Calculator

Self-employed tax calculator.

Enter your profit and see the income tax and Class 4 National Insurance to set aside, and what you keep.

Tax year
2026/27
England, Wales and Northern Ireland rates

Work out what to set aside

Change the numbers and the result updates instantly.

How it is worked out

Income tax uses a personal allowance of £12,570, 20% on the next £37,700, 40% up to £125,140 and 45% above that. The personal allowance reduces once total income passes £100,000.

Class 4 National Insurance is 6% on profits between £12,570 and £50,270 and 2% above that. Class 2 is no longer payable for most self-employed people.

Authorised and regulated

Is Cheap Tax Returns authorised and regulated? Yes.

Your return is prepared by qualified UK accountants holding qualifications from the leading accountancy bodies: ICAEW, ACCA and AAT. We are also on the ICAEW approved employers list, so you can file with confidence.

ICAEW Chartered Accountants logo
ACCA Think Ahead logo
AAT logo

Regulated by the professional bodies. Reviewed by qualified accountants. Part of Accotax.

Questions

Questions, answered.

The balancing payment is due by 31 January after the tax year ends. Payments on account may also be due on 31 January and 31 July.

Enter your profit after allowable expenses. Claiming every allowable expense lowers the tax.

Free fixed-fee quote

Know your price before we start.

Get your free quote

Name
Scroll to Top