Calculate Your United Kingdom Tax

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Personal Allowance is reduced by £1 for every £2 of income above £100,000, creating an effective 60% marginal rate between £100,000 and £125,140.

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Frequently Asked Questions

What are the UK income tax bands for 2025/26?
The UK has four tax bands: Personal Allowance (0% on first £12,570), Basic Rate (20% on £12,571–£50,270), Higher Rate (40% on £50,271–£125,140), and Additional Rate (45% above £125,140).
What happens to my Personal Allowance above £100K?
Your Personal Allowance is reduced by £1 for every £2 you earn above £100,000. This means if you earn over £125,140, you have no Personal Allowance at all, creating an effective 60% marginal rate between £100K and £125,140.
How does National Insurance work?
Employees pay Class 1 National Insurance at 8% on earnings between £12,570 and £50,270, and 2% on earnings above £50,270. Self-employed pay Class 4 NI at different rates.
Does this calculator include Scottish income tax?
No. Scotland has its own income tax rates which differ from the rest of the UK. This calculator uses the rates for England, Wales, and Northern Ireland.
What is the highest marginal tax rate in the UK?
The highest combined marginal rate is 47% (45% additional rate + 2% NI). However, between £100K and £125,140, the effective marginal rate reaches 60% due to the Personal Allowance taper.
How can I reduce my UK tax bill?
Pension contributions reduce your taxable income. ISAs provide tax-free investment returns. You can also claim tax relief on charitable donations via Gift Aid. Consider speaking to a financial advisor about salary sacrifice and other strategies.
This calculator provides estimates based on 2025/26 tax rates for United Kingdom. It does not account for all deductions, credits, or your specific filing status. Consult a qualified tax professional before making financial decisions. PayTaxFast is not a law firm, tax advisor, or financial advisor.

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