State Pension Forecast Calculator 2025/26
The full new State Pension is £221.20/week in 2025/26 — but you need 35 qualifying NI years to get the full amount. This calculator estimates your pension and shows you whether buying voluntary NI contributions makes financial sense.
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Your State Pension Forecast
Additional State Pension and SERPS — How They Affect Your Forecast
For those who reached State Pension age before 6 April 2016 under the old system, the Additional State Pension (SERPS, then S2P) was a significant component of the overall State Pension. People who reach State Pension age under the new system have their starting amount calculated as the higher of their old system entitlement (basic State Pension plus Additional State Pension, minus contracted-out deduction) and their new system entitlement (based on NI years × 1/35th of the full rate). Understanding which system applied to your working years and how contracted-out periods are treated is essential for understanding your actual forecast.
Deferring Your State Pension
If you continue working beyond State Pension age or simply do not need the income immediately, deferring your State Pension increases the weekly amount you eventually receive. Under the new State Pension, deferral adds 1% for every nine weeks you defer — approximately 5.78% per year. One year of deferral on the current full new State Pension (£221.20/week) adds approximately £12.80/week — worth £664 per year. The break-even point (when the additional weekly income has recouped the missed payments) is approximately 17 years, meaning deferral is only financially advantageous if you live long enough. There is no option to take a lump sum instead of a higher weekly rate under the new State Pension.
The State Pension Triple Lock
The triple lock is a government commitment to increase the State Pension each April by whichever is highest of three measures: earnings growth (measured by the Annual Survey of Hours and Earnings), CPI inflation (measured in September of the preceding year), or 2.5%. For 2025/26, the pension increased by 4.1% — the earnings measure. Over time, the triple lock has delivered consistently above-inflation increases to the State Pension, helping to maintain its real value. The policy remains politically important but is subject to ongoing review given its long-term cost.
NI Credits During Caring
Carer's Credit is a National Insurance credit available to people who care for one or more people for at least 20 hours per week. It provides a qualifying year for State Pension purposes without the carer needing to pay NI contributions. To claim Carer's Credit, the person being cared for must be receiving Disability Living Allowance care component (middle or highest rate), Personal Independence Payment daily living component, Attendance Allowance, or Constant Attendance Allowance. Carers who are already receiving Carer's Allowance (£81.90/week) get NI credits automatically — Carer's Credit is for those providing care but not receiving Carer's Allowance.
State Pension and Working Past State Pension Age
There is no compulsory retirement age in the UK — you can continue working past State Pension age. If you choose to defer your State Pension while working, it increases at 1% for every nine weeks deferred (approximately 5.78% per year). Meanwhile, continuing to work and pay NI does not increase your State Pension beyond 35 qualifying years under the new system — additional years above 35 do not generate further pension entitlement. The benefit of working past State Pension age is primarily deferral enhancement, not additional years building.
Understanding Your NI Record
You can view your complete National Insurance record at gov.uk/check-state-pension using your Government Gateway login. The record shows every year from when you started working, classified as: (a) qualifying year — full contributions paid; (b) year with some contributions — partial credit; (c) gap — no qualifying contributions. For each gap year, the record shows whether the gap can be filled with voluntary Class 3 contributions and the cost to do so.
Reviewing your NI record is one of the most valuable financial exercises you can do in your 50s, while there is still time to fill gaps cost-effectively. The check takes approximately 15 minutes and is entirely free. If you find gaps that can be filled, contact the Future Pension Centre (0800 731 0175) to obtain a personalised State Pension forecast showing the impact of filling each gap.
State Pension for People Who Have Lived or Worked Abroad
If you have lived or worked in another country, your NI record may be lower than expected — but overseas social security contributions can sometimes count towards UK qualifying years under bilateral agreements. The UK has agreements with many countries including European Economic Area countries, the USA, Canada, Australia (pre-2001), Japan, and others. If you have worked abroad, request a statement of your overseas social security contributions and contact the International Pension Centre to see whether they can be combined with your UK record.
Pension Credit Interaction
If your State Pension is lower than £218.15 per week (the Pension Credit Guarantee Credit level for 2025/26), you may be entitled to Pension Credit to top it up to this minimum level. Pension Credit is one of the most under-claimed benefits in the UK — an estimated £2 billion worth goes unclaimed annually. Claiming Pension Credit also automatically qualifies you for other entitlements including the Warm Home Discount, free NHS dental treatment, free eye tests, and potentially Housing Benefit and Council Tax Support. If you are near or at State Pension age with a modest income, always check Pension Credit eligibility.
Action Steps for Maximising Your State Pension
Start by checking your State Pension forecast and NI record at gov.uk/check-state-pension. Identify any gaps in your record, particularly those from periods of low earnings, self-employment, or time out of work. For each gap year identified, assess the cost to fill it (currently £824.20 for Class 3 voluntary contributions) versus the additional weekly pension you would receive (approximately £6.32/week — over £328/year). If you can fill gaps, prioritise the most recent ones first as you can generally fill the last six tax years.
If you are not working and caring for a child under 12, ensure you are claiming Child Benefit to receive automatic NI credits — even if the payment is not financially beneficial to you due to the HICBC, claim the benefit and opt out of payment to protect your NI record. Similarly, if you are caring for a disabled person for 20+ hours per week, claim Carer's Credit. These NI credits cost nothing and can fill gaps that would otherwise cost £824 per year to address through voluntary contributions.
Your State Pension is one of the most reliable and inflation-protected income sources available in retirement. Unlike private pensions (which depend on investment performance) or defined contribution schemes (which depend on pot size and annuity rates), the State Pension is guaranteed by the government and increases annually under the triple lock. Maximising your qualifying years — through voluntary contributions where necessary, NI credits during caring periods, and ensuring all employment contributions are recorded correctly — is one of the highest-return financial decisions available to working-age adults. A relatively small investment in voluntary contributions, made at the right time, can add thousands of pounds in guaranteed, inflation-linked income over a typical retirement period.