Vat🇹🇭ThailandUpdated 2026-10-25

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

Quick Answer

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.

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Detailed Explanation

## The rule

Section 83 of the Revenue Code requires every VAT registrant to file P.P.30 for each calendar month, with any tax due, by the 15th of the following month.

## Online

Filing through the Revenue Department's e-Filing system usually extends the date to the 23rd, as the Revenue Department announces each year.

## No sales?

You still file.

## How AccountsOS helps

Finn works out the P.P.30 figures from your books, removes VAT you cannot claim and tracks the date. AccountsOS does not submit the return.

Source: https://www.rd.go.th/english/6043.html

Real-World Examples

October sales

October P.P.30 is due 15 November, or 23 November online.

Common Mistakes to Avoid

  • Skipping a month with no sales
  • Filing late on paper

Frequently Asked Questions

Is there a quarterly option?

No. P.P.30 is monthly.

Practical Tips

  • Upload purchase tax invoices as they arrive so the month closes quickly.

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