What Thai taxes apply to a foreigner staying over 180 days on a DTV visa?

They are hopefully changing the rules already, Thailand is facing a liquidity crisis and needs inflow of cash

They’re planning of making it two years tax-free remittance , but nothing said in Stone yet

My understanding:

Once you're a tax resident, foreign-sourced income (like salary from a foreign job, dividends, rental income abroad, etc.) becomes taxable if you bring it into Thailand in the same year you earned it.

For example, you earn £50,000 in the UK in 2025 and transfer it to your Thai bank account in December 2025, it is taxable in Thailand.

However, if you earned that same £50,000 in 2024 and only transferred it to Thailand in 2025, it’s not taxable, even if you’re a tax resident in 2025. Thailand taxes foreign income only if remitted in the same year it's earned.

good luck to the authorities to proof that your money is INCOME and not just old savings… this shows how useless the system is and that you not have to worry.

Following

Obviously you WILL remit money to Thailand as you will live here. Every penny you turn over to a Thai landlord, restaurant, bar etc is fully traceable. That… is what remittance is

i wouldn’t worry too much about it if you’re not making transfers into thailand. People here suggesting that the thai tax dept will be able to link your credit/debit card to your passport are in dreamland.

Secondly, although this is not yet confirmed, but its likely that there’s in an incoming change to the tax stance on remitted funds :-

if it is earned within the current or previous tax year, it will not be subject to tax.

1) After 180 days in the Kingdom in a calendar year you become automatically Thai tax resident and subject to Thai tax law. Thailand charges every tax resident personal income tax (PIT) on a sliding scale from 0-35%. PIT is charged only against assessable income therefore not all funds remitted may attract a tax liability.

2) It is irrelevant that you don’t have a Thai bank account into which you remit funds. The Revenue Department classifies a remittance as “bringing into” Thailand either electronically or physically. If you move funds into Thailand via apps it doesn’t make any difference the Revenue Dept will still assess it for a tax liability.

3) You need to file taxes once a year and ONLY if you qualify. You can be tax resident and never have a tax filing requirement due to the funds you bring not being assessable income.

4) You will need to get a taxpayer ID within 60 days of remitting assessable income.

You will need to file taxes if you remit above certain minimum thresholds (60-220k baht depending). Obtaining a TIN is a free service at any Revenue Office. Filing a tax return is a free service, filing online is a free service.

5) If you come with a DTV and enter Thailand in July then you have five months to enjoy tax free remittances on ANY funds as you would not be tax resident in that year.

It's 180 days or more in a calendar year that makes you a Thai tax resident. If you transfer assessable income (earnings, dividends, etc) to Thailand by any means then such income is liable to thai tax. Even if you use a credit card and pay the balance off from income that is subject to Thai tax, similarly even if all you do is pay bills in Thailand by transferring income to the recipients bank account then that money is taxable

As has been mentioned here before get a local tax advisor.

UK and Thailand have a double taxation treaty FYI

If you stay in Thailand for more than 180 days you do taxes here . If not than you dont have to worry about it. All they care is about the 180 days in the country…the way you use the money here is up to you and the means you use too. Hope this helps

If you are a tax resident in Thailand the tax return is submitted once per year by the 31st March following the tax year which is same as calendar year. Even of you are tax resident and have a TIN you may not need to submit a return of you have no assessable income. In fact some Tax Offices will not issue a TIN of you have no assessable income.

Paying for expenses with a foreign card is considered as remitting money into Thailand.

You need to have a look at the relevant DTA (if there is any) to determine what will be considered as assessable income by the Thai revenue service in your case.

I think you need a Thai tax advisor…

ireland has a non dom system. You can orientate on that.