Increase in the Cents Per Kilometre Method For Car Expenses

From 1 July 2018 the rate is 68 cents per kilometre. Using this method you can claim a maximum of 5,000 business kilometres per car. You don’t need written evidence but you need to be able to show how you worked out your business kilometres (for example, by producing diary records of work-related trips).
Where you and another joint owner use the car for separate income-producing purposes, you can each claim up to a maximum of 5,000 kilometres.