Copyright Doncaster LMC ©   (Company Reg No 6775496) .  All rights reserved.

Terms & Conditions     Oops, I’ve Spotted a Mistake     Fair Process Notice      Our Policies and Procedures

Carr-Hill Formula

The Carr-Hill formula is the formula that is applied to calculate the Global Sum payments for essential and some additional services.  This allows payments to be made based upon the cost of providing primary care services for a given population and their respective needs.


The formula takes account of the following variables







Each adjustment within the formula generates a separate practice index which allows one to compare the practice score with an adjustment to the national average.  Once all of these indices have been applied, this creates a practice weighting.  



Global sum payments are calculated quarterly.