Global sum

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The GMS global sum formula (the Carr-Hill formula) distributes the core funding (global sum) to general practices for essential and some additional services. 

Payments are made according to the needs of a practice's patients and the cost of providing primary care services.  The formula takes into account issues such as age and deprivation.

  • The formula for calculating global sum is included in the statement of financial entitlement. 
  • Access further information on 16-17 contract changes. 
  • The 16-17 global sum figure is £80.59.

Payments are made to practices according to the needs of their patients and the costs of providing primary care services, and are calculated using the Carr-Hill formula. These services are defined as “essential” and “additional” services in the contract and are listed below. Practices are required to provide these essential services: 

  • management of patients who are ill or believe themselves to be ill with conditions from which recovery is generally expected
  • general management of patients who are terminally ill
  • management of chronic disease.

Practices have a preferential right to provide additional services, and normally do. The services cover:

  • cervical screening
  • contraceptive services
  • vaccinations & immunisations
  • child health surveillance
  • maternity services
  • minor surgery services.

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