7%; register when revenue > THB 1.8M/yr; file by 15th monthly
WHT
1–15% withheld on payments to vendors & service providers
CIT
20% standard; 0–15% for SMEs with capital ≤ THB 5M
Annual Return
Due within 5 months after fiscal year-end (PND.50)
Penalty
1.5%/month on late tax payments
FAQ
Corporate income tax is 20% (SMEs with capital ≤ THB 5M pay 0% on the first THB 300K and 15% up to THB 3M). VAT is 7%. Withholding tax of 1–15% applies to certain payments. BOI-promoted companies can be exempt from corporate income tax for 3–8 years.
When annual revenue exceeds THB 1,800,000 — and some activities need it from day one. After registration you file the monthly VAT return (PP.30) by the 15th of the following month. Exports are zero-rated.
Monthly: VAT and withholding tax filings, payroll and social security. Annually: audited financial statements filed to DBD and the corporate income tax return (PND.50) within 150 days of the fiscal year-end. BBSC handles all of this for a fixed monthly fee.
Yes. Every registered Thai company must file audited financial statements every year — even if it had no activity. Missing the deadline brings fines for both the company and the director.
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