Thailand Accounting Questions Answered

What is the corporate income tax rate in Thailand?

Thai corporate income tax is 20% of net profit. A small company with paid-up capital of 5 million baht or less and sales of 30 million baht or less pays 0% on the first 300,000 baht and 15% up to 3 million baht.

When is the P.N.D.50 corporate tax return due in Thailand?

Within 150 days of the last day of the accounting period. For a 31 December year-end that is 30 May (29 May in a leap year). Filing online through e-Filing gives 8 more days.

What is P.N.D.51 and how much do I pay?

P.N.D.51 is the half-year corporate tax return. It is due within two months after the first six months (31 August for a calendar year), usually on half of the profit you estimate for the full year.

How does withholding tax work for Thai companies?

A Thai payer withholds tax from many payments and files it monthly within 7 days of month-end (15 days online): P.N.D.1 for staff, P.N.D.3 for individuals, P.N.D.53 for companies. Common rates are 3% on service fees and 5% on rent.

What is the VAT rate in Thailand?

7%. The Revenue Code rate is 10%, but a royal decree reduces it. Royal Decree No. 807 (B.E. 2569) keeps 7% until 30 September 2027.

Do I need to register for VAT in Thailand?

Yes, once annual turnover exceeds 1.8 million baht. Register before you start trading or within 30 days of crossing the threshold. You can register voluntarily below it.

When is the Thai VAT return P.P.30 due?

Every month, by the 15th of the following month, even if you had no sales. Filing online through e-Filing extends it to the 23rd.

Can I claim VAT and tax relief on client entertainment in Thailand?

Partly. Entertainment is deductible for CIT up to 0.3% of gross receipts, capped at 10 million baht. The input VAT on entertainment cannot be claimed on P.P.30.

How much are Social Security contributions in Thailand in 2026?

Employer and employee each pay 5% of monthly wages, on a wage base of 1,650 to 17,500 baht from 1 January 2026. The maximum is 875 baht each per month.

Does AccountsOS issue Thai e-Tax Invoices or file my returns?

No. AccountsOS keeps the books, works out the figures and tracks every date. It does not issue e-Tax Invoices or submit P.P.30, P.N.D. returns, SSO forms or DBD filings. You or your accountant file.