Teenager's First Payslip Explained | Teen Financial Literacy UK

First Job UK • Teen Financial Literacy

They Earned £800.
They Got £623.
Now What Do You Say?

Your teenager holds up their first payslip, looks at the number in their bank account, looks back at the payslip, and asks you where the rest of it went. This is that conversation, sorted. Every line explained simply, with real numbers, no jargon.

Imagine the scene. Your teenager has just finished their first proper month at work. Maybe it is a Saturday job in a shop, shifts at a café, or evenings at a supermarket. They knew their hourly rate. They counted up their hours. They did the maths on their phone. The number they were expecting was £800.

Then the payslip arrives. And the number that actually lands in their account is nowhere near £800. It might be £623. It might be £710. Whatever it is, it is less than they expected and nobody warned them this was coming.

Here is everything you need to explain it properly.

First Things First — What Is a Payslip?

A payslip is a document your teenager gets every time they are paid. It shows exactly what they earned and exactly what was taken off before the money reached their account. Think of it like a receipt for their wages — it shows the full picture, not just the end result.

Most payslips these days are digital, sent by email or available through an app. Some employers still print them. Either way, the information on them is the same and understanding it takes about five minutes once someone explains what all the words mean.

Here is what a typical first payslip looks like for an 18-year-old working part-time:

Example Payslip — Age 18, Part-Time Job, Paid Monthly

Gross Pay This is the full amount earned — 70 hours at £11.44 an hour. This is the number before anything is taken off.

+£800.80

Income Tax A portion goes to the government as tax. How much depends on total yearly earnings and the tax code on the payslip.

-£46.16

National Insurance A separate contribution that funds the NHS and state pension. Only applies if earning over £1,048 a month — in this example earnings are under that so nothing is taken.

£0.00

Student Loan Not relevant yet. This only comes off after university and only once earning over £25,000 a year.

£0.00

Pension Automatic pension deductions only apply from age 22. Under 22s can choose to join voluntarily.

£0.00

TAKE HOME PAY

£754.64

That example is fairly straightforward. In real life it can get messier — wrong tax codes, extra deductions, more hours pushing earnings over thresholds. But if you understand the example above, everything else is just a variation of the same thing.

The Big One — Gross Pay vs Take Home Pay

This is the most important thing on the entire payslip and the thing that confuses absolutely everyone the first time they see it.

Gross pay is what your teenager earned. It is the number on their contract. It is the number they calculate in their head. It is not the number that goes into their bank account.

Take home pay (sometimes called net pay) is what actually arrives after everything has been taken off. This is the number to budget from. Not the gross. Never the gross.

💡

One of the most common money mistakes people make — at any age, at any salary — is planning their spending around their gross pay. Someone who earns £40,000 a year might assume they have around £3,333 a month to play with. Their actual take-home is closer to £2,580. That gap causes a lot of financial stress. Help your teenager build the right habit now and they will never fall into it.

Income Tax — Why It Is Not as Bad as It Sounds

Everyone in the UK gets a chunk of their earnings completely tax-free every year. Right now that amount is £12,570. Earn less than that in a year and you pay absolutely no income tax at all. Earn more than that and you pay 20% only on the bit above £12,570 — not on everything.

For a teenager in a part-time job earning around £800 a month, that is roughly £9,600 a year. Well under the £12,570 limit. So in theory they should barely be paying any income tax at all. Which brings us to the thing that catches almost every first-time worker out.

The Tax Code — That Mysterious Number on the Payslip

Somewhere on the payslip there will be a code. It will probably say something like 1257L. This is the tax code and it is basically a set of instructions your employer uses to work out how much tax to take off each month.

The number part — 1257 — directly represents your teenager’s tax-free allowance. 1257 means £12,570 tax-free. That is the amount they can earn in a year before paying a single penny of income tax. The L at the end just means it is a standard allowance. Simple as that.

The correct tax code for almost every teenager starting their first job is 1257L. If the payslip shows that code, everything is probably working as it should.

But here is where it goes wrong. If the tax code shows BR, W1, M1 or 0T instead of 1257L, that is an emergency tax code. It means HMRC does not have the right information yet and your teenager is being taxed at 20% on their entire pay with no tax-free allowance at all. They are paying more tax than they should be. This happens to a huge number of new workers and it does not fix itself. Your teenager needs to log in to their Personal Tax Account at gov.uk or call HMRC on 0300 200 3300 to sort it out and get back whatever they have overpaid.

National Insurance — The One That Funds the NHS

National Insurance is completely separate from Income Tax. It is its own thing. It funds the NHS, the state pension, and certain benefits. Think of it less like a tax and more like a contribution to a shared pot that everyone benefits from.

Your teenager only pays National Insurance if they earn more than £242 a week or £1,048 a month. Under those amounts, nothing is taken regardless of age. Over those amounts, 8% is charged on just the extra bit above the threshold — not on everything they earn.

So in our payslip example above, earnings of £800.80 are under the £1,048 monthly threshold. Nothing taken. A month with more hours that pushes earnings above £1,048 and it kicks in on just the excess.

Every single National Insurance contribution your teenager makes — even from a Saturday job at 17 — is building their state pension record. They need 35 qualifying years for a full state pension. They just started the clock.

— The bit nobody mentions at the beginning

That reframe matters. Instead of “they are taking money off me,” it becomes “I am building something for my future.” A small shift in thinking that makes a real difference to how your teenager feels about their deductions.

