Calculator
Salary sacrifice calculator
Model how pension salary exchange changes tax, National Insurance, student loan deductions, and real take-home pay.
Leave this on no student loan if you do not repay a student loan through payroll.
Choose the single plan that applies to this estimate. Plan 5 is supported. Combined undergraduate and postgraduate deductions are not yet modelled in the calculators.
Annual take-home change
£0
The change is usually smaller than the gross sacrifice because deductions fall too.
Income tax saved
£600
NI saved
£240
Effective net cost
£3,000
Gross sacrifice modelled: £3,000.
Take-home after sacrifice
£37,360
Monthly take-home after
£3,113
Student loan saved
£0
No student loan selected.
Taxable pay after
£47,000
What this means
Your take-home pay is broadly unchanged after the sacrifice.
The gross sacrifice is partly offset by about GBP 840 of deduction saving overall.
This view focuses on cash flow today and does not model investment growth or employer NI sharing.
FAQ
Short answers to the questions that usually matter once you have the first result.
Does salary sacrifice always save NI?
Usually for pension salary exchange, yes, although scheme design still matters.
Can salary sacrifice help near GBP 100,000?
It can reduce adjusted income and soften the personal allowance taper in this model.
Key assumptions and limitations
This models pension salary exchange as reducing taxable pay in an annual estimate. Scheme design, employer National Insurance sharing, and payroll timing can still affect the real-world outcome.
Next steps
Go deeper with one strong guide, one worked example, or one related calculator rather than juggling several weak next-step prompts.
Want to keep this result?
Keep it in your workspace if you want to compare it against another scenario, add notes on trade-offs, or come back before making a decision.
Related calculators
These calculators complement the one above. Use them to explore a different angle on the same pay decision.