Salary Sacrifice Explained: How It Affects Your Payslip

Salary sacrifice is an arrangement where you agree to give up part of your gross salary in exchange for a non-cash benefit from your employer. The most common examples are additional pension contributions, cycle-to-work schemes, and electric car leases. Because the sacrifice reduces your gross pay, you pay less income tax and National Insurance on the reduced amount.

How salary sacrifice works

Under a salary sacrifice arrangement, your employment contract is formally amended to reduce your cash salary. In return, your employer provides the benefit directly. The key distinction is that the benefit is provided by your employer, not purchased by you from your net pay.

For example, if you earn £35,000 and sacrifice £3,000 into your pension, your contractual salary becomes £32,000. Tax and NI are calculated on £32,000, not £35,000.

Worked example

You earn £35,000 per year on tax code 1257L and agree to sacrifice £250 per month into your pension.

Without salary sacrifice:

Item	Monthly
Gross pay	£2,916.67
Income tax	£373.83
NI (8%)	£149.53
Pension (from net pay)	£250.00
Net pay	£2,143.31

With salary sacrifice:

Item	Monthly
Gross pay (after sacrifice)	£2,666.67
Income tax	£323.83
NI (8%)	£129.53
Pension (via sacrifice)	£0.00 (already deducted)
Net pay	£2,213.31

With salary sacrifice, your take-home pay is £70 per month higher, even though the same £250 goes into your pension. The saving comes from reduced tax (£50) and reduced NI (£20).

What benefits can be provided through salary sacrifice?

The most common salary sacrifice arrangements are:

• Pension contributions: the most popular use, saving both tax and NI
• Cycle-to-work scheme: you sacrifice salary to lease a bicycle and equipment
• Electric car scheme: you sacrifice salary to lease an ultra-low emission vehicle, with a very low benefit-in-kind charge
• Workplace nursery: employer-provided childcare
• Technology schemes: some employers offer salary sacrifice for laptops or phones

Not all benefits can be provided through salary sacrifice. HMRC restricts the arrangement to benefits that have specific tax exemptions or low benefit-in-kind rates.

How salary sacrifice appears on your payslip

On your payslip, salary sacrifice typically shows as a reduced gross pay figure. The sacrifice amount may appear as a separate line labelled "Salary sacrifice" or "Pension sacrifice" before the tax calculation.

Key things to check:

• Your gross pay should be lower than your contractual salary by the sacrifice amount
• Tax and NI should be calculated on the reduced gross figure
• The sacrifice amount should appear as a pension contribution or benefit allocation

If your payslip shows the sacrifice as a deduction after tax (rather than before), the arrangement may not be set up correctly, and you may not be receiving the full tax and NI saving.

Impact on other benefits and entitlements

Because salary sacrifice reduces your official salary, it can affect:

• Statutory Maternity Pay (SMP): calculated on your actual earnings, which are lower after sacrifice
• Mortgage applications: lenders may use your reduced salary figure
• Life insurance: if your employer provides "death in service" cover as a multiple of salary, the cover amount may be lower
• Student loan repayments: calculated on gross pay, so sacrifice reduces the repayment amount
• State benefits: if sacrifice takes your earnings below certain thresholds

Most employers include a clause that prevents sacrifice from reducing your pay below the National Minimum Wage.

Frequently Asked Questions

Can I reverse a salary sacrifice arrangement?

Most schemes have a fixed term (typically 12 months for cycle-to-work, 2-4 years for car schemes). You can usually only exit early if you experience a "life event" such as redundancy, pregnancy, or a significant change in financial circumstances. Check your scheme rules.

Does salary sacrifice affect my pension entitlement?

If your employer calculates pension contributions on your pre-sacrifice salary (known as "notional salary"), there is no impact. If they use your post-sacrifice salary, your pension contributions may be lower. Check with your HR department.

Is salary sacrifice the same as salary deduction?

No. A salary deduction is taken from your pay after tax and NI have been calculated. Salary sacrifice reduces your pay before tax and NI, which is why it produces a tax and NI saving.

Can I sacrifice my bonus into my pension?

Some employers allow bonus sacrifice, where you redirect part or all of your bonus into your pension before tax and NI are applied. This must be arranged before the bonus is paid.

Does salary sacrifice reduce my employer's costs?

Yes. Your employer saves on employer NI (15% from April 2025) on the sacrificed amount. Some employers pass part of this saving to you as an additional pension contribution.

Sources

• Salary sacrifice (gov.uk)
• Workplace pensions (gov.uk)
• Cycle to work scheme (gov.uk)