waituntil

Singapore tax & financial deadlines

IRAS income tax, corporate tax, employer and GST obligations.

This information is provided for general planning and reference only. Tax obligations and deadlines can depend on taxpayer status, fiscal year, reporting period and other circumstances. Dates shown on Wait Until are indicative only and may be subject to change, extensions or jurisdiction-specific rules. Wait Until, its parents, subsidiaries and affiliates do not accept responsibility for any loss, penalty, interest, filing failure or other consequence arising from reliance on the information or any error or omission in the deadlines shown. Final confirmation of all applicable deadlines must be obtained from the relevant tax authority or a qualified tax adviser.

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Upcoming deadlines

Depends on your own dates or a set rule

These follow your financial year, reporting period, payment date or a business-day rule, so no single calendar date is shown.

  • Estimated Chargeable Income (ECI)

    File

    Within 3 months of the end of the company's financial year.

    Due date depends on your company's financial year end.

    Applies to: Companies, unless waived (e.g. revenue ≤ S$5m and ECI nil)

    Authority: Inland Revenue Authority of SingaporeIRASLast checked Sunday 4 October 2026

  • GST return and payment

    GST F5
    File & pay

    One month after the end of each GST accounting period.

    Due dates follow your own GST accounting periods.

    Applies to: GST-registered businesses

    Authority: Inland Revenue Authority of SingaporeIRASLast checked Sunday 4 October 2026