Key facts (2026): National Insurance (NI) is a tax on earnings that funds the NHS, state pension, and certain benefits. The main rate for employees (Class 1) is 8% on earnings between £12,570 and £50,270, and 2% above £50,270. Employers pay 13.8% on earnings above £5,000 (from April 2025). Self-employed people pay Class 4 NI.
National Insurance is the second-largest tax most working people pay, yet it is less well understood than income tax. Your NI record directly affects your entitlement to the state pension — you need 35 qualifying years for the full new state pension (£241.30/week in 2025–26). Understanding how NI works helps you plan for retirement and identify gaps in your record.
National Insurance Rates 2025–26
Class 1 (employees): 8% on earnings from £12,570 to £50,270 per year; 2% above £50,270. Class 1A/1B (employers): 13.8% on earnings above £5,000 per year (threshold reduced from April 2025). Class 2 (self-employed): £3.45/week if profits exceed £12,570 (voluntary if below). Class 4 (self-employed): 6% on profits between £12,570 and £50,270; 2% above £50,270. Class 3: voluntary contributions of £17.45/week to fill gaps in your NI record.
How NI Affects Your State Pension
You need 35 qualifying years of NI contributions (or credits) to receive the full new state pension of £241.30 per week (2025–26). You need at least 10 qualifying years to receive any state pension. Years when you were not working but received NI credits — through claiming Child Benefit, being a carer, or being on certain benefits — count toward your 35 years. Check your state pension forecast at gov.uk/check-state-pension.
Voluntary NI Contributions — Filling Gaps
If you have gaps in your NI record, you can pay voluntary Class 3 contributions to fill them — currently £17.45 per week. Filling a gap year costs approximately £907 and buys 1/35th of the full state pension (worth approximately £6.33/week or £329/year for life). This makes voluntary NI contributions one of the best financial returns available to those approaching state pension age with gaps in their record.
Our Verdict
National Insurance is not just a tax — it is an investment in your state pension entitlement. Check your NI record at gov.uk/personal-tax-account and identify any gaps before the deadlines for back-paying voluntary contributions (currently extended to April 2025 contributions for pre-2006 gaps). If you have gaps and can afford to fill them, voluntary Class 3 contributions offer excellent value relative to the pension benefit received.
Frequently Asked Questions
How much National Insurance do I pay 2026?
8% on earnings between £12,570 and £50,270; 2% above that. These are employee Class 1 rates.
How many NI years do I need for a full state pension?
35 qualifying years for the full new state pension of £241.30/week (2025-26 rate).
Can I top up my National Insurance record?
Yes — voluntary Class 3 contributions cost £17.45/week and fill gaps in your record. Check your state pension forecast at gov.uk/check-state-pension.
Disclaimer: For informational purposes only. Verify with gov.uk or qualified professionals before making decisions.
Last updated: April 2026 · Author: Chandraketu Tripathi
Part of our complete guide:
