State Pension Gaps - How to Check Missing National Insurance Years

Published 7 August 2026 · Facts checked against the sources listed at the end · Guidance, not financial advice

Planning for retirement is one of the most important financial steps you can take. However, many people are unaware that State Pension gaps in their National Insurance record could reduce the amount of State Pension they receive.

Missing National Insurance contributions can happen for many reasons, including periods of unemployment, self-employment, working abroad, caring responsibilities, or earning below the contribution threshold.

The good news is that many people can check their record, understand where any gaps exist, and in some cases increase their future State Pension by taking action.

In this guide, we'll explain what State Pension gaps are, how to check your National Insurance record, whether you can fill missing years, and what other financial support may be available.

What Are State Pension Gaps?

Your State Pension is built from qualifying years of National Insurance. For the full new State Pension — £241.30 a week in 2026/27 — you normally need 35 qualifying years, and at least 10 years to get anything at all. A gap is any tax year where you didn't pay (or get credited with) enough National Insurance for it to count.

Each missing year matters more than it sounds: one qualifying year is worth roughly £6.89 a week of pension — about £359 a year, for life.

How to Check Your Record (Free, 10 Minutes)

1. Go to gov.uk/check-national-insurance-record and sign in with (or create) a Government Gateway login.
2. You'll see every tax year back to when you started work, marked "Full year" or "Year is not full".
3. Then check your State Pension forecast — it shows what you're on track for and whether more years would actually increase it.

Free Ways to Fill Gaps First

Before paying, check whether you were owed free National Insurance credits for a gap year. Common examples: claiming Child Benefit for a child under 12 (even at a zero rate), being a carer (Carer's Credit if you cared 20+ hours a week), claiming Universal Credit, ESA or Jobseeker's Allowance, or jury service. Missing credits can often be applied retrospectively — free.

Buying Missing Years (Voluntary Class 3)

If credits don't cover a gap, you can usually pay voluntary Class 3 contributions for the last 6 tax years (in 2026/27 that reaches back to 2020/21). A full year costs £18.40 a week — about £957. Against a return of ~£359 a year for life, that pays for itself in under three years of retirement. Partial years are often cheaper to complete than you'd expect — check the exact price for each year in your record.

Self-employed with gaps? Class 2 rates may apply for some years and cost far less — call HMRC's National Insurance helpline before paying Class 3.

Already at State Pension Age on a Low Income?

If your State Pension is low, Pension Credit tops up a single person's weekly income to £238.00 (£363.25 for couples, 2026/27) and unlocks help with rent, heating and NHS costs. And if you've lost track of an old workplace pension, the free Pension Tracing Service can find it.