SALARY SACRIFICE VS STANDARD PENSION CALCULATOR

Understanding Salary Sacrifice Pension for 2026/27

There are three ways UK employees typically contribute to a pension, and the difference between them is often worth thousands of pounds per year — yet HR departments rarely explain it clearly. The three methods are Relief at Source (RAS), Net Pay Arrangement, and Salary Sacrifice. Choosing the right one matters, and for most eligible employees, salary sacrifice is the clear winner.

Under Relief at Source, you contribute from your take-home pay after tax and National Insurance. The pension provider then claims back 20% basic-rate tax relief from HMRC and adds it to your pension. Higher and additional-rate taxpayers must claim the extra 20% or 25% relief via self-assessment — which many forget to do, losing hundreds of pounds annually. Net Pay Arrangement takes contributions from your gross pay before income tax, giving automatic relief at your marginal rate but with no NI saving.

Salary Sacrifice is the most powerful: you agree to a reduced gross salary in exchange for your employer paying the difference directly into your pension. Because the sacrificed salary never existed for tax or NI purposes, you save income tax AND employee NI (8%/2%) AND your employer saves their 15% NI — a portion of which many employers pass back to you as an enhanced pension contribution. For someone earning £60,000 contributing £5,000 annually, the combined saving can exceed £2,000 per year versus RAS. The salary sacrifice calculator above models all three methods side-by-side with correct 2026/27 UK tax and NI rules, including Scotland’s six-band income tax system.

Key Figures for the 2026/27 Tax Year

• Basic rate tax relief (all methods): 20%
• Higher rate top-up (RAS via self-assessment): 20% additional
• Additional rate top-up: 25% additional
• Employee NI main rate: 8% (between £12,570 and £50,270)
• Employee NI upper rate: 2% (above £50,270)
• Employer NI rate: 15% above £5,000
• Maximum combined saving (40% taxpayer): Income tax 40% + NI 2% + Employer NI 15% = 57%
• Scotland tax bands: 19% / 20% / 21% / 42% / 45% / 48%
• Not available below NMW: Cannot sacrifice below the National Minimum Wage

How to Use the Salary Sacrifice Pension Calculator

1. Enter your current annual gross salary before any pension contribution.
2. Enter the total pension contribution you want to make (employee + employer).
3. Select your tax residence — rest of UK (rUK) or Scotland.
4. The calculator compares Relief at Source, Net Pay Arrangement, and Salary Sacrifice side-by-side.
5. Review the take-home pay and total pension contribution under each method.
6. Note the "winner" — usually Salary Sacrifice when eligible, with the savings often going into the pension as extra contribution.

Frequently Asked Questions

What is salary sacrifice and why is it better than normal pension contributions?

Salary sacrifice is an arrangement where you agree to a lower gross salary and your employer pays the difference into your pension. Because the sacrificed amount never counts as earnings, you save income tax AND employee NI (which you don't save with RAS or Net Pay). Employers save their 15% NI too, and good employers pass some or all of this back into your pension — making total savings of 30-57% possible.

Is salary sacrifice available to everyone?

No. Your employer must offer salary sacrifice as a scheme — it's not automatic. Also, you cannot sacrifice salary below the National Minimum Wage, which limits high-contribution sacrifices for lower earners. Single-director companies, sole traders, and the self-employed cannot use salary sacrifice for their own contributions.

How does Relief at Source (RAS) work for higher-rate taxpayers?

RAS automatically applies 20% basic-rate relief at source, but if you pay tax at 40% or 45%, you must claim the extra 20% or 25% via self-assessment or by writing to HMRC. Many higher-rate taxpayers forget this step and lose significant relief. Net Pay Arrangement and Salary Sacrifice give full marginal-rate relief automatically — one reason they're often preferred.

Does salary sacrifice reduce my State Pension entitlement?

Potentially, if your sacrificed salary takes you below the Primary Threshold of £12,570 and you're not already qualifying for National Insurance credits through other means. For most employees above £12,570, salary sacrifice has no impact on State Pension entitlement because credits still accrue on the non-sacrificed earnings.

Can salary sacrifice affect my mortgage application?

Possibly. Some mortgage lenders look at your reduced gross salary after sacrifice, which could lower your borrowing capacity. Others add the sacrificed pension contribution back to your income for affordability. Check with your lender or broker before making large sacrifice commitments, especially if you're planning to buy in the next 12 months.

What happens to my salary sacrifice if I leave the company?

The salary sacrifice arrangement ends when you leave employment. Your reduced gross salary no longer applies — your new employer will pay you at their offered rate. Any pension contributions made via sacrifice during your employment remain in your pension pot and can be transferred to a new pension with your new employer or to a personal/SIPP.

Related Calculators

• Pension Annual Allowance Calculator — check the £60k limit before making large sacrifice contributions
• UK Take-Home Pay Calculator — see the full salary breakdown with or without sacrifice
• ISA vs SIPP Calculator — compare wrapper choices for retirement
• Employer NI Calculator — see the employer side — sacrifice saves them 15%

Official Sources

• Salary sacrifice and PAYE (HMRC guidance)
• Pension tax relief (gov.uk)
• MoneyHelper guide to salary sacrifice pensions

Last reviewed April 2026. Figures and rules apply to the 2026/27 UK tax year. This tool is for guidance only and does not constitute financial advice.