How Much Tax Benefit On Electric Vehicles Meaning. Hm treasury calculates how much benefit they receive, based on a percentage (bik rate) of the car’s “p11d” value (see below),. As the saving is based on a combination of their tax.
Back in 2017, just one in every 70 passenger vehicles sold across the globe was. Benefit in kind (bik) tax rules for electric vehicles evs in the uk are significantly favourable compared to petrol or diesel vehicles.