Can I convert a 60-day tourist visa to a retirement visa in Thailand?

Yes ....If you are over 50 and have required funds in a Thai bank account. I did mine while on a 30 day tourist visa.

What we are NOT gonna do is have this post turn into every Tom Dick and Somchai weighing in with their two cents worth on what needs to be done to accomplish going from a tourist visa entry to first a 90 day Non-O and then a yearly extension.

The O/P is not even IN the country at this time. They need to get in, get thru quarantine, and then go to their immigration office to get the hand out that lists the requirements for the 90 day Non-O visa and the requirements for the yearly extension.

Good luck to they O/P (y)

In on a tourist 60 days, open bank account put in 800,000Baht, this will take you below the 60 days you need the money in the bank with running around, so a one month extension, you have to get your timing correct with 14 days left on your extension, into immigration, all yes sir's, paperwork perfect, that its changed from a tourist extension to a non O, then the last 14 days of that 3 month non O, apply for what you call your retirement, which last a year, then renew again, if you leave Thailand at any point you must get a re-entry stamp or if your leaving a good few times, a multi entry re-entry stamp, its not difficult, just a bit of running around & of coarse your over 50 years old, at immigration in phuket, they'll have you photo copy stuff you thought, No i wasn't told of that, just do it with a thank you smile, never argue, polite, smile, thank you, say nothing, it sounds a bit harsh, its not, they see & deal with 1000's or 100'000's per months if regular tourism, so its easier to be polite, if not they can be awkward, its not worth it, but its easy, just you need that 60 days period of money in a Thai bank savings account for your non O first

You will need to open a thai bank account as well

Part of your visa requirements

Following

If you meet the financial requirements you SHOULD be able to do it.

I say that because as far as I know, at this time no one has actually entered on a 60 day tourist visa, gone thru quarantine, wound their time down and then applied for an in country Non-Immigrant visa of any type that I am aware of.

All I can say with 100% certainty is the rules for converting a 60 day tourist visa entry to a Non-Immigrant visa inside the country haven't changed at all.

As soon as you get out of quarantine I'd head over to your immigration office get the hand out that lists the requirements of applying for first an in country 90 day Non-O visa based on being over 50 (retirement), then once you get that wait until you can apply for the year extension.

Good luck, the immigration office you deal with is your first stop after quarantine (y)