A business car loan and a personal car loan fund the same thing, a vehicle, but they are assessed, owned, and taxed differently. The business loan is assessed against your business’s financials and can carry deductions like the instant asset write-off. The personal loan is assessed against your own income and generally carries no business tax deductions, even if you occasionally use the car for work.
Which one applies to you depends on how the vehicle is actually used, not just who is buying it. This guide compares the two structures on ownership, GST treatment, tax deductions, and how lenders assess each, using current ATO figures rather than outdated ones still floating around online. MC Mortgage Solutions arranges both business and personal vehicle finance for buyers across Brisbane and the bayside.
Business-Use Vehicles vs Personal-Use Vehicles: The Core Difference
A business-use vehicle is bought and financed by the business (or by you, wholly for business purposes) and is generally treated as a business asset for tax and depreciation purposes. A personal-use vehicle is bought for private use, and the loan is assessed on your personal income and credit history rather than your business’s turnover or cash flow.
The distinction matters because it determines three things: who owns the asset, what deductions are available, and how the lender assesses the application. Mixed-use vehicles, where a car is used for both business and private trips, only attract deductions on the business-use portion, and the ATO expects a logbook or similar record to substantiate that percentage.
| Business car loan | Personal car loan | |
|---|---|---|
| Assessed on | Business turnover, cash flow and time trading | Your personal income, expenses and credit history |
| Who owns the vehicle | The business, immediately under a chattel mortgage, or after the final payment under a hire purchase | You do, with the lender holding security over it |
| GST credit | Claimable if the business is GST registered, capped at one eleventh of the ATO car limit | Not claimable |
| Instant asset write-off | Available on the business-use portion, subject to the threshold and turnover test | Not available |
| Loan interest | Deductible on the business-use portion | Generally not deductible |
| Records required | Logbook or similar to substantiate the business-use percentage | None for tax purposes |
Secured Car Finance for Business: Chattel Mortgage vs Hire Purchase
Most business car loans in Australia are structured as either a chattel mortgage or a hire purchase, and the two differ on loan ownership from day one.
Chattel mortgage
The business takes ownership of the vehicle immediately at settlement. The lender registers a security interest over the vehicle (rather than holding legal title), which is released once the loan is repaid. This is the more common structure for GST-registered businesses because it allows the GST credit to generally be claimed upfront, in the first activity statement after purchase, rather than spread across the loan term.
Hire purchase (commercial hire purchase)
The financier retains legal ownership of the vehicle for the loan term. The business pays instalments and only takes ownership once the final payment (and any balloon amount) is made. GST credits under a hire purchase are typically claimed progressively, aligned with each instalment, rather than upfront.
| Chattel mortgage | Hire purchase | |
|---|---|---|
| Ownership during the term | The business owns the vehicle from settlement | The financier holds legal title until the final payment |
| Lender security | A registered security interest over the vehicle | Legal title, transferred on completion |
| When the GST credit is claimed | Generally upfront, in the first activity statement after purchase | Progressively, aligned with each instalment |
| Repayments | Fixed monthly, optional balloon at the end | Fixed monthly, optional balloon at the end |
Repayment structures are similar under both, being fixed monthly instalments over a set term, often with an optional balloon payment at the end to lower repayments. The right choice depends on your business’s cash flow and how your accountant wants your GST and depreciation claims timed.
Chattel Mortgage or Hire Purchase, Which Fits Your Business?
Both structures can work. The one that suits you depends on your GST position and cash flow, not a generic rule of thumb.
Tax Deductions on a Business Car Loan: The Instant Asset Write-Off
The instant asset write-off lets an eligible small business immediately deduct the business-use cost of an asset, including a vehicle, in the year it is first used or installed ready for use, rather than depreciating it over several years.
As at September 2026, the current ATO position is:
- Threshold: $20,000 per asset.
- Eligibility: businesses with an aggregated annual turnover under $10 million.
- Duration: the $20,000 threshold applied for the 2025-26 income year and has since been made a permanent feature of the law from 1 July 2026, continuing into the 2026-27 income year under current legislation.
This is a lower figure than some older online guides suggest, and importantly, it is a different number from the ATO’s car limit (see below). Only the business-use percentage of a mixed-use vehicle’s cost qualifies, and thresholds have changed by legislation in the past, so it is worth confirming the current figure with the ATO or your accountant before you commit to a purchase timed around it.
The ATO Car Limit and GST on a Business Car Purchase
Separately from the instant asset write-off, the ATO caps how much of a car’s cost you can claim for depreciation and GST purposes if the vehicle is designed to carry fewer than one tonne and fewer than nine passengers. This is called the car limit, and for the 2026-27 income year it is $69,883.
