In my humble opinion, this is allowed. It already says on every DTV e-visa that employment is prohibited (“Remarks: Employment Prohibited”). The remote-working subcategory only serves - like all other subcategories - the right to stay in the country. It does not make a clear statement like: with this you are allowed / not allowed to do remote work.
In the case of the remote-working subcategory the statement is: Your right of stay is based on remote work. Even if someone enjoys the right of stay under a different subcategory ("my dependent", "Soft Power"), remote work is not necessarily prohibited.
Remote work is, in this view, always not prohibited or even tolerated (maybe welcomed) as long as it does not match the Thai definition of employment or business (essentially work done for Thai or Asian customers that could also be done by a Thai person).
Non-binding opinion of a non-lawyer with a sense of legal understanding.
Anonymous participant 820 I took two weeks' holiday immediately after arriving in Thailand. I also took another two weeks when I visited my home country in the middle of the year. That means I don't have many days of holiday left towards the end of the year.
Anonymous participant 820 In the double-taxation agreement it clearly says that the right to tax goes to Thailand when you stay more than 180 days. The document protects individuals from double taxation, but also regulates which country has the right to tax in which situation.
There is also an official paper from the Thai Ministry of Finance that shows very clearly that, in my situation, my income must be taxed in Thailand.
So I do not think that Thailand wants me to pay tax in my home country.
I have no choice regarding my tax liability, and my tax payment is therefore not voluntary but based on law and objective reasonableness. My salary is, by definition, Thai-sourced employment income, because I perform my remote work on Thai territory. This is a clear statement from a licensed and well-informed tax advisor. Whereby I have additionally cross-checked this statement with official sources.
It is the only right and lawful thing to do to pay my taxes here. As a guest in this country, it is particularly important for me to abide by the laws.
I therefore do not understand your comment on this. Just one comment earlier, you pointed out the tax obligation.