Why 7/107 and not 7% when extracting VAT?

A VAT-inclusive price is 107% of the pre-VAT price, so the VAT is 7 parts out of 107. For example, 1,070 × 7 ÷ 107 = 70.

What is the VAT rate now?

7% (6.3% plus local tax) under Royal Decree No. 807, in force until 30 September 2027.

Use it to check numbers. For filing, rely on your documents and check with the Revenue Department or an accountant.

Add VAT or extract it from a VAT-inclusive price, rounded per the Revenue Department

Verified against sourcesLast verified 25 September 2026Valid until 30 September 2027

Your price

Price

THB

VAT rate

Currently 7% (6.3% + local tax) until 30 Sep 2027

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7% = 6.3% under Royal Decree (No. 807) B.E. 2569, plus local tax of 1/9
VAT is rounded per Revenue Department Order P.86/2542: a third decimal below 5 is dropped; 5 or more rounds up
One amount at a time. Invoices with many lines can differ by a few satang if each line is rounded

Internal reference: reference/03_vat_thailand.md

Results support decisions. For tax, legal, financial or construction matters, please check with a professional.