What This Calculator Estimates
UK salaries are subject to Income Tax and National Insurance contributions, both administered by HMRC. This calculator computes your exact Income Tax using the current 2026/27 bands and Personal Allowance (including the taper above £100,000), plus National Insurance, automatically from your gross salary — covering England, Wales, and Northern Ireland. Scotland uses a separate 6-band system not covered here.
How to Use This Calculator
- Enter your annual gross salary in pounds.
- Optionally adjust the pension contribution rate.
- Click Calculate UK Take-Home Pay.
- Review your exact Income Tax, National Insurance, and net pay.
Worked Example
On a £40,000 annual salary: Personal Allowance is the full £12,570 (no taper below £100,000), leaving £27,430 taxable, all within the 20% basic-rate band — Income Tax = £5,486. National Insurance = (£40,000 − £12,570) × 8% = £2,194.40. With a 5% pension contribution (£2,000), net take-home pay is £30,319.60/year (£2,526.63/month).
Official Sources
HMRC — Income Tax rates and Personal Allowances and HMRC — National Insurance.
Related Calculators
Salary to Hourly Calculator · Income Tax Calculator UK · Mortgage Calculator UK
Tips for a More Accurate Estimate
- Pair this with the Income Tax Calculator UK and National Insurance Calculator UK for a precise estimate.
- Double-check your tax code with HMRC, since an incorrect code can significantly affect take-home pay.
- Factor in workplace pension auto-enrolment contributions unless you've opted out.
- Remember your personal allowance may taper off at higher income levels.
- Check for student loan repayment deductions if applicable to your situation.
Frequently Asked Questions
What are the main deductions from a UK salary?
Income Tax (progressive bands via HMRC) and National Insurance contributions are the two main statutory deductions, alongside pension contributions where applicable under auto-enrolment.
Does this calculator compute exact Income Tax automatically?
Yes, for England, Wales, and Northern Ireland. It applies the current 2026/27 bands and your tapered Personal Allowance automatically from your gross salary. Scotland uses separate bands not covered here.
Is National Insurance the same as Income Tax?
No, National Insurance is a separate contribution funding state benefits and pension entitlement, calculated using its own thresholds distinct from Income Tax bands.
What is a tax code and how does it affect take-home pay?
Your tax code, assigned by HMRC, determines how much tax-free personal allowance you receive before Income Tax applies — an incorrect tax code can significantly affect your net pay.
Does auto-enrolment pension reduce my take-home salary?
Yes, most UK employees are automatically enrolled into a workplace pension, with a percentage of salary deducted unless you opt out, which reduces take-home pay but builds retirement savings.
Last updated: May 11, 2026