The process is easy. Depending on the office you use will determine how fast it happens. In Bangkok probably a few hours. My guess in UT would probably be 15 minutes or so.

Apply early. They add on the 30 days to your existing stamp so there is no downside to doing it early.

I have no idea of the policy of UT immigration but most offices will allow you to apply 30 days prior to your stamp date (some allow 45 days).

@Daniel *****

And how would that help the OP?

Your 90 day visa is a single entry visa. Once you enter Thailand you no longer have a visa. It’s used. Finished.

What you have is an entry stamp allowing you to stay for 89 further days (entry day is day 1).

If you want to leave and keep that entry stamp “alive” you’d need a re-entry permit. On return you’d be stamped in for the exact date you were originally given.

Each entry needs a TDAC. Each time you return your house owner (or hotel) should in theory file a TM30.

Yes on each new entry you’d be given a new 60 day exemption stamp.

That said you can’t live in Thailand by constantly border bouncing, but what you are doing is a typical tourist type thing so should have no issues whatsoever.

No but they would if you tried to do an extension.

It’s almost impossible these days to open a bank account by yourself without a long term visa. You may find an agent that can help you but even some of them are saying no chance.

Get a Non O before you come and during the first 30 days open the account and transfer 800k. Then when the money has been in for two calendar months apply for the year extension.

As in living here yes. As in Thai residence (permanent) no.

Depends on the office you use. Some like Bangkok, Chiang Mai, Phuket and possibly others allow 45 days. Most others allow 30 days.

Not sure what you’re asking here. Did you apply to convert your visa exempt entry (or tourist visa) to a in country Non O visa? Or do you mean you’ve applied online via the evisa system for a Non O