Student Loans — Not Now, But Sooner Than They Think

Student loan repayments will not appear on a part-time teenager’s payslip right now. They only start coming off once they have finished university and are earning more than £25,000 a year. Once they cross that line, 9% of everything above £25,000 is taken automatically every month.

To put that in real numbers — if your teenager graduates and gets a job paying £32,000 a year, their student loan repayment will be 9% of £7,000 (the bit above £25,000). That is £630 a year, or about £52.50 a month, taken before they see it.

Worth knowing now: A student loan is not like a normal loan. If it is not fully paid off within 40 years, the rest is wiped completely. Repayments only ever go up when earnings go up. If your teenager earns less than £25,000 they pay nothing at all that year. Understanding this early removes a huge amount of unnecessary stress about going to university.

The Tax Refund Most Teenagers Never Know to Claim

This is possibly the most useful thing in this entire post. And almost nobody talks about it.

The tax year runs from April to April. If your teenager only worked for part of it — a summer job, a Christmas temp position, a few months then a gap — their employer will have deducted tax each month as though they were going to be earning that amount for the full year. But they were not. Their total earnings for the whole year might be well under the £12,570 tax-free allowance.

That means any tax they paid was overpaid. And the government will give it back. But only if they ask for it. It will not come back automatically. It just sits there waiting to be claimed while your teenager assumes that is just how things work.

💰

A teenager who works a summer job, earns £3,000, gets £200 taken in tax via an emergency code, then goes off to university — their total earnings for that tax year were £3,000. Their tax-free allowance is £12,570. They owe zero tax. That £200 is theirs. They claim it back through their Personal Tax Account at gov.uk after the tax year ends in April. Most teenagers have absolutely no idea this is possible. Now yours does.

Five Minutes Tonight That Are Worth More Than You Think

You do not need a spreadsheet or a finance degree for this conversation. You just need the payslip, five minutes, and these questions in roughly this order:

The Payslip Chat — Keep It Simple

1

Ask them what they expected to get paid. Then show them what they actually got. Let them notice the gap themselves before you explain anything — curiosity is a better teacher than a lecture.

2

Find the tax code together. If it says 1257L they are on the right code — that means their first £12,570 earned this year is tax-free. If it says anything else, look it up at gov.uk straight away.

3

Add up everything they have earned since April. If they are under £12,570 for the year and have paid any tax at all, there is likely a refund waiting for them.

4

Tell them their National Insurance contributions are already building their state pension record. It sounds distant at 17 but it lands differently when you explain that the clock started today.

5

Ask them: if your take-home is £754 rather than £800, how does that change how you would plan the month? Then just listen. You have just taught them how to budget.

That is the whole conversation. Five questions. A payslip. Ten minutes at the kitchen table. And your teenager walks away knowing something genuinely useful about money that most adults have never properly understood either.

One last thing. Do not worry if you did not know all of this yourself before reading it. Nobody teaches this stuff. It is not in the school curriculum. Most parents are figuring it out alongside their kids. The fact that you are having the conversation at all puts your teenager ahead of the majority.

The Questions People Actually Google

Why is my teenager's take home pay less than their wage?

The government takes Income Tax and National Insurance directly from wages before your teenager receives anything. Their employer handles this automatically through a system called PAYE (Pay As You Earn). The amount taken depends on how much they earn and the tax code on their payslip.

What does tax code 1257L mean?

It means your teenager can earn £12,570 in a year completely tax-free before paying a single penny of income tax. The number 1257 directly represents that £12,570 allowance. It is the standard correct code for most first-job workers. If their payslip shows a different code they may be paying too much tax.

Can my teenager get a tax refund from their first job?

Yes — and most do not know to ask. If they only worked for part of the tax year and their total earnings were under £12,570, any tax taken was overpaid and can be claimed back. They do this through their Personal Tax Account at gov.uk after the tax year ends in April. It can add up to hundreds of pounds.

Do teenagers pay National Insurance on their wages?

Only if they earn more than £1,048 a month or £242 a week. Under those amounts nothing is taken regardless of age. Any NI that is paid also counts as qualifying years towards the state pension — something worth knowing from the very first payslip.

When do student loan repayments start coming off a payslip?

Not until after university and only once earnings are above £25,000 a year. After that, 9% of everything above £25,000 is taken automatically each month. On a £32,000 salary that works out at roughly £52 a month. It does not appear on any payslip before graduation.

Should a teenager join the workplace pension?

Automatic pension enrolment only applies from age 22, but younger workers can opt in voluntarily. If the employer adds matching contributions on top, it is genuinely worth considering even at 17 or 18 — that is free money being added to a pension pot that then grows over decades.

Financial Literacy • First Job UK • Teenagers and Money • Payslip Explained • Personal Finance

Disclaimer

The information on this blog is provided for general educational and informational purposes only. It does not constitute financial, tax, or legal advice. While every effort is made to ensure the information is accurate and up to date, tax rules, thresholds, and legislation can change. You should always check the latest figures at gov.uk or speak to a qualified financial adviser before making any decisions based on information found here.

This blog is not affiliated with HMRC, the government, or any financial institution. Any examples used are for illustration purposes only and may not reflect your individual circumstances.

© 2026 Your Blog Name. All rights reserved.