Am I a Thai tax resident if I stay 180 days?
Short answer
Yes. Section 41 of the Revenue Code treats an individual present in Thailand for 180 days or more in a tax year as a resident for tax purposes. Residence affects which income is taxable and which filings are required.
Residence is counted per tax year and is a question of physical presence, not of visa category. A long-stay visa does not create residence and a short-term visa does not prevent it.
Treatment of foreign-source income has been addressed in Revenue Department guidance that has changed over time, so a current-year check against official guidance is essential before filing.
Reviewed as of 2026-08-04. General guidance only, not case-specific advice and not a guarantee of outcome. Government fees, conditions and processing times are set by the responsible authority and can change. This site does not publish prices — please ask our staff.
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