If you have gaps in your National Insurance (NI) record, buying voluntary contributions could add hundreds of pounds a year to your State Pension — for life. Here is everything you need to know.
How the State Pension Works
| Detail | Amount (2026/27) |
|---|---|
| Full new State Pension | £230.25 per week (£11,973 per year) |
| Qualifying years needed for full amount | 35 years |
| Minimum years needed for any State Pension | 10 years |
| Each qualifying year adds | Approximately £6.58/week (£342/year) |
You build up qualifying years through:
- Working and paying National Insurance (employee or self-employed)
- Receiving National Insurance credits (e.g. while claiming certain benefits, caring for a child under 12)
- Paying voluntary contributions
Related: State Pension Guide
Who Should Consider Buying Extra Years?
| Situation | Should you buy? |
|---|---|
| You have fewer than 35 qualifying years and are approaching State Pension age | Yes — likely very worthwhile |
| You have gaps from time abroad | Yes — often excellent value |
| You have gaps from career breaks (caring, illness) | Check first — you may have NI credits you don’t know about |
| You have gaps from self-employment before Class 2 was abolished | Yes — check your record |
| You already have 35+ qualifying years | No benefit — you already qualify for the full State Pension |
| You are very far from State Pension age with years of work ahead | Probably not yet — you may fill gaps naturally through future employment |
How to Check Your NI Record
Step by Step
| Step | Action |
|---|---|
| 1 | Go to gov.uk/check-national-insurance-record |
| 2 | Sign in with Government Gateway or GOV.UK One Login |
| 3 | View your record year by year |
| 4 | Note any gaps — the system shows which years are full, which have gaps, and which can be filled |
| 5 | Check your State Pension forecast at gov.uk/check-state-pension |
Your forecast will tell you:
- How much State Pension you are currently on track to receive
- How many qualifying years you have
- Whether paying voluntary contributions would increase your pension
Phone alternative: Call HMRC National Insurance helpline on 0300 200 3500 (Monday to Friday 8am–6pm).
Cost vs Benefit — Is It Worth It?
The Numbers
| Factor | Amount |
|---|---|
| Cost of one year of Class 3 voluntary contributions (2025/26 rate) | ~£907 |
| Additional State Pension gained per year | ~£342 per year |
| Years to break even | 2.7 years |
| If you live 20 years after State Pension age | Return of £6,840 for a £907 investment |
| If you live 25 years after State Pension age | Return of £8,550 for a £907 investment |
Worked Example — Filling 5 Years of Gaps
| Detail | Amount |
|---|---|
| Cost of filling 5 years | ~£4,535 (5 × £907) |
| Additional State Pension per year | ~£1,710 (5 × £342) |
| Break-even point | 2.7 years of pension payments |
| Total gained over 20 years of retirement | £34,200 |
| Total gained over 25 years of retirement | £42,750 |
| Net gain over 20 years | £29,665 |
This is one of the best guaranteed returns available — it beats virtually any savings account, ISA, or low-risk investment.
When It Is NOT Worth It
| Scenario | Why |
|---|---|
| You already have 35 qualifying years | No additional benefit — the State Pension is capped at 35 years |
| Your forecast already shows the full amount | Extra years won’t increase it |
| You are young with many working years ahead | You will likely fill gaps naturally — wait and check again later |
| You have serious health concerns | The break-even point is approximately 3 years — consider your individual circumstances |
| You are on Pension Credit | Higher State Pension may reduce your Pension Credit — check first |
Deadlines — Act Quickly
| Gap period | Deadline to fill | Notes |
|---|---|---|
| 2006/07 to 2018/19 | 5 April 2025 — deadline has now passed | Extended deadline has expired for most of these years |
| 2019/20 | 5 April 2026 | Last chance for this year |
| 2020/21 | 5 April 2027 | |
| 2021/22 | 5 April 2028 | |
| 2022/23 | 5 April 2029 | |
| 2023/24 | 5 April 2030 | |
| General rule | 6 years from end of tax year | After this, the gap is permanent |
Important: The extended deadline to fill gaps back to 2006/07 was 5 April 2025 — if you missed it, those years are now closed. Focus on any remaining gaps within the standard 6-year window.
