Class 4 National Insurance

Plain English, for UK sole traders. Verified against HMRC primary sources on 4 July 2026. Sources checked daily; last check 18 August 2026.

The National Insurance the self-employed pay on profits, through Self Assessment. For 2026-27: 6% on profits between £12,570 and £50,270, then 2% above. It's part of the same bill as your Income Tax.

Compliance first.Every figure verified verbatim against HMRC primary sources, with the date on the page

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