What auto enrolment actually means for you

Starting a new job comes with a lot of paperwork, and somewhere in that pile is usually a letter about a workplace pension. If you are aged between 22 and State Pension age and earn more than £10,000 a year, your employer has to put you into a pension scheme automatically. This is called auto enrolment, and it is not optional for them — it is the law. Most employers enrol you within three months of your start date, and plenty do it from day one.

Once you are in, three things happen every month. A small amount comes out of your pay, your employer adds more on top, and the government adds tax relief. All of it goes into a pension pot that belongs to you. The money is invested, and you cannot normally touch it until you are 55, rising to 57 in 2028. That feels like a long way off, but that is exactly why it works — your money has decades to grow.

You will get a letter or email confirming your enrolment. Do read it. It tells you which scheme you are in, how much is being deducted, and how to log in and see your pot.

How much actually comes out of your pay

The legal minimum is 8% of your qualifying earnings: at least 3% from your employer and 5% from you. Qualifying earnings is the slice of your salary between roughly £6,240 and £50,270 a year, so it is not the same as your full salary. If you earn £30,000, your 5% is calculated on the portion between those two figures, not the whole lot.

There is a nice detail here that surprises most people: the 5% from you includes the tax relief the government adds. So the amount leaving your bank account is slightly less than 5% of your qualifying earnings.

• Some employers use a different definition. They might base contributions on your full salary, which is more generous. Check your scheme booklet or ask HR.
• You can usually pay more. Most schemes let you increase your contribution at any time, and some employers will match it.
• You can opt out within a month of being enrolled, or later. But you would lose your employer's contribution and the tax relief, which is a serious amount of free money to walk away from.

Tax relief: the government top-up

Pension contributions get tax relief, which is a fancy way of saying the tax you would have paid goes into your pension instead. If you are a basic rate taxpayer, £80 from your pay becomes £100 in your pot. That is an instant 25% boost before your money is even invested.

How it arrives depends on your scheme type. With a relief at source scheme, your contribution is taken after tax and the provider claims the basic rate relief from HMRC and adds it. With a net pay scheme, your contribution comes out before tax is calculated, so you simply pay less tax each month. Both are fine — the end result is broadly the same for basic rate taxpayers.

If you are a higher or additional rate taxpayer, you can claim the extra relief through Self Assessment. It is worth doing, as it can be a meaningful sum.

What your employer puts in — and why it matters

Your employer must contribute at least 3% of your qualifying earnings, but many pay more, and some match whatever you put in up to a limit. This is genuinely free money. Turning it down is like refusing a pay rise.

Say you earn £30,000. On qualifying earnings, your 5% might be around £1,200 a year and your employer's 3% around £720. That is nearly £2,000 going into your future every year, and it costs you under £100 a month. If your employer offers matching, contributing more can be one of the best returns available to you.

Where does the money go once it leaves your pay?

Your contributions are invested in funds. If you do nothing, you will be placed in the scheme's default fund, designed to suit most members. Charges on default funds in qualifying schemes are capped at 0.75% a year, which keeps things reasonable.

You can usually switch to other funds if you prefer, and many schemes offer options based on how much risk you want. If investing feels overwhelming, the default is a sensible place to start — it is not a lazy choice. Most default funds also move your money gradually into lower-risk investments as you approach retirement, which protects you from a sudden market fall just before you need the cash.

Keeping track of your pots when you change jobs

Your pension pot is yours, wherever you go. When you leave an employer, the pot stays invested but your contributions stop. Nothing disappears.

• Keep the paperwork or login details for every scheme you join.
• Tell your providers when you move house so statements reach you.
• Check your pots once a year, even briefly. It takes ten minutes.
• If you are considering combining old pots, check first — you could lose valuable guarantees or benefits, and some schemes charge exit fees.

If you are unsure about anything, free impartial guidance is available from the government's pension guidance services, and it costs nothing. You do not need to be an expert to get this right. You just need to stay enrolled, keep an eye on it, and let time do the rest.