Estimated Chargeable Income (ECI) Filing
Companies must file an Estimated Chargeable Income with IRAS within 3 months of their financial year-end. The ECI is a preliminary estimate of the company's taxable income for the financial year. A waiver applies automatically if annual revenue is S$5 million or less AND ECI is zero.
Who this applies to
- All Singapore-incorporated and resident companies
- Singapore branches of foreign companies
- Exemption applies only if BOTH conditions are met: revenue is S$5 million or less AND ECI is zero
What to file
Estimated Chargeable Income (ECI) via IRAS myTax Portal. The estimate is based on management accounts and applied tax adjustments. It does not require audited financial statements.
How to file
File online via the IRAS myTax Portal (mytax.iras.gov.sg). The company's authorised representative or tax agent logs in using Singpass or CorpPass. No paper filing is accepted for ECI.
Payment due
Tax is not due at the ECI stage. Tax payment arises after the Notice of Assessment (NOA) is issued following the final Form C / C-S filing. Companies that file ECI early (within 1 month of FYE) may qualify for an interest-free instalment plan spread over 10 months.
Penalties for missing this deadline
IRAS may issue a composition amount (fine) for late ECI filing. IRAS may also raise an estimated assessment based on prior-year data. Persistent non-compliance can result in court proceedings. Interest accrues on late tax payments from the due date.
Filing checklist
- Confirm whether the ECI waiver conditions are met (revenue and ECI both nil or above threshold)
- Prepare draft management accounts for the financial year
- Calculate estimated chargeable income including applicable exemptions (SUTE or Partial Tax Exemption)
- Log in to IRAS myTax Portal via CorpPass
- Complete and submit the ECI form before the 3-month deadline
Documents you'll need
- Draft management accounts or trial balance for the financial year
- Capital allowance schedule if applicable
- Tax computation (informal, for ECI purposes)
- SUTE or PTE eligibility confirmation if relying on these exemptions
Common mistakes to avoid
- Assuming the ECI waiver applies without checking both conditions (revenue and ECI both must qualify)
- Missing the 3-month deadline due to confusing the financial year-end with the calendar year-end
- Significantly underestimating ECI, which can attract penalties if the final chargeable income is much higher
- Forgetting to account for add-backs (non-deductible expenses) and capital allowances when computing the ECI estimate
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