Free tool
How many days have you spent in Thailand this year?
Thailand normally assesses tax residency at 180 days in a calendar year. This counts yours, trips out included. It is a day count and nothing more — what follows from it is a question for an accountant.
Leave it blank if you were already in Thailand on 1 January — counting starts there.
Trips out of Thailand
The day you leave and the day you come back both count as days here, so a Friday-to-Sunday trip costs one day, not three.
Stays in this browser. Nothing is sent anywhere.
Days in Thailand
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Nothing counted yet Put in the date you first arrived that year, or leave it blank if you were already here on 1 January.
- Counting from
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- Counting to
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- Days in the window
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- Days away
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- Days in Thailand
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Sorting the visa as well?
The DTV Guide covers the tax position as we understand it, along with the 90 day report, the TM30, border runs, and the supporting documents the embassy asks for. Written from getting two of them.
The DTV Guide — £9.99What the 180 days actually means
- It is a calendar year, not a rolling one. 1 January to 31 December. The count resets on New Year's Day and the days do not have to be consecutive.
- It is not the 180 on your entry stamp. That one is per arrival and resets every time you leave. This one adds up every day you were in the country and a border run does nothing to it. Same number, completely different clock.
- Travel days count as days here. Part of a day normally counts as a day, so both ends of a trip are days in Thailand.
- Crossing 180 is not a tax bill. It is the point at which Thailand may assess you. What you owe depends on where your income comes from, when you bring it in, and whether a double taxation agreement applies.
This is a date calculator. It is not tax advice, it does not know anything about your income, and it cannot tell you whether you are tax resident — only how many days it counted. If you are near the line or over it, that is the point to speak to somebody who does UK and Thai tax properly.
Common questions
When do you become tax resident in Thailand?
Thailand normally treats you as tax resident for a calendar year if you spend 180 days or more in the country during it. The days do not have to be consecutive and they are added up across the whole year, from 1 January to 31 December.
Is this the same 180 days as my DTV entry stamp?
No, and this is the confusion worth clearing up. Your entry stamp gives you 180 days per arrival and it resets completely every time you leave and come back. The tax count runs across a calendar year, adds up every day you were here, and a border run does nothing to it.
Do the days I fly in and out count?
Yes. Part of a day in Thailand is normally counted as a day in Thailand, so both your departure day and your return day count. A trip that leaves on Friday and comes back on Sunday costs you one day away, not three. This calculator counts it that way.
Does being tax resident mean I owe Thai tax?
Not automatically. It means Thailand may assess you, and what you actually owe depends on where your income comes from, when you bring it into the country, and whether a double taxation agreement applies. Someone who does UK and Thai tax can answer it for your situation. Nothing on this page can.
Does holding a DTV make me tax resident?
No. The visa you hold and your tax position are unrelated. What counts is the number of days you were physically in the country during the calendar year.