Salary sacrifice calculator

See how salary sacrifice changes the real salary picture.

Use this focused route when pension or salary sacrifice may reduce taxable pay and change the balance between take-home pay and long-term value.

Calculator

Enter details. Read the result.

Tax saved

£500

Monthly net change

-£150

New monthly take-home

£3,143

Decision insights

Salary sacrifice is improving tax efficiency

This setup reduces tax drag and saves about £500 a year in Income Tax alone.

Take-home falls more slowly than the sacrificed amount

That is the point of salary sacrifice. Monthly take-home usually drops, but not by the full amount redirected, because taxable income is lower.

This is now a more strategic pay-structure decision

At higher salaries or stronger sacrifice levels, the trade-off becomes less about headline pay and more about long-term efficiency, pension growth, and threshold management.

Explore the £100k tax trap

Useful when sacrifice becomes a threshold-management decision as well as a pension one.

Compare salary outcomes

Judge whether raw salary growth or tax-efficient structure produces the better outcome.

Open the main calculator

Return to the broader salary flow with the main deduction dashboard.

2026/27

Current UK tax year

HMRC / GOV.UK

Reference sources

Estimate

Matches 2026/27 UK salary deduction reference rules with HMRC/GOV.UK guidance points.

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