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Self-Employed Tax Calculator — UK Tax Calculator

UK Tax Calculator

Self-Employed Tax Calculatorfocused tool2026/27 · Take-home & tax
Income

Self-Employed Tax Calculator

Work out the tax on your self-employment profit — income tax plus Class 2 and Class 4 NI — including when you're both employed and self-employed.

Self-employed · your take-home
Combined take-home (employed + self-employed)

£51,157/yr

Your self-employment profit is added to your salary and taxed at your combined marginal rate, with Class 2 and Class 4 National Insurance on the profit on top of the employee NI on your salary.
Add your self-employment profit
Enter your self-employment profit in Settings to see the tax and National Insurance broken down.
What-if: a different profit

£0

£0tax + NI on £0 profit

Common questions

Quick answers for the 2025/26 tax year. For guidance only — not financial advice.