Well, technically its foreign earned income from this year (2024) that is brought into Thailand which is taxable, but also depends on factors such as if your home country has a dual tax treaty to lessen or eliminate the tax burden. Hence, I've been bringing over income earned from previous years (although I'm not even sure how one would determine this). The tax law is so poorly thought out and lacking detail that there is still a lot of ambiguity. I spoke with an accountant and he wanted a consulting fee but the dude had zero idea about how much if any I would owe. A lot of supposed specialists who haven't got a clue how this will turn out are scare mongering and trying to capitalize on it.
nobody knows how and if any taxes of foreigners will be enforced. The Thai tax revenue department has an extremely difficult time even collecting taxes from its own citizens.
Take your time, talk to an attorney/accountant/consultant (not FB), do a LOT of research. Then decide if you want to follow through with your business idea.
Unless she teaches, a US citizens salary must be a minimum of 50k baht a month. I don't know what your wife's skills are, but it'll likely be extremely difficult at her age to get a job. Also coming from the US would she even want to make such comparatively low wages?
As you can see, these estimates are all over the place. It really depends on your lifestyle and where you want to live in Thailand. I've had months where I got by with as little as 30,000 baht but have also spent several hundred thousand numerous times. One thing I know for sure is I've been able to save a LOT more money here than I would've back home with a better lifestyle.
You need to contact your embassy, you cannot travel with a damaged passport. And all you idiots putting down this young person, seriously chill the fuck out.
I believe there is actually a gift tax in thailand but I do not know what the exemption amount is and it appears to be mostly voluntary. I've seen much larger cash deposits and nothing ever happens.