Can I revert back to a DTV visa after applying for and using a work permit visa in Thailand?

I am 86 years old and have a DVT Medical Wellness visa. I applied for it myself 10 days ago. I sent all the documents requested by the embassy (20 pages), including my hospital appointment in April 2026. I am now waiting for a decision; if it's not approved, no problem. My plan B is visa-free entry every four months, a 21-day stay in Thailand for my health update, and then departure. I would also enter similarly with a DVT visa, but definitely not for a long-term stay of 180 days.

I am in the same boat now. However, each time I re enter Thailand, they ask if I am entering on DTV or work permit.

Its definitely still in the system..

You have to apply for a new dtv. You can cancel the old visa and work permit which is usually done by the employer when your contract is up . Another way is just leave thailand your non b without re entry permit will be cancelled. Then where ever you go apply for dtv

So when you moved to the visa that supported the work permit, the dtv should have been cancelled.

The only place that can cancel a visa (legally) is the issuing office / embassy.

My sense is despite this being law, it frequently isn't done. I know when I moved from a dtv to another class the boi cancelled my permission of stay, but I suspect just did nothing about the visa.

This then creates a legal mess. I would not try to reuse an old dtv as it could result in the cancelling of the permission of stay, and put you into an accidental overstay, with the possible blacklisting that can come from that. I know that sounds like scaremongering but the possibility exists.

Get a new one would be my advice.

You can't get a work permit on a DTV. If you got one, it means you got another visa. If you got another visa, the DTV would be void as you can't hold two valid visas at the same time.

Work permit visa? NOT in Thailand.

a Work Permit is a permit from the Ministry of Labour that allows you to work as described, employer, place of work and work description

IT does not let you stay in Thailand.

NEXT to this Work Permit you need a legal stay in Thailand, a visa or extension of stay which allows you to work in combination with that work permit.

Most used the Non Immigrant B visa.

As you can only have 1 valid visa for Thailand at the time, you cancel your DTV, apply for a Non Immigrant B visa and work permit, when both in your pocket you can start work,

When you stop work you cancel the work permit and visa at the location where you got them issued, leave the country and apply for a NEW DTV.

You can't hold two visas at the same time.