Will I be charged an overstay fine if I go to the immigration office on January 4th after my tourist extension expires on January 1st?

Immigration wiill be closed on jan 3 th

The next holiday in Thailand is December 31st (source: .3/permalink/4/) .

If your current "admitted to" stamp expires on the 1st of January, 2022, I highly recommend applying for a 60 day extension of stay based on unable to travel due to COVID-19 on December 29th. December 30th will be busy at the immigration office, and if you are verbally rejected for the 60 day extension of stay, it will be easier for you to acquire the documents (flight out of Thailand? Letter from the embassy? Whatever else they want) to meet the requirements, or to give you time to depart Thailand on the 4th without paying any overstay fines.

Remember too each immigration office has slightly different polices about getting the extension of stay, and advice about Kanchanburi Immigration Office may not apply to Nonthanburi Immigration Office (for example).

Mine finishes1st January also, I will visit in Pattaya about the 28th December

What immigration office are you using?

Chiang Mai, Bangkok, Buriram, Phuket, Chiang Rai and a couple of others all allow people to apply for extensions when they have 45 days or less left on their current stamp. The other immigration offices are 30 days. However, ask your local immigration office for specific details.

Remember too, a 60 day extension of stay based on unable to travel due to COVID-19 is optional and does not need to be granted. See my featured post at

3/permalink/6

For more information.

You can apply now you don't need to wait until 1st