Gross to net salary in the United Kingdom
In the United Kingdom, your net (take-home) pay is your gross salary minus two things: social security contributions and income tax. Employee social contributions are roughly 8% of gross, and progressive income tax is deducted on top. Because tax rises with income, take-home commonly lands somewhere between about 60% and 80% of gross, depending on how much you earn. Figures as of 2026.
In the United Kingdom, your gross salary becomes net pay ("take-home pay") once your employer deducts income tax and National Insurance (NI, about 8% on the main band) through the PAYE system before you are paid. Distinctively, a British payslip usually shows several more lines beyond tax and NI: workplace pension contributions under auto-enrolment and, where applicable, student-loan repayments all come off the same slip. Your net therefore depends on your tax code and personal situation.
PAYE gets it right during the year, or tries to
Unlike most European systems, UK payroll aims to deduct exactly the right tax by the end of the year rather than a rough amount to be trued up later. It does this cumulatively: each payslip recalculates the tax due on everything earned so far and deducts the difference. That is why a bonus month can look punitive and the following month unusually light — the system is correcting itself, not the employer.
The mechanism depends entirely on the tax code being right. A wrong code — a stale benefit, an old second job, an untaken allowance — produces a wrong deduction every month until it is changed, and it is the employee who must notice. The code is on every payslip precisely so it can be checked.
National Insurance, and the two thresholds that shape a payslip
National Insurance is not income tax and does not follow the same thresholds. It starts above a primary threshold, runs at a main rate, and then drops to a much lower rate above an upper earnings limit — so unlike income tax, the NI rate falls as pay rises past a point. The combined marginal rate therefore does not rise smoothly, and the two taxes peak in different places.
It is also assessed per pay period rather than cumulatively, which matters for irregular pay: two months of £3,000 and one of £9,000 do not attract the same NI as three of £5,000. That is the opposite of how income tax behaves on the same payslip, and it is the usual explanation when a bonus month's deductions look inconsistent with the tax alone.
FAQ
- What is National Insurance and roughly how much is it?
- National Insurance (NI) is a mandatory contribution deducted from wages alongside income tax through PAYE. It helps fund the state pension and certain benefits. For employees, the main Class 1 rate is about 8% on earnings within the main band as of 2026, with a lower rate applying above the upper threshold. It appears as a separate line on your payslip, distinct from the income tax that PAYE withholds on top.
- What other deductions appear on a UK payslip besides income tax and NI?
- Beyond income tax and National Insurance, a UK payslip commonly shows two further deductions. Under pension auto-enrolment, eligible workers are placed into a workplace pension and a share of pay is contributed automatically unless they opt out. Where you have an eligible student loan, repayments are also collected through payroll once your earnings pass the relevant threshold. Both come off the same slip, which is why net pay can be noticeably below the after-tax figure.
Important
This is a general overview, not financial advice. Take-home pay in the United Kingdom depends on your income, tax bracket, family situation, region and any ceilings on contributions, so a real payslip will differ. Figures are a reference as of 2026 and change yearly — use the calculator for an estimate and confirm with the official source.