What changes in your pay
With salary sacrifice, you agree to give up part of your gross salary in return for a non-cash benefit. For an EV scheme, that benefit is usually access to an electric car through your employer.
The sacrificed salary can reduce taxable pay and employee National Insurance. It can also reduce the income used for some student loan and postgraduate loan estimates.
What still needs checking
An electric company car can still create Benefit-in-Kind tax. The percentage for zero-emission cars is usually lower than for petrol or diesel cars, but it is not zero.
You should also check insurance, early termination rules, mileage limits, charger costs and whether the sacrifice affects pension, bonus, mortgage affordability or employer benefits.
How to model it
Run your normal salary first. Then add the monthly salary sacrifice amount and compare normal monthly take-home, annual deductions and any student loan changes.
Treat the result as an estimate. Payroll timing, employer scheme fees and company car tax can change the real amount paid into your bank account.