Guide

Salary Sacrifice on Your Payslip: How to Check It Is Right

Written by James Whitfield · Last checked 18 October 2026 · Checked against 2026/27 HMRC rates.

A pension salary sacrifice looks different on a payslip from an ordinary pension deduction, and the difference is where your National Insurance saving comes from. This guide shows what each line should say, with a £40,000 example, and the mistakes worth spotting.

Quick answer

Under salary sacrifice your gross pay is reduced before tax and National Insurance, and the sacrificed amount is paid into your pension as an employer contribution1. So the payslip should show a lower taxable pay and NI figure and no employee pension deduction. On £40,000 with a 5% sacrifice, you should pay about £160 a year less NI than with a normal workplace pension, and your employer saves about £300.2

Key facts
  • Sacrifice reduces contractual pay, so tax and NI are worked out on the lower figure.1
  • The pension appears as an employer contribution, not an employee deduction.1
  • Employee NI saving: 8% of the sacrifice (2% above £50,270); employer saving: 15%.2
  • Your P60 shows the reduced pay, so do not claim tax relief on these contributions again.3
  • Cash pay after sacrifice must stay at or above the minimum wage (£12.71 an hour at 21+).4

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What should each line on the payslip show?

Payroll software labels these differently ("SS pension", "Salary exchange", "Pension sacrifice"), but the structure is the same:

  • Basic pay at your full contractual rate, followed by a negative sacrifice line, or simply a lower basic pay figure.
  • Taxable pay and NIable pay both equal to pay after the sacrifice.
  • No employee pension deduction in the deductions column.
  • An employer pension contribution line equal to the sacrifice plus your employer's own contribution (and any share of its NI saving it passes on).
  • Year-to-date figures that keep falling in step with the sacrifice each month.

Worked example: £40,000 salary, 5% pension

The same £2,000 pension contribution, made three ways, for an employee in England on tax code 1257L in 2026/27:

Salary sacrifice: pay after sacrifice£38,000.00
Income tax: 20% of (£38,000 − £12,570)£5,086.00
Employee NI: 8% of (£38,000 − £12,570)£2,034.40
Take-home with salary sacrifice£30,879.60
Net pay arrangement: tax on £38,000, NI on £40,000£5,086.00 + £2,194.40
Take-home with net pay£30,719.60
Relief at source: £1,600 paid, provider adds £400£5,486.00 + £2,194.40
Take-home with relief at source£30,719.60

Salary sacrifice leaves £160 more a year (£13.33 a month): 8% NI on the £2,000. Monthly, the sacrifice payslip shows taxable pay of about £3,166.67, income tax of about £424 and employee NI of about £170. The employer saves 15% of £2,000, £300 a year; some employers add part or all of that to your pension.2

Which mistakes should you look for?

  • NIable pay equal to full salary. That means the pension is being run as net pay, not sacrifice, and you are missing the NI saving.
  • An employee pension deduction as well as a sacrifice line. The contribution may be taken twice.
  • Claiming relief on your tax return for sacrifice contributions. They already had full relief through payroll.3
  • Hourly cash pay below the minimum wage after the sacrifice, which the employer must not allow.4
  • Statutory pay months (maternity, sick pay) handled oddly: check how your scheme treats sacrifice during leave.

If a line looks wrong, ask payroll for a breakdown of taxable pay, NIable pay and employer pension for the month before you raise it with HMRC. Use the salary sacrifice calculator to see what your own payslip should show.

Frequently asked questions

How does salary sacrifice show on a payslip?

As a reduction in gross pay (a negative sacrifice line or lower basic pay) before tax and NI, with the pension shown as an employer contribution. There should be no employee pension deduction.

Why is my NIable pay lower than my salary?

Because salary sacrifice reduces the pay that NI is charged on. That is where the 8% (or 2%) employee NI saving comes from.

How much NI does salary sacrifice save?

8% of the amount sacrificed for pay between £12,570 and £50,270, and 2% above that. On a £2,000 sacrifice from a £40,000 salary that is £160 a year. Your employer saves 15%, or £300.

Does my P60 show my salary before or after sacrifice?

After. The P60 shows pay after the sacrifice, which is why you should not claim tax relief on those contributions again on your tax return.

What if my payslip shows a pension deduction and a salary sacrifice?

Ask payroll to check. It may be two different things (for example an AVC and a main contribution), or the contribution may have been taken twice.

This guide is general information, not financial or tax advice. Payslip layouts differ between payroll providers.

Sources & references

Every headline figure in this guide is checked against the official HMRC and GOV.UK pages below and reflects the confirmed 2026/27 tax year. Each link opens the relevant official page in a new tab.

  1. Salary sacrifice and the effects on PAYE (HMRC) ↗ https://www.gov.uk/guidance/salary-sacrifice-and-the-effects-on-paye
  2. National Insurance rates and categories ↗ https://www.gov.uk/national-insurance-rates-letters
  3. Tax on your private pension contributions ↗ https://www.gov.uk/tax-on-your-private-pension
  4. National Minimum Wage and National Living Wage rates ↗ https://www.gov.uk/national-minimum-wage-rates
Verified against published UK government guidance.