£42,000 self-employed after tax
With £42,000 of profit you pay £7,652 in tax and National Insurance and keep £2,862 a month.
- You keep
- £34,348 a year
- A month
- £2,862
- Set aside for tax
- £638 a month
- Effective rate
- 18.2%
- HMRC 2026/27 rates
- Private: nothing leaves your device
- Free, no sign-up
On £42,000 of self-employed profit you pay £5,886.00 income tax and £1,765.80 Class 4 National Insurance. You keep £34,348.20, which is £2,862.35 a month.
How the £7,652 bill is worked out
- The first £12,570 is tax free.
- £29,430 at the basic rate of 20%: £5,886.00.
- Class 4 National Insurance: 6% of profit between £12,570 and £42,000: £1,765.80.
£42,000: self-employed, employed or in Scotland
Nearby profits
- £36,000£2,492 a month
- £38,000£2,616 a month
- £40,000£2,739 a month
- £44,000£2,986 a month
- £46,000£3,109 a month
- £48,000£3,232 a month
Contracting? £42,000 a year is about £200 a day over 220 days. Try your own figures in the self-employed tax calculator.
Questions people ask
How much tax do I pay on £42,000 self-employed?
£7,651.80 in total: £5,886.00 income tax and £1,765.80 Class 4 National Insurance, paid through self assessment. You keep £34,348.20.
How much should I save for tax on £42,000?
About £638 a month, or 18.2% of every pound of profit. Because the bill is over £1,000, your first year may also ask for a payment on account of £3,826 towards next year.
Do I keep more self-employed or employed on £42,000?
Self-employed you keep £34,348, employed £33,760, because Class 4 is 6% rather than 8%. Employees also get holiday pay and an employer pension contribution, which usually outweighs the difference.