UK National Insurance Calculator

Estimate your Class 1 employee National Insurance contributions on annual salary.

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How it works

Employee National Insurance is charged at 8% on earnings between the primary threshold and the upper earnings limit, and 2% on anything above that. Nothing is due below the primary threshold.

Illustrative estimate only, using simplified/rounded 2026/27 UK figures — not tax advice. Always confirm with HMRC or a qualified UK tax adviser.