I agree with the others. If you’re an employee of the gym and they’re supplying you clients, then you can expect to be sharing that fee with the house – 40-50%. But if you’re an outside trainer bringing in your own clients, that’s a different story – it should be a good bit less. I know of a few gyms in my area that charge trainers a flat monthly fee to train clients (as long as they’re members) – I would look for that type of deal if you had enough clients. Good luck Clarke.