Take home pay after tax is the amount that reaches your bank account once income tax, National Insurance and other payslip deductions have been taken from your gross salary. Anyone comparing job offers, planning a budget or checking a payslip needs this figure, because the headline salary is never what you spend.
How take home pay after tax is calculated
Your employer starts with gross pay for the period. Income tax is then worked out on the part of your income above your personal allowance, using the bands and the tax code HMRC has given your employer. National Insurance is calculated separately, on earnings above a set point each pay period.
What is left is your take home pay after tax and every other deduction. A simple way to think about it is gross pay minus tax, minus National Insurance, minus pension, loan and scheme deductions. Pension, student loan, cycle to work and payroll giving all come off too.
- Income tax follows your tax code and the band each slice of pay falls into
- National Insurance runs on its own thresholds, not the tax ones
- Pension and student loan deductions depend on your own arrangements
What to enter for a sensible estimate
Use your annual gross salary, how often you are paid, and your tax code if you know it. A typical code is shown on your payslip or in your personal tax account. If your pension is taken before tax, enter the percentage so the estimate reflects the lower taxable pay.
Include a student loan plan only if you have one, and note whether you live in Scotland, because Scottish income tax uses different bands from the rest of the UK. Bonuses and overtime are easier to handle as separate one-off amounts.
Worked example with round numbers
Suppose, purely as an example, a person earns £30,000 a year and the assumed combined effective deduction for tax and National Insurance is 20 per cent. That assumption is not a real rate. Deductions would be £6,000, leaving £24,000 a year, or £2,000 a month.
Real payslips will differ because tax is charged in slices rather than as one flat percentage, so treat the example as a way to see the arithmetic only.
Common mistakes and what the calculator cannot do
The most frequent error is using the wrong tax code or forgetting a second job, which often has a code that taxes every pound. People also overlook that pension and benefit-in-kind deductions change the final figure.
A web calculator gives an estimate. It cannot see your exact code, any underpaid tax being collected, or employer-specific deductions. For the current rates, allowance and thresholds, check GOV.UK or HMRC, and speak to a qualified adviser for unusual situations.
How to estimate your pay in five steps
- Find your gross annual salary in your contract or offer letter.
- Choose how often you are paid: monthly, four-weekly, weekly.
- Enter your tax code from a recent payslip, or leave the default.
- Add pension percentage and any student loan plan.
- Read the monthly and weekly net figures and compare them with your payslip.
Run the numbers in the calculator
The calculator below works out your figures in your browser. It is free, with no sign-up and no watermark.
Questions about net pay
Why is my payslip lower than the calculator result?
Common reasons are a different tax code, extra deductions such as a benefit in kind, or tax being collected for an earlier year. Compare each line on the payslip with the inputs you used.
Does take home pay include my employer pension contribution?
No. The employer's contribution goes into your pension and never appears in your net pay. Only your own contribution is deducted from the payslip.
Is bonus pay taxed at a higher rate?
A bonus is added to your pay for that period and taxed through your normal code, so it may push part of your income into a higher band. The bonus is not taxed at a special rate.
What this guide and the calculator cannot do
Results are estimates based on the numbers you enter and the published rules. They are not tax, legal or financial advice. Rates, limits and deadlines change, so check the current figures with the official authority, and speak to a professional if your situation is complicated.
Published: 4 November 2026