How much should you be paying in?

The auto-enrolment minimum is a floor, not a target. What the gap between them actually costs.

Auto-enrolment is the most successful piece of pensions policy in decades. It put millions of people into a pension who'd never have set one up themselves, and it did it by making the default action "yes" instead of "no".

It also created a widespread and expensive misunderstanding: that the minimum contribution is the recommended contribution.

What the minimum actually is

Under auto-enrolment, the total minimum contribution is 8% of qualifying earnings, of which your employer must pay at least 3%. The rest comes from you, with part of it made up by tax relief.

Two details in that sentence do a lot of damage.

"Qualifying earnings" isn't your salary. It's the slice of earnings between a lower and upper limit — currently roughly £6,240 to £50,270. So someone earning £30,000 isn't getting 8% of £30,000. They're getting 8% of about £23,760, which is closer to 6.3% of what they actually earn. The headline number overstates what's going in.

8% was a political number, not an actuarial one. It was set at a level employers and employees would accept without opting out en masse. It was never calculated to produce an adequate retirement.

What adequate actually looks like

There's no single right answer, but there are useful reference points.

The old rule of thumb was half your age as a percentage, from when you start. Begin at 24 and pay 12% throughout; begin at 40 and you need 20%. It's crude, and it makes the crucial point: starting late is expensive, and the cost rises fast.

A more useful approach is to work backwards from what you'll need. Establish the income you want, subtract the State Pension, and see what capital sum the remainder requires — the Retirement Readiness Calculator does exactly this, and Working out what you actually need covers how to arrive at the income figure.

Most people who do that exercise for the first time discover the gap is larger than they expected, and that the minimum contribution doesn't close it.

Do this first, before anything else

Find out whether your employer will match more than the minimum.

Many employers offer matching above the statutory floor — pay in 5% and they'll pay 5%, or pay 6% and they'll pay 8%. Arrangements vary enormously and plenty of people have no idea what theirs offers.

If your employer matches, every pound you contribute up to the match limit is doubled on the way in, before tax relief is even applied. There is no investment anywhere that reliably returns 100% immediately. Contributing below your employer's match limit is turning down part of your salary.

Ask HR what the matching arrangement is. It takes one email and it's the highest-value question in this article.

What tax relief does to the cost

Pension contributions attract tax relief at your marginal rate, which means the amount leaving your pocket is less than the amount arriving in your pension.

For a basic-rate taxpayer, £100 in your pension costs you £80. For a higher-rate taxpayer it costs £60, though the extra 20% usually has to be claimed through a tax return rather than arriving automatically. A great deal of higher-rate relief goes unclaimed every year simply because people don't realise they have to ask.

That relief changes the framing of the whole decision. Increasing your contribution by £100 a month doesn't cost you £100 a month. Payroll systems will usually show you the real net effect before you commit.

Why starting earlier matters so much

Compounding is the reason age-based rules of thumb look so unforgiving. A pound paid in at 25 has forty years to grow. The same pound at 45 has twenty. The early pound does dramatically more work, which is why increasing contributions in your twenties is worth more than an identical increase in your fifties, and why "I'll sort it later" is the most expensive sentence in personal finance.

None of which helps if you're already forty-five. If that's where you are, the answer isn't despair — it's that the contribution rate has to be higher, and that carry forward may let you use unused allowance from previous years. See Carry forward.

A practical way to increase

Big jumps are hard to sustain. Two approaches that work:

Increase with pay rises. When you get a rise, put a portion of it straight into the pension before you adjust to the higher take-home. You never experience it as a cut.

Increase by one percent a year. A single percentage point is small enough to barely register month to month, and repeated over several years it transforms the outcome.

Both work because they avoid the thing that stops people: the feeling of losing money you're already used to having.

The ceiling

There is an upper limit. The Annual Allowance caps what can go in each year with tax relief, and there are separate restrictions for high earners and for anyone who's already started drawing flexibly. Those are covered in Annual Allowance and tax relief.

For most people the limit isn't the constraint. What you can afford is.

This article is for general education only and isn't personal advice. The right contribution level depends on your income, your other commitments and when you want to stop working.