Your pension grows through three powerful forces: your contributions, employer contributions, and tax relief — all compounding together over decades. See what yours could be worth.
A workplace pension is one of the most powerful wealth-building tools available in the UK, and it works through three compounding forces working simultaneously:
1. Your contributions. Money deducted from your salary before (or after) tax. Under auto-enrolment, the minimum employee contribution is 5% of qualifying earnings (earnings between £6,240 and £50,270 for 2025/26).
2. Employer contributions. Your employer must contribute at least 3% of your qualifying earnings. Many employers offer more generous matching — some will match your contribution pound for pound up to 5%, 6%, or even higher. This is effectively free money added to your pension.
3. Tax relief. The government tops up your pension by refunding the income tax you would have paid on your contributions. A basic-rate taxpayer gets 20% relief (£80 from you becomes £100 in the pension). Higher-rate taxpayers get 40% relief (effectively paying just £60 for every £100 contributed). This tax relief is then invested and compounds alongside everything else.
Basic rate (20%)
£80 = £100
You pay £80, HMRC adds £20
Higher rate (40%)
£60 = £100
£80 in + £20 reclaimed via tax return
Additional rate (45%)
£55 = £100
Maximum tax relief efficiency
Tax relief is applied automatically for workplace pensions (net pay or relief at source). Higher and additional-rate taxpayers must claim extra relief through their self-assessment tax return unless their employer uses a net pay arrangement.
Your annual pension statement shows key figures you should understand. The current fund value is how much your pension pot is worth today. The projected retirement value estimates what it could be worth at your chosen retirement age, usually based on assumed growth rates (typically 2%, 5%, and 8% scenarios).
Pay attention to the total contributions (yours + employer's) and compare them to the fund value. If your fund value is significantly higher than total contributions, compound growth is already working in your favour. If they are similar or the fund value is lower, check whether you are in an appropriate investment fund — default pension funds can sometimes be too conservative for younger savers.
Also check the charges. Workplace pension charges are capped at 0.75% for default funds, but some older schemes have higher charges. If your charges are above 0.5%, it may be worth asking your employer about alternatives or considering a SIPP transfer (after checking for any valuable guarantees you might lose).
| Salary | Total % | Annual in | After 20yr (5%) | After 30yr (7%) |
|---|---|---|---|---|
| £30,000 | 8% | £1,900 | ~£66,000 | ~£196,000 |
| £30,000 | 12% | £2,850 | ~£99,000 | ~£294,000 |
| £40,000 | 8% | £2,700 | ~£94,000 | ~£278,000 |
| £40,000 | 12% | £4,050 | ~£141,000 | ~£418,000 |
| £50,000 | 8% | £3,520 | ~£122,000 | ~£363,000 |
| £50,000 | 15% | £6,600 | ~£229,000 | ~£681,000 |
| £60,000 | 12% | £6,450 | ~£224,000 | ~£665,000 |
| £60,000 | 15% | £8,064 | ~£280,000 | ~£831,000 |
8% is the auto-enrolment minimum on qualifying earnings. Higher percentages include increased employee and/or employer contributions. Projections assume constant salary and returns (5% conservative, 7% moderate). Actual returns will vary. Annual amounts shown are total contributions (employee + employer) on qualifying earnings.
The auto-enrolment minimum of 8% (5% employee + 3% employer) applies to qualifying earnings only — the band between £6,240 and £50,270 (2025/26). This means on a £30,000 salary, the 8% is applied to just £23,760 of your earnings, not the full £30,000. The actual amount going into your pension is roughly £1,900 per year.
At 6% average returns over 35 years (age 22 to 57), this builds a pot of roughly £210,000. Using the 4% withdrawal rule, that provides about £8,400 per year — well below even a minimum retirement income. Add the full state pension (£11,502/year from age 67), and total retirement income is still only around £20,000. For a moderate retirement, pension experts typically recommend a total contribution rate of 12-15%.
The good news is that increasing your contribution by even a few percentage points makes an enormous difference over decades. Going from 8% to 12% total contributions increases your projected pot by roughly 50%. Going from 8% to 15% could more than double it. Many employers will match additional contributions — check your scheme details, because you may be leaving significant free money on the table.
Salary sacrifice is an arrangement where you agree to reduce your gross salary, and your employer pays the difference directly into your pension. Because the money never reaches you as salary, neither you nor your employer pay National Insurance on it.
For a basic-rate taxpayer earning £35,000 who sacrifices £200/month into their pension: normally, £200 of gross salary would lose £24 in income tax and £16 in employee NICs, leaving £160 take-home. With salary sacrifice, the full £200 goes into the pension, and the take-home "cost" is just £160 — but your pension gets £200 instead of the £160 net contribution. Some employers also pass on their 13.8% employer NIC saving, making it even more efficient.
Salary sacrifice does reduce your official salary, which can affect mortgage applications and some benefits. However, for pension saving, it is generally the most tax-efficient method available. Ask your HR or payroll department if your employer offers salary sacrifice for pension contributions.
The full new state pension is £11,502 per year (2025/26), and it is adjusted each year by the triple lock (the highest of inflation, average earnings growth, or 2.5%). To qualify for the full amount, you need 35 qualifying years of National Insurance contributions. You need at least 10 years for any state pension at all.
Check your state pension forecast at gov.uk. If you have gaps in your NI record (from time spent abroad, self-employment, or not working), you can often buy additional qualifying years through voluntary NI contributions. At the current rate of roughly £900 per year to fill a gap, this can be excellent value — each qualifying year adds roughly £329/year to your state pension for life.
Project your pension growth with our compound interest calculator.
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