I have a Non-O Multiple states to enter before the beginning of December this year. I just came back to Thailand at the end of October and have until the end of January before I need to apply for a new visa.

 

If I want to do an extension for one year, am I supposed to apply 30 days before the expiration of the visa or 30 days before the end of my current entry?

 

Thanks.

You can apply for the extension of stay during the last 30 days of the 90 day entry you got from your visa.

You do not have to wait for your visa to expire to apply for the extension. It can be done for any of the 90 day entries from the visa

3 hours ago, chakeeoyen said:

If I want to do an extension for one year, am I supposed to apply 30 days before the expiration of the visa or 30 days before the end of my current entry?

Neither.

 

You can apply anytime within the last 30 days of your “current entry”. The ‘admitted until’ date stamped in your passport.

 

The expiry (‘enter before’) date of your visa is irrelevant. That is simply the last day you can use the visa to enter the country.