The Barnett formula is a mechanism used by the Treasury in the United Kingdom to automatically adjust the amounts of public expenditure allocated to Northern Ireland, Scotland and Wales to reflect changes in spending levels allocated to public services in England, England and Wales or Great Britain, as appropriate. The formula applies to a large proportion, but not the whole, of the devolved Governments' budgets
The Government still declares its intention to continue to use it as the basis for funding the three devolved governments.