Your First Job in 2026: Understanding Tax, NI and Your Payslip

Quick answer

Your first payslip will almost certainly be smaller than your salary divided by twelve, and that is normal. Several deductions come off gross pay before you see net (take-home) pay: income tax, National Insurance, possibly a student loan repayment, and a pension contribution. For 2026/27 the headline numbers are a £12,570 tax-free personal allowance, 20% basic-rate tax, 8% employee NI, 9% student loan above your plan threshold, and auto-enrolment pension contributions. The fastest way to see your real take-home is the

; this guide explains every line so nothing on your payslip is a mystery.

Reading your payslip line by line

A typical UK payslip has three zones: what you earned, what was taken off, and what you keep. The common lines are:

• Gross pay — your earnings before any deductions, for this period and often year-to-date.
• Income tax (PAYE) — tax deducted under Pay As You Earn.
• National Insurance — your NI contribution.
• Pension — your contribution to the workplace scheme.
• Student loan — repayment if your income is above the threshold.
• Net pay — what actually lands in your bank account.
• Tax code and NI number — usually printed in a corner; check these.

Always look at the year-to-date columns too, not just this month, because income tax is calculated across the whole year.

Income tax: PAYE and the personal allowance

In 2026/27 everyone gets a £12,570 personal allowance — income up to that is tax-free. Above it:

• 20% basic rate on income from £12,570 to £50,270.
• 40% higher rate from £50,270 to £125,140.
• 45% additional rate above £125,140.

Most people in their first job are firmly in the basic-rate band. PAYE spreads your allowance evenly across the year, so on a monthly salary you get one-twelfth of the allowance (about £1,047) tax-free each month, and pay 20% on the rest.

On a £24,000 salary, you pay 20% on roughly £11,430, which is about £2,286 of income tax a year, or £190 a month. Confirm the exact figure with the

.

National Insurance: the other deduction

National Insurance funds the State Pension and certain benefits. For employees in 2026/27:

• You pay 8% on earnings between the primary threshold and the upper earnings limit.
• You pay 2% on earnings above the upper limit.

A crucial quirk: unlike income tax, NI is calculated separately for each pay period and is not smoothed across the year. So if you have an unusually high month — say a bonus — you pay more NI that month and do not get it averaged out later. See your NI in isolation with the

.

Watch out for emergency tax codes

When you start your first job you may not have a P45 (the form from a previous employer), so your new employer might put you on an emergency tax code such as 1257L W1 or M1. This taxes each pay period in isolation and can lead to overpayment.

To avoid this, complete the starter checklist your employer gives you, ticking the box that says this is your first job since the start of the tax year. That tells HMRC to apply the full cumulative allowance. If you do overpay, it is refunded automatically through your wages once the correct code is applied — but it is worth checking your code rather than assuming.

Student loan repayments

If you went to university, you may have a student loan, but repayments only start once your income passes your plan's threshold for 2026/27:

• Plan 2: £29,385 a year.
• Plan 5: £25,000 a year (for most recent English students who started from 2023).

Above the threshold you repay 9% of the income over it, deducted automatically through payroll. Below the threshold you repay nothing — so on a £24,000 first salary, a Plan 2 graduate makes no repayments at all until they earn more. Repayments are based on income in each pay period, much like NI. Estimate yours with the

.

It is worth remembering that a student loan behaves more like a graduate contribution than a normal debt: repayments are income-linked, stop if your income falls, and are eventually written off, so most people focus on cash flow rather than rushing to clear it.

Your pension and auto-enrolment

If you are aged 22 or over and earn more than £10,000 a year, your employer must automatically enrol you into a workplace pension. Under the minimum auto-enrolment rules:

• You contribute a percentage of your qualifying earnings.
• Your employer contributes on top.
• The government adds tax relief.

The key point: your employer's contribution is free money you only get if you stay in the scheme, and the tax relief means part of your contribution is funded by tax you would otherwise have paid. For almost everyone starting out, staying enrolled is the right call, even though it slightly reduces your take-home pay. You can opt out, but you forfeit the employer top-up.

A full worked example

Aisha starts her first job on £24,000, Plan 2 student loan, auto-enrolled into the pension.

• Gross monthly pay: £2,000.
• Income tax: roughly £190 a month.
• National Insurance: roughly £75 a month.
• Student loan: £0 — she is below the £29,385 threshold.
• Pension (her share): a modest deduction, matched by her employer.
• Net pay: around £1,650 a month, with a slice quietly building in her pension.

