UK Income Tax Calculator (Estimate)
Use this calculator to estimate your annual UK income tax based on your earnings, UK nation, and pension salary sacrifice amount.
Note: This tool estimates income tax only. It does not include National Insurance, student loan, dividend tax, or tax credits.
How this United Kingdom income tax calculator works
This page gives you a practical estimate of UK income tax using current personal allowance rules and tax bands. It is useful for salary planning, comparing job offers, and understanding how pension salary sacrifice affects your tax bill.
The calculator uses these core steps:
- Add salary and other taxable income.
- Subtract pension salary sacrifice before tax.
- Calculate your personal allowance (including tapering above £100,000 adjusted net income).
- Apply the correct tax bands for either:
- England/Wales/Northern Ireland, or
- Scotland.
UK income tax bands (quick guide)
England, Wales, and Northern Ireland
| Band | Taxable income (after allowance) | Rate |
|---|---|---|
| Basic rate | Up to £37,700 | 20% |
| Higher rate | £37,701 to £125,140 threshold range | 40% |
| Additional rate | Over £125,140 threshold range | 45% |
Scotland
| Band | Taxable income (after allowance) | Rate |
|---|---|---|
| Starter | First £2,306 | 19% |
| Basic | Next £11,685 | 20% |
| Intermediate | Next £17,101 | 21% |
| Higher | Next £31,338 | 42% |
| Advanced | Next £62,710 | 45% |
| Top | Over that amount | 48% |
Personal allowance and the £100,000 taper
For most people, the standard personal allowance is £12,570. However, once adjusted net income is above £100,000, your allowance reduces by £1 for every £2 over the limit. At £125,140, the allowance is fully removed.
What this calculator includes and excludes
Included
- Income tax estimate by UK nation tax bands.
- Personal allowance and tapering logic.
- Pension salary sacrifice impact (simple model).
- Band-by-band tax breakdown.
Not included
- National Insurance contributions.
- Student loan repayments.
- Dividend tax and savings allowance effects.
- Marriage allowance transfers, blind person allowance, and other specialist reliefs.
- Tax code adjustments and HMRC underpayment/overpayment corrections.
Tips to reduce your UK tax bill legally
1) Use pension contributions strategically
Salary sacrifice can lower taxable income and potentially recover personal allowance if your earnings are above £100,000. This can significantly improve tax efficiency.
2) Check your tax code
An incorrect tax code can cause overpayment across the year. Review your HMRC account or payslip code regularly.
3) Consider ISA usage
ISAs do not reduce income tax today, but they can reduce future tax drag by shielding investment returns from tax.
4) Keep clean records for side income
If you have freelance or rental income, accurate records make self-assessment easier and help ensure only the correct amount of tax is paid.
Frequently asked questions
Is this the same as HMRC's official calculator?
No. This is an independent estimate designed for quick planning. For official liabilities, use HMRC guidance and self-assessment tools.
Does this calculate take-home pay?
It shows net income after estimated income tax only. True payslip take-home pay is usually lower after National Insurance and any deductions.
Why is Scotland different?
Scotland sets its own non-savings, non-dividend income tax bands and rates. That is why selecting your tax nation is important.
Final reminder
This UK income tax calculator is for education and planning, not personal tax advice. If your situation includes dividends, capital gains, trusts, overseas income, or multiple reliefs, consider speaking with a qualified accountant or tax adviser.