How to Pay Voluntary Contributions
| Step | Action |
|---|---|
| 1 | Check your NI record and identify which years to fill |
| 2 | Call HMRC NI helpline: 0300 200 3500 |
| 3 | Ask them to confirm the cost and confirm it will increase your State Pension |
| 4 | Pay by bank transfer, cheque, or (for ongoing contributions) direct debit |
| 5 | Keep written confirmation of what you paid and which years it covers |
Critical step: Always call HMRC before paying to confirm:
- Which years have gaps
- How much each year costs to fill
- Whether filling the gap will actually increase your State Pension forecast
- That the deadline has not passed
Do not just pay without checking. HMRC will tell you exactly how much benefit you will get.
Class 2 vs Class 3 Contributions
| Type | Who pays | Cost (2025/26) | Qualifies for State Pension? |
|---|---|---|---|
| Class 2 | Self-employed (now abolished for current year) | £3.45/week (~£179/year) | Yes — full qualifying year |
| Class 3 | Voluntary — anyone filling gaps | £17.45/week (~£907/year) | Yes — full qualifying year |
If you were self-employed in the past and have gaps, check whether you can fill them with the cheaper Class 2 rate. This is particularly relevant for years when Class 2 still existed. Call HMRC to check eligibility.
National Insurance Credits — Free Qualifying Years
Before paying, check whether you are entitled to free NI credits for any gap years:
| Credit type | Who qualifies |
|---|---|
| Child Benefit | Parent or carer of a child under 12 (credits applied automatically through Child Benefit claim) |
| Carer’s Credit | Caring for someone 35+ hours a week (even if you don’t qualify for Carer’s Allowance) |
| Jobseeker’s Allowance | Automatic credits while claiming JSA |
| Employment and Support Allowance | Automatic credits while claiming ESA |
| Universal Credit | Credits applied if earnings are low |
| Jury service | Credits for time on jury duty |
| Specified Adult Childcare Credit | Grandparents and other family members caring for a child while the parent works |
Specified Adult Childcare Credit is often overlooked. If you care for a grandchild while the parent works, the parent can transfer their NI credit to you. Apply at gov.uk.
Special Situations
Living or Working Abroad
| Situation | Options |
|---|---|
| Working in an EU/EEA country | May count towards UK State Pension under social security agreements |
| Working in other countries with agreements | Check gov.uk/national-insurance-if-you-go-abroad for bilateral agreements |
| No agreement with country | Pay Class 3 voluntary contributions to maintain UK record |
| Returning to the UK | Check your record on return — you may have gaps worth filling |
Related: Money Guide — UK Expats Returning Home
Women with Gaps from the 1980s–2000s
Many women have NI gaps from years spent raising families before Child Benefit credits were automatic. Check whether:
- You claimed Child Benefit (credits should have been applied)
- Home Responsibilities Protection (HRP) was recorded on your record
- You can convert HRP years to qualifying years — contact HMRC
Step-by-Step Action Plan
| Step | Action | When |
|---|---|---|
| 1 | Check your NI record at gov.uk/check-national-insurance-record | Now |
| 2 | Check your State Pension forecast at gov.uk/check-state-pension | Now |
| 3 | Identify any gaps within the 6-year filling window | Now |
| 4 | Call HMRC on 0300 200 3500 to confirm cost and benefit | Before paying anything |
| 5 | Check whether any gaps are covered by credits you haven’t claimed | Before paying |
| 6 | Pay for any years that HMRC confirms will increase your pension | Before the deadline |
| 7 | Keep confirmation letters and payment records | Ongoing |