Working backwards from take-home pay
Most salary calculators go one way: salary in, take-home out. But when you’re budgeting for a new home, negotiating a job offer or deciding whether you can afford to go part-time, the question is usually the reverse. How much do I need to earn to take home £X?
The UK system makes that awkward to work out by hand. Income Tax is cumulative and banded, National Insurance is charged per pay period, student loans are rounded down to the pound each payday, and the Personal Allowance tapers away above £100,000. This calculator doesn’t use a rough gross-up formula. It runs our full, tested take-home engine on candidate salaries and finds the smallest whole-pound salary whose take-home meets your target. Every setting you choose (Scotland, student loans, pension, tax code) is included.
Salary needed for common take-home amounts (2026/27)
| Take-home per month | Salary needed | With Plan 2 loan | With 5% pension |
|---|---|---|---|
| £1,500 | £20,111 | £20,111 | £21,294 |
| £2,000 | £28,445 | £28,445 | £30,118 |
| £2,500 | £36,778 | £37,828 | £38,942 |
| £3,000 | £45,111 | £47,345 | £47,765 |
| £4,000 | £64,556 | £71,011 | £68,077 |
| £5,000 | £85,245 | £95,487 | £89,895 |
England, Wales and Northern Ireland, standard 1257L tax code, paid monthly. Choose Scotland in the calculator to use Scottish bands.
Why the gap grows as you earn more
The difference between gross and net isn’t a fixed percentage. It depends on which band your top slice of pay falls in:
- Up to £50,270, each extra £1 of salary gives you 72p (20% tax + 8% NI).
- £50,270 to £100,000, you keep 58p (40% tax + 2% NI).
- £100,000 to £125,140, you keep 38p, because the Personal Allowance is withdrawn.
- A student loan takes another 9p (6p for a Postgraduate loan).
The result panel shows how much extra salary you’d need for £100 more a month at your level. It’s a quick way to see what a raise is really worth before you ask for one.
Using the result
Budgeting for a mortgage or rent. Start from the monthly amount you need to cover housing, bills and savings, find the salary here, then check what that salary could borrow in the mortgage affordability calculator.
Negotiating a job offer. Treat the result as your floor, not your ask. Compare the total package with the job offer comparison, which includes employer pension, bonus and commuting costs.
Going part-time. Find the take-home you need, then use the pro-rata salary calculator to see which hours on your current salary would get you there.
Self-employed? This calculator assumes PAYE employment. Freelancers pay Class 4 NI and settle tax through Self Assessment. Use the self-employed tax calculator instead.
Things to check
- Your tax code. If HMRC has adjusted it, for example for benefits or underpaid tax, enter it under Pension, tax code & deductions.
- Pension. Workplace pensions are taken from your pay. Relief at source deducts 80% of the contribution after tax. Salary sacrifice reduces gross pay and saves NI too.
- Deductions after tax, such as union fees or a season-ticket loan, mean you need a bit more salary. Add them so the target is realistic.
The salary is rounded to the whole pound, so your take-home may come out a few pence above the target. Payslips in the first months of a job can differ while cumulative tax catches up.
Frequently asked questions
What salary do I need to take home £2,500 a month?
£36,778 a year in England, Wales or Northern Ireland for 2026/27, with no pension or student loan. With a Plan 2 student loan it's £37,828.
What salary gives £2,000 a month after tax?
About £28,445 a year in 2026/27 with a standard 1257L tax code, no pension and no student loan.
How is the required salary worked out?
There's no simple formula, because tax, NI and student loans each apply at different thresholds and are rounded differently. We run the full take-home calculation on candidate salaries and find the smallest whole-pound salary whose take-home reaches your target.
Why does each extra £100 of take-home need so much more salary?
Because extra pay is taxed at your marginal rate. A basic-rate taxpayer keeps 72p of each extra £1, so £100 more take-home needs about £139 more gross a month. Above £50,270 you keep 58p, and between £100,000 and £125,140 just 38p.
Should I ask for this figure in a job negotiation?
It's a good floor. Remember to compare the whole package — employer pension, bonus, benefits and commuting costs — which the job offer comparison does side by side.
Does this work for Scottish taxpayers?
Yes. Choose Scotland and the calculator uses the six Scottish bands. You usually need slightly more salary above about £30,000 to take home the same amount.
Can I include a bonus?
The required salary is your regular annual pay. For bonuses, check the effect in the take-home pay calculator, which shows your bonus month separately.
Sources
Results are estimates for education and planning, not financial advice. They depend on the figures you enter and the assumptions shown above.