What do I need for my Reentry Permit to return to Thailand after getting my 1-year visa extension?

After obtaining a reentry permit alongside your 1-year visa extension, you should expect a stamp in your passport confirming the reentry permit. This stamp serves as your documentation for reentering Thailand. You've received a receipt for the permit fee, but the actual reentry permit is stamped and included in your passport. When you return to Thailand, the immigration officer will mark that the permit has been used.