Thanks for the link.
Ofc a TIN doesn't mean you are tax resident. But without TIN, seem also obvious you are not tax resident too (or more difficult to prove it to another country).
My point was more about to have the TIN + declare some income in Thailand, without necessarily be there more than 180days.
I don't know if you are into crypto, but I cannot find what is currently applicated in Thailand regarding the WHT.
I read in some place that thailand tax 15% (WHT) for any capital gain in crypto. I suppose CEX in Thailand charge / take directly maybe 15% of your selling? But I never saw any WHT applied on Kraken or Binance for example.
As these exchanges are also located outside Thailand, is there any loophole / specifity to be tax free (like the same for the traditionnal financial market capital gains) ?
Don't know the reliability of this website :
Thailand Cryptocurrency Income Personal Tax
If I understand well, the tax should only apply if you cash out from a CEX located in Thailand. If abroad, and not remitted in Thailand, the 15% WHT not apply. Someone can confirm?