14/04/2026
How do you track your vehicle expense deductions? Do you use the 88 cents per km method?
It's important to know that the Cents per KM method caps out at 5000 km per year, meaning your entire deduction maxes at $4400.
Compare that to the Logbook method:
Keep a logbook for 12 weeks, recording every trip's purpose, start/end odometer, and km. That gives you a business-use percentage. You then claim actual annual car costs Γ that percentage. No km cap.
You can literally be leaving thousands worth of deductions on the table by not using a logbook.
The logbook wins for almost every sole trader who drives regularly to jobs. The only scenario where cents per km makes sense is if you drive fewer than about 5000 business km a year and your running costs are low.
So, if you drive more than 5000 km a year, you really need to be using your logbook!