Comparability percentages used for Barnett formula, 2025 Spending Review

Source: Institute for Government analysis of HM Treasury, 'Statement of Funding Policy: Funding the Scottish Government, Welsh Government and Northern Ireland Executive', June 2025.Notes: At spending reviews, the departmental comparability percentages shown above are used. At fiscal events, the Barnett formula is applied at the programme level, with programme comparability factors set to either 0% or 100%.Get the data Download image
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