (1) annual revenue is S$5 million or less for the financial year, AND (2) ECI is zero (i.e., the company has no chargeable income). If either condition is not met, filing is required. Companies should not assume they are exempt without checking both conditions.
**Basis for Estimation**
The ECI is an estimate based on management accounts. It does not need to be exact. Companies use their unaudited or draft accounts to compute an approximation of chargeable income, applying allowable deductions, capital allowances, and tax exemptions. The final tax is settled when the full tax return (Form C, C-S, or C-S Lite) is filed by 30 November.
**Tax Instalment Plans**
If a company files its ECI early (within one month of FYE), it may qualify for an instalment payment plan, spreading the estimated tax liability over 10 months interest-free. This is an administrative benefit for prompt filers.
**Penalties for Non-Compliance**
Failing to file ECI by the due date attracts a composition amount (fine). IRAS may also issue estimated tax assessments and charge interest on unpaid tax from the due date. If the ECI is significantly understated and the company cannot provide reasonable grounds, IRAS may assess penalties on the underpaid tax.
**Relationship to Form C**
The ECI is a precursor to the annual tax return. When Form C / C-S / C-S Lite is filed by 30 November of the YA, IRAS reconciles the actual tax liability against the ECI. If the actual chargeable income is higher than the ECI, additional tax is assessed. If lower, a refund or credit may arise.
Related terms
Singapore's annual corporate tax return. Form C is the full return; C-S for companies with revenue up to S$5 million; C-S Lite for revenue up to S$200,000. All due 30 November each Year of Assessment.
Singapore taxes resident companies at a flat rate of 17% on chargeable income. New companies benefit from the Start-Up Tax Exemption (SUTE), and all qualifying companies can access Partial Tax Exemption.
A tax exemption scheme for newly incorporated Singapore companies providing 75% exemption on the first S$100,000 and 50% on the next S$100,000 of chargeable income, for the first three consecutive Years of Assessment.
Singapore's national regulator for companies, public accountants, and corporate service providers. ACRA maintains the BizFile+ portal for company registration, annual returns, and filings. Every Singapore company receives a UEN on incorporation.
Confused by Singapore accounting jargon?
AccountsOS explains Singapore terms in plain English and applies the right rules to your books automatically.
Try Free