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🇬🇧United Kingdom

UK Income Tax Calculator

Calculate your UK income tax and National Insurance with 2025/26 HMRC rates.

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Results

Taxable Income£30,180
Income Tax£6,036
National Insurance£2,593
Monthly Take-Home£2,843
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What is UK Income Tax?

The UK Income Tax Calculator estimates your income tax and National Insurance contributions based on HMRC (Her Majesty's Revenue and Customs) tax bands for the 2025/26 tax year.

The UK uses a progressive tax system with three main bands: Basic Rate (20%), Higher Rate (40%), and Additional Rate (45%). Everyone receives a tax-free Personal Allowance of £12,570, which tapers away for incomes above £100,000 and is fully eliminated at £125,140.

National Insurance (NI) is an additional payroll tax that funds the state pension and NHS. Employees pay 8% on earnings between £12,570 and £50,270, and 2% above that. NI is separate from income tax and is calculated weekly, not annually.

The UK tax year runs from April 6 to April 5. Most employees pay tax through PAYE (Pay As You Earn) — your employer deducts tax before paying you. Self-employed individuals file a Self Assessment tax return by January 31.

Key deductions available: pension contributions (reduces taxable income), Gift Aid donations (extends basic rate band), Marriage Allowance (transfer £1,260 to spouse), and Blind Person's Allowance (extra £2,870).

Note: Scotland has its own income tax rates (Starter 19%, Basic 20%, Intermediate 21%, Higher 42%, Advanced 45%, Top 48%) which differ from the rest of the UK. This calculator uses England/Wales/NI rates.

Formula

UK Income Tax Bands 2025/26 (England/Wales/NI):

Personal Allowance: £0 – £12,570 → 0% Basic Rate: £12,571 – £50,270 → 20% Higher Rate: £50,271 – £125,140 → 40% Additional Rate: Over £125,140 → 45%

Personal Allowance taper: Reduced by £1 for every £2 earned above £100,000.

National Insurance (Class 1, Employee): £242 – £967/week → 8% Above £967/week → 2%

Worked Example — £45,000 salary, 5% pension: Pension: £2,250 Personal Allowance: £12,570 Taxable: £45,000 – £2,250 – £12,570 = £30,180 Tax: £30,180 × 20% = £6,036 NI: ~£2,669 Annual take-home: £45,000 – £6,036 – £2,669 – £2,250 = £34,045 Monthly take-home: £2,837

Tax at common salaries: - £30,000 → Tax £3,486, NI £1,685, Take-home £2,069/month - £50,000 → Tax £7,486, NI £3,285, Take-home £3,269/month - £80,000 → Tax £19,432, NI £3,885, Take-home £4,724/month - £100,000 → Tax £27,432, NI £4,285, Take-home £5,690/month

How to use this UK Income Tax Calculator?

1. Enter your Annual Salary (gross pay before any deductions).

2. Pension Contribution: Enter your workplace pension percentage. Auto-enrolment minimum is 5% (3% employer + 2% employee minimum). This reduces your taxable income.

3. Read Results: See your income tax, National Insurance, and monthly take-home pay.

Note: This calculator shows England/Wales/NI rates. Scottish taxpayers have different bands. Student loan repayments (Plan 1: 9% above £24,990, Plan 2: 9% above £27,295) are not included — subtract separately if applicable.

Frequently asked questions

What is the Personal Allowance for 2025/26?
The Personal Allowance is £12,570 — the amount you earn tax-free. It has been frozen at this level since 2021/22. If you earn over £100,000, it tapers by £1 for every £2 above £100,000, reaching zero at £125,140.
What is the 60% tax trap?
Between £100,000 and £125,140, you lose £1 of Personal Allowance for every £2 earned. This creates an effective marginal tax rate of 60% (40% tax + 20% from lost allowance). Strategy: increase pension contributions to keep income below £100,000.
How is National Insurance calculated?
Class 1 NI for employees: 8% on earnings between £12,570 and £50,270 per year, 2% on earnings above £50,270. Employers also pay 13.8% NI on earnings above £9,100 (not deducted from your pay). NI funds your State Pension entitlement.
Are pension contributions tax-free?
Yes, pension contributions reduce your taxable income. A higher-rate taxpayer contributing £10,000 to a pension saves £4,000 in tax. This is one of the most powerful tax-saving tools in the UK. Annual allowance is £60,000 (2025/26).
When is the UK tax return deadline?
Self Assessment paper return: October 31. Online return: January 31 (following the end of the tax year on April 5). Late filing penalty: £100 immediately, then escalating penalties. PAYE employees usually don't need to file unless they have additional income.
What are Scottish income tax rates?
Scotland has six bands for 2025/26: Starter (19%, £12,571-£14,876), Basic (20%, £14,877-£26,561), Intermediate (21%, £26,562-£43,662), Higher (42%, £43,663-£75,000), Advanced (45%, £75,001-£125,140), Top (48%, over £125,140). Scottish taxpayers pay more tax on incomes above ~£28,000.
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