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Salary Sacrifice Take-Home Pay Calculator

A salary sacrifice cuts your gross pay but also your Income Tax and NI bill. Your net cost is roughly 72% of the sacrifice (basic rate) or 58% (higher rate). This calculator shows the exact monthly and annual difference.

Compare take-home pay before and after a UK salary sacrifice. Supports pension, car/EV and other benefit types for the 2026/27 tax year.

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What this calculator does

Computes annual and monthly take-home before and after sacrifice, plus Income Tax and NI savings.

Who it is for

UK employees and HR teams who want a clear before/after picture.

How to use it

Enter gross salary, annual sacrifice, benefit type and optional taxable benefit (for car/EV), region, weekly hours and age band.

How the calculation works

Income Tax + Employee NI computed on salary, and again on salary-after-sacrifice plus any added taxable benefit. Differences show the savings.

Worked example

£40k salary, £2,000 pension sacrifice: take-home down ≈ £1,440/yr (~£120/month), Income Tax saving £400, NI saving £160.

Assumptions and limitations

  • 2026/27 only; EW/NI bands
  • Does not include student loan or auto-enrolment minima
  • Estimates only — not financial advice

Frequently asked questions

How much will my take-home change?

Net cost is roughly 72% of the sacrifice (basic rate) or 58% (higher rate).

Auto-enrolment minima?

Not modelled — enter your scheme's sacrifice amount directly.

Why no Scotland?

Scottish bands differ; not yet implemented.

What is a taxable benefit?

For car/EV the BIK amount (P11D × BIK%).

Bonuses?

Enter base salary only.

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Related guides

Sources and references

GOV.UK Income Tax rates 2026/27; GOV.UK NI thresholds 2026-2027; GOV.UK Salary sacrifice for employers.

Last updated

Last reviewed: 2026-05-21.