In my experience rates vary from 30% up to 50%. It would be rather unusual for anyone to actually pay over 50% as to do so would be business suicide!

Senior staff over 10 years experience would be on as much as 45%. It is my suggestion when employing a new physio to give a base rate %. Then to encourage them to maintain a good patient load by adding in a bonus structure that could give them what they want, but only if they achieve their target of monthly treatment sessions.

The danger is that if you pay to much as a base rate the person could earn enough to meet their real needs by only working half as much and therefore not maintaining a list. This affects your business and also makes you feel rather negatively to the staff member for cracking such a great deal in the beginning and then not delivering.

Hope this somewhat different apporach is some assistance from both ends, e.g. if someone wants to pay you less than you want, ask for a bonus based on performance to make up the difference