Tax services for expats in Thailand

What is my Thai tax ID number and how do I find it?

December 9, 2025

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The information on this website is for informational purposes only and is not professional tax advice. For full details, please consult our complete Tax Advisory Disclaimer.

Your Thai tax ID number, also called your Tax Identification Number (TIN), is the personal taxpayer number issued to you by the Thai Revenue Department. It is used on all tax filings, bank reporting and official correspondence.

If you already have a TIN but cannot locate it, you must visit your district Revenue Office with your passport and proof of address. Officers can retrieve your tax ID number from their system and reissue it. There is no online or phone service to look up your TIN.

Category: TIN