How tax on £42,000 is worked out
The first £12,570 is your tax-free Personal Allowance. The rest, £29,430, is taxed in bands:
- £29,430 at 20% = £5,886.00
Total income tax: £5,886.00 a year (£490.50 a month).
National Insurance on £42,000
You pay Class 1 National Insurance on earnings above £12,570:
- £29,430 at 8% = £2,354.40
Total National Insurance: £2,354.40 a year.
£42,000 after tax in Scotland
Scottish taxpayers on £42,000 pay £5,971 income tax and take home £33,675 a year (£2,806 a month). That's £85 a year less than in England, Wales and Northern Ireland. National Insurance is the same everywhere in the UK.
How £42,000 compares
A £1,000 pay rise on £42,000 would add about £60.00 a month to your take-home pay (£720 a year), because 28p of each extra pound goes on tax and National Insurance.
| Salary | Take-home a year | Take-home a month |
|---|---|---|
| £37,000 | £30,160 | £2,513 |
| £41,000 | £33,040 | £2,753 |
| £43,000 | £34,480 | £2,873 |
| £47,000 | £37,360 | £3,113 |
| £52,000 | £40,717 | £3,393 |
These figures use the standard 1257L tax code and 2026/27 rates. Your payslip can differ slightly because payroll works out tax each pay period, and because of benefits in kind, overtime or a different tax code. For your exact situation use the take-home pay calculator, or convert pay with our hourly rate calculator and pro rata salary calculator.
Frequently asked questions
How much is £42,000 a month after tax?
On a £42,000 salary you take home about £2,813.30 a month in 2026/27 if you live in England, Wales or Northern Ireland, after income tax and National Insurance and before any pension or student loan deductions.
What tax band is a £42,000 salary?
A £42,000 salary is basic rate in England, Wales and Northern Ireland. You pay £5,886 income tax a year, an effective rate of 14.0% of your gross pay.
How much is £42,000 a year per hour?
Based on a 37.5-hour week, £42,000 a year works out at £21.54 an hour before tax. After tax and National Insurance it's about £17.31 an hour.
How much is £42,000 after tax in Scotland?
In Scotland you take home £33,675 a year (£2,806 a month), which is £85 less than in the rest of the UK because Scotland has different income tax bands.
← £41,000 after tax£43,000 after tax →
Last reviewed October 2026. Figures are estimates for guidance only.