To take home £21,000 net, you need £24,279 gross
Reverse tax calculation · England & Wales · 2025-26 tax year
Full tax breakdown for £24,279 gross → £21,000 net
| Item | Annual | Monthly | Weekly |
|---|---|---|---|
| Gross salary | £24,279 | £2,023 | £467 |
| Personal Allowance (tax-free) | £12,570 | £1,048 | £242 |
| Income Tax | −£2,342 | −£195 | −£45 |
| National Insurance | −£937 | −£78 | −£18 |
| Net take-home | £21,000 | £1,750 | £404 |
How to earn £21,000 take-home pay in 2025-26
If your goal is a take-home salary of £21,000 per year, your employer needs to put £24,279 on your contract. The difference — £3,279 — goes directly to HMRC as Income Tax (£2,342) and National Insurance (£937).
On a monthly basis, your payslip shows a gross of £2,023 per month, from which £195 Income Tax and £78 NI are deducted, leaving your net £1,750 per month.
The effective combined tax rate at this salary is 13.51% — meaning out of every pound your employer pays, 13.51p goes to HMRC and 86.5p is yours.
Frequently asked questions
What gross salary gives me £21,000 take-home pay?
To take home £21,000 net in 2025-26, you need a gross salary of £24,279. Your employer deducts £2,342 Income Tax and £937 National Insurance, totalling £3,279 — leaving £21,000 in your bank.
How do I calculate gross from net salary?
You cannot reverse UK tax with a simple formula because the deductions are non-linear. The correct method is to use a binary search: find the gross salary that, after applying the 2025-26 tax engine (Personal Allowance £12,570, 20%/40%/45% Income Tax, 8%/2% NI), produces exactly your desired net. For £21,000 net, that gross is £24,279.
Why does gross differ so much from net?
On a gross salary of £24,279, HMRC deducts £3,279 in total — comprising Income Tax (£2,342) and National Insurance (£937). The effective combined rate is 13.51%. Higher earners pay a larger percentage because of the progressive tax system.
What is £21,000 net salary per month?
£21,000 take-home per year equals £1,750 per month (£404 per week). Your gross salary of £24,279 works out as £2,023 per month gross.
Does this include pension contributions or student loan?
No — this calculation uses a standard tax code (1257L) with no pension contributions, no student loan repayments, and no other adjustments. If you have a pension or student loan, your required gross salary will be higher than £24,279. Use the full salary calculator to model those.
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