UK Income Tax & National Insurance Calculator
Calculate UK income tax and National Insurance contributions for 2024/25 tax year.
Calculation Inputs
Calculation Results
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Enter inputs on the left and click Calculate to view results.
Formula & Methodology
Personal Allowance: £12,570 (reduced for income >£100k); Bands: 20%/40%/45%
UK income tax uses progressive bands. High earners lose £1 of PA for every £2 over £100k. Scotland has separate rates.
Frequently Asked Questions
What is the UK personal allowance?
£12,570 in 2024/25 for most people. Reduces by £1 for every £2 of income over £100,000, fully gone at £125,140.