You must come to Thailand with a Non O visa then you can ask here for a marriage or retirement visa.

@Pete ******

He asked if he can do that on entering Thailand and that is not possible. You might be able to convert after you are in Thailand but that was not the question.

It is true 100%. just read the question, you can not do that on entering Thailand.

@Pete ******

Well I have never heard that and have been here 36 years. So I asked and got this answer: No, you cannot change a tourist visa to a Non-O visa at arrival in Thailand, but you can apply for a change of visa type while you are in Thailand on a tourist visa. To do this, you must apply at an immigration office in Thailand, have at least 15 days remaining on your current visa, and wait for the approval process there. The application must be made before your initial visa expires.

No you can not. To be able to get the retirement visa you must arrive here on a Non O 3 months visa, then after 2 months you can apply for it.

The immigration says if you come w a free tourist visa you can extend at immigraton once and do one border run only. Or in opposite order.

3 days ahead.

And make a note that visa agencies are not legal. They pay their way under the table. This is expensive and illegal.

Very simple. Simply go to the bank as long as you have a NON O visa. You need that visa anyway to apply for the visa. But you can not apply for the visa unless you have less than 30 days left of the 90 day visa.

Crypto.