State Pension Calculator
Understand how your UK State Pension has been calculated based on your National Insurance record
Your State Pension Estimate
How Has My State Pension Been Calculated? A Complete Guide
The State Pension is a regular payment from the government that most people can claim when they reach State Pension age. How much you receive depends on your National Insurance record, your age, and whether you were ever ‘contracted out’ of the Additional State Pension. This guide explains exactly how your State Pension is calculated and what factors affect your final amount.
1. The Two State Pension Systems
The UK has two State Pension systems that affect how your pension is calculated:
- Basic State Pension (pre-April 2016): For people who reached State Pension age before 6 April 2016. The maximum was £156.20 per week in 2023/24.
- New State Pension (post-April 2016): For people who reached State Pension age on or after 6 April 2016. The full rate is £221.20 per week in 2023/24.
Which system applies to you depends on when you were born:
| Date of Birth | State Pension Age | Pension System |
|---|---|---|
| Before 6 April 1951 (men) or 6 April 1953 (women) | 65 | Basic State Pension |
| 6 April 1951 to 5 April 1960 (men) or 6 April 1953 to 5 April 1960 (women) | Between 65 and 66 | Transition arrangements |
| 6 April 1960 to 5 April 1970 (men) or 6 April 1960 to 5 April 1975 (women) | 66 | New State Pension |
| 6 April 1970 to 5 April 1978 | 67 | New State Pension |
| 6 April 1978 or later | 68 | New State Pension |
2. How Qualifying Years Affect Your Pension
Your State Pension is based on your National Insurance (NI) record. You need a minimum number of ‘qualifying years’ to get any State Pension:
- Basic State Pension: You needed 30 qualifying years for the full amount (£156.20 in 2023/24). Each qualifying year gave you 1/30 of the full amount.
- New State Pension: You need 35 qualifying years for the full amount (£221.20 in 2023/24). You need at least 10 qualifying years to get any State Pension.
A qualifying year is a tax year (6 April to 5 April) where:
- You were working and paid NI contributions
- You were getting NI credits (e.g., while unemployed, sick, or a parent/carer)
- You were paying voluntary NI contributions
If you have gaps in your NI record, you might get less than the full amount. You can sometimes pay voluntary contributions to fill gaps.
3. Contracting Out and Its Impact
Between 1978 and 2016, some people were ‘contracted out’ of the Additional State Pension (SERPS or S2P). This means:
- You and your employer paid lower NI contributions
- You built up pension benefits in a private or workplace pension instead
- Your State Pension may be reduced as a result
If you were contracted out, your State Pension calculation will include a ‘contracted-out deduction’. This is more complex for people who reached State Pension age before April 2016.
4. Additional State Pension (SERPS/S2P)
Before April 2016, you could build up an Additional State Pension on top of the Basic State Pension through:
- SERPS (State Earnings-Related Pension Scheme): 1978 to 2002
- S2P (State Second Pension): 2002 to 2016
How much you get depends on:
- Your earnings between the lower and upper earnings limits
- How many years you paid into SERPS/S2P
- Whether you were contracted out for some years
For the New State Pension, any Additional State Pension you built up is converted into a starting amount, which may be higher or lower than the full new State Pension.
5. State Pension Age Changes
The State Pension age has been increasing and will continue to rise:
| Date of Birth | Current State Pension Age | Future Changes |
|---|---|---|
| Before 6 December 1953 (women) or 6 October 1954 (men) | 66 | No further increases |
| 6 December 1953 to 5 April 1960 (women) or 6 October 1954 to 5 March 1961 (men) | 66 | Increasing to 67 between 2026-2028 |
| 6 April 1960 to 5 April 1970 | 66 | Will be 67 |
| 6 April 1970 to 5 April 1978 | 67 | Will be 68 between 2044-2046 |
| 6 April 1978 or later | 68 | May increase further |
You can check your State Pension age using the official government calculator.
6. How to Check Your State Pension Forecast
You can get a personalised State Pension forecast that shows:
- How much State Pension you could get
- When you can get it
- How to increase it (if possible)
To get your forecast:
- Go to the Check your State Pension service
- Sign in with Government Gateway (you’ll need to create an account if you don’t have one)
- View your forecast and National Insurance record
Your forecast isn’t guaranteed – it’s based on your NI record up to the date you check it. Your actual amount could be different if your circumstances change.
7. How to Increase Your State Pension
If your forecast shows you won’t get the full State Pension, you might be able to increase it by:
- Paying voluntary NI contributions: You can usually pay for gaps from the past 6 years. In some cases, you can go back further.
- Deferring your State Pension: If you delay claiming, your pension increases by 1% for every 9 weeks you defer (about 5.8% per year).
- Continuing to work: If you haven’t reached State Pension age, you can keep building up qualifying years.
Before paying voluntary contributions, check if it’s worth it for your situation. The GOV.UK voluntary contributions page has more information.
8. Tax on State Pension
Your State Pension is taxable income, but it’s paid without any tax being deducted. How it affects your tax bill depends on your total income:
- If your State Pension is your only income, you probably won’t pay tax (the standard Personal Allowance is £12,570 in 2023/24)
- If you have other income (e.g., private pensions, earnings), you might pay tax on some of your State Pension
- The tax you pay depends on your total income and your tax code
HMRC will usually collect any tax due through your tax code if you have other income, or through Self Assessment if you complete a tax return.
9. Claiming Your State Pension
You won’t get your State Pension automatically – you need to claim it. You should get a letter no later than 2 months before you reach State Pension age, telling you what to do.
You can claim:
- Online (fastest method)
- By phone
- By post
You can usually backdate your claim by up to 12 months if you delay claiming after reaching State Pension age.
10. Common State Pension Questions
Q: Can I get State Pension if I’ve lived abroad?
A: Yes, but the rules depend on where you’ve lived and worked. You might need to claim the pension from the country where you now live. The UK has social security agreements with some countries that can help you qualify.
Q: What if I was self-employed?
A: Self-employed people pay Class 2 and Class 4 NI contributions, which count towards State Pension. Since April 2015, self-employed people with profits over £6,725 get NI credits automatically.
Q: Does State Pension increase each year?
A: Yes, it increases each year by the ‘triple lock’ – the highest of:
- Earnings growth (average percentage growth in wages)
- Price inflation (as measured by CPI)
- 2.5%
Q: Can I inherit my spouse’s State Pension?
A: You might inherit some of your late spouse’s or civil partner’s State Pension, depending on:
- When they reached State Pension age
- Whether you’ve remarried or formed a new civil partnership
- How much National Insurance they paid