Hi Guys. I arrived in Bangkok on the 8th February and received 30 day visa exempt stamp. I wish to extend this, Iโm wondering how many days before it runs out I can apply for the extension please. It is due to run out on the 8th March.
TLDR : Answer Summary
You can apply for an extension of stay at the Bangkok immigration office when you have 45 days or less remaining on your current visa exempt stamp. It's advisable to apply as soon as possible, even if you just arrived, because the extension will add 30 days to your current expiration date.