What Is National Insurance and How Much Do You Pay?

National Insurance is often described as a separate tax from income tax — and while it’s collected differently, it functions in practice as additional earnings taxation. What distinguishes it is the entitlement dimension: NI contributions build your record for the State Pension and certain other benefits. Understanding how much you pay and what it buys you is essential for financial planning.

Why NI Matters Beyond Just Tax

Your contribution record can affect State Pension and contribution-based benefit entitlement. Different benefits have different conditions; statutory sick pay and statutory parental pay have separate eligibility rules.

• The full new State Pension is £241.30 a week in 2026/27. If your NI record started after April 2016, 35 qualifying years are needed for the full rate. Earlier records have transitional rules; people who were contracted out may need more years.
• A qualifying year requires sufficient contributions, contributions treated as paid, or credits; making any payment in a year does not automatically make it qualifying.

Check your NI record and State Pension forecast. See the official pension rules for your circumstances.

Employee NI Rates 2026/27

These are standard category A rates, with annual equivalents shown below. Most employees are assessed each pay period, so weekly or monthly thresholds apply; other NI categories have different rates.

• No NI on earnings up to £12,570 (Primary Threshold — aligned with Personal Allowance since 2022)
• 8% on earnings from £12,570 to £50,270
• 2% on earnings above £50,270

These rates were reduced from 12% and 2% to 10% and 2% in January 2024, then further reduced to 8% from April 2024 — a significant reduction for most employees.

Employer NI

The standard employer rate is 15% above the secondary threshold (£5,000 annual equivalent for 2026/27). The threshold reduction from £9,100 took effect on 6 April 2025, not 2026. Reliefs and Employment Allowance can affect the amount due. Check HMRC rates and thresholds.

Self-Employed NI

• For 2026/27, profits of £7,105 or more normally mean Class 2 contributions are treated as paid, without a Class 2 charge. Below this level, eligible people can choose to pay voluntary Class 2 at £3.65 a week.
• Class 4 is 6% on profits over £12,570 up to £50,270 and 2% above £50,270, generally paid through Self Assessment.

See HMRC’s self-employed NI guidance for exceptions and payment arrangements.

Filling Gaps in Your NI Record

Voluntary contributions may help fill eligible gaps, but do not always increase your pension. Check whether you can claim NI credits first, then review your forecast and confirm whether paying would help before spending money. Class 3 is £18.40 a week for 2026/27; different rates may apply when paying for earlier years. Eligible self-employed people may be able to pay Class 2 instead. Read the eligibility guidance and current voluntary rates.

For how NI connects to your State Pension and retirement planning, our guide on how much to save for retirement covers the full picture.

Frequently Asked Questions

Do NI contributions buy me retirement income directly?

Not directly — NI contributions don’t go into a personal fund. They fund current State Pension payments (pay-as-you-go system) and build your entitlement record. Your eventual State Pension is determined by your qualifying years, not the total amount you’ve contributed.

Can I avoid paying NI legally?

NI is mandatory on qualifying earnings. Salary sacrifice pension contributions reduce NI for both employee and employer — one legitimate way to reduce total NI liability while saving more for retirement.

Official NI guidance is at gov.uk/national-insurance.