National Insurance funds your State Pension and contributory benefits. Class 1 for employees at 8%, Class 4 for the self-employed, the 15% employer rate and how to fill gaps — explained with worked examples.
The rates and thresholds for employees, the self-employed and employers, how NICs build your State Pension, and how to fill gaps — with worked examples and the exact HMRC tools to use.
National Insurance contributions (NICs) fund the State Pension and contributory benefits such as Maternity Allowance and contribution-based Jobseeker’s Allowance. Unlike Income Tax, NICs stop once you reach State Pension age — so pension income is never subject to National Insurance. You need 35 qualifying years for the full new State Pension (£241.30 a week in 2026/27) and at least 10 years for any State Pension at all.
| Earnings (2026/27) | Employee rate |
|---|---|
| Up to £242/week (£12,570/yr) | 0% |
| £242 – £967/week | 8% |
| Over £967/week (£50,270/yr) | 2% |
Your employer also pays 15% employer NICs on your earnings above £96/week (£5,000/year), a rate that rose in April 2025. Model any salary with the National Insurance calculator.
Self-employed people pay Class 4 NICs through Self Assessment: 8% on profits between £12,570 and £50,270, then 2% above. Class 2 NICs were folded into the system from April 2024, so most self-employed people no longer pay a separate flat weekly charge but still build State Pension entitlement.
Class 4 is paid alongside Income Tax via the SA100/SA103 by 31 January. The Self Assessment calculator includes it.
If you have years where you didn’t work, earned below the threshold, or lived abroad, you may have gaps that reduce your State Pension. You can usually pay voluntary Class 3 contributions (around £17.45 a week for 2026/27) to fill gaps, normally up to six years back.
View your National Insurance record and a State Pension forecast in your Personal Tax Account. Only top up gaps that actually increase your pension — the Check your State Pension forecast tool shows the effect before you pay.
Company directors pay Class 1 NICs on salary, but dividends carry no National Insurance. That’s why many owner-managers take a modest salary (often around the £12,570 Personal Allowance) topped up with dividends. With dividend tax rates having risen in April 2026, the optimal split has narrowed — model it with our Director Salary calculator and read the savings & dividends guide.
HMRC rates and thresholds: gov.uk/national-insurance-rates-letters. State Pension: gov.uk/new-state-pension.
No sign-up. Updated for 2026/27. Pair these with the guide above.
How Income Tax works alongside NICs through your tax code.
Read guide →State Pension, the 35-year rule and private pension tax relief.
Read guide →Class 4 NICs on self-employed profits and when they apply.
Read guide →Tax relief for employees required to work from home.
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Class 1, 2 and 4 NICs, State Pension entitlement and filling gaps — answered.
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Find an expert →UK Tax Hero provides general tax guidance and a free expert-matching service for the 2026/27 tax year. It is not personal tax, legal or financial advice. Figures are based on published HMRC rates and may change. Always confirm details on GOV.UK or with a qualified professional before acting.