Contents
The reforms
Taxpayer band changes
Methodology notes
UK impacts
Budgetary impact
Distributional impacts
Credit: HM Treasury
The Resolution Foundation on Monday 17th March
Currently, the personal allowance (£12,570) and higher rate threshold (£50,270) are frozen until 2028. The proposed extension would maintain these thresholds at their current levels until 2030, representing a seven-year freeze since they were last uprated in 2021.
Our analysis shows the following changes in taxpayer bands due to the extended freeze:
These shifts would occur primarily in England, Wales and Northern Ireland, as Scotland sets its own income tax thresholds.
We model the proposed extension of the freeze from April 2028 to April 2030 using the fiscal year 2029-30 for our analysis. Our projections account for expected inflation and wage growth, following OBR forecasts.
Using PolicyEngine's open-source model, we estimate both the budgetary and distributional impacts of extending the freeze.
We project that extending the income tax threshold freeze would raise approximately £12.2 billion over the two additional years:
The extension of the freeze would affect taxpayers across the income distribution. Our analysis shows households in the ninth, seventh, and eighth income deciles would experience the largest proportional reductions in net income (-0.66%, -0.58%, and -0.57% respectively).
Higher-income households lose more in monetary terms, while the proportional impact varies across the income distribution. Our analysis shows impacts of -0.66% in the ninth income decile, -0.58% in the seventh decile, and -0.57% in the eighth decile, reflecting the dual effect of freezing both the personal allowance and higher rate threshold.
We estimate that 82% of UK households would be affected by the extension, with the impact concentrated among those in employment. Households primarily relying on benefits rather than earnings would see less impact from the freeze.
The reform would reduce the Gini coefficient by 0.07% and increase poverty rates by 0.17% (from 12.20% to 12.23%).
Working-age singles and couples without children would face larger proportional reductions in income, as these groups more commonly have taxable incomes above the personal allowance.
nikhil woodruff
PolicyEngine's Co-founder and CTO
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