Answers · UK 2025/26

How much tax do I pay on £35,000 self-employed profit in the UK?

On £35,000 of self-employed profit for 2026/27 you pay about £4,486 Income Tax and £1,346 Class 4 National Insurance, a total of around £5,832, leaving roughly £29,168. That assumes the standard £12,570 Personal Allowance and no other income.

Last updated: 7 June 2026Last reviewed: 7 June 2026How we verify

Full answer

For a sole trader with £35,000 of profit in 2026/27, tax is worked out on your profit after allowable business expenses. The first £12,570 is covered by the Personal Allowance, so £22,430 is taxed at the 20% basic rate, giving £4,486 of Income Tax. Class 4 National Insurance is charged at 6% on profits between £12,570 and £50,270, so 6% of £22,430 is £1,346. Class 2 National Insurance is no longer a mandatory flat charge, but you are still credited towards the state pension as if you had paid it when profits are above the threshold, and you can pay voluntary Class 2 at £3.65 a week if your profits are low. The combined Income Tax and Class 4 NI is about £5,832, leaving net profit of around £29,168. You pay this through Self Assessment, with the balancing payment due by 31 January after the tax year and possibly payments on account towards the next year if your bill is over £1,000. Remember you can deduct legitimate business expenses, the £1,000 trading allowance if you have not deducted actual expenses, and pension contributions to reduce your taxable profit. Keeping good records throughout the year makes the return much easier. Use the Self-Employed Tax calculator to enter your profit and see Income Tax and NI together.