Pension Calculator
Estimate your UK pension pot at retirement. Calculate workplace pension growth with employer contributions, tax relief, and compound interest projections.
Pension Calculator
Auto-enrolment minimum: 5%
Auto-enrolment minimum: 3%
Typical assumption: 4-6% after fees. Past performance doesn't guarantee future results.
£440,500
Total pension pot
£110,125
Tax-free lump sum (25%)
£13,215
Annual income (4% rule)
£1,101
Monthly income (4% rule)
Pot Breakdown
Growth Milestones
| Age | Pension Pot | You Paid In | Growth |
|---|---|---|---|
| 35 | £37,598 | £29,000 | £8,598 |
| 40 | £66,599 | £43,000 | £23,599 |
| 45 | £103,818 | £57,000 | £46,818 |
| 50 | £151,583 | £71,000 | £80,583 |
| 55 | £212,883 | £85,000 | £127,883 |
| 60 | £291,553 | £99,000 | £192,553 |
| 65 | £392,514 | £113,000 | £279,514 |
| 67 | £440,500 | £118,600 | £321,900 |
State Pension (not included above)
The full new State Pension is £11,973/year (2026/27). With 35 qualifying NI years, your total retirement income would be approximately £25,188/year (£2,099/month) including State Pension.
This projection assumes a constant growth rate and doesn't account for inflation, salary increases, fees, or market volatility. Real returns may vary significantly. Past performance doesn't guarantee future results. Consider speaking to a regulated financial adviser for personalised pension advice.
How UK Pensions Actually Work
A pension is a long-term savings account with two massive advantages that no other savings vehicle can match: your employer puts money in, and the government gives you tax relief on every pound you contribute. Think of it like a savings account where for every £1 you put in, someone else adds 30p to 80p on top — depending on your tax band and employer match.
There are two main types. A defined contribution (DC) pension — which is what most people have now — builds up a pot that depends on how much you and your employer pay in and how investments perform. A defined benefit (DB) pension — increasingly rare outside the public sector — promises a guaranteed income based on your salary and years of service.
Since auto-enrolment started in 2012, every employer must offer a workplace pension. The minimum total contribution is 8% of qualifying earnings — 5% from you and 3% from your employer. But 8% is a floor, not a target. Most experts recommend 12-15% including employer contributions for a comfortable retirement.
Tax Relief: The Free Money Most People Don't Fully Use
| Tax Band | Income Range | Relief Rate | £100 Costs You | Effective Boost |
|---|---|---|---|---|
| Basic rate | £12,571–£50,270 | 20% | £80 | +25% |
| Higher rate | £50,271–£125,140 | 40% | £60 | +67% |
| Additional rate | Over £125,140 | 45% | £55 | +82% |
| Scottish starter | £12,571–£14,876 | 19% | £81 | +23% |
| Scottish basic | £14,877–£26,561 | 20% | £80 | +25% |
| Scottish higher | £43,663–£75,000 | 42% | £58 | +72% |
| Scottish top | Over £125,140 | 48% | £52 | +92% |
Basic rate relief is added automatically by your pension provider. Higher/additional rate relief must be claimed via self-assessment. Scottish taxpayers follow Scottish income tax bands but claim relief through the same mechanisms. 2026/27 rates shown.
How Much Do You Actually Need?
The Pensions and Lifetime Savings Association (PLSA) publishes retirement living standards that put real numbers on what retirement costs. These include the State Pension and assume you own your home outright.
| Standard | Single (£/year) | Couple (£/year) | Lifestyle |
|---|---|---|---|
| Minimum | £14,400 | £22,400 | Covers essentials — food, bills, and a UK holiday. No car. Limited eating out. Basic clothing budget. |
| Moderate | £31,300 | £43,100 | European holidays, a small car, eating out a few times a month, modest charitable giving, hobbies. |
| Comfortable | £43,100 | £59,000 | Long-haul holidays, a newer car, regular eating out, gym membership, beauty/personal care, home maintenance. |
Source: PLSA Retirement Living Standards 2024/25. Figures include State Pension and assume mortgage-free housing. If you rent in retirement, add £8,000-£15,000/year depending on location.
