Vat🇹🇭ThailandUpdated 2026-10-25

Do I need to register for VAT in Thailand?

Quick Answer

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.

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Detailed Explanation

## The threshold

A business that regularly sells goods or services in Thailand must register for VAT when its annual turnover exceeds 1.8 million baht.

## When

Before trading, or within 30 days of the day income goes over the threshold.

## Voluntary registration

Allowed below the threshold. It lets you claim input VAT but means filing P.P.30 every month.

## How AccountsOS helps

Finn tracks your turnover against 1.8 million baht and warns you as you approach it.

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

Real-World Examples

Growing consultancy

Turnover reaches 1.8 million baht in August. Register within 30 days.

Common Mistakes to Avoid

  • Waiting until year-end to register
  • Forgetting the monthly P.P.30 once registered

Frequently Asked Questions

Do foreign digital sellers register?

Foreign e-service providers selling to non-registered Thai customers use the same 1.8 million baht test.

Practical Tips

  • Watch the threshold monthly, not annually.

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