Income TaxAug 14, 2025

What is the Personal Allowance for 2024/25 and when does it reduce?

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For the 2024/25 tax year, the Personal Allowance is £12,570. This is the amount of income you can earn before you start paying income tax. It has been frozen at this level since 2021/22 and is expected to remain frozen until at least April 2028.

When does the Personal Allowance reduce?

If your income exceeds £100,000, your Personal Allowance starts to reduce. It decreases by £1 for every £2 of income above the £100,000 threshold. This means:

  • At £100,000 income, your allowance is the full £12,570.
  • At £110,000 income, your allowance is reduced to £7,570.
  • At £125,140 income or above, your Personal Allowance is completely eliminated (reduced to £0).

This creates a hidden 60% marginal tax rate on income between £100,000 and £125,140. For every £100 earned in this range, you lose £50 of Personal Allowance (which was saving you £20 in basic rate tax), plus you pay £40 in higher rate tax. The effective rate is therefore 60%.

Strategies to retain your Personal Allowance include:

  • Making pension contributions to bring your adjusted net income below £100,000
  • Donating to charity through Gift Aid, which also reduces your adjusted net income
  • Using salary sacrifice arrangements offered by your employer

You do not get a Personal Allowance on taxable income above £125,140 at all.

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Disclaimer: This information is for general educational purposes and is not professional tax advice. Tax situations vary. Consult a qualified tax professional for advice specific to your circumstances.