What happens if I overstayed my visa by one day and attempt a land border run into Myanmar?

and we are done. IF the O/P is gonna try to bounce out and back in by LAND they need to cancel their extension BEFORE they head to a border. Most land borders won't let you stamp out on an extension that hasn't been officially canceled at the immigration office first.

BUT

IF they're gonna fly out, they'll be stamped out (which doesn't officially cancel the extension) and not have a problem flying back in.

Remember though, you will need to go to the immigration office and cancel their previous extension once they get back.

One last time, stamping out of the country on an extension does NOT cancel it officially.

I was one day over about 5 years ago .

Last time at airport they printed off my past visas because I had new passport . And started pulling me up on this . Best to avoid any overstay even if only one day

maybe this helps, look inside the passport. There is a difference between a visa, top picture and an Extension of Stay, bottom picture

Ok, I'm quite confused right now. So let's try and figure out what's REALLY going on:

1. What is your current visa status? Are you on:

a. A Non-B with a three month entry

b. An Extension of stay based on employment

c. Some other type of visa?

2. If you do not have an extension, what is the Admitted Until date on your entry stamp?

3. Do you currently have the work permit on you, or is it at the school?

You can not cancel a VISA, you must cancel an Extension of Stay, two total different things

You will be not the first and not the last who manage to forget the days and go into overstay. Go to the border, report that you have overstay of 1 day, pay the 500 Thb fine, get stamped out, and continue with the rest of the border crossing.

What's your nationality?