By profit
Tax on £50,000 of self-employed profit
The last stop before the higher rate in England, Wales and Northern Ireland, and well inside it in Scotland.
On £50,000 of profit in 2026/27, a sole trader in England, Wales or Northern Ireland pays £7,486 of Income Tax and £2,246 of Class 4 National Insurance: £9,732 in all, 19.5 % of the profit, leaving £40,268. The same profit in Scotland costs £11,228, because £6,338 of it already falls in the Scottish higher rate of 42 %. Fifty thousand pounds sits £270 below two limits that move together, the higher rate threshold of £50,270 and the Class 4 upper profits limit, so the marginal cost of the next pound is still the basic one. Three other rules meet near this figure: Making Tax Digital, which looks at turnover over £50,000, the Corporation Tax small profits limit, and the point at which accountants start suggesting a company.
Self Assessment bill 2026/27
£9,732
Put aside 19.5 % of your profit · next £100 of profit costs 26.0 %
| Profit | £50,000 |
| Income Tax | £7,486 |
| Class 4 National Insurance | £2,246 |
| Class 2 | treated as paid |
| Kept from your profit | £40,268 |
When you pay, if 2026/27 is your first year
| 31 January 2028: bill + first payment on account | £14,598 |
| 31 July 2028: second payment on account | £4,866 |
Each payment on account is half of £9,732 (Income Tax and Class 4, loans excluded). How payments on account work
Making Tax Digital at this turnover
Turnover of £50,000 is over the £30,000 test. If your 2025/26 return showed income like this, quarterly updates start on 6 April 2027. Check your start date
Figures checked by Radif Partners · Editorial policy · How we calculate
Two limits at £50,270
England, Wales and Northern Ireland line up the higher rate threshold and the Class 4 upper profits limit on the same figure, £50,270. Below it, every extra pound of profit costs 26 %: 20 % Income Tax and 6 % Class 4. Above it, the next pound costs 42 %: 40 % Income Tax and 2 % Class 4. At £50,000 you have £270 of room left before the change, so a few late invoices in March do not change the picture, but a good year that ends at £60,000 pays the higher rate on £9,730 of it. If that happens, a pension contribution is the simplest lever: paid into a personal pension, it earns 20 % from the provider and another 20 % through your return on the slice taxed at 40 %, and Class 4 is not affected either way.
| Profit | Income Tax rUK | Class 4 | Kept rUK | Kept Scotland |
|---|---|---|---|---|
| £45,000 | £6,486 | £1,946 | £36,568 | £36,172 |
| £48,000 | £7,086 | £2,126 | £38,788 | £37,732 |
| £50,000 | £7,486 | £2,246 | £40,268 | £38,772 |
| £50,270 | £7,540 | £2,262 | £40,468 | £38,913 |
| £52,000 | £8,232 | £2,297 | £41,471 | £39,881 |
| £55,000 | £9,432 | £2,357 | £43,211 | £41,561 |
Scotland at the same profit
A Scottish taxpayer crossed into the 42 % band at £43,663, so £6,338 of a £50,000 profit is already taxed at the higher rate. Class 4 does not follow: it keeps the UK limits, 6 % up to £50,270. The marginal rate in Scotland at this profit is therefore 48 %, 42 % plus 6 %, the highest combined rate a Scottish sole trader meets below £100,000. A Scottish sole trader at this profit who expects a better year should look at pension contributions first: relief at 42 % is worth more than at 40 %.
Turnover, not profit, decides Making Tax Digital
HMRC brought sole traders and landlords whose 2024/25 qualifying income was more than £50,000 into Making Tax Digital on 6 April 2026. Qualifying income is turnover plus gross rents, before any expense. A consultant with £50,000 of profit and almost no costs may sit right at the line; a builder with the same profit and £30,000 of materials is well over it. The test then drops to £30,000 for 2025/26 figures and £20,000 for 2026/27, so most people at this profit will be keeping digital records by April 2027 whatever happens.
Is it time for a company?
The old rule of thumb said yes. With 2026/27 rates, a one-person company that pays itself the best salary, £12,570 here, and draws everything else as dividends leaves £38,862, against £40,268 as a sole trader: £1,406 less, before accountancy fees. The company only pulls ahead if you leave profit inside it, for example to fund equipment next year or to draw it in a year when your other income is lower. The comparison calculator draws that curve.