Thailand Compliance Guide

Filing requirements, deadlines, and fees for Thailand business entities.

Registrar: Department of Business Development (DBD), Ministry of Commerce ·Entity types: Private Limited Company (Borisat Chamkat), Public Limited Company (Borisat Mahachon Chamkat), Branch of Foreign Company, Representative Office

Filing Obligations

Annual Financial Statements Filing

Annual

Thai companies must file audited financial statements with the Department of Business Development within 1 month of the AGM. All limited companies require an audit by a licensed Thai CPA.

Deadline

Within 1 month of the AGM (AGM must be held within 4 months of FYE). For December FYE: AGM by 30 April, filing by 31 May.

Fee

No filing fee

Late Penalty

Fine of up to THB 50,000 for the company and THB 50,000 for each director.

Filing Method

Online via the DBD e-Filing system

Applies to:Private Limited Company (Borisat Chamkat)Public Limited Company (Borisat Mahachon Chamkat)Branch of Foreign CompanyOfficial source

Corporate Income Tax Return (PND 50)

Annual

Thailand levies corporate income tax at 20% on net profits. SMEs (paid-up capital ≤ THB 5 million and revenue ≤ THB 30 million) benefit from reduced rates: 0% on the first THB 300,000 and 15% on THB 300,001–3,000,000.

Deadline

Within 150 days of the end of the accounting period (by 31 May for December FYE). Online filing extends the deadline by 8 days.

Fee

No filing fee

Late Penalty

Surcharge of 1.5% per month on unpaid tax. Fine of up to THB 2,000 for late filing.

Filing Method

Online via the Revenue Department e-Filing system

Applies to:Private Limited Company (Borisat Chamkat)Public Limited Company (Borisat Mahachon Chamkat)Branch of Foreign CompanyOfficial source

Half-Year Corporate Tax Return (PND 51)

Semi-annual

Thai companies must file a half-year return estimating taxable income for the full year and pay tax on half of the estimated amount. The estimate must be at least 75% of actual full-year income to avoid penalties.

Deadline

Within 2 months of the end of the first 6 months of the accounting period

Fee

No filing fee

Late Penalty

Surcharge of 1.5% per month plus fines for late filing. If estimated profit is less than 75% of actual, additional 20% surcharge on the shortfall.

Filing Method

Online via the Revenue Department e-Filing system

Applies to:Private Limited Company (Borisat Chamkat)Public Limited Company (Borisat Mahachon Chamkat)Official source

VAT Return (PP 30)

Monthly

Thailand levies VAT at 7% (temporarily reduced from 10%). Registration is mandatory for businesses with annual turnover exceeding THB 1.8 million.

Deadline

15th day of the following month

Fee

No filing fee

Late Penalty

Surcharge of 1.5% per month on unpaid VAT. Fine of up to THB 2,000 for late filing.

Filing Method

Online via the Revenue Department e-Filing system

Applies to:Private Limited Company (Borisat Chamkat)Public Limited Company (Borisat Mahachon Chamkat)Official source

Key Dates

Within 4 months of FYE (by 30 April for December FYE)AGM deadline

Within 150 days of FYE (by 31 May for December FYE)Annual corporate income tax return (PND 50) deadline

Within 2 months of half-year endHalf-year corporate tax return (PND 51) deadline

Frequently Asked Questions

What is Thailand's corporate tax rate?

The standard rate is 20%. SMEs (paid-up capital ≤ THB 5 million and revenue ≤ THB 30 million) pay 0% on the first THB 300,000 and 15% on THB 300,001–3,000,000. The standard rate applies above THB 3 million.

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Last updated: 2026-02-27. Information is provided for general guidance and may not reflect the most recent changes. Always verify with the official state registrar.