State Pension Top-Up: Should You Pay Voluntary NI in 2026?
The full State Pension is £241.30/wk in 2026/27. Filling NI gaps costs £956.80 per missing year but breaks even in under 3 years — if you have genuine gaps. Here's exactly how to check and whether it's worth it.
Quick answer
If you have gaps in your National Insurance record and are below State Pension age (66), filling them with Class 3 voluntary contributions costs £956.80 per full year and adds roughly £6.89 per week to your State Pension. You break even in under three years of receiving your pension.
But first, check that you actually need the extra years — many people assume they have gaps when they don't, or already have enough qualifying years for the full amount.
State Pension Forecast Calculator
Forecast your UK State Pension based on qualifying NI years and model the impact of filling gap years with voluntary Class 3.
Open State Pension Forecast calculatorHow the State Pension works in 2026/27
The new State Pension applies to people who reached State Pension age on or after 6 April 2016. In 2026/27:
- Full amount: £241.30 per week (£12,548.60 per year).
- Minimum qualifying years: 10 (for any State Pension at all).
- Full amount qualifying years: 35.
Each qualifying year adds approximately £6.89/wk to your pension (£241.30 ÷ 35).
People with contracting-out history may have a lower starting amount — their record is adjusted. Check your actual personal forecast, not just the generic 35-year figure.
The 2026/27 rise
The 2026/27 increase was driven by the Triple Lock mechanism — the 4.8% earnings growth figure from September 2025 was the highest of the three measures (earnings, CPI, 2.5%), so the State Pension rose by 4.8% from £230.25/wk to £241.30/wk.
How to check your NI record
Step 1: Go to gov.uk/check-state-pension.
Step 2: Sign in to your Government Gateway or Personal Tax Account.
Step 3: View:
- Your State Pension forecast (what you will get at SPA based on your record today).
- How many qualifying years you have.
- Whether gaps exist and which years they cover.
- Whether those gaps can still be filled and what it would cost.
The tool shows you the exact cost to fill each gap — it is not always a full year's cost. If you worked for 40 weeks in a gap year, for example, you may only need to pay for 12 weeks to make it qualifying.
National Insurance Calculator
Calculate your National Insurance contributions for 2025/26.
Open National Insurance calculatorThe gap-filling deadline change
This is critical: a temporary extension that allowed people to fill pre-April 2006 NI gaps closed on 5 April 2025. If you missed that deadline, those pre-2006/07 gaps are now permanently unfillable.
Going forward, you can only fill gaps within the standard six-year window:
| Gap year | Deadline to fill |
|---|---|
| 2020/21 | 5 April 2027 |
| 2021/22 | 5 April 2028 |
| 2022/23 | 5 April 2029 |
| 2023/24 | 5 April 2030 |
| 2024/25 | 5 April 2031 |
| 2025/26 | 5 April 2032 |
The 2020/21 year is the most urgent. If you have a gap in that year and want to fill it, you have until 5 April 2027.
The cost of filling gaps
Class 3 voluntary NI (most people)
The Class 3 rate in 2026/27 is £18.40 per week. A full year has 52 weeks, so a complete missing year costs:
52 × £18.40 = £956.80
This rate is set each year and typically rises with earnings. If you defer filling gaps to future years, the cost may be higher.
Class 2 voluntary NI (former self-employed)
If you were self-employed during a gap year, you may be eligible to pay Class 2 instead:
Class 2 rate 2026/27: £3.65/week = £189.80 for a full year
This is approximately one-fifth the cost of Class 3 and offers the same pension benefit. When reviewing gaps, always check whether you were self-employed in those years — this can transform the economics.
Break-even analysis
A full Class 3 year costs £956.80 and adds £6.89/wk to your State Pension.
| Time after SPA | Cumulative extra pension received |
|---|---|
| 1 year | £358 |
| 2 years | £716 |
| 2.7 years | £957 (break-even) |
| 5 years | £1,791 |
| 10 years | £3,583 |
| 20 years | £7,166 |
State Pension age is currently 66. A man reaching 66 in 2026 has a life expectancy of approximately 86, and a woman approximately 88. That is 20–22 years of pension receipt, giving a return of £7,166–£7,849 on a £956.80 investment — an extraordinary guaranteed return.
Even accounting for the time value of money (you spend £957 now but receive £6.89/wk later), the net present value at a 4% discount rate is strongly positive for most people with 15 or more years of expected retirement ahead.
Worked example: Joanne, aged 60, four missing years
Joanne checks her forecast and sees:
- Qualifying years to date: 28.
- Years left until SPA at 66: 5, which will add 5 more years via employment.
- Maximum possible by working: 33 qualifying years.
- Forecast at 33 years: 33 ÷ 35 × £241.30/wk = £227.65/wk = £11,838/yr.
She has four gaps (2020/21–2023/24) from a period living abroad. Filling all four:
| Amount | |
|---|---|
| Cost: 4 × £956.80 | £3,827 |
| Annual pension uplift: 4 × £6.89/wk × 52 | £1,433/yr |
| Pension at full 35 years | £241.30/wk = £12,548/yr |
| Break-even vs not filling | 2.7 years (age ~69) |
| Extra pension by age 86 (20 years) | £28,660 |
Joanne's £3,827 investment generates over £28,000 of additional pension over a 20-year retirement. The decision is straightforward.
Who should NOT top up
Paying voluntary NI is not always the right call:
- You already have 35 or more qualifying years. Additional years do not increase your State Pension.
