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7th May, 2024

A Guide for SMEs on Demystifying Vehicle Expenses, Car Allowances, and Logbooks

Navigating the complexities of car allowances and logbooks can be daunting for small business owners.

This can be complex, and understanding what you can claim is crucial for optimising your business deductions and minimising tax liabilities. 

In this guide, we delve into the intricacies of car allowances and logbooks, answering the question that small business owners often ask: What can I claim when it comes to my organisation’s motor vehicles?

We’ll cover the following:

  • The different business structures and how that affects how your business can claim vehicle expenses
  • How vehicle ownership makes a difference
  • What car allowances are and how they work
  • What logbooks are and how they’re used for tax purposes
  • Tips for keeping proper logbooks

Business Structures and Their Impact on Claiming Vehicle Expenses

The type of business you operate affects how you calculate your motor vehicle expenses, so it’s important to consider this when you are claiming car costs on your business’ tax return.

  • You’re a sole trader or in a partnership
  • If you’re a sole trader or in a partnership, the calculation depends on the type of vehicle.
  • You use your car for business purposes, you can claim expenses like fuel and maintenance. But if you also use it for personal stuff, you’ve got to exclude that personal use percentage.

If you use cars for your business, you’ve got two options for claiming costs: the cents per kilometre method or the logbook method.

With the cents per kilometre method, you can claim up to 5,000 business kilometres per car per year.

(Rates change, though, over time, so make sure you’re up to date with the current rate each tax year).

For the Logbook Method, you’ll need to keep a logbook to record all your trips for at least 12 weeks during the year.


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This car logbook helps you work out the business use percentage of your car to claim expenses like fuel and maintenance.

If you use other vehicles, rather than cars, in your business, you must claim actual costs based on receipts. You aren’t allowed to use the cents per kilometre or logbook method for trucks and the like.

You can also use manual logbooks or something like the ATO app to track this or other commercial apps like drivers note that make the task of keeping a logbook easier.

For those with companies and trusts

If your business is set up as a company or trust, you can only claim actual costs based on receipts for motor vehicle expenses.

You can’t use the cents per kilometre or logbook method in this situation.

Other Points of Note

Also, no matter the type of vehicle you own or the type of business structure, note that if you’re using the logbook method or actual costs, you can claim depreciation over time.

There are rules around this, so make sure you’re across them and keep up to date on any ATO changes.

Plus, regardless of the method you use to calculate vehicle expenses in your business, you’ll need to keep accurate records, covering things like loan documents, tax invoices, and registration papers.

car allowances

Understanding Car Allowances

If you have employees who use their own vehicles to complete work-related tasks for your business, you need to understand how car allowances work.

A car allowance is a payment made by an employer to an employee to cover the costs associated with using their own car for work-related purposes.

It’s essential to distinguish between a car allowance and a reimbursement for actual expenses incurred.

While a car allowance is generally a fixed amount paid regularly, a reimbursement is based on actual expenses and requires documentation to substantiate claims.

What Can You Claim with a Car Allowance?

For those who either have a car allowance set up for themselves in their business or make them available for employees, it’s vital to understand what can be claimed.

The list includes:

Business-related travel

Expenses incurred while using one’s own car for work-related purposes are generally deductible.

This includes travel between different work locations, client meetings, and business-related errands.

Fuel and maintenance

Costs associated with fuel, servicing, repairs, and maintenance of cars used for work-related purposes are deductible.

However, you must keep detailed records of these expenses, including receipts and invoices, to substantiate claims.

Depreciation

The depreciation of your car’s value over time is deductible.

You can claim depreciation as a tax deduction based on the car’s purchase price and its effective life.

Understanding Logbooks

A logbook is a detailed record of all the trips you make in your car for work-related purposes.

It includes information such as the date of each trip, its purpose, the starting and ending odometer readings, and the total kilometres travelled.

Keeping an accurate logbook is essential for substantiating your claims for car-related expenses.

What Can You Claim with a Logbook?

You can claim multiple expenses with your logbook. For example:

Business use percentage

The key benefit of maintaining a logbook is that it allows you to determine the business use percentage of your car.

This represents the proportion of your car’s use for work purposes and determines the amount of expenses you can claim.

Fuel and running costs

Once you’ve determined the business use percentage using your logbook, you can claim a deduction for the corresponding proportion of fuel and running costs, including servicing, repairs, insurance, and registration fees.

Depreciation

You can also claim depreciation on the portion of your car’s value that relates to its business use.

This allows you to deduct a portion of the car’s purchase price each year as a tax deduction.

Tips for Keeping an Effective Logbook

First, begin keeping a logbook as soon as you start using your car for work-related purposes.

Next, be detailed. Record all relevant information for each trip, including the date, purpose, starting and ending odometer readings, and total kilometres travelled.

Accuracy and completeness are essential for substantiating your claims.

Plus, don’t forget to maintain consistency.

Regularly update your logbook every time you use your car for work-related purposes.

Avoid estimating or rounding off figures, too, as this can undermine the credibility of your logbook.

Vehicle expenses, car allowances, and logbooks play a crucial role in maximising tax deductions for small business owners.

By understanding the rules and regulations set forth by the ATO and keeping accurate records, you can ensure you claim all eligible expenses and minimise tax liabilities as much as possible.

Also, remember to consult with a qualified tax advisor for personalised advice tailored to your specific circumstances each year, too.


Information provided in this article is of a general nature and does not consider your personal situation. It does not constitute legal, financial, or other professional advice and should not be relied upon as a statement of law, policy or advice. You should consider whether this information is appropriate to your needs and, if necessary, seek independent advice. This information is only accurate at the time of publication. Although every effort has been made to verify the accuracy of the information contained on this webpage, MYOB disclaims, to the extent permitted by law, all liability for the information contained on this webpage or any loss or damage suffered by any person directly or indirectly through relying on this information.

MYOB is not a registered entity pursuant to the Tax Agent Services Act 2009 (TASA) and therefore cannot provide taxation advice to clients. If you have a query concerning taxation including filing your BAS return or annual tax statements then you should consult with your accountant or other registered tax adviser.