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£42,000 After Tax UK (2026-27)
A £42,000 salary works out to £21.54/hour before tax (37.5-hour week). With the standard tax code, your personal allowance is £12,570, leaving £29,430 of taxable income. Deductions in 2026-27 are £5,886 income tax and £2,354 employee National Insurance (8% between £12,570 and £50,270, then 2%), leaving £33,760 in your pocket.
| Item | Annual | Monthly |
|---|---|---|
| Gross salary | £42,000 | £3,500 |
| Personal allowance | £12,570 | — |
| Taxable income | £29,430 | — |
| Income tax | −£5,886 | −£491 |
| National Insurance | −£2,354 | −£196 |
| Take-home pay | £33,760 | £2,813 |
These figures assume no pension contributions or student loan. A Plan 2 student loan would repay another £1,135 per year (9% above £29,385), and Scotland uses different income tax bands. The UK Income Tax Calculator covers pensions, all student loan plans, and Scottish rates.
What happens to the next pound at £42,000
The next pound earned at £42,000 sits in the basic-rate band: it loses 20% to income tax and 8% to National Insurance, so a £1,000 pay rise keeps about £720. Marginal is not average: the 19.6% effective rate in the headline box blends this top slice with the personal allowance and any lower bands underneath, which is why the two numbers differ.
Stepping up from £40,000 to £42,000 added £1,440 of annual take-home out of a £2,000 gross rise. The next step, to £45,000, would keep about £2,160 of the £3,000 increase. Crossing a band boundary never re-taxes the income below it — only the new slice pays the higher rate.
Frequently asked questions
How much is £42,000 after tax in the UK?
In the 2026-27 tax year, a £42,000 salary in England, Wales, or Northern Ireland leaves £33,760 per year after £5,886 income tax and £2,354 employee National Insurance — about £2,813 per month or £649 per week, an effective deduction rate of 19.6%.
What is £42,000 per month after tax?
£42,000 a year works out to about £2,813 per month after tax and National Insurance in 2026-27, assuming a standard tax code with no pension or student loan deductions.
What is £42,000 per hour?
£42,000 a year is £21.54 per hour before tax, based on a 37.5-hour week (1,950 working hours per year).
What tax band is £42,000 in?
At £42,000, the next pound earned falls in the basic-rate band: the marginal deduction is 20% income tax plus 8% National Insurance, so a £1,000 pay rise keeps about £720. Bands apply per slice of income, so income below the band boundaries keeps its lower rates.
How much of a pay rise do I keep at £42,000?
Moving from £42,000 to £45,000 adds about £2,160 of annual take-home out of the £3,000 gross increase. Only the new pounds are taxed at the marginal rate — a rise never reduces the take-home on income you already earn, though salary-sacrifice pension contributions can be unusually valuable where the marginal rate is high.
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Estimates for the 2026-27 tax year using England, Wales & Northern Ireland rates, the standard personal allowance (tapered above £100,000), and employee Class 1 National Insurance. Actual pay varies with your tax code, pension, and benefits. Not tax advice.