Calculate your self-employed tax including Income Tax, National Insurance, and Class 2/4 NICs.
Total Tax Bill
£7,311
Effective rate: 18.3%
Profit
£40,000
Income Tax
£5,486
Class 2 NI
£179
Class 4 NI
£1,646
Take Home
£32,689
Monthly
£2,724
Being self-employed means you are responsible for calculating and paying your own tax through Self Assessment. Understanding your tax obligations helps you set aside the right amount and avoid surprises.
Managing your business tax obligations efficiently can make a significant difference to your bottom line. You may also find our Corporation Tax Calculator useful for related calculations.
For a broader view of your finances, try the Employer NI Calculator or the Take-Home Pay Calculator. All of our calculators are free to use and updated for the 2026/27 tax year where applicable.
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