Box sets » Devolved tax and spending forecasts - March 2024

Chart 3.A: Line chart showing Scottish and UK marginal income tax and NICs rates in 2024-25
Income tax was devolved to the Scottish Government in 2016 and policy changes since then have led to a divergence with the UK Government’s income tax system. In this box we explored the costing of the Scottish Government’s December 2023 decision to introduce a new 45 per cent ‘advanced’ rate and to raise the ‘top’ rate to 48 per cent, including the potential behavioural responses.