£58,000 self-employed profit after tax in Wales (2026-27)
A sole trader in Wales with £58,000 of profit pays £10,632 of Income Tax and £2,417 of Class 4 National Insurance in 2026-27. That leaves £44,951, about £3,746 a month.
| Taxable profit | £58,000 |
| Personal Allowance | £12,570 |
| Income Tax | £10,632 |
| Class 2 NI (treated as paid) | £0 |
| Class 4 NI | £2,417 |
| Profit after tax and NI | £44,951 |
| Per month | £3,746 |
How this is worked out
Profit is income minus allowable expenses. Income Tax is charged on profit above the £12,570 Personal Allowance. Welsh Income Tax rates for 2026-27 are 20%, 40% and 45%, the same as in England.
Class 2 National Insurance is treated as paid when profits are £7,105 or more, so there is nothing to pay. Class 4 is 6% on profits between £12,570 and £50,270 and 2% above.
Assumptions: 2026-27 rates, no other income, no pension contributions. Tax and Class 4 are paid through Self Assessment.
Sources: Self-employed National Insurance rates (GOV.UK), Income Tax in Wales (GOV.UK)