A pension is just a savings account with two things bolted on: tax relief, and rules about when you can touch the money. That's it. The word makes it sound more complicated than it is, mostly because of how many different types exist.
The actual question that matters isn't "what is a pension" — it's which pension are you already in, and are you missing free money by not paying enough into it?
Why pensions get free money attached
When you pay into a pension, the government adds tax relief: effectively refunding the tax you'd have paid on that money. For a basic-rate taxpayer, £80 you put in becomes £100 in the pension. Higher-rate taxpayers can claim back more through their tax return.
If your employer also contributes, which by law they must, for most employees, that's a second layer of free money on top. Turning down that contribution by opting out is turning down part of your salary.
The three pension types you'll actually meet
Workplace pension (auto-enrolment). If you're employed and over 22, you're likely automatically enrolled into one of these. You contribute a percentage of salary, your employer adds more, and the government tops it up with tax relief. This is the default most people are already in, often without realising exactly how it works.
SIPP (Self-Invested Personal Pension). A pension you control directly, choosing your own investments, usually opened alongside or instead of a workplace scheme, common for the self-employed, or people who want more say over where the money goes.
State Pension. Not a savings pot at all: it's a government payment based on your National Insurance record, paid from State Pension age. It sits underneath whatever else you build up; it's not a replacement for the other two.
Common pension myths, actually addressed
"Auto-enrolment is optional, so I'll opt out and save the money myself."
You can opt out, but you're not just giving up your own contribution, you're giving up your employer's contribution and the government's tax relief too. Very few savings accounts match that.
"I'm too young for a pension to matter."
The earlier money goes in, the longer it has to grow before you need it: time matters more than the amount for a pension, because of how compounding works over decades rather than years.
"I'll lose track of pensions if I change jobs."
This is a real and common problem: old workplace pensions get left behind with each job change. It's solvable (tracking down and potentially combining them), but it doesn't sort itself out automatically.
A simple way to actually check your pension
- Find out what you're currently contributing: check a recent payslip for the pension deduction, and see what your employer adds on top.
- Check you're not opted out by accident, or from a previous job you've since forgotten about.
- Track down old workplace pensions from previous employers. The government's free pension tracing service can help locate them.
- Check your State Pension forecast online, using your National Insurance record, to see what you're on course for separately from any workplace pot.
Compare pension providers
See how workplace and personal pension providers stack up, based on charges and fund choice.
Want the actual numbers? Try our Pension Calculator — see how your pot could grow by retirement, including your employer's contribution.
This explainer covers how pensions work in general. It isn't personalised financial advice — for guidance specific to your situation, a regulated financial adviser can help.