Scotland’s Top Rate Tax Hike May Have Led to Lower Receipts
Scotland’s decision to increase its top rate of income tax to 48 percent may have backfired during the 2024-25 fiscal year, according to tax data analysis published by lawyer Dan Neidle. HM Revenue and Customs figures indicate that the Scottish government collected £22m less than anticipated after high earners adjusted their financial behaviors to avoid the higher levy.
Understanding the Laffer Curve Impact in Scotland
The analysis points to economic principles outlined by economist Arthur Laffer. The Laffer curve, modelled by the economist Arthur Laffer, suggests that there is limit to how far taxes can be raised before receipts begin to fall due to the impacts on growth or the richest leaving the country. Over the past eight years, Scotland progressively raised its top income tax rate above the rest of the UK baseline of 45 percent on earnings exceeding £125,140.
Tax Policy Associates, the research body, examined average tax liabilities among top-rate payers in Scotland compared to the broader UK. The group also analyzed the proportion of income taxpayers utilizing self-assessment. Both metrics revealed a notable drop in the share of tax revenue generated north of the border.
High-earning individuals bypassed the top-tier bracket by shifting income streams. Many taxpayers chose to pay themselves through dividends or diverted earnings into pension contributions rather than face the 48 percent rate.
Conservative Estimates and Future Fiscal Risk
Neidle calculated that if incomes in Scotland grew at parity with the rest of the UK, the policy choice resulted in a direct shortfall of around £22m. He described this figure as a “conservative estimate”, noting that total losses could climb to around £30m. By comparison, Neidle estimated that a 1p rise in the top rate could have raised £53m if behavioral shifts had not occurred.
At the same time, tax experts acknowledge potential anomalies within year-to-year data. Broader economic shifts and non-tax variables can trigger fluctuations in high-earner demographics, adding elements of uncertainty to annual calculations.
UK politicians facing pressure to fund large public spending packages are weighing similar tax hikes on wealthy populations. Plans floated by political figures like Andy Burnham—who previously weighed a 50 percent top tax rate before aligning with national manifesto commitments—face renewed scrutiny in light of the Scottish data.
The Scottish Government Response
Defending the tax structure, a spokesperson for the Scottish government pointed to broader economic indicators. Officials stated that Scotland remains a top destination for foreign direct investment outside London, maintaining strong performance over an eleven-year period.
Furthermore, government figures show that overall taxpayer numbers and liabilities grew during the 2024-25 period. The administration argues that top-rate taxpayers grew faster in Scotland than in the rest of the UK.
Supporters of the progressive tax model maintain that higher contributions from top earners fund public benefits absent in the rest of the UK. These programs include free university tuition, free prescriptions, and the Scottish Child Payment.