You are a Thai tax resident if you remain 180 or more days a calendar year. You do not need to apply for a Thai Tax ID number if you do not have Thai tax liability. If you do have income over THB120,000 in a calendar year remitted to Thailand, then you need to file a tax return and will need to get a Tax ID Number (TIN) You can get this from your local revenue office. If people would like help with this we have a paid service to obtain on their behalf.
Learn more about Thailand tax residency by listening to a short podcast here.


