A car fringe benefit is calculated by either of the Operating Cost or Statutory Formula methods, or in the case of expense reimbursements the private use portion of the expense.

The taxable fringe benefit is reduced by the amount of any employee contributions.

The FBT Operating Cost Method – Log Book

Under the operating cost method, the taxable value of the fringe benefit is based on a private percentage of the vehicle’s total operating costs which include:

  • petrol
  • repairs
  • registration
  • insurance
  • lease costs if applicable, and
  • if the vehicle is owned
    • depreciation without regard to the depreciation limit, and
    • an imputed interest factor at a statutory rate (see below).

Log Book

To determine the business/private percentage under the operating cost method, a log book is required to be kept over a continuous 12 week period and renewed after 5 years, or earlier if required. The log book is to be submitted to the employer.

Vehicle cost for FBT purposes and depreciation

The vehicle cost for depreciation purposes includes dealer delivery charges, GST and customs duty if applicable.

The cost also includes non-business accessories, and the depreciation cost limit does not apply. (See TR 2011/3)

The diminishing value depreciation percentage rate to be used is determined from the date of purchase according to the following table:

Date purchased Depreciation Rate
(Diminishing Value Method)
 before 1 July 2002 22.5%
 1 July 2002 to 9 May 2006 18.75%
After 9 May 2006 25%


The interest component for FBT purposes

The interest component of an owned vehicle cost is determined by a benchmark interest rate which is adjusted and announced annually in a Tax determination before the beginning of the FBT year.

Formula for Operating Cost Taxable Benefit:

Taxable value =  [Total vehicle costs (including depreciation and imputed interest where the vehicle is owned)] x  Private use percentage LESS Employee contributions

The Statutory Formula Method

The statutory formula method determines a taxable value from a statutory percentage of the car’s cost. The percentage is based upon the total number of kilometres travelled during the year.

This method requires that the following data be obtainedi:

  • a record of opening and closing odometer readings
  • cost of the vehicle
  • date of purchase
  • number of days the vehicle available for private use.

The taxable value of the benefit is reduced by the amount of employee contributions.

The statutory percentage to be applied will depend on whether the provision of the car benefit is under a pre-existing commitment on or before 10 May 2011.

  Pre 10 May 2011 Commitments
 Annualised total Kms travelled for the FBT year Statutory percentage
 Under 15,000  26%
 15,000 to 24,999  20%
 25,000 to 40,000  11%
 Over 40,000  7%


The statutory fractions for new commitments entered into after 7.30pm on 10 May 2011, are being phased in to a standard 20%, as follows:

 After 10 May 2011 – New Commitments
 Annualised total Kms travelled for the FBT year  From 10 May 2011 From 1 April 2012 From 1 April 2013 From 1 April 2014
 Under 15,000 20% 20% 20% 20%
 15,000 to 24,999 20% 20% 20% 20%
 25,000 to 40,000 14% 17% 20% 20%
 Over 40,000 14% 13% 17% 20%


Formula for Statutory Formula Method Taxable Benefit:

Taxable value = [Vehicle cost x Statutory percentage x days private use] ÷ 365 LESS Employee contributions

The statutory formula method has a concessional effect when a high number of total kilometres is travelled with a high private use percentage, and when the vehicle has a low cost. The phase-in of the flat 20% statutory percentage will reduce this advantage.

There may also be scope for reducing the taxable value of the car benefit by ensuring that the periods in which the car is considered available for private use are minimised – for example by paying attention to where the car is garaged during periods of absence or while travelling. A car garaged at home will normally be treated as being available for private use.

A taxable motor vehicle fringe benefit arises where in respect of employment:

  • a car owned or leased by the employer, associate or third party is made available to the employee/associate for private purposes to the employee; or
  • an expense payment benefit will arise where the car is owned or leased by the employee/associate and car expenses are reimbursed by the employer.

Note: The devil is in the detail. The information on this page is a summary, and should not be relied upon as the final word in this complex area. Please consult references for essential detailed guidance.

Use of vehicles other than cars

If the motor vehicle provided is not a “car” – (which is a vehicle of less than one tonne carrying capacity, and designed to carry less than 9 passenger) – then the fringe benefit may be subject to FBT as a “residual benefit“.

Hire cars and taxis are excluded as car benefits, unless there is substantial continuity which the ATO treat as a period of at least 12 weeks. Such vehicle benefits would therefore normally not be valued as a car benefit, but treated as a residual benefit.

The valuation of residual benefits of vehicles other than cars may be calculated under the Operating Cost method (see below) or if there is extensive business use, the cents per private kilometre method (see table below).

FBT and private use of a car

The private use of a car, or availability for private use, is determined on a daily basis. A car is assumed to be available for private purposes if it is garaged at or near the employee’s (or associate’s) home or is in the employee’s custody or control.

Such deemed private use can be minimised in the employee’s absence (for example while travelling) by – for example – leaving the car with the employer, rather than being garaged at home.

A common instance of private travel is the trip between home and work. As is the case when claiming work-related expenses, the need to transport bulky work-related equipment can transform this journey into a work-related trip.

FBT-exempt private car use

  • Minor use of commercial vehicles such as panel vans, taxis, or utilities designed to carry a load of less than one tonne, is exempt if the use is limited to
    • travel between home and work
    • travel incidental to work duties, and
    • non-work-related use that is minor, infrequent and irregular
  • Cars used for emergency services, fitted and marked as such, such as police, ambulance, fire services
  •  Unregistered vehicles held at all times by the provider and used wholly or principally in the business operations

FBT and vehicles which are not cars

Vehicles which are designed to carry at least 1 tonne or 9 passengers are not cars by definition, and therefore not caught within the car fringe benefit rules. However the residual fringe benefit rules may apply to the private use.

When there is extensive business use of the vehicle, the ATO provide a per kilometre rate for the valuation of the private use residual fringe benefit, as an alternative to the more records-intensive operating cost valuation method.

FBT under this method is calculated by the gross-up of Kms x $rate – normally at the Type 2 gross-up percentage as the employer is entitled to GST credits – and FBT is payable on the resulting value at the FBT tax rate.

Reduction in FBT value:

If there is an arrangement for the payment of vehicle expenses by the employee, these can be deducted from the calculated fringe benefit value. Estimates of fuel paid under such an arrangement are accepted by the ATO on the basis of average fuel prices and the number of private kilometres travelled.

The otherwise deductible rules

The value of the benefit may be reduced by the employee’s “otherwise deductible” amount – the amount of the benefit which would have been a tax deduction, had the employee paid for it. Substantiation must be obtained by the employer before lodgement of the relevant FBT return.

See also

Further information


This page was last modified on 13 June 2017