I heard that you need to stay in Thailand for more than 180 days to become a tax resident. Does the 180 day count get reset if I leave the country and come back in?
TLDR : Answer Summary
To become a tax resident in Thailand, one must stay for 180 days or more within a calendar year. Leaving Thailand does not reset this 180-day count; it is cumulative within the calendar year. Therefore, if you are in Thailand for 180 days or more, you will be considered a tax resident, regardless of any trips taken outside the country.