What your payslip is telling you

Contents

• 00:00 — Gross, net, and the gap
• 06:30 — The tax code, and how to check it
• 16:10 — National insurance
• 25:45 — Pension, before or after tax
• 35:20 — Salary sacrifice, twice
• 46:00 — Which lines you can actually change
• 54:40 — What to do this week

Transcript

Yara Mensah: I want you to read a payslip out loud, top to bottom, as though the person holding it has never looked at one.

Mei-Ling Chen: Then we start at the top with two numbers that are both called your salary by different people. Gross is what you are paid. Net is what arrives. Everything between them is the interesting part, and almost nobody reads it because it is printed in the smallest type on the page.

Yara Mensah: Where do you look first?

Mei-Ling Chen: The tax code. Always. It is a short string of characters, usually near your name rather than in the numbers, and it is the instruction that tells your employer how much tax to take. It is the line most often wrong and by far the easiest to fix.

Yara Mensah: Why is it wrong so often?

Mei-Ling Chen: Because it is generated from information that goes stale. You changed jobs, you had two jobs briefly, you had a benefit through work that ended, you were on the wrong one from the start and nobody noticed. The system is not malicious, it is just working from an old picture of your life.

Yara Mensah: And what happens if it's wrong?

Mei-Ling Chen: You pay too much or too little, every month, quietly. Too much is recoverable and people are often owed a surprising amount. Too little is worse, because it will be reclaimed later in a lump you were not expecting. Either way the fix is the same: query it, and it is a phone call, not a process.

Yara Mensah: Next line.

Mei-Ling Chen: National insurance. A separate deduction from income tax, taken on the same slip, that builds your entitlement to certain things later. People assume it is a second tax with a different name. It is not quite — it is closer to a subscription with a record attached to it, and the record matters.

Yara Mensah: Then pension.

Mei-Ling Chen: Your contribution, and it may be taken before tax is calculated or after, depending on the scheme. If it is before, you are not taxed on that money at all, which is why the deduction on the slip is often smaller than the amount that lands in the pension.

Yara Mensah: Stop there. That is the single most confusing sentence anyone hears about a pension. Say it again as though you are explaining it to my mother.

Mei-Ling Chen: You told your employer to put a hundred dollars into your pension. Your take-home only went down by about eighty, because the government was not going to see that hundred. So a hundred dollars arrived in the pension and eighty dollars left your pocket.

Yara Mensah: That is the entire show, that exchange. Do it once technically and once so a person can hold it.

Mei-Ling Chen: And I would note that the technical version was not wrong. It was accurate and useless, which is the specific failure this whole subject has.

Yara Mensah: Salary sacrifice. Longest turn, please, because it is the one thing on the slip that is a genuine choice.

Mei-Ling Chen: You agree with your employer to be paid a lower salary, and in exchange they provide something directly — usually pension, sometimes a bike, sometimes childcare or a car. The technical description is that you have given up salary for a benefit.

Yara Mensah: And the human description?

Mei-Ling Chen: You are moving money from the pile that gets taxed into a pile that does not, before it is ever yours. Same money, different door.

Yara Mensah: What's the catch?

Mei-Ling Chen: Your official salary is lower, and some things are calculated from your official salary — borrowing, occasionally certain benefits, sometimes life cover at work. That is not usually a problem but it is worth knowing before you sign, because nobody mentions it and it is the only part with a real trade-off in it.

Yara Mensah: There are usually lines nobody has mentioned yet. Student loan. Union. Season ticket. Give me the tour.

Mei-Ling Chen: A student loan repayment is not a debt payment in the ordinary sense — it is taken as a proportion of what you earn above a threshold, and it stops when you earn less. That single fact changes how people feel about it, because they have been treating it as a loan that could be attacked and it does not really behave like one.

Yara Mensah: Can you pay it off early?

Mei-Ling Chen: You can, and whether that is sensible depends on things I cannot know about you, so I will not tell you to. What I will say is that it is the one deduction where the instinct — clear the debt — is not automatically right, and it is worth understanding before acting.

Yara Mensah: What else is down there?

Mei-Ling Chen: Anything you signed up to through work: a bike, a season ticket loan, childcare, sometimes charitable giving. Some of these come out before tax and some after, and the slip usually does not make it obvious which. That is the difference between a benefit that is doing something for you and one that is simply a purchase your employer is administering.

Yara Mensah: How do you tell?

Mei-Ling Chen: Compare the gross figure at the top with your salary divided by twelve. If the gross is lower, something has been taken before tax was calculated — that is a sacrifice arrangement. If the gross matches and the deduction sits further down, it is coming out of money you had already been taxed on.

Yara Mensah: That is a genuinely useful test.

Mei-Ling Chen: It is thirty seconds and almost nobody does it. And the answer changes what your slip means: two people with identical take-home pay can be in quite different positions depending on which side of the tax line their deductions sit.

Yara Mensah: So which lines can somebody actually change?

Mei-Ling Chen: The tax code, if it is wrong. The pension contribution, upward or downward. Whether you use salary sacrifice, where it is offered. That is nearly the whole list. Everything else on that slip is arithmetic performed on decisions made elsewhere, and knowing which lines are decisions and which are consequences is most of what reading a payslip is for.

Yara Mensah: Last thing. What should somebody do if they think the code is wrong and the phone call is the bit they dread?

Mei-Ling Chen: Write down four things before you dial: the code, the employer it relates to, when it changed if you know, and what you think it should be and why. The call is short if you have those and long if you do not.

Yara Mensah: Will they be difficult?

Mei-Ling Chen: No. This is the most common thing they deal with, and they are not adjudicating anything — they are updating a record. People arrive braced for an argument about whether they deserve it. There is no argument. It is a correction.

Yara Mensah: And if money is owed back?

Mei-Ling Chen: It is usually returned by changing the code so that less is taken over the rest of the year, rather than as a payment. Which is worth knowing, because people expect a cheque, do not get one, and assume nothing happened.

Yara Mensah: This week.

Mei-Ling Chen: Find your most recent payslip and read the tax code. Not the numbers — the code. If you cannot tell whether it is right, that is not a failure, it is the normal condition, and it is a ten-minute phone call to find out.