HMRC releases EV mileage rates for September ’26

HMRC releases EV company-car reimbursement rates from September 2026

HMRC has kept its advisory electric rates for company cars at 7p per mile for home charging and 15p per mile for public charging from 1 September 2026.

EVCP Info 24 August 2026 2 min read Updated 25 August 2026

The rates are unchanged from the June-August quarter.

Public charging remains more than twice the home rate

HMRC’s calculation uses an electrical efficiency of 3.59 miles per kWh for both charging locations.

For home charging it uses an electricity cost of 24.47p/kWh, producing a calculated rate of 6.81p per mile and a rounded advisory rate of 7p.

For public charging HMRC uses 54p/kWh, producing 15.02p per mile and an advisory rate of 15p.

HMRC says the public electricity price is based on Zapmap’s price index for charging below 50 kW.

Employers can reimburse more where the actual cost is higher

The advisory rate is not an absolute ceiling. HMRC allows employers to use a higher rate where they can demonstrate that the actual cost per mile was higher.

This is particularly relevant for drivers who rely on more expensive rapid or ultra-rapid charging rather than lower-power public charging.

Hybrids remain treated as petrol or diesel

HMRC continues to treat hybrid cars as either petrol or diesel vehicles for advisory-rate purposes.

There is no separate advisory electricity rate for the electric mileage completed by a plug-in hybrid.

The split between 7p home and 15p public charging therefore remains most directly relevant to fully electric company cars and highlights the continuing cost difference between charging locations.