- You will reach 35 qualifying years through current or future employment. If you are 55 with 30 qualifying years and plan to work until 65, you will accumulate the remaining 5 years naturally.
- You have a serious health condition that materially reduces life expectancy below the ~2.7-year break-even point.
- Your forecast is already at maximum. The online tool will confirm this.
- You contracted out of SERPS or S2P with a large deduction. In some cases, additional qualifying years still cannot bring you to the full State Pension due to the deduction. Always check the personal forecast figure from the DWP.
Pension Calculator
Estimate your pension pot at retirement and projected annual income.
Open Pension calculatorHow to pay
Once you have confirmed the gap years and costs via your Personal Tax Account:
- Log in to Government Gateway.
- Navigate to National Insurance record and top-up.
- Select the year(s) to fill.
- Pay by bank transfer, debit card or cheque (the tool provides HMRC's payment details).
Alternatively, call the HMRC National Insurance helpline: 0300 200 3500.
Payments are typically processed within six weeks. Your NI record online will update once processed.
Special cases: carers and parents
If you were a carer or parent during the gap years:
- Child Benefit: claiming Child Benefit when your child was under 12 earns NI credits automatically — these appear as qualifying years in your record.
- Specified Adult Childcare Credits: if you cared for a grandchild under 12 while the parent was working, the parent could transfer their NI credit to you.
- Carer's Allowance: receiving Carer's Allowance earns NI credits automatically.
It is worth checking your record carefully before paying — many parents and carers discover their gaps were already credited.
What about overseas gaps?
If you lived or worked abroad and have gaps in your UK NI record, Class 3 contributions fill them in the same way as domestic gaps. The same six-year window applies regardless of where you currently live. Check via the same Personal Tax Account tool — it works if you have a Government Gateway account.
State Pension and the tax threshold
A note worth flagging: the full State Pension of £12,548/yr now sits very close to the frozen Personal Allowance of £12,570. A pensioner with only State Pension income pays virtually no income tax. But any occupational pension, SIPP drawdown, or part-time earnings will push total income above the Personal Allowance and into tax. The frozen PA (held until at least 2028) means more pensioners will become taxpayers each year as the Triple Lock pushes the State Pension higher.
Sources
Frequently asked questions
How much is the full State Pension in 2026/27?
The full new State Pension is £241.30 per week (approximately £12,548 per year) in 2026/27. You need 35 qualifying National Insurance years to receive the full amount.
How much does it cost to fill a one-year NI gap?
Class 3 voluntary NI contributions cost £18.40 per week in 2026/27, which is £956.80 for a full year. Partial years are cheaper — you pay only the number of weeks needed to make the year qualifying.
How quickly do you break even on a voluntary NI top-up?
One additional full year of NI costs £956.80 and adds approximately £6.89 per week to your State Pension (£241.30 ÷ 35 qualifying years). That means you break even in about 2.7 years after State Pension age. If you live an average lifespan, the return is substantial.
How do I check my NI record for gaps?
Log in to your Personal Tax Account at gov.uk/check-state-pension. You will see your current forecast, how many qualifying years you have, and any gaps that can be filled.
What years can I fill in 2026?
Since April 2025, the extended deadline for filling pre-2006/07 gaps has closed. You can now only fill gaps going back six years: 2020/21, 2021/22, 2022/23, 2023/24, 2024/25 and 2025/26.
Who should NOT pay voluntary NI contributions?
You should not top up if: (1) you already have 35 or more qualifying years; (2) you will reach 35 years through future employment before State Pension age; (3) you have a serious health condition that significantly reduces life expectancy; or (4) your State Pension forecast is already at the maximum.
Are voluntary NI contributions tax deductible?
No. Class 3 voluntary NI contributions are paid from post-tax income and are not deductible for income tax purposes.
Can I fill gaps if I am already past State Pension age?
No. You can only fill NI gaps while you are below State Pension age (currently 66). Once you have reached SPA and claimed your pension, you cannot increase it by paying voluntary NI.
What if I am self-employed with gaps?
Self-employed people pay Class 2 NI which counts toward State Pension. If you registered late or had gaps in self-employment, Class 2 is significantly cheaper than Class 3 and fills those gaps. Class 2 is only available if you were self-employed in the gap year.
Is there a deadline to pay voluntary NI contributions for 2020/21?
The standard six-year window means the deadline to pay for 2020/21 is 5 April 2027. After that date, the 2020/21 year drops out of the window and cannot be filled.
Try the calculators
State Pension Forecast Calculator
Forecast your UK State Pension based on qualifying NI years and model the impact of filling gap years with voluntary Class 3.
National Insurance Calculator
Calculate your National Insurance contributions for 2025/26.
Pension Calculator
Estimate your pension pot at retirement and projected annual income.
Related reading
State Pension Forecast 2026/27: How to Check Your Entitlement and Fill Gaps
The full State Pension is £241.30/week (£12,548/year) in 2026/27. Here is how to get your personal forecast online, how many qualifying years you need, and whether buying voluntary NI contributions is worth it.
Triple Lock State Pension 2027 Forecast: What the Next Rise Could Be
The State Pension rose 4.8% to £241.30/wk in 2026/27. The 2027/28 rise will be decided by CPI in September 2026 — currently forecast at 3%+. What pensioners and those approaching SPA need to know now.
Additional State Pension: SERPS and S2P Explained for Anyone Still Getting the Old State Pension
If you reached State Pension age before April 2016, you may have Additional State Pension (SERPS or S2P) on top of the basic pension. How it's calculated and uprated in 2026/27.