Established contractors
FBT for solo directors: the company vehicle trap
Why fringe benefit tax triggers on availability rather than use, the four conditions behind the work-related vehicle exemption, and the cleanest way to stay out of FBT's way entirely.
~7 min read · Facts checked 16 Jul 2026
Fringe benefit tax exists to stop a simple trick: paying people in things instead of money. For a solo director paying themselves through their own company, FBT is mostly about one thing, the vehicle, and one widely misunderstood exemption, the signwritten ute. This guide covers the shape of the tax and the trap that actually catches contractors.
What FBT is
When a company provides an employee (including its shareholder-employee, you) with a non-cash benefit, the company pays FBT on the value of that benefit: typically a vehicle available for private use, low-interest loans (the overdrawn current account territory covered in the drawings guide), or perks like insurance paid on your behalf. The rates are set high on purpose: the single rate is 63.93% of the benefit's taxable value, mirroring the top personal rate so benefits can't out-compete salary. (An alternate 49.25% rate exists for quarters one to three with a year-end wash-up; that's accountant machinery, worth knowing exists rather than operating yourself.) Returns are typically quarterly.
The vehicle: available beats actually used
The rule that surprises everyone: FBT on a company vehicle triggers on availabilityfor private use, not on use. The company car parked at your house every night is available for private use every one of those days, and the fact that you barely drove it privately doesn't change the calculation. For a solo director, a company-owned everyday car is therefore one of the most reliably expensive ways to own a vehicle, and the comparison with owning it personally and claiming business use usually favours the latter.
The work-related vehicle exemption, precisely
The exemption behind every signwritten ute exists, but it has four conditions and needs all of them:
- The right kind of vehicle:mainly designed to carry goods (utes including double cabs, vans, vehicles with the rear seats permanently out), not principally a people-carrier. A sedan or ordinary SUV can't qualify however it's painted.
- Permanent, prominent signwritingwith the business identification on the exterior; magnetic or removable signs don't count.
- A written restriction on private use: a letter on file limiting private use to travel between home and work plus incidental stops in the course of business (the supermarket on the way home is fine; the weekend boat ramp is not).
- Regular checks that the restriction holds, documented quarterly.
Meet all four and FBT doesn't apply for days the vehicle is a work-related vehicle; let one lapse (or allow weekend private use, which is FBT-liable for those days) and the exemption thins accordingly. The folklore version, "utes are FBT-free", is the four-condition rule with three conditions forgotten.
Staying out of FBT's way
Most solo directors' cleanest position is having no fringe benefits at all: own the car personally and charge the company for business use, keep the current account out of overdraft, and take value as salary. FBT then remains a tax you understand rather than one you file.
How Coffer fits
Coffer serves sole traders today, where FBT doesn't arise: there's no company, so vehicle costs are simply apportioned expenses. It's included in this library because the contractors who outgrow sole trading meet FBT next, usually via the vehicle question, and company support is on Coffer's roadmap.
References
- Calculation options and rates for fringe benefit tax · Inland Revenue Department · accessed 16 Jul 2026
- Fringe benefit tax exemptions for motor vehicles · Inland Revenue Department · accessed 16 Jul 2026
- Employer provided motor vehicles for private use · Inland Revenue Department · accessed 16 Jul 2026