Lived here constantly for 30 years, and have yellow book/pink card and tax ID, so without doubt I'm resident for tax purposes and have to pay tax on income sent here.

Now in year 31 I decide to stay here for less than 180 days.

Is it really written in stone that for that single year I am not a tax resident, and can transfer as much money in as I want without paying income tax?

Is it really that simple, or are it just assumptions without any evidence?

Note, in year 32 I would again stay here full time.

I think it is written in stone that if you understay the 180 days in any given year you are not a tax resident in Thailand during that year.

Whether all the money transferred during that year is considered tax-free is however another matter. I think there might still be an issue as to whether all the money remitted during said year was earnt during that same year or whether part of it was earnt while you were a tax resident in Thailand.

7 minutes ago, JackGats said:

I think there might still be an issue as to whether all the money remitted during said year was earnt during that same year or whether part of it was earnt while you were a tax resident in Thailand.

But that is my question. Obviously all money will have been earned during the years I was tax resident, but any foreign earned income isn't due any tax as long as it isn't transferred.

Then, if I'm indeed no tax resident during year 31, it would also not matter when the money was earned.

The main reason I started this thread is, that I know if I still lived in my home country, and went on a 200 day holiday, I would remain tax resident there for that year.

If you stay under 180 days in a calendar year in Thailand you are considered non-resident for tax purposes and can remit billions tax-free. Period.