I encourage everyone to educate themselves as the only tax adviser looking after your interests is yourself. Please go read the information published on the Revenue Department website. Thai tax law is not that complicated. You don’t have to be a tax lawyer to read and understand tax law. I am not a Thai lawyer but I know it’s illegal to ride a motorcycle without a helmet....simply educate yourself.
ok to obtain a TIN you must have assessable income above minimum thresholds. You can get a TIN without being tax resident if you have domestic income, otherwise you will first have to become tax resident. Both scenarios require assessable income above minimum thresholds.