The foundation everyone has — and few check
The full new State Pension pays around £12,000 a year from State Pension age (currently 66, rising to 67 by 2028), increased annually by the triple lock (the highest of earnings growth, inflation, or 2.5%). It’s inflation-proofed income for life that would cost roughly £300,000+ to buy as an annuity — the bedrock under every retirement plan, including the drawdown strategies in the retirement guide. Yet most people have never looked at what they’re actually on track to get.
Check now — it takes five minutes: search “Check your State Pension forecast” on gov.uk and sign in. You’ll see your projected amount, your National Insurance record year by year, and any gaps. Do this decades before retirement, not months.
How qualifying years work
You need 35 qualifying years of National Insurance for the full amount (10 years minimum to get anything); each year is worth roughly 1/35th — about £340 a year of pension, for life. Years qualify through:
- Working and paying NI (earnings above about £6,500 a year — note you can qualify from earnings slightly below the point where you actually pay NI);
- NI credits — automatically or by claim — for periods on Child Benefit with a child under 12, Universal Credit and other benefits, Carer’s Allowance, jobseeking, and more. Grandparents providing childcare can claim transferred credits (“Specified Adult Childcare credits”), one of the most under-claimed perks in the system;
- Voluntary contributions — buying years, below.
Common gap-makers: years abroad, low-earning self-employment, career breaks, university years, early retirement — and parents who never claimed Child Benefit after the high-income charge arrived in 2013, unknowingly forfeiting free credits (claim it at 0% payment to keep the credits).
Buying voluntary NI years — the arithmetic
If your forecast shows you’ll fall short of 35 years, you can usually fill gaps from the previous six tax years with voluntary Class 3 contributions (self-employed people can often use far cheaper Class 2). The deal is startling:
One Class 3 year costs about £900–£950. It buys about £340 a year of State Pension, for life, inflation-linked. That’s payback in under three years of retirement — an effective annuity rate near 35%, versus about 6–7% on the open market. Live twenty years past pension age and £950 has returned roughly £6,800 plus inflation.
Three checks before paying, because the wrong year buys nothing:
- Will more years actually increase your pension? If you’ll reach 35 years anyway by working until retirement, buying now is wasted. The forecast page shows this.
- Could a free credit fill the gap instead? Check for claimable credits before spending money.
- Contracted-out history (common with public-sector and older private schemes) complicates the calculation — some people need more than 35 years. Phone the Future Pension Centre before paying; they’ll confirm exactly which years help. Payment is then made via HMRC with a reference, and the forecast updates in weeks.
The closer you are to State Pension age with a shortfall, the more clear-cut the purchase. It is routinely the best-returning “investment” available to a UK adult — and if a shortfall in retirement income is already biting for you or your parents, run the Benefits Pre-Checker too: Pension Credit tops up low State Pensions and unlocks other help.
The one-line summary
Check your forecast on gov.uk today, claim every free credit you’re owed, and if a gap remains, buying voluntary NI years — verified first with the Future Pension Centre — is probably the highest-returning purchase you will ever make.
Related guides & tools
- Retirement drawdown — how the State Pension anchors a withdrawal plan
- Workplace pensions — the second layer that sits on top of the state foundation
- Pension tax relief — the incentives on everything you save above it
- Benefits Pre-Checker — two minutes to check for Pension Credit and Attendance Allowance
Last reviewed: July 2026.