How long is an STV valid for after issue if not used immediately?

I'm shutting this down:

1. The OP is British, but living in Singapore, and is over 50, and had Non-OA visas before, and is leaving Singapore to work remotely in a foreign country.

2. The best strategy for him would be to return to Thailand on a 45 day visa exempt, and then purchase a Non-O visa based on being over 50 inside Thailand. He can then get a one year extension of stay based on being over 50 inside Thailand.

3. The OP can not get a Non-OA visa; those visas can only be issued in the country of his passport (in this case, the UK).

4a. The OP *MAY* be able to get an STV, however the STV program was badly thought out, requires extensive documents and paperwork, and he has other strategies that are better.

4b. To get an STV (and the extension of stay), you'll need a pre-booked hotel, the tax ID number, insurance lasting through the expected length of stay. It's also not known what will happen to the STV after you enter on July 3rd.

Thanks one and all. If anyone has anything else to add that helps the OP, please send a mod a message and we'll reopen commenting.

STV cannot convert to any other type of visa.

If you are on board for three months before entering Thailand, your choices would be limited. Depends on your nationality, entering Thailand on visa-exempt would be easiest. It could be much easier for you to convert to some type of visa if you are eligible.

1. The STV is valid for 90 days.

2. *DO NOT* get the STV, especially if you aren't planning on using it. The last day you can get an extension on it is July 3rd.

PLEASE (PLEASE!) think about getting another visa.