A UK State Pension calculator based on your NI years
This State Pension calculator for the UK estimates your new State Pension from the number of qualifying National Insurance years on your record, works out your State Pension age from your date of birth, and shows what buying missing years or deferring your claim would add. It uses the 2026/27 full rate of £241.30 a week.
Each qualifying year is worth 1/35 of the full rate — about £6.89 a week, or £358 a year. You need at least 10 years for anything and 35 for the full amount. The calculator counts the full tax years left before your pension age, so you can see whether you will reach 35 by working, or whether filling gaps with voluntary Class 3 contributions is worth it.
Figures come from GOV.UK and the DWP (checked 24 October 2026) and the sums run in your browser. This is an estimate, not financial advice: your official forecast on GOV.UK is the figure to rely on, especially if you were contracted out before 2016.
How to use the UK State Pension Calculator
- Enter your date of birth to get your State Pension age and the date you reach it.
- Enter your qualifying NI years so far — they are listed on your National Insurance record.
- Enter the years you expect to add before State Pension age; the stats show how many full tax years are left.
- Optionally type your GOV.UK forecast, the gap years you might buy with Class 3, and the weeks you would defer.
- Read the weekly, four-weekly and yearly amounts and the notes, then copy the estimate.
UK State Pension Calculator features
Amount from NI years
£241.30 × qualifying years ÷ 35, with the 10-year minimum and the 35-year cap.
State Pension age by date of birth
The legal timetable: 66, the monthly steps to 67 for 1960–61 births, 67, and the 2044–2046 rise to 68.
Gap filling
Cost of voluntary Class 3 years at £18.40 a week and how many years of pension it takes to pay back.
Deferral
Adds 1% for every 9 weeks you delay and shows how long it takes to win back the payments you gave up.
Forecast override
Type your GOV.UK forecast to include contracting out or a protected payment.
How the new State Pension is worked out
For a National Insurance record that started after April 2016, the weekly amount is the full rate × your qualifying years ÷ 35, as long as you have at least 10 years. Years come from paid NI on earnings above the lower earnings limit, self-employed contributions, voluntary contributions and NI credits (for example while claiming Child Benefit for a child under 12, Carer’s Allowance or Universal Credit).
Worked example: born 20 May 1970, with 22 qualifying years now and 11 more to come, you reach State Pension age (67) on 20 May 2037 with 33 years: £241.30 × 33 ÷ 35 = £227.51 a week, about £11,830 a year in today’s money. Buying the two missing years with Class 3 would cost £1,913.60 and add £13.79 a week — repaid within about 2.7 years.
State Pension age by date of birth
| Born | State Pension age |
|---|---|
| 6 October 1954 – 5 April 1960 | 66 |
| 6 April 1960 – 5 March 1961 | 66 and 1 to 11 months (one month more per month of birth) |
| 6 March 1961 – 5 April 1977 | 67 |
| 6 April 1977 – 5 April 1978 | A date from 6 May 2044 to 6 March 2046 |
| 6 April 1978 or later | 68 (current law, under review) |
Deferring and filling gaps
If you do not claim at State Pension age your pension is deferred automatically. It grows by 1% for every 9 weeks — about 5.8% for a full year — but you lose the payments in the meantime, and it takes about 17 years of the higher pension to catch up. Deferral usually suits people who are still working or expect a long retirement.
Voluntary Class 3 contributions can usually fill gaps from the last six tax years. Check your record and forecast first: a gap is worth filling only if it raises your forecast. For tax on your pension and other income, see the UK take-home pay calculator; for planning horizons, the life expectancy calculator shows how long a pension typically runs.
UK State Pension Calculator FAQ
How much State Pension will I get?
The full new State Pension is £241.30 a week in 2026/27. This State Pension calculator for the UK multiplies it by your qualifying NI years ÷ 35, with at least 10 years needed.
How many NI years do I need for a full State Pension?
35 qualifying years for a record started after April 2016. If you were contracted out before 2016 you may need more — your GOV.UK forecast shows it.
What is my State Pension age?
It depends on your date of birth: 66 for people born before 6 April 1960, rising to 67 for those born from 6 March 1961, and 68 from 6 April 1978 under current law.
Is it worth paying voluntary National Insurance?
Often. A year of Class 3 costs £956.80 in 2026/27 and adds about £358 a year to the pension, if that year raises your forecast.
How much do I get if I defer my State Pension?
1% more for every 9 weeks you defer — about 5.8% after a year — paid for life.
Is the State Pension taxable?
Yes, it counts as taxable income, but it is paid without tax deducted. The full rate (£12,547.60 a year) is just under the £12,570 Personal Allowance.