Only thing you need to be careful is the requirement that your bank account can never drop below 400,000.

So the safest way to make this move is to keep 400,000 in BOTH accounts for a few days.

That means if you have 800k in Bangkok Bank, transfer 400,000 to your Kasikorn bank account and give it a few days to settle there. Then you can transfer the other 400k over.

If you just keep 400k in your Bangkok Bank account during the middle months, deposit a new 400,000 into your Kasikorn account and leave it a few days before withdrawing from Bangkok Bank.

Make sure you do this soon, before you hit the 2 months before you will apply where your accounts is required to be at 800,000.

Note for your extension that you'll need to provide the bank letters and 12 month bank statements for BOTH bank accounts. But next year you will be able to just use your Kasikorn account.

Proposed flight numbers should be fine. If they want actual tickets, they will send you a request for information.

You can apply any time you want to convert from visa exempt to non-O, but must have at least 21 days left on your entry stamp.

You cannot apply for extension after 30 days. You would need to wait at least 45 because in Chiang Mai you can only apply for extension during your last 45 days.

Make sure you're aware if you have Bangkok Bank that if the money you're going to use for visa/extension has not been in your account for 4 months already on the day you ask for the bank letter, they'll require you to sign something freezing your funds for 4 months from the date the letter is issued. All funds in the bank at that time will be frozen for 4 months.

Getting the visa from home saves you at least 2 trips to immigration. The first trip to apply for conversion and the 2nd trip to pick up the visa stamp after the under consideration period.

Also if you're applying for non-O based on retirement you must be able to show the funds in your bank came from overseas when applying in country. This is not the case for the extension.

NOTE: No immigration office in Thailand allows you to apply for trailing spouse visa. You will not be able to get a non-O visa for your foreign wife based on your visa. She'll have to qualify for her own visa. I don't know of any embassies in the world that still allow for this either if you have a non-O visa. Some do still allow it if you get a non-OA visa. But then you have the insurance requirement.

You cannot extend a non-O visa for 1 month. You can only apply for the 1-year extension, unless you're married to a Thai (then you can do the 60 day "visiting Thai family" extension).

There's no simply way to get 4 months in Thailand without doing a border bounce. For the least amount of hassle, suggest getting the non-O visa from the embassy, and just doing a border bounce and returning visa exempt after that.

You're correct. No need to do anything except exit Thailand. It's only long-term extensions where an upcoming extension is planned that really need to be transferred.

@Anselm ********

Then you'll receive 60 days at the airport. Do not go to "visa on arrival" window. Just go directly to passport control. Make sure you fill out a TDAC online within 3 days of your trip.

If you need the additional 30 days, you'll need to apply for the 30-day extension from immigration. In Bangkok that will be at the IT Square Laksi office if you arrive without a visa.

@Loretta ******

depends on your passport.

They won't "give" you anything.

You can apply for a 90-day non-O visa if you qualify.

If you are from a visa exempt country, you can qualify for visa exempt entry which is a 60 day permission to stay stamp, and not a visa. This is meant as a short-term tourist entry. You can apply one time for a 30-day extension. If that meets your needs then you should be fine. If you need more time then you might need to look into other options.

Most foreigner accounts are not being frozen due to suspicious of scam though. All of this information is about accounts closed for that.

Most foreigner accounts have been frozen due to KYC, which was specifically called out as being separate from all these hotlines and phone numbers and people to contact for help.

Original and copy should be fine.

The requirements for a CoR vary by immigration office. I don't know specifically what Jomtien asks for, but normally it's as you listed. TM30, passport, possibly rental agreement though I don't think that's normally required at most offices.

The price depends on the office and the time. For example some offices are free or very minimal charge if you wait for 1-2 weeks. But you can try asking if they can do it faster if you need it and they might offer an "express" service for 300-1000 baht.