Salary Sacrifice for Small Employers: A Setup Guide

HMRC describes salary sacrifice as an agreed reduction in contractual cash pay, usually in return for a non-cash benefit. Start with a benefit staff can use and afford, then ask your existing provider and payroll team how it would work.

Choose the arrangement before estimating a saving

Arrangement	Employer starting check
Pension salary sacrifice	Provider support, contribution basis, existing employer funding and the treatment of any NI saving
Electric company car	Full employer package cost, car-benefit value, Class 1A NI and lease obligations
Cycle to Work	Exemption conditions, scheme structure, ownership arrangements and charges
Other benefits	Whether optional-remuneration rules create a taxable benefit despite the salary reduction

Salary sacrifice does not make every benefit tax-free. Keep the employee’s take-home change, the employer’s cost and any taxable benefit separate. For the employee explanation, use our workplace benefits guide.

Agree the change before the affected pay is earned. Record the new cash salary, the benefit or employer pension contribution, start date, and the rules for changing or ending the arrangement. Confirm which salary is used for ordinary pension funding, overtime, occupational pay and other salary-related benefits.

For a workplace pension, get the provider’s confirmation of how sacrificed amounts and existing employer contributions will be submitted. Agree whether the business retains an actual NI saving or adds some of it to pension funding; sharing it is a policy choice, not an automatic entitlement.

Automatic enrolment remains a separate duty. The Pensions Regulator says scheme membership cannot depend on agreeing to salary sacrifice. An eligible worker who declines it still needs the appropriate enrolment and alternative contribution method.

Weekly illustration, October 2026: an hourly paid worker aged 21 or over has 40 counted hours at £13, giving £520 contractual cash pay before PAYE and employee NI. There are no excluded payments, work costs or other adjustments in this example. The proposed pension salary sacrifice is £20 for the week.

Salary sacrifice and a weekly minimum-wage check

Check	Amount
Cash pay before sacrifice: 40 × £13	£520.00
Minimum cash pay: 40 × £12.71	£508.40
Cash after proposed £20 sacrifice	£500.00
Shortfall against this minimum-wage floor	£8.40
Maximum sacrifice on these assumptions	£11.60

The £20 arrangement cannot proceed on these facts. The applicable April 2026 rate for age 21 and over is £12.71. Younger workers and apprentices can have different rates. Use the actual work type, counted hours and pay reference period, including relevant travel or training, rather than an annual-salary shortcut.

Build the limit into every payroll run and reassess when hours, rates or deductions change. Ordinary employee pension contributions are a different arrangement from reducing contractual salary; ask payroll and the provider how staff who cannot sacrifice will continue contributing.

2026/27 annual planning illustration: a category A employee’s salary is £40,000. They exchange £2,400 a year, or £200 a month, for extra employer pension funding. Existing ordinary employer pension funding is held unchanged and omitted from both columns. Assume no employer NI reliefs and that Employment Allowance is unavailable or already fully used. There is no levy or administration charge in this example.

Employer annual cost before and after pension salary sacrifice

Item	Before	After
Contractual cash salary	£40,000.00	£37,600.00
Employer Class 1 NI: (salary − £5,000) × 15%	£5,250.00	£4,890.00
Extra employer pension contribution for the exchange	£0.00	£2,400.00
Total of these employer costs	£45,250.00	£44,890.00

The saving is £360 a year, or £30 a month on average. It comes from £2,400 × 15% lower employer NI. If the employer adds that whole saving to pension funding, the extra contribution becomes £2,760 and the employer total returns to £45,250, before any fees.

This uses HMRC’s annual 2026/27 secondary threshold and rate. Actual payroll uses the appropriate earnings period and rounding. These are selected employer costs before Corporation Tax, not an employee take-home calculation or a quote from a provider.

Eligible employers can offset up to £10,500 of employer Class 1 NI each tax year. Check eligibility and the allowance available across the business, not just this worker’s headline NI figure.

Check HMRC’s eligibility rules: a company whose only director is also the only employee liable for secondary Class 1 NI would not be able to claim.

If unused allowance would cover the full NI bill both before and after the pension exchange, there is no current-year NI cash saving from that exchange. In the illustration, £5,250 and £4,890 would both become £0 payable after the allowance, so salary plus the extra pension contribution would remain £40,000 in both cases.

If the allowance is partly used, calculate the actual difference in the business’s annual amount payable. Employer reliefs and provider fees also matter. Do not promise to fund a pension enhancement from an NI reduction the business will not realise.

Show original salary, new cash salary, the employer-funded benefit, pension contribution basis and an estimated take-home change. State what happens if hours fall, someone takes leave or the arrangement ends. Tell staff which team can explain their first payslip.

Use the calculator to illustrate employee take-home with the correct tax region, pension method and other settings. It does not calculate the employer’s Employment Allowance or total scheme cost. For the same pension funding through different methods, share the employee pension comparison.

A useful provider question is: “What will the employer pay, what will the employee receive, what payroll fields change, and which costs or responsibilities remain if the arrangement stops?” Keep a written answer with the agreed terms.

1. Check the signed variation, effective date and benefit or pension-provider acceptance.
2. Test cash salary, minimum-wage limits and the correct PAYE and NI treatment.
3. Confirm ordinary and sacrificed pension amounts reach the provider under the agreed contribution basis.
4. Reconcile employer NI actually payable and any shared saving.
5. Check the employee explanation, first payslip and process for later changes.

For pension salary sacrifice from 6 April 2029, the announced reform applies employee and employer Class 1 NI to salary-sacrificed pension contributions above £2,000 a tax year. Income Tax relief and the treatment of ordinary employer contributions are separate. The 2026/27 example above does not model that future rule; review ongoing arrangements as implementation guidance develops.

If the chosen benefit is a car, use our EV employer guide for Class 1A, reporting, VAT questions and leaver costs. A scheme’s start date should follow completed checks and provider readiness, rather than a generic promise about setup time.