Transport and logistics businesses carry some of the most capital-intensive balance sheets in the small-to-medium business sector. Fleets of trucks and trailers, fuel as a major operating cost, a workforce mix of employed drivers and owner-operators, and state-based road user charges all create bookkeeping obligations that differ significantly from most other industries. This guide covers the key areas.
Fleet Depreciation: Division 40 vs. Instant Asset Write-Off
Trucks, prime movers, semi-trailers, rigid delivery vehicles, forklifts, and other commercial transport equipment are depreciating assets under Division 40 of the Income Tax Assessment Act 1997 (ITAA 1997). The ATO publishes effective lives in Tax Ruling TR 2023/1:
- Prime movers and semi-trailers: 15 years (diminishing value rate: 13.33%)
- Rigid trucks (GVM > 3.5 tonnes): 15 years
- Light commercial vehicles (GVM ≤ 3.5 tonnes): 12.5 years
- Trailers (general freight): 20 years
- Forklifts: 10 years
Operators can elect between the diminishing value and prime cost methods under s.40-70 and s.40-75 of ITAA 1997. For high-turnover operations replacing assets frequently, the diminishing value method accelerates deductions in the early years of an asset's life.
Instant asset write-off has historically allowed small business entities to fully deduct eligible assets below certain thresholds in the acquisition year. However, the threshold and eligibility rules have changed substantially since 2020. For the 2024–25 income year, the threshold is $20,000 for small business entities. Given that a typical prime mover costs $200,000–$400,000, most transport operators will use Div 40 depreciation for their heavy vehicles rather than instant write-off.
For assets purchased on chattel mortgage or hire purchase — common fleet financing structures — the operator is treated as the owner for tax purposes from day one, and depreciation applies in the usual way. Operating lease arrangements are treated differently; confirm the structure before coding the journal entries.
Fuel Tax Credits
Fuel tax credits are one of the most significant cash flow items for transport operators and are frequently miscalculated. Under the Fuel Tax Act 2006, businesses can claim credits for the fuel tax (excise duty) included in the price of fuel used in eligible ways.
For road transport, the key distinction is:
- On-road fuel use by heavy vehicles (GVM > 4.5 tonnes on a public road): a partial credit is available — fuel excise minus the Road User Charge (RUC) portion. The RUC is a per-litre charge that effectively represents the heavy vehicle's contribution to road infrastructure costs, so the net credit is lower than for off-road use.
- On-road fuel use by light vehicles (GVM ≤ 4.5 tonnes): generally no fuel tax credit available for private or light commercial use.
- Off-road fuel use (engines, generators, refrigeration units on refrigerated trailers): full fuel tax credit applies.
- Auxiliary equipment (crane trucks, pump trucks operating stationary): off-road credit may apply for fuel used in the non-propulsion engine.
The fuel tax credit rates change quarterly and are indexed to the CPI. Bookkeepers should retrieve the current rates from the ATO's fuel tax credit calculator at each BAS preparation — using stale rates from the prior quarter understates the credit entitlement.
Road User Charges (RUC)
The Road User Charge is not a separate payment most operators make directly — it is built into the calculation of net fuel tax credits for on-road heavy vehicles. The RUC rate for the 2024–25 year is set by the National Heavy Vehicle Regulator; the ATO incorporates it when publishing the effective fuel tax credit rates.
For bookkeeping purposes, the gross fuel cost is an operating expense, and the fuel tax credit is a reduction of that expense (or coded as other income, depending on the firm's preference). Be consistent in your coding convention across the client base.
PAYG Withholding: Employed Drivers vs. Owner-Operators
The workforce structure in transport is often mixed, with some employed drivers on payroll and some owner-operators (subcontractors who own their own vehicle). The distinction has significant payroll and super implications.
Employed drivers — standard PAYG withholding applies. Superannuation Guarantee at 11.5% (2024–25). Award coverage: the Road Transport and Distribution Award or the Road Transport (Long Distance Operations) Award depending on the work type.
Owner-operators — where a truck owner drives their own vehicle under a contract with a transport operator, they are typically independent contractors. No PAYG withholding (unless they fail to quote an ABN). No SGC obligation from the engaging entity. However:
- If the owner-operator fails to quote an ABN, the 47% no-ABN withholding rule under the Taxation Administration Act 1953 applies
- The ATO's Contractor Decision Tool should be applied to determine whether any particular arrangement is genuinely contractor vs. employee
- The Superannuation Guarantee (Administration) Act 1992 (SGA Act) extends SGC obligations to certain contractors who work substantially in the capacity of an employee — transport engagements should be reviewed against s.12(3) of the SGA Act
TPAR (Taxable Payments Annual Report): Road freight transport operators must lodge a TPAR by 28 August each year, reporting all payments made to contractors (including owner-operators) during the prior financial year. This is a perennial compliance gap in transport businesses.
FBT on Work Vehicles Used Privately
Where the operator provides a vehicle to an employee or director that is available for private use, FBT applies under the Fringe Benefits Tax Assessment Act 1986 (FBTAA). The two calculation methods:
Statutory formula method: 20% of the vehicle's base value per year, regardless of actual use. Simple to apply but produces a high FBT liability for vehicles with significant private use.
Operating cost method: FBT is based on actual private use as a percentage of total use. Requires a logbook (12 continuous weeks) to substantiate the business-use percentage. More administratively demanding but typically produces a lower FBT liability for high-business-use vehicles.
For heavy commercial vehicles used primarily for interstate freight, private use is generally minimal and the operator may be able to argue no FBT liability applies — but this requires contemporaneous records.
Legislation and Further Reading
- Income Tax Assessment Act 1997, Division 40 — capital allowances
- Fuel Tax Act 2006 — fuel tax credits framework
- Fringe Benefits Tax Assessment Act 1986 — FBT on employer-provided vehicles
- Superannuation Guarantee (Administration) Act 1992, s.12(3) — contractor SGC obligations
- Taxation Administration Act 1953, Schedule 1 Div 12 — no-ABN withholding
- ATO: Fuel tax credits — calculating your claim (www.ato.gov.au/Business/Fuel-schemes/Fuel-tax-credits-for-business/)
- ATO: Taxable payments annual report — transport (www.ato.gov.au/businesses-and-organisations/preparing-lodging-and-paying/reports-and-returns/taxable-payments-annual-report/)
- ATO Tax Ruling TR 2023/1 — effective lives of depreciating assets