What are the tax obligations for remote workers in Thailand who stay longer than 180 days?

Why would you proactively want to do this?

You don’t get any benefits in return for paying taxes such as healthcare , pension, drinkable water here in Thailand etc, don’t be a fool

Put some money away incase they do enforce it but proactively paying tax on remitted income is downright theft from this government… you are already propping up many Thais livelihoods by spending here

All you doing is lining the pockets of corrupt Thai government officials, misuse of government budgets here is ridicolous

Do some good research and you may discover whilst you might have some paperwork to be filed you will have little or zero Thai tax liability. It depends on your personal financial circumstances and everyone’s is different.

You should visit your local tax office to begin the process. Explain your situation they may or may not give you a Tax ID.