On £45,000 profit, a sole trader takes home ££36,568/year (££3,047/month) in 2026/27, paying ££6,486 income tax and ££1,946 Class 4 NI. Total tax: ££8,432 at an effective rate of 18.74%.
| Item | Amount | Note |
|---|---|---|
| Gross profit | £45,000 | |
| Income tax | −£6,486 | Self Assessment |
| Class 4 NI | −£1,946 | 6% on £12,570–£50,270; 2% above |
| Take-home pay | £36,568/yr | £3,047/mo |
Assumes England/Wales tax rates, 2026/27 tax year, no pension contributions, no other income, no student loan. Use the full calculator to model your specific position.
| Band | Rate | Taxable | Tax |
|---|---|---|---|
| Basic rate | 20% | £32,430 | £6,486 |
Monthly tax to set aside: £703 — on £45,000 profit, total tax is ££8,432. Setting aside £703 each month avoids a large Self Assessment bill in January. Payments on account (if due) are roughly ££2,108 each.
On £45,000 profit, income tax is ££6,486 in 2026/27 under England/Wales rates. The first £12,570 (personal allowance) is tax-free; the basic rate of 20% applies up to £50,270; the higher rate of 40% applies above that. Income tax is paid via Self Assessment each January (with payments on account in January and July).
Class 4 NI on £45,000 profit is ££1,946 in 2026/27. The rate is 6% on profits between £12,570 and £50,270, and 2% on profits above £50,270. Class 4 NI is also paid via Self Assessment, not through PAYE.
After income tax (££6,486) and Class 4 NI (££1,946), a sole trader on £45,000 profit takes home ££36,568 per year — ££3,047 per month. This assumes England/Wales rates, no pension contributions and no other income.
At £45,000, a sole trader's effective tax rate is 18.74%. A limited company structure can reduce the combined tax burden, particularly above £50,000 profit, but involves accountancy costs, administrative overhead and Companies House filing obligations. The saving needs to outweigh the additional cost. Use a qualified accountant to model your specific situation before changing structure.
Adjust pension contributions, student loan plan, region and other income in the full calculator.
Open calculator with £45,000 →