Buying a Car for Business in Australia – Tax Write-Off (2025)

For many business owners and entrepreneurs, maximising tax deductions is essential to improving cash flow and growing profits. One potential deduction available to Australian businesses is related to motor vehicle expenses.

However, the tax benefits of buying a vehicle for business purposes depend on multiple factors. Simply purchasing a car through your business entity doesn’t guarantee a large tax break. Understanding the Australian Taxation Office (ATO) rules can help you make informed, strategic decisions.

Here’s what you should know before buying a car for your business in 2025 with the goal of claiming a tax deduction.

What Is a Business Car Tax Write-Off in Australia?

A tax write-off refers to an expense that reduces your taxable income. In the case of business vehicles, you may be able to deduct some or all of the purchase and operating costs, provided the vehicle is used for business-related activities.

The ATO allows deductions for cars used in business, but the amount you can claim depends on:

• The type of vehicle
• The proportion of business versus personal use
• The method you use to calculate the deduction

For passenger vehicles (less than 1,000kg load capacity and fewer than nine passengers), a specific car limit applies, restricting the maximum amount you can claim.

Eligibility for a Business Car Tax Deduction

To qualify for a vehicle tax deduction:

1. Primarily Business Use: The car must be used mostly for business purposes (typically more than 50% of total usage).
2. Record Keeping: Maintain thorough records such as:
   • A 12-week logbook
   • Receipts for expenses (fuel, repairs, insurance, rego, etc.)
3. Deduction Method: Choose between two ATO-approved methods:
   • Logbook Method: Claim actual costs based on business use percentage
   • Cents per Kilometre Method: Claim a fixed rate for up to 5,000 business kilometres per year

How Business Structure Affects Vehicle Deductions

The structure of your business (sole trader, partnership, company, or trust) impacts how deductions are calculated:

• Sole Traders/Partnerships: Can use either the logbook or cents per kilometre method. Must exclude personal use.
• Companies/Trusts: Cannot use simplified methods. Must base claims on actual business costs. If employees use vehicles privately, fringe benefits tax (FBT) may apply.

If an employee owns the car and is reimbursed by the business, you may deduct the reimbursement, but depreciation cannot be claimed by the business.

Claiming Vehicle Depreciation

Depreciation reflects the decline in value of a car over time due to use and wear. The ATO offers two main options:

1. Instant Asset Write-Off:
   • For 2024–25, businesses with turnover under $10 million can claim an immediate deduction for the business portion of vehicles costing less than $20,000.
2. General Small Business Pool:
   • For higher-cost vehicles, claim 15% depreciation in the first year, then 30% annually thereafter.

Note: If using the cents per kilometre method, depreciation is already factored in and cannot be claimed separately.

Common Pitfalls to Avoid

1. Inadequate Documentation: Failure to maintain a logbook and receipts may invalidate your claim.
2. Ignoring Operating Costs: Ongoing expenses like maintenance, insurance, and fuel add up.
3. Luxury Vehicles: Higher costs may not equal greater deductions. Luxury Car Tax and high depreciation can reduce net benefit.

GST Implications

If your business is registered for GST and purchases a car in the business name, you may be entitled to a GST credit. However, the maximum claimable GST amount is capped.

• 2024–25 Car Limit: $69,674
• Maximum GST Credit: 1/11 of the car limit, or $6,334

When selling the vehicle, GST must be applied on the full sale price.

Summary

• Select a deduction method that suits your business type and usage pattern.
• Keep detailed records to support your claim.
• Consider all ownership costs, not just the purchase price.

Navigating car tax deductions can be complex. For tailored advice, reach out to a registered tax agent or accountant to make sure you’re complying with ATO rules and maximising your benefits.

FAQs

What expenses can I claim for a business vehicle?

You can claim fuel, servicing, repairs, insurance, registration, loan interest, and in some cases depreciation. Only the business-use portion is deductible.

How do I calculate the business-use percentage?

Use a 12-week logbook to track kilometres driven for work. Divide business kilometres by total kilometres to calculate your percentage.

Which method should I use to claim expenses?

Sole traders can choose either the logbook or cents per km method. Companies must use actual expense claims.

How often should I update my logbook?

Every 5 years or sooner if your business usage changes by more than 10%.

What are the risks of incorrect claims?

Overstating business use or lacking records could result in audits, penalties, and repayment of deductions with interest.

Is stamp duty payable on business vehicle transfers?

Yes. Most states require stamp duty on used car transfers, based on sale price or market value. Rates typically range from 3% to 6%.

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