Understanding Your UK Payslip. Your payslip tells you how much you’ve been paid but do you actually understand every line on it? For many employees, deductions like National Insurance, pension contributions, and student loan repayments appear as numbers without much explanation. This guide breaks down every component of a UK payslip in plain English, so you know exactly where your money goes each month.
What Every UK Payslip Must Include
UK law (the Employment Rights Act 1996) requires your employer to provide a written payslip containing:
- Gross pay (earnings before deductions)
- Net pay (take-home pay after deductions)
- Any variable deductions (tax, NI, student loan)
- Fixed deductions (pension, union fees shown as totals)
- Hours worked if pay varies by hours
Your employer must provide this on or before your pay date. Use our salary calculator to check whether your take-home pay matches what you’d expect based on your gross salary.
Understanding Each Payslip Deduction
Income Tax (PAYE)
Income Tax is deducted at source through PAYE (Pay As You Earn). The amount depends on your tax code and income band. Your tax code (shown on your payslip typically something like 1257L) tells your employer how much of your income is tax-free. The standard code 1257L means you get the full personal allowance of £12,570 tax-free.
| Tax Band | Income Range (2025/26) | Rate | What You Pay |
|---|---|---|---|
| Personal Allowance | Up to £12,570 | 0% | Nothing |
| Basic Rate | £12,571–£50,270 | 20% | 20p per £1 |
| Higher Rate | £50,271–£125,140 | 40% | 40p per £1 |
| Additional Rate | Over £125,140 | 45% | 45p per £1 |
National Insurance (NI)
National Insurance is a separate tax from Income Tax, used to fund state pension, NHS, and benefits. Employee NI rates for 2025/26:
- 12% on earnings between £12,570–£50,270
- 2% on earnings above £50,270
NI was reduced from 10% to 8% (basic rate) in April 2024, saving the average worker approximately £450/year. Note: your employer also pays NI on your behalf (currently 13.8%) this cost doesn’t appear on your payslip but affects your total employment cost.
Pension Contributions
Under auto-enrolment (for employees aged 22–66 earning over £10,000/year), you’re automatically enrolled in a workplace pension. The minimum contribution is 5% of your qualifying earnings from the employee, with a minimum of 3% from your employer. Many employers match higher contributions always contribute enough to get the maximum employer match, as this is essentially free money.
Student Loan Repayments
Student loan repayments are deducted automatically via PAYE once you earn above the repayment threshold for your plan:
| Plan | Repayment Threshold (2025) | Repayment Rate | Who It Applies To |
|---|---|---|---|
| Plan 1 | £24,990/year | 9% above threshold | Pre-2012 English/Welsh students |
| Plan 2 | £27,295/year | 9% above threshold | Post-2012 English/Welsh students |
| Plan 4 | £31,395/year | 9% above threshold | Scottish students |
| Plan 5 | £25,000/year | 9% above threshold | Students from 2023 onwards |
| Postgraduate | £21,000/year | 6% above threshold | Postgraduate loan holders |
Other Common Deductions
- Salary sacrifice Voluntary reduction of gross pay in exchange for benefits (additional pension, cycle to work, childcare vouchers). Reduces NI and tax liability
- Union dues If you’re a union member, dues may be deducted directly
- Benefits in kind If you receive company car, private health insurance, or other taxable benefits, these may affect your tax code rather than appearing as a direct deduction
A Real Payslip Example
| Line Item | Amount | Notes |
|---|---|---|
| Gross Pay | £3,250.00 | £39,000/year ÷ 12 |
| Income Tax (PAYE) | −£437.80 | Based on 1257L code |
| National Insurance | −£228.38 | 8% on qualifying earnings |
| Pension (5% employee) | −£136.54 | Of qualifying earnings |
| Student Loan (Plan 2) | −£88.43 | 9% of earnings above £27,295 |
| Net Pay | £2,358.85 | Take-home after all deductions |
On a £39,000 salary, this employee takes home £2,358.85/month. The gross-to-net difference is £891.15/month or £10,693 per year in deductions. Understanding each line helps you check your payslip for errors and plan your finances accurately.
Payslip FAQ
What is a tax code and how do I check it’s correct?
Your tax code tells your employer how much of your income is tax-free. The most common code is 1257L (full personal allowance). If yours is different, it may mean you have benefits in kind, multiple jobs, or HMRC thinks you owe unpaid tax. Check your code at gov.uk/check-income-tax or call HMRC if it seems wrong an incorrect code can cost you hundreds per year.
Why is my first payslip tax different from normal?
If your employer doesn’t have your P45 from your previous job, they may use an emergency tax code (1257L W1/M1), which taxes each pay period independently rather than cumulatively. This usually results in overpaying tax initially which HMRC will refund automatically once your records are updated.
Can I reduce the tax I pay legally?
Yes legitimately. Salary sacrifice schemes (additional pension, cycle to work, EV car scheme) reduce your gross pay and therefore your NI and income tax. Claiming legitimate work expenses, contributing to a SIPP (self-invested personal pension), and claiming marriage allowance (if eligible) can all reduce your annual tax bill.
How do I calculate my monthly take-home pay?
Use our salary calculator to estimate take-home pay at any gross salary level. For a fully accurate figure including pension, student loans, and benefits in kind, use HMRC’s official tax calculator at gov.uk/estimate-income-tax.
Related Calculators
- Salary Calculator Estimate take-home pay at any salary level
- Percentage Calculator Work out tax and deduction percentages
- Savings Calculator Plan your savings from your net pay
- Loan Calculator Check loan affordability based on your take-home pay