Required Salary Calculator: What Gross Salary Do You Need? (2026/27)

Who this calculator is for

This tool is for anyone who knows the take-home figure they need and wants to translate it into a gross salary. That includes job hunters working out the offer to hold out for, employees preparing for a pay review, freelancers weighing up a permanent role, people building a household budget around a target monthly income, and anyone relocating who needs to know what salary keeps their standard of living. Instead of guessing gross figures and checking the take-home each time, you start from the number that actually matters - what lands in your account - and work back to the salary that produces it.

Why working backwards from take-home pay is harder than it looks

It is tempting to assume you can simply gross up your target by a fixed percentage - add 30% and call it the salary you need. That does not work, because the UK tax system is progressive: each extra pound you earn can be taxed at a different rate. Below the £12,570 Personal Allowance you pay no Income Tax at all; between roughly £12,570 and £50,270 you lose about 28% to Income Tax and National Insurance combined; above £50,270 the marginal deduction jumps to around 42%; and between £100,000 and £125,140 the withdrawal of the Personal Allowance creates an effective 60% rate on that slice. A single multiplier cannot capture those steps, so the gross needed for, say, £40,000 take-home is not simply £40,000 plus a flat margin.

How the reverse calculation works

Take-home pay always rises as gross salary rises, just not in a straight line. Because of that steady (monotonic) relationship, the calculator can search for the answer reliably: it runs the full forward take-home maths over and over, narrowing the range until it finds the exact gross salary whose net pay matches your target to the nearest pound. For each candidate salary it applies, in order:

• Pension contributions - either relief-at-source or salary sacrifice (salary sacrifice also reduces the pay subject to National Insurance).
• Income Tax - using your region's bands and the Personal Allowance, including the taper above £100,000.
• National Insurance - Class 1 for employees under State Pension age (those over it pay no NI).
• Student loan - your repayment plan, if you have one.

Because it uses the same engine as our forward salary calculator, the two always agree: put the result back into the salary calculator and you will see your target take-home come out.

What the result tells you

You get the gross salary you need - shown per year, per month or per week - plus a full breakdown of where the money goes: Income Tax, National Insurance, any pension and student loan, and the percentage of your gross you keep. Turning on a pension or a student loan plan pushes the required gross up, because more of each pound is deducted before it reaches you. The band table shows exactly how the Income Tax on that salary is built up.

Worked examples (2026/27, England/Wales/NI, no pension or student loan)

These illustrate how the required gross outpaces the take-home target as you move into higher tax bands. Your exact figure from the calculator may differ by a few pounds.

Notice how the gap between gross and take-home widens: keeping 87% of a modest salary is normal, but once you cross £50,270 each extra pound of take-home costs noticeably more in gross pay.

How a pension changes the salary you need

If you pay into a workplace or personal pension, part of your salary is diverted before it reaches you, so you need a higher gross to hit the same take-home. How much higher depends on the type of contribution. With a relief-at-source pension, the contribution reduces your taxable income but not the pay subject to National Insurance. With salary sacrifice, you formally give up part of your salary in exchange for an employer pension contribution, which cuts both your Income Tax and your National Insurance - so the required gross rises by less. Tick the salary-sacrifice box to see the difference for your numbers, and model the trade-off in more depth with the salary sacrifice calculator.

Student loans push the number up too

Student loan repayments are taken as a percentage of income above a plan-specific threshold - typically 9% (6% for postgraduate loans). They are deducted on top of tax and National Insurance, so if you are repaying a loan you will need a higher gross salary to reach the same take-home. Select your plan in the optional student-loan section and the required gross will adjust.

The £100,000 Personal Allowance trap

If your target take-home implies a gross salary near or above £100,000, watch for the Personal Allowance taper. For every £2 you earn over £100,000 you lose £1 of your £12,570 Personal Allowance, which creates an effective 60% tax rate between £100,000 and £125,140. In that zone you have to earn a lot more gross to gain a little more take-home - one reason many high earners use pension contributions to bring their adjusted income back under £100,000.

Scotland is different

Scottish taxpayers have more Income Tax bands - starter, basic, intermediate, higher, advanced and top - and different rates from the rest of the UK. At most income levels this means a Scottish taxpayer needs a slightly higher gross salary to reach the same take-home. Choose Scotland in the region selector to use the Scottish bands. National Insurance is set UK-wide, so only the Income Tax part changes.

Common mistakes when working out the salary you need

• Adding a flat percentage. As shown above, a single multiplier ignores the tax bands and will under- or over-shoot.
• Forgetting the pension. If you want a target take-home and to keep paying into a pension, factor the contribution in - otherwise the real salary you need is higher.
• Ignoring the student loan. Repayments can be £100+ a month and are easy to leave out.
• Confusing gross and net job offers. Advertised salaries are gross; this tool gives you the gross to ask for so the net works.

Using the result to negotiate or budget

Once you know the gross salary behind your target take-home, you have a concrete number to anchor decisions on. In a salary negotiation, ask for the gross figure the calculator gives - recruiters and employers always quote gross, so converting your net goal into a gross ask keeps everyone speaking the same language. For household budgeting, work the other way: start from the monthly take-home your outgoings require, read off the gross, and you instantly know whether a role or a sector pays enough before you apply. If two offers differ in pension or benefits, run each through the calculator so you compare the salaries that genuinely deliver the same money in your pocket.

Things to keep in mind

This is an estimate for the 2026/27 tax year and assumes a standard tax code. It does not include benefits in kind (such as a company car), childcare vouchers, or other deductions specific to your payslip, so treat the result as a close guide rather than a payroll-exact figure. For the forward view, use the salary calculator; to see what a raise really adds, try the pay rise calculator; and to model pension trade-offs, the salary sacrifice calculator.

Who should use this calculator

Works backwards from the take-home pay you need to the gross salary that delivers it. That is the useful direction for anyone with a target — a mortgage payment to cover, a monthly budget to hit, or a self-employed rate to price against an employed salary.

The gap is wider than most people assume, and it widens as income rises. Because tax is progressive, each extra pound of take-home costs more gross than the last, which is why moving from £3,000 to £4,000 net a month requires far more than a third more salary.

What this calculator assumes

• The calculation is reversed from net to gross, solving for the salary that produces your target after deductions.
• Income Tax, National Insurance, pension and student loan are all applied.
• Scottish taxpayers have the target solved against Scotland’s bands.
• Income is assumed even across the year.

Limitations — what it does not cover

• Threshold effects, where the required gross jumps sharply through the £100,000 allowance taper.
• Benefits in kind, which reduce net pay through your tax code.
• Non-tax deductions — season tickets, salary-sacrifice schemes, union fees.
• Variable pay, where a bonus is taxed differently in the month received.
• Self-employment, where the deduction structure differs — see the PAYE vs self-employed comparison.
• The employer’s total cost, which is higher again once employer NI and pension are added.