What documents are required to obtain a Thai TIN while holding a DTV visa?

Yes many DTV holders get Thai TIN at local revenue office when they become tax resident. Staff will issue after checking your stay over one hundred eighty days and your income remitted to Thailand. Office is usually quick if you bring full set.

Bring passport with DTV page, entry stamps, TM30 slip, rental contract, and Thai bank proof or Wise slips showing remittance if you have. Some offices ask for work contract or freelance proof and a simple Thai tax form filled at office. Keep copies of all and go early morning.

You could consider reading a book or two before your trip. I’d recommend Unlock Thailand by Isla Rey on Amazon, it includes all the info and insights you need. You should check it out. A very good companion 👌.

Please be careful and seek professional advice.

It seems that you might be trying to avoid tax on income sourced in your home country or elsewhere. Whether you're a tax resident or not, income is still (alomst always) required to be taxed at the source.

Becoming a Thai tax resident doesn't excuse tax payable at the source, nor does it affect your tax residency status in your home country.

Proceed with caution.

Original passport.

Photocopy of the passport’s identity page.

Photocopies of your DTV visa and latest entry stamp.

Yes but via accounting company. Only passport needed.

The locale revenue department did not want / was asking for too much document.

You file the Thai tax return for this year in the first 3 months of next year which would be an appropriate time to request a TIN