UK Net to Gross Salary Calculator

The most common reason is salary negotiation: you know you need a certain amount landing in your bank account each month to cover your budget, and you want to know what headline salary to ask for. It also comes up when comparing job offers quoted differently (one as a day rate, one as an annual salary), when freelancers or contractors are setting a target day rate, and when budgeting backwards from a target lifestyle to figure out what salary supports it.

Because UK Income Tax and National Insurance are progressive: the rate you pay increases in bands as your income rises (20% then 40% then 45% for tax, 8% then 2% for NI), and the tax-free Personal Allowance itself shrinks above £100,000. A single flat percentage only works at one specific income level. Above roughly £45,000 gross, using a flat 25% estimate will undershoot your true tax by a meaningful margin, and above £100,000 the Personal Allowance taper makes a flat estimate even less accurate. That is why this calculator solves iteratively against the real bands rather than applying one rate.

It works backwards using a search method called bisection. It repeatedly tests a candidate gross salary, runs it through the same tax and National Insurance calculation as our forward take-home calculator, and checks whether the resulting net pay matches your target. If the test net pay is too low, it tries a higher gross; if too high, it tries a lower gross. Each attempt narrows the range in half, and after a few dozen attempts it converges on the gross salary that produces your target take-home to the nearest pound.

If your pension is deducted via salary sacrifice or a net pay arrangement, it reduces the amount of your salary that is subject to Income Tax and National Insurance before you receive your take-home pay. That means to hit the same take-home target, you need to ask for a higher gross salary than someone contributing nothing, because part of that higher gross is being diverted into the pension before tax is calculated. The calculator factors your pension percentage directly into the solve, so the gross figure already accounts for it.

It varies by income level because of the banded system. At a gross salary around £45,000, the combined Income Tax and National Insurance take is typically in the low-to-mid 20% range. By £100,000 it rises well above 30% once you are paying 40% tax on the top slice plus 2% NI, and the effective rate climbs further as the Personal Allowance tapers away between £100,000 and £125,140. The summary table below the calculator shows the exact tax and NI amounts for your specific gross figure, not just a rough percentage.

It works for the tax and NI portion of a PAYE salary. If you are quoting a day rate as a contractor operating outside IR35 through PAYE (for example, via an umbrella company), you can multiply your target day rate by your expected working days per year to get an annual net target, then use this calculator to see the gross day rate equivalent. If you are working through your own limited company inside or outside IR35, your actual take-home also depends on dividends, corporation tax, and the Employment Allowance, which this calculator does not model; our IR35 calculator handles that scenario specifically.

First, a headline gross figure quoted by an employer sometimes bundles in the value of benefits in kind (private healthcare, a car allowance, extra pension contributions above the statutory minimum), which do not land in your bank account as cash, so the effective take-home is lower than a pure salary comparison suggests. Second, bonus timing matters: a large annual bonus paid in one month can push that month's PAYE tax withholding up substantially even though your annual tax liability is unaffected, so do not assume a bonus month's payslip reflects your ongoing net pay. Third, if you have a student loan, that repayment is calculated on top of the figures shown here and will reduce your actual take-home further; use our student loan calculator alongside this one if that applies to you.

No. This calculator uses the Income Tax and National Insurance rules that apply in England, Wales, and Northern Ireland. Scotland has its own Income Tax bands set by the Scottish Parliament, with more bands and different thresholds. If you are negotiating a salary for a role based in Scotland, use our dedicated Scottish take-home calculator to check the forward gross-to-net figures at your target salary level instead.

Yes. If your current take-home no longer covers your outgoings by a known amount, add that shortfall to your current net pay (annual, monthly, or weekly, whichever you prefer) and enter the new total as your target. The calculator will show the new gross salary you would need, which is a useful, concrete number to bring into a pay review conversation rather than asking for a vague percentage increase.

The solve is accurate to well within a pound at any income level the calculator supports, because it is testing against the exact same Income Tax and National Insurance rules as the forward calculator rather than an approximation. At very low incomes, below the Personal Allowance and NI Primary Threshold of £12,570, gross and net are close to equal since no tax or NI is due. At very high incomes above £125,140, the Personal Allowance has fully tapered away and the 45% additional rate applies to all further income, which the solver handles correctly, just as it does for every other band.