Auto-Enrolment: What You're Guaranteed
5%
Your minimum contribution
Of qualifying earnings (£6,240–£50,270). With 20% tax relief, £100 of contributions only costs you £80.
3%
Employer minimum contribution
Of qualifying earnings. This is free money — if you opt out, you lose it entirely. Many employers offer more if you contribute more.
8%
Total minimum contribution
Combined minimum since April 2019. On a £35,000 salary, that's £2,301/year going into your pension (£1,438 from you, £863 from your employer).
Common Pension Mistakes
Only contributing the auto-enrolment minimum
8% total (5% you + 3% employer) is designed as a safety net, not a target. On an average salary, it builds a pension pot of about £130,000 — enough for roughly £5,200/year on top of State Pension. That's below the PLSA 'minimum' standard for most people.
Not checking if your employer matches higher contributions
Many employers will match contributions above the minimum — some up to 10% or more. If your employer matches up to 6% and you only contribute 5%, you're leaving 1% of your salary (hundreds of pounds per year) on the table. Check your pension booklet or ask HR.
Cashing out small pension pots when changing jobs
Every time you cash out a pension pot, you pay income tax on 75% of it and lose decades of compound growth. A £5,000 pot left invested at 5% for 30 years becomes £21,600. Cashed out at the basic rate, you'd get £4,250 today. Transfer old pensions into your new workplace scheme or a SIPP instead.
Not claiming higher/additional rate tax relief
If you're a higher or additional rate taxpayer, your pension provider only claims basic rate (20%) relief automatically. You need to claim the extra 20-25% via your self-assessment tax return. On £10,000 of pension contributions, that's £2,000-£2,500 you're not claiming.
Assuming the State Pension covers everything
The full new State Pension is £11,973/year — about £230/week. That's below the PLSA 'minimum' retirement standard of £14,400. And you need 35 qualifying NI years to get the full amount. Check your State Pension forecast at gov.uk to see what you'll actually get.
Ignoring pension fees
A 1% annual management charge vs 0.25% doesn't sound like much, but over 30 years on a £200,000 pot, it's the difference between losing £52,000 and £13,000 to fees. Auto-enrolment pensions are capped at 0.75%, but older pensions can charge much more. Check yours.
The Cost of Waiting: Why Starting Early Matters
Compound growth is the single most powerful force in pension saving. The table below shows what happens when you save £200/month at 5% growth — the only difference is when you start.
| Start Age | Years Saving | You Pay In | Pot at 67 | Free Growth |
|---|---|---|---|---|
| 25 | 42 | £100,800 | £363,000 | £262,200 |
| 30 | 37 | £88,800 | £271,000 | £182,200 |
| 35 | 32 | £76,800 | £199,000 | £122,200 |
| 40 | 27 | £64,800 | £144,000 | £79,200 |
| 45 | 22 | £52,800 | £101,000 | £48,200 |
| 50 | 17 | £40,800 | £69,000 | £28,200 |
Based on £200/month at 5% annual growth (after fees), retiring at 67. Figures rounded. Does not include tax relief (which would increase totals further) or inflation adjustment. Starting at 25 instead of 35 costs £24,000 more in contributions but gives you £164,000 more in your pot.
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Sources
- Gov.uk — Workplace pensions and auto-enrolment 2026/27
- Gov.uk — Tax on your private pension contributions
- Gov.uk — State Pension rates 2026/27
- HMRC — Annual allowance and lifetime allowance
- The Pensions Regulator — Automatic enrolment contribution rates
- Pensions and Lifetime Savings Association — Retirement Living Standards 2024/25
- MoneyHelper — Pension calculator methodology
- FCA — Pension transfer and investment advice guidance
How to use this tool
Enter your age, salary, and current pension pot
Set your employee and employer contribution percentages
Choose your tax band and expected growth rate to see projections
Common uses
- Forecasting your pension pot at retirement
- Comparing the impact of increasing contributions
- Understanding how tax relief boosts your savings
- Checking if you're on track for a comfortable retirement
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