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Thailand tax & financial deadlines

Revenue Department obligations: corporate income tax, VAT and withholding.

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.

  • Half-year corporate income tax

    P.N.D.51
    File & pay
    Verification pending

    Within 2 months after the first 6 months of the accounting period.

    Half-year estimated corporate tax return and payment.

    Applies to: Companies

    Authority: Revenue Department of ThailandRevenue Department — Tax filing and payment deadlinesLast checked Sunday 4 October 2026

  • Annual corporate income tax return

    P.N.D.50
    File & pay
    Verification pending

    Within 150 days after the end of the accounting period.

    Annual return and payment of corporate income tax.

    Applies to: Companies

    Authority: Revenue Department of ThailandRevenue Department — Tax filing and payment deadlinesLast checked Sunday 4 October 2026