The ATO, after consultation and collaboration with business taxpayers and industry representatives, has developed what it calls a “safe harbour” mechanism for calculating car fringe benefits under the operating cost method.

In ATO parlance, a safe harbour is a guideline that allows taxpayers to make use of a simplified and efficient way to calculate their tax obligations where certain conditions are met.

In this case, the ATO has a streamlined approach (see the relevant PCG below) to working out the business use percentage of car fringe benefits for fleets of 20 cars or more. “The new approach reduces the record-keeping burden for your business clients,” it says, adding that it allows taxpayers “to use an ‘average business use percentage’ when using the operating cost method”.

How does it work?
Business taxpayers can access the safe harbour and use this new simplified approach if:

  • they are an employer with a fleet of 20 or more “tool of trade” cars
  • the vehicles are not part of salary packaging arrangements, and employees cannot elect to receive cash instead
  • the cars have a GST-inclusive value of less than the luxury car tax limit in the year acquired
  • employees are mandated to maintain logbooks and there are valid logbooks for at least 75% of the cars in the logbook year.

After all of the above is in place, an employer can use the logbooks to calculate the fleet’s average business use percentage.

This is calculated by:

  • gathering all log books kept for each car in the fleet
    • determining which of those log books are valid
    • confirming that you have valid log books for at least 75% of the cars in the fleet, and
    • calculating the average of the business use percentages determined in accordance with each of the valid log books. Readmore