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What should I do if I mistakenly overstayed my Non-O visa by one day in Thailand?

Thailand visa rules Non-O visa visa overstays immigration issues expat advice

Nov 21, 2025

16 hours ago

Jason ******

ORIGINAL POSTER

I paid for 90 days non visa o , and got stamp at airport for 89 days , which has messed up my flight back home ,according to them I overstay one-day, does this not look good for thai immigration and future visas. I told embassy date I go home when I get the non O and also put it on TDAC , don't they read things before they do stamp in passport ?

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TLDR : Answer Summary

The user reported confusion regarding their Non-O visa duration after receiving an 89-day stamp upon entry, which led to a perceived one-day overstay. Community members clarified that the day of arrival is counted as day one for the duration. Thus, the overstayed day is possibly due to the user's miscalculation rather than an immigration error. They reassured that a one-day overstay is generally not a severe issue if the person departs before midnight.

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Stuart *********

No issue here- if you leave before midnight technically no overstay

15 hours ago

Varapa *********

If you don't know the rules, you should study them first. Or ask others, not complaining post about Thai immigration. And also if you leave before midnight will not overstay

15 hours ago

Jacobus **************

@Varapa ********

Correct...

15 hours ago

Reply to

Jacobus **************

J **************

The first day in the day you arrive ..

15 hours ago

Zak ********

What do you think?

*****

15 hours ago

Ken *************

Nov 20 - Feb 18

11+31+31+18. = 91

Day counting won't include Nov 20th. Immigration will.

15 hours ago

Jacobus **************

One-day overstay is not a problem at all.

15 hours ago

Ronnie ********

@Jacobus *************

I just returned with a one day over stay no fine no problem

15 hours ago

Todd *********

@Ronnie *******

check what is written on your stamp

14 hours ago

Matthew *********

@Ronnie *******

I had over stay by a few days. No worry. No fine or over stay stamp.

15 hours ago

Jacobus **************

Mostly that's the normal procedure.. Safe trip.

15 hours ago

Reply to

Jacobus **************

Kenneth *******

15 hours ago

Jeremy ******

Day you arrive is day 1. So you have probably miscalculated

16 hours ago

Elías ********

The first day is day 1, so I'm pretty sure the error in the calculation was yours, not theirs. Also, you could have seen the date on the stamp to change your flight or do something else.

16 hours ago

Jason ******

ORIGINAL POSTER

@Elías *******

the airline has counted my days , and the insurance for health cover has given me the 90 days, which correspond with my dates .

16 hours ago

ArticulateC***********

@Jason *****

open a calendar and count the days - when you include November 20th and Feb 18th as days to count, the total days is 91.

11 hours ago

John **********

@Jason *****

if you arrived on the 20th you actually need to put the 19th in Google to get the correct day count. The way you're doing it the 20th isn't counted when it should be

12 hours ago

Greg ***********

@Jason *****

Immigration does not count like this. . . . the day you arrive is day number 1, this day started in the early morning at 0:01am, and the last day is day number 90 when you have to leave Thailand until midnight. You got stamped EXACT 90 days of admitted stay

13 hours ago

Peter **********

@Jason *****

Correct if you want to know the number of days BETWEEN two dates

But your arrival day is day 1

So, unfortunately the errors is yours

15 hours ago

Daniel *******

@Peter *********

this my dude. You’re confusing “number of days between two dates” with Thai immigration policy which starts on 1, not 0

14 hours ago

Peter **********

@Daniel ******

EXACTLY what I said to this guy, so I really don’t understand your comment to me???

13 hours ago

Elías ********

@Peter *********

what the airline or Google say has zero importance. Thailand immigration has its own rules, and day 1 is the day you arrive. Regardless, after you saw the date on the stamp you could have asked or do something, before overstaying.

15 hours ago

Peter **********

@Elías *******

EXACTLY what I said to this guy, so I really don’t understand your comment to me???

13 hours ago

Elías ********

@Peter *********

sometimes FB automatically tags the wrong person. My answer was intended for the OP.

12 hours ago

Reply to

Elías ********

Jan ******************

There is no communication between the embassies that issue visas—where you provide a travel plan—and Immigration regarding your actual entries. The TDAC is merely an electronic arrival card, and providing an intended departure date is optional. When you are stamped in on a 90-day Non O visa, the day you enter counts as day one and the day you leave counts as day ninety.

16 hours ago

Reply to

Jan ******************

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Will a one-day overstay in Thailand cause me problems at the airport?

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