I have a flight out of the country 1 day after my visa extension expires. I understand that in the past there was no penalty for a 1 day overstay. Is this still the case? if not, what is the new penalty? Thank you for your time.

Nothing changed, no penalty but will be recorded in passport.

Thank you. I don't intend to overstay again but the one time shouldn't be an issue... should it? Does anyone have experience with it being a negative? Is it worth the 1,900 baht?

One day of overstay is really nothing to worry about it will have no repercussions later.

The immigration officer do a small blue stamp in Thai that states you had an overstay of less than 24 hours.

One day of overstay is really nothing to worry about it will have no repercussions later.

The immigration officer do a small blue stamp in Thai that states you had an overstay of less than 24 hours.

Thank you I won't change my flight plans nor my girlfriends flight plans as we're both going to udom thani and then Vientiane (One day after my visa expires).

I am glad to hear it's a non-issue, thank you all and have a great day.

If you flying to Vientiane via Udon Thani that is a domestic flight and you will not clear immigration until you cross the bridge in Nong Kai. You will need to pay a fine of 500 baht when you leave.