I have a non o retirement visa and usually return to Australia once a year so i have been getting a single re entry permit for 1000 baht, you can get a multiple re entry permit for 3800 baht my question is if i purchase a multiple re entry permit will it last for as long as i live in Thailand or would i have to renew it every year when i renew my extension of stay permit.

The re-entry permit is valid for the duration of your current permission to stay. So you would have to buy a new re-entry permit every year, being it single or multiple.

A re-entry permit will only preserve your current permission to stay, so you would have to obtain a new one for each years extension.

The re-entry permit is valid for the duration of your current permission to stay. So you would have to buy a new re-entry permit every year, being it single or multiple.

Thankyou