Pension auto enrolment how it works and who's eligible

Pension auto enrolment is a UK-wide legal requirement that means most employers must automatically enrol eligible staff into a workplace pension and contribute towards it, without the employee needing to apply. If you've started a new job and noticed a pension deduction on your payslip, or received a letter about being enrolled, this is what's happening.

Most employees aged 22 to State Pension age who earn above a set annual threshold are enrolled automatically. You can opt out if you want to, though it's worth understanding what you'd be giving up before you decide.

The rules have applied since 2012, phased in gradually until every eligible employer was covered by 2018. The idea is straightforward: many people wouldn't get around to setting up their own pension, so auto enrolment makes saving for retirement the default rather than something you have to remember to do.

Contributions typically come from three sources: you, your employer, and the government, in the form of tax relief added to your own contribution. The scheme applies across the whole of the UK, whether you work for a small business or a large company.

Whether you're automatically enrolled depends on your age and how much you earn. There are three categories of worker, plus a fourth group who fall outside the scheme altogether.

The earnings trigger and the qualifying earnings band (the lower and upper limits used to calculate contributions) are reviewed by the Department for Work and Pensions and can change each tax year. The figures in this guide are correct as of its last review date, so check the current thresholds on gov.uk or with The Pensions Regulator before relying on them for a specific decision.

If you're unsure whether you were eligible to be enrolled, or think your employer has got it wrong, MoneyHelper offers independent, impartial guidance at moneyhelper.org.uk or on 0800 138 7777.

Once you're auto enrolled, contributions are calculated as a percentage of your qualifying earnings, not your full salary. Qualifying earnings sit within a band with a lower and upper limit, both reviewed annually, so only the portion of your pay that falls inside that band counts towards the calculation.

These are minimums, not maximums. Some employers contribute more than the legal minimum, and some calculate contributions on your full salary rather than just the qualifying earnings band, both of which mean more money going into your pension. It's worth checking your employment contract or asking your HR team what basis your employer uses.

Contribution percentages and the qualifying earnings band are reviewed each tax year, so treat the figures above as a guide to the structure rather than a fixed number to rely on indefinitely. Always check the current rates on gov.uk before making decisions based on them.

You might expect a pension deduction from your very first payslip, but that's not always how it works. Employers are allowed to delay assessing a new employee for up to three months from their start date before enrolling them, known as a postponement period.

During postponement, you won't be automatically enrolled yet, though you can still choose to opt in voluntarily if you want contributions to start straight away. Once the postponement period ends, eligible employees are automatically enrolled and contributions begin.

This is why some new starters see no pension deduction for their first few months in a job. It's not a mistake or a sign that your employer isn't complying with the rules, it's simply the postponement period playing out.

Yes. You can opt out of auto enrolment within one month of being enrolled and get a full refund of anything already deducted. After that one-month window closes, you can still stop contributing, but contributions already made will usually stay invested in your pension rather than being refunded.

Your employer cannot encourage or pressure you to opt out. Doing so is against the law, and The Pensions Regulator can take enforcement action against employers who try it.

• To opt out, you contact your pension provider directly, not your employer, using the details in your enrolment letter
• Ask within one month of enrolment for a full refund of contributions made so far
• Opting out stops your contributions and your employer's, so think about what you'd be giving up before deciding

What happens if you opt out and then change your mind?

You can opt back in at any time by asking your employer, usually once every 12 months. Even if you don't ask, your employer must automatically re-enrol eligible staff who've previously opted out roughly every three years, regardless of whether you've asked to rejoin. So opting out isn't necessarily permanent, and it's not something you need to worry about locking yourself out of.

It's easy to assume your workplace pension and the State Pension are connected, but they're entirely separate. Auto enrolment builds up a private pension pot in your own name, on top of the State Pension, not instead of it.

Your State Pension entitlement depends on your National Insurance record, not on how much you or your employer pay into a workplace pension. Paying into a workplace pension through auto enrolment has no effect on the amount of State Pension you'll eventually receive.

The full new State Pension amount changes each April in line with the Triple Lock, so rather than quoting a figure that may already be out of date, it's worth checking how much the State Pension is currently worth or looking up the current amount on gov.uk.

Every time you start a new job, your new employer runs its own auto enrolment assessment. If you meet the eligibility criteria, you'll be enrolled into that employer's chosen scheme, which is often a different provider from your last job.

Over a working life, this adds up. It's common to end up with several small pension pots scattered across different providers, one from each employer you've had, rather than a single, easy-to-track pension.

None of these pots disappear, but they can be easy to lose track of, especially if you move house and a provider can't find your current address. If you'd rather bring them together into one plan, consolidating your pensions is worth considering, though it's not the right move for everyone; some older pensions include valuable benefits, such as enhanced annuity terms, or lower charges that are worth checking before you transfer anything.

If you're self-employed, auto enrolment doesn't apply to you at all, because there's no employer to do the enrolling. This catches some people out, especially if they've moved from employed work to running their own business and expect a pension to carry on building up automatically. It won't.

The alternative is to set up a personal pension or a self-invested personal pension (SIPP) independently. You still get tax relief on what you pay in, the same as an employee would, but you're responsible for setting it up, choosing a provider, and deciding how much to contribute. For a broader look at your options, see our pension advice guide.

Auto enrolment is well established now, but plenty of myths still circulate. Here are some of the most common ones we hear, and what's actually true.

Understanding your auto enrolment pension is a good first step, but it's rarely the end of the story. Once you know what's coming out of your pay and where it's going, the next question is usually whether it's enough, and what else is out there.

Money Saving Advisors can help with what comes after auto enrolment: checking whether your contributions are on track, bringing together old pension pots from previous jobs, or getting a wider pension advice review, including workplace pension advice specific to your employer's scheme. If you're comparing where to put a personal or self-employed pension, our guide to the best pension providers in the UK is a good next stop, and if later-life planning is on your mind, our guide to pension inheritance tax covers what happens to your pension pot after you die.

Access expert advice with no pressure to proceed. There's no assumption that having a workplace pension through auto enrolment means you don't need to think about your pension again.