Vehicle Fleet, No FBT Return? Three Lessons Before The 21 May Deadline
What does it cost a business to ignore Fringe Benefits Tax on its fleet?
In Prestige Form Group NSW Pty Ltd and Commissioner of Taxation [2026] ARTA 627 (April), a NSW concrete formwork business found out the hard way: no returns lodged on a fleet that included a couple of Range Rovers and a Jaguar, logbooks that did not hold up, and an Administrative Review Tribunal unwilling to overlook either.
The Tribunal forced the business off the Operating Cost Method onto the Statutory Formula Method (which usually produces a much higher taxable value) and upheld the recklessness penalty in full.
The dollar figures are not the point. The patterns are, and they show up across trades, construction, primary production and any business running a fleet.
Lesson 1: “It's a work vehicle” is not an FBT answer
Once a company-owned car is held by the business and made available for an employee's private use, including being garaged at home or used on weekends, it is generally a car fringe benefit and FBT is payable.
Exemptions exist for some commercial vehicles, but they have specific tests and need supporting evidence. In Prestige, four of the seven vehicles were ultimately accepted as having no FBT exposure, but only after years of audit, two rounds of submissions, and a stack of witness statements. The other three: full exposure across four years.
Lesson 2: A logbook only counts if it is contemporaneous and complete
The business wanted to use the Operating Cost Method (OCM), the logbook method, which can give a far lower taxable value than the Statutory Formula Method (SFM) when business use is high. But the substantiation rules are strict: a logbook covering at least 12 continuous weeks, kept at the time, recording date, odometer readings, kilometres, business-use percentage and the purpose of each trip.
The Tribunal found the logbooks here did not measure up, and that no timely written election to use OCM had been made. Result: OCM denied, tax recalculated under SFM; a flat 20% of the car's cost before any employee contribution.
For a fleet of mid-to-upper range vehicles, the swing between the two methods is rarely small. Setting logbooks up correctly the first time keeps the choice available year on year.
Lesson 3: A premium vehicle on the asset register is an audit flag
We will not speculate on exactly what tipped the ATO's review into a full audit, but a luxury or near-luxury vehicle in a company name with no FBT return alongside it is a known pattern. Range Rovers and a Jaguar on a concrete formwork company's books, no FBT returns lodged for four years: that combination invites questions.
The same pattern shows up in other trades, primary production and family operations with mixed fleets. If the vehicle would not look out of place at school pickup, the ATO will want to see how you have handled the FBT side.
The bigger lesson: lodging the FBT return is the protection
You do not avoid FBT by ignoring it. You concentrate the risk. Not lodging meant the ATO commenced default assessments on its own assumptions, which the business then had to argue against under the legal burden of proof, and the amendment period stayed wide open the whole time.
Lodging an FBT return each year, even a nil return, is the simplest protection a fleet-owning business has. It starts the amendment period, unlocks elections and concessions (work-related items, otherwise deductible rule, minor benefits), feeds Reportable Fringe Benefits Amounts through to staff payment summaries, and turns FBT paid into an income tax deduction.
Three habits that save audit-time pain:
Review every vehicle the business owns, leases or holds, each FBT year, and check whether it is providing a car fringe benefit.
Keep a contemporaneous 12-week logbook for any vehicle where you want to argue a high business-use percentage. Refresh it every five years, or sooner if usage changes.
Lodge the FBT return each year, even where the taxable value is nil. The OCM election, the exemptions and the otherwise deductible rule all have to be in writing, on time.
FBT is one of those areas where the rules look simple from a distance and bite hard up close. We know the exemptions, elections and documentation that have to exist on the day rather than at audit time.
If your business owns more than one vehicle and has not been lodging FBT returns, get in touch well before 21 May. We will review the fleet, set up the records, pick the right method per vehicle, and lodge a clean return that closes the open-ended amendment risk. Less stress, less tax, more certainty.
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