Income Tax Calculator 2025/26

Understanding UK Income Tax 2025/26

Income tax in the UK is charged on your earnings at different rates depending on how much you earn. Your first chunk of income is tax-free (the Personal Allowance), and then income is taxed at graduated rates as you earn more. National Insurance is a separate tax on earnings that funds the NHS and state benefits. This calculator shows you exactly how much income tax and NI you'll pay on your salary, accounting for pension contributions, student loans, and special allowances.

UK Tax Bands 2025/26

Personal Allowance: The first £12,570 of income is tax-free. This allowance is reduced for high earners: if you earn above £125,140, your allowance is reduced by £1 for every £2 earned above that threshold.

Basic Rate (20%): Income from £12,570 to £50,270 is taxed at 20%. Most taxpayers fall into this band.

Higher Rate (40%): Income from £50,270 to £125,140 is taxed at 40%. You only pay this rate on income above the basic rate threshold.

Additional Rate (45%): Income above £125,140 is taxed at 45%. This applies to high earners.

National Insurance Contributions 2025/26

Employee NI: On earnings between £12,570 and £50,270, you pay 8%. Above £50,270, you pay 2%. NI funds the NHS, state pension, and social security benefits.

Employer NI: Your employer also pays 13.8% on your earnings above £9,100/year. This is a cost to them, not deducted from your pay, but it affects hiring decisions and your total employment cost.

Pension Contributions

Contributions to your workplace or personal pension are deducted before income tax is calculated. This means if you contribute 5% of your salary to a pension, that 5% is not subject to income tax or NI, saving you roughly 32% (20% income tax + 12% NI combined). This is a significant tax advantage—always contribute what your employer will match.

Student Loan Repayments

Plan 1: Applies to loans taken before September 2012. You repay 9% of earnings above £22,015/year. These loans are wiped 25 years after graduation.

Plan 2: Applies to loans from 2012 onwards. You repay 9% of earnings above £27,295/year. These loans are wiped 30 years after graduation.

Plan 4 (Scotland): Scottish loans only. You repay 9% of earnings above £27,660/year. Repayment terms are similar to Plan 2.

Postgraduate Loan: You repay 6% of earnings above £21,000/year.

How to Use This Calculator

1. Enter your annual gross salary (before tax and NI).
2. Enter your pension contribution percentage (if you make any). This is typically 4-8%.
3. Select your student loan plan, or "No Student Loan" if you don't have one.
4. Tick the boxes for Blind Person's Allowance (if eligible) or Marriage Allowance (if receiving).
5. Click "Calculate Tax" to see your income tax, NI, and take-home pay.
6. Review the summary table to understand how your salary breaks down.

Common Tax Scenarios

Scenario 1: £25,000 salary, 5% pension contribution, Plan 2 student loan: Your pension contribution saves you roughly £200/year in tax. Your student loan repayment kicks in (9% of earnings above £27,295 = £0 currently). Your take-home pay is approximately £20,350.

Scenario 2: £50,000 salary, basic rate taxpayer: You cross into the 40% higher rate band on income above £50,270 (barely). Your income tax is approximately £7,400. NI is approximately £3,010. Take-home is around £39,600 before pension and loans.

Scenario 3: £125,000+ salary: Your personal allowance is reduced. You pay 40% on a large portion of your income, plus 45% on earnings above £125,140. Higher earners benefit most from pension contributions, which reduce your taxable income and may keep you below thresholds for losing allowances.

Ways to Reduce Your Income Tax

• Maximize Pension Contributions: Every £1 contributed to a pension saves £0.32 in tax and NI. Contribute as much as your employer will match.
• Claim Your Personal Allowance: Ensure you claim your full Personal Allowance—if you're a non-resident with UK income, you may not automatically get it.
• Marriage Allowance: If your partner earns less than the Personal Allowance threshold, they can transfer their unused allowance to you, saving up to £252/year.
• ISA Savings: Interest in ISAs is tax-free. The annual allowance is £20,000 (Cash ISA or Stocks & Shares).
• Dividend Allowance: Limited company directors get £1,000 of tax-free dividends. Plan dividends carefully to minimize tax.
• Gift Aid: Donations to charities provide tax relief equal to the basic rate of tax (20%).

Financial Disclaimer: This calculator provides estimates only and does not constitute financial advice. Tax allowances and rates change annually. Always seek independent financial advice or consult HMRC before making tax decisions.