The gap between £2,000 gross and £1,650 net is exactly what catches first-time earners out. Running the numbers in the

before payday means no nasty surprises.

Your P45, P60 and starter checklist

Three pieces of paperwork bookend your employment, and knowing what each does saves a lot of confusion:

• Starter checklist: completed when you start a job without a P45 (very common for a first job). It tells your new employer and HMRC your situation so the right tax code is applied from the outset. Ticking the correct statement — that this is your first job since 6 April and you have no other income — is what keeps you off an emergency code.
• P45: issued when you leave a job. It records your pay and tax so far that year, and you hand it to your next employer so they continue your tax correctly. Keep it safe.
• P60: issued by your employer after the tax year ends (by 31 May). It is the official summary of everything you earned and paid in tax that year. You need it for mortgage applications, tax refunds and proving income, so file every one.

National Insurance: more than just a deduction

It is easy to see National Insurance as just another tax, but the contributions you make build your entitlement to the State Pension and certain benefits. You generally need around 35 qualifying years of contributions for the full new State Pension, and your years start counting once you earn above the relevant threshold. So while NI reduces your take-home now, it is also quietly building a future entitlement — which is one reason gaps in your record (from very low earnings or time abroad) can matter decades later. Your NI number, printed on your payslip, is your unique reference; keep it secure and never share it casually, as it is a target for fraud.

Should you pay into the pension? A closer look

When auto-enrolment kicks in, your take-home pay drops slightly, which can feel painful on a first salary. But the maths is compelling. For every £1 you contribute from taxed income, you typically get tax relief and an employer contribution on top — frequently turning your £1 into well over £2 in the pension. Walking away from that is, in effect, turning down a pay rise. Unless you are in genuine financial difficulty or clearing high-interest debt, staying enrolled is almost always the right long-term decision. The earlier you start, the more decades of compound growth work in your favour — a point the

can help you weigh against your immediate budget.

Budgeting on your first salary

The leap from "salary" to "what actually arrives" is the number-one budgeting mistake new earners make. A sensible approach:

1. Start from net pay, not gross — the figure that actually hits your account.
2. Cover essentials first — rent, bills, transport, food.
3. Build a small emergency buffer before discretionary spending.
4. Treat the pension as already spent — it leaves before you see it, so do not count it as available.
5. Watch lifestyle creep as pay rises; a habit of saving a slice of every increase pays off enormously over time.

Part-year working and tax refunds

Many first jobs start partway through the tax year — for example a graduate starting in the autumn, or a student working only over the summer. Because the personal allowance is spread evenly across the year, starting late often means you have unused allowance from the earlier months. Under a cumulative tax code, PAYE may give you a chunk of that allowance at once, so your first few payslips can show unexpectedly little tax. If you only work for part of the year and your total earnings stay under £12,570, you may have paid tax that you are owed back — students who work only in summer frequently overpay this way. You can check and reclaim through your Personal Tax Account; do not assume HMRC will always refund automatically if you stop working mid-year.

Common first-payslip questions

• "Why is my net pay less than salary ÷ 12?" Because tax, NI and possibly pension and student loan come off first. This is normal.
• "My tax code is 1257L W1 — is that wrong?" It is an emergency code; complete your starter checklist or hand over your P45 to move to a cumulative basis.
• "I earn under £12,570, why am I paying tax?" Likely an emergency code or a part-year quirk; it usually corrects, and you can reclaim any overpayment.
• "Should I opt out of the pension to get more cash?" Almost never — you would forfeit free employer money and tax relief.

First-job checklist

• Complete the starter checklist to avoid emergency tax.
• Check your tax code is 1257L (or understand why it differs).
• Confirm your NI number is on your payslip.
• Decide on your pension — staying in is usually best.
• Know your student loan plan and threshold.
• Keep every payslip and your P60 for your records.

The bottom line

Your first payslip in 2026 will show gross pay reduced by income tax, National Insurance, possibly a pension contribution, and a student loan repayment only if you earn over your threshold. None of it is a mystery once you know the £12,570 allowance, 20% basic rate, 8% NI and 9% student loan rules. The two early traps are emergency tax codes and assuming your take-home equals your salary divided by twelve — so check your code and run your figures through the

before you budget.