If a car’s GST-inclusive price is above the car limit, the maximum GST credit you can claim is one-eleventh of the car limit, not one-eleventh of the actual purchase price. For 2026-27, that caps the maximum claimable GST credit at $6,353, reduced further for any private-use percentage. Vehicles held as trading stock, emergency vehicles, and certain commercially designed (non-passenger) vehicles are generally not subject to this cap.
Example: if your business buys a car for $91,242.80 including GST, only $69,883 of that price is used for the GST and depreciation calculation, capping the GST credit at $6,353 before any private-use adjustment.
Novated Leases: Financing a Vehicle Through Salary Sacrifice
A novated lease is a three-way arrangement between an employee, their employer, and a finance company, set up as a salary sacrifice arrangement. Lease payments and running costs are deducted from the employee’s pre-tax salary, which reduces their taxable income, and the employer becomes responsible for the lease payments for the term of the arrangement.
Under the Employee Contribution Method, the employee can also make a post-tax contribution toward running costs, which reduces (and in some cases eliminates) the fringe benefits tax payable on the arrangement.
Electric vehicles currently attract a full FBT exemption under a measure introduced from 1 July 2022, provided the car is a battery electric or hydrogen fuel cell vehicle designed to carry fewer than one tonne and fewer than nine passengers, and its value sits below the luxury car tax threshold for fuel-efficient vehicles ($91,661 for 2026-27). Plug-in hybrids lost this exemption from 1 April 2025 and generally no longer qualify. The government has also announced a proposed phase-down of the EV exemption from 1 April 2027, but as at September 2026 this change is not yet law, so treat it as proposed rather than current.
How Lenders Assess Business Car Loans vs Personal Car Loans
- Business car loan: lenders assess your business’s financials, being turnover, cash flow, and time trading, rather than only your personal income. Some lenders offer low-doc options for established businesses.
- Personal car loan: lenders assess your personal income, expenses, and credit history, in the same way they would for any personal loan.
- Deposit and rates: both can be arranged as secured finance, using the vehicle itself as security, which generally attracts a lower rate than an unsecured loan.
- Vehicle age and type: most lenders apply maximum vehicle age limits, and commercial vehicles (utes, vans, trucks) are often assessed under separate commercial lending policies to passenger cars.
Because the assessment criteria genuinely differ, applying for the wrong type can slow down or complicate an otherwise straightforward purchase, particularly for a business still building its financial history. Our car loans Brisbane page sets out the lender panel and the vehicle types we arrange finance for.
Which Structure Is Right for You?
If the vehicle is used predominantly for business, and your business is GST-registered with turnover under $10 million, a chattel mortgage or hire purchase paired with the instant asset write-off is usually the more tax-effective structure, subject to your accountant confirming it fits your specific position. If the vehicle is mostly for private use, a standard personal car loan is simpler and avoids the recordkeeping a business claim requires. If you are an employee wanting a vehicle through your employer, a novated lease is worth comparing, especially for an eligible electric vehicle while the FBT exemption remains current.
This is general information, not personal financial or tax advice, and does not account for your specific circumstances. Speak with your accountant before structuring a purchase around any of these tax treatments, or ask us about our accounting and tax advisory service.
Get the Right Car Loan Structure From the Start
Whichever way you are financing your next vehicle, the structure you choose affects your tax position for years, not just your monthly repayment. We compare business and personal car loan options across our lender panel so you are matched to the right structure, not just the fastest approval.
FAQs
What is the instant asset write-off threshold for a business car in 2026?
$20,000 per asset, for businesses with an aggregated annual turnover under $10 million. This threshold applied for the 2025-26 income year and is now a permanent feature of the law from 1 July 2026 (ATO, current as at September 2026).
Can I claim GST on a business car loan?
Generally yes, if your business is GST-registered and the car is used for business purposes. If the car’s price is above the ATO’s car limit ($69,883 for 2026-27), the GST credit is capped at one-eleventh of that limit, being $6,353, reduced further for any private-use percentage.
What is the difference between a chattel mortgage and a hire purchase?
Under a chattel mortgage, your business owns the vehicle immediately and the lender holds a security interest over it. Under a hire purchase, the financier owns the vehicle until the final payment is made, then ownership transfers to your business.
Are novated leases still worth it for electric vehicles?
The EV FBT exemption is currently in full effect, so an eligible electric vehicle under a novated lease can attract no fringe benefits tax at all. A phase-down has been announced from 1 April 2027, but it is not yet law as at September 2026.
Can I claim a tax deduction on a personal car loan if I sometimes use the car for work?
Generally not on the loan interest itself. You may be able to claim work-related running costs (fuel, maintenance) for the business-use portion if you keep a logbook, but this is different from the deductions available under a business car loan. Confirm your specific situation with your accountant.
Is a business car loan harder to get than a personal car loan?
Not necessarily harder, but different. Lenders assess a business loan against your business’s turnover, cash flow and time trading, while a personal loan is assessed against your personal income and credit history. An established business with clean financials can often be assessed as quickly as a personal applicant.
