Self-Employed Tax Calculator 2025-26
Calculate income tax and National Insurance as a sole trader or freelancer.
📖 How is self-employed tax calculated?
As a sole trader you pay Income Tax on profits above your personal allowance, plus Class 2 and Class 4 National Insurance. Unlike employees, nothing is deducted automatically — you pay via a Self Assessment tax return by 31 January each year.
2025-26: Class 2 NI abolished · Class 4 NI: 6% on profits £12,570–£50,270, 2% above · Self Assessment deadline: 31 Jan · First payment on account is due the same January
Take-Home Pay
£29,168
£2,431/month
Effective Tax Rate
16.7%
Each Payment on Account
£2,916
Paid Jan & Jul
Estimates only for 2025-26. Class 2 NI abolished from 6 April 2025. Class 4 NI: 6% on profits £12,570–£50,270, 2% above. Source: gov.uk. Consult an accountant for personal advice.