Good question, been wondering about that myself. I suppose local immigration could put a stamp with the visa type, but this generally only reflects your permision to stay date, not visa expiration date.
You will have to show the visa which if e-visa is a pdf, and wont be any type of stamp in your passport. (Only your previous entry and exit stamps). It is highly unlikely any other documentation is required at that point, unless they specifically target soft option as the other options havent got simple suporting paperwork that can be shown at passport control.
for extensions i agree, its usual process to produce the same documentation. But i very much doubt that anything will be checked on entry by the boarder guard on a visit. While the soft options could require a pdf with bookings/schedule as it would be a quick check, non soft options would be difficult to have a document that could be quickly checked.
Assuming your enquiring about an e-visa DTV, you will not have a physical visa or visa stamp in your passport to transfer to my knowledge, depending on your usage you may have entry and exit stamps. Most instances on change of passport, people go to imigration to transfer Extension of stay and re-entry permits not visa's. So there are two scenarios in that you are entering Thailand and you new passport doesnt match your pdf visa, or your in Thailand and change passport, the 2nd one you can probably do something at local immigration, but the first one needs understanding before you travel.
Are they not asking about the Kor Ror 22 which should have been obtained from a local Amphur if marriage was abroad and involved a Thai citizen, or Kor Ror 2 if married in Thailand? Either should just involve a trip to the Amphur to produce a new copy.
Thailand works on a remitance basis, so only money received in Thailand (by what ever method, transfer, cash, ATM) is considered for Tax purposes. Currently money earnt and that remains outside of Thailand is not considered. Tax is only paid by you manually at the end of the year on what you declare and calculate as tax owed. (Twice a year if the income is from rental income). Tax is only owed on assesable income, and if dta in place tax already paid can be offset against the tax owed in Thai as a credit as well as Thai tax allowances reducing any owed amount to possibly zero. This has always been the case. The recent change basically meant that money earnt in a year previous to the tax year, but remitted in the tax year is now treated as assesable unless earnt prior to a static
None of what i've seen in this thread is about anything that changed recently. Everything mentioned has been in place for many years. Observance of it and government management of it might be questionable. A good set of webinars can be found at expattaxthailand.com this one is on Australian dta.
the only other stipulation is if accessable income is greater than 120k baht, if your income because of DTA detail or can be proven to be excludable (wholly earnt prior to 2024), so not assessable, their is no need to file a tax return. Wouldn't exclude you from tax audit, or tax owed payment if they don't agree with your proof.