Do I need to file my global income in Thailand if I am a tax resident after 180 days?

Quick answer - you only need to file for remitted assessable income not global income.

It depends on your country and their tax laws for double taxation…consult a professional from both your passport holding country(s) and a Thai tax professional or Thai lawyer

can help.

@Jason ****

really you need a professional to advise on your tax status

Neither. If you spend 180 days inside Thailand in any calendar year then you are automatically a Thai tax resident for that year. In any year you are a Thai tax resident and bring 60k baht or more assessable income into Thailand you need to file a Thai tax return for that year. Whether you will pay tax or not is very much dependent on your personal circumstances, what allowances you can claim, tax credits available to you etc. Income not brought into Thailand is irrelevant from a Thai tax perspective

Ask a tax accountant as everyone's circumstances are different, there is no "one fit all" answer