Self-Employed Tax Calculator

Income tax + Class 4 NI on self-employed profits.

Result

Income tax-£6,486.00
Class 4 NI-£1,945.80
Take-home£36,568.20
Monthly£3,047.35

Self-Employed Tax Calculator — FAQs

Self-employed tax?

Income tax at normal bands + Class 4 NI at 6% between £12,570–£50,270, 2% above. On £45k profit ≈ £9.6k combined.

Class 2 NI?

Abolished April 2024 — sole traders only pay Class 4 now.

Self-employed NI rates?

Class 4: 6% between £12,570–£50,270, then 2%. Class 2 was abolished April 2024.

When is self-assessment due?

31 January for online filing, plus payments on account in January and July if your bill exceeds £1,000.

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