Working out the cost of electricity used to run your electric vehicle (EV) where you use the vehicle for business purposes and you use the logbook method for making your claim for car expenses is a little more complex than monitoring the cost of fuel used to run an all-petrol vehicle. You need to keep certain records and make some choices along the way.
But first, a quick look at some of the basic rules around tax claims for the business use of cars, including EVs.
Costs incurred in running your car for business purposes can be deducted using one of several methods. The term “business purposes” includes:
» Attending meetings or conferences away from your usual place of work
» Collecting supplies or delivering items
» Travel between two separate places of work (e.g., for a second job)
» Travel from your home or your usual place of work to an alternative worksite (e.g., a client’s office or worksite)
» Itinerant work, where the job requires you to work at more than one location each day before going home
Note: Travel between your home and your usual place of work is only deductible in quite limited circumstances – e.g., when transporting bulky equipment to and from a worksite.
For many taxpayers, the statutory safe harbour rate of 88 cents per kilometre for the 2025–26 income year (for up to 5,000 business kilometres) can be the simplest way of claiming car expenses.
If you use this method, you’ll need records showing how you worked out your business kilometres, e.g., a travel diary covering the income year. You must also show that you own or lease the car.
The logbook method can give a better result if you have a high percentage of business use.
Requirements:
Other rules:
You then apply your business use percentage to the total costs (depreciation, insurance, rego, maintenance, etc.) for your deduction.
EVs are typically charged at both commercial charging stations and home chargers.
Unless your EV can report the percentage of home charging, the ATO allows a home charging rate of 4.2c per km for the total distance travelled during the year.
Rules:
Keep:
Finally, add electricity costs to other running costs (incl. depreciation) and apply your logbook % for the claim.
PHEVs are trickier because they use both petrol and electricity.
The ATO has a detailed 7-step method to calculate this, but in practice, for tax prep you’ll need:
» Actual petrol and oil costs
» Opening & closing odometer readings
» Your PHEV’s Condition B test cycle fuel economy figure (manufacturer spec)
From there, we calculate the correct deduction to ensure you claim your full entitlement.