What are the tax obligations for expats in Thailand who stay over 180 days?

If you stay over 180 days in a Thailand tax year (1 January to 31 December) you become tax resident, this means you NEED to pay taxes on income earned this tax year that you brought into Thailand this tax year (bank transfer into Thailand, cash withdrawn in Thailand, cash brought into Thailand, card payment in Thailand). However, if you did NOT remit any income earned this year into a Thai bank account (e.g. Bangkok Bank) via transfer or cash deposit, it will be hard to pay taxes on it because the tax officer won't understand or know what to do without bank statements. So if you want to pay taxes you have to remit your annual income into your Thai bank account, and the only reason you would want to do that is because you don't want to be taxed on this income by your home country. To avoid your home country taxing you on this income, you have to ask a R.O.22 "Certificate of Residency for Tax Purpose" / "Certificate of Residency for Double-Taxation avoidance" to your tax officer, after you have paid taxes in Thailand, so you can prove to your home country that you are Thailand tax resident in case of investigation. You would usually need to provide your bank statements and your proof of income (e.g. invoices).

Also from day 1 you must pay taxes on remote work (thai sourced income) even as a non resident and regardless of whther you remit it or not. Source: 5 accountants, all global accountancy firms published info, etc. You can offset this with DTAs with your country if they exist.

So what you are saying is that if you come for 3 months then leave for 6 months and then come back for 3 months before leaving again then you are expected to pay tax. So you mean all those old pensioners need to pay tax on their pension even if they aren't making money in Thailand. Sounds a bit harsh.

I've never heard of anyone that isn't working and withdraws money sourced from foreign banks at Thai ATMs AND pays taxes on that money. For me at least that's unheard of still.

where did you read this "4. From reading a few docs and trying to make sense of it...am I right that regardless of a dual tax agreement if you stay over 180days you need to report the remittances and show proof of tax paid in home country etc?? " ?

It look to conflict with 3.

1) Correct if in a tax year.

2) False, only assessable income is taxed.

3) Correct, you claim a tax credit against Thai tax liability.

4) False, only assessable income above minimum thresholds is reportable.

Is that correct? Your savings account you withdraw from an ATM you have to declare?? Sounds nonsense

I spent around 4000€ monthly here, housing rent massages sports

Not gonna pay more than that.

I want boom boom for every 1000 baht I pay in taxes

If you can prove the remitted money was from savings not earnings before the year you become a tax resident, those funds don't automatically give you a tax liability.

You've got the gist of it but it's not a random 180 days. If you stay 180 days or more in a Thai tax year (a calendar year) then you are a Thai tax resident

Up to you, 1000s of people don't do anything without any repercussions.

What tax law?!