Is
@gotlost saying, even if you have all the correct paperwork prepared, and meet all the conditions for an extension, i.e., financial, you still have to pay 5,000 or 10,000 baht to get the extension to stay in Thailand stamp in your passport, depending on which Immigration office you use? If that is what he is saying, that is blatant corruption and should be reported to a higher authority. If that was tried on me, I would say I had no money and would return at a later date. The next time around I would go armed with a hidden recording device to capture the demand on tape (so to speak). I am not due to renew my extension until the end of the year, although it is within the regulations to do so up to 45 days beforehand.