Overstay on a DTV visa is usually not something to panic about, as long as you handle it correctly.
If you realise you have overstayed, you can go to the immigration checkpoint when leaving Thailand, pay the overstay fine, and your DTV visa will still remain valid. This is because DTV is a multiple-entry visa.
➡️ Once you re-enter Thailand again, your stay will reset to Day 1, and you will receive another 180 days from the date you arrive.
However — the part you really need to worry about is this:
If you get arrested or stopped by the police before reaching the immigration checkpoint (even for a small petty case), then this becomes serious. In that situation, you may not only pay the fine, but you could also face a possible blacklist under immigration rules.
So if you become aware that you’re overstaying, the safest thing is to exit the country as soon as possible and clear it properly at the border.
Hopefully, you can use a letter from your Embassy, If the new passport is issued by the embassy inside Thailand, you should have a Letter from Embassy confirming replacement of old passport with new passport
Please bring everything you have to the local Immigration Office where you registered your TM30, and ask them to transfer your visa stamp to your new passport. No government fee needed
Just keep filing taxes at the source country where your money is originally being made. Thailand has a double tax agreement anyway. And likely the staff at the revenue office don't want to deal with the extra admin work setting you up with a tax ID
Yes, DTV visa holders are allowed to apply for a Thai tax ID number, but you must qualify. Thailand recognizes 8 different types of income, and the supporting documents you need to prepare will depend on which type of income applies to you.
There isn’t one fixed checklist that works everywhere—requirements can vary by province and even by the local Revenue Department office.
The best way to be sure is to contact the Revenue Department office in the area where you live and ask directly what documents they require. That way, you’ll get the exact list for your situation. Good luck!
They clearly have a policy of non-refundable. If you wish to insure that to get refund from rejected application better to consider another gym and make sure they have the right paperwork to support your visa application