It is possible to make money as a personal trainer in Bangkok if I get qualified? I am a Brit who is fluent in spoken Thai so I would be willing to train both Thais and English speaking clients.

Before figuring out how much money could be made, How would you address the work permit which would be required ?

Soutpeel is correct I think. Anything a Thai can do we cannot (with exceptions of course) but I really don't think that this would be an exception.

To be honest you cannot get a Work Permit for sure. Those Muay Thai instructors and weight trainers etc. only make about 8000 baht per month anyways unless they own their own gym, dojo etc.

I knew of an American who worked in Chiang Mai at Powerhouse gym. He did get a work permit. I know he got the job while in the US.

This was back in 2006.

I knew of an American who worked in Chiang Mai at Powerhouse gym. He did get a work permit. I know he got the job while in the US.

This was back in 2006.

I dont think this is what the OP had in mind....Believe is talking about becoming a "freelance" personal trainer.

There is nothing in the Thai labour law which prohibits a foregiener from becoming a personnel trainer and being issued a WP.

In the example you have the given it seems the person concerned was recruited oversea's and was employed by a Thai company which would comply with all the requirements ie THB 2.0 mill company, employs 4 X Thai nationals etc, also we dont know what exactly was written on his work permit, I could have a nutrition and health consultant...or some other important sounding job title the Labour office likes to see