By understanding the importance of your business logbook and maintaining accurate records, you can confidently navigate your car expense claims this tax season. 

The Australian Taxation Office (ATO) requires robust evidence to support your claims, and a logbook provides just that. It's not just about recording kilometres; it's about demonstrating a clear link between your car usage and your income-producing activities.

Why Is A Logbook So Important?

• Proof for the ATO: Your logbook serves as official documentation proving your car expenses were for work-related purposes. Without it, your claims could be challenged or disallowed. The ATO frequently scrutinises car expense claims. If you're audited, your logbook will be the primary document they'll review to verify your deductions.
• Calculate Your Business-Use Percentage: The logbook allows you to accurately determine the exact percentage of your car's usage that was for work. This percentage is crucial when using the actual cost method to claim expenses.

What Do You Need To Record In Your Logbook?

To ensure your logbook meets ATO requirements, it must include:

• A continuous 12-week period: This period should represent your typical work-related travel patterns throughout the year.
• Detailed trip information for each work journey:
  • Date of travel
  • Start and end times
  • Odometer readings at the start and end of the trip
  • The specific purpose of the journey (e.g. "Client meeting at ABC Pty Ltd.")
  • Distance travelled for that trip
• Overall odometer readings: Record the odometer reading at the beginning and end of your 12-week logbook period.

How Long Is Your Logbook Valid?

• A logbook can be used for up to five years.
• A new 12-week logbook is mandatory if your work-related travel patterns change significantly due to a new job, relocation, or changes in your work responsibilities.

Whether you prefer the simplicity of the cents per kilometre method or the potential for larger deductions with the actual cost method, your logbook plays a role:

• Actual Cost Method: The logbook is essential for calculating the work-related portion of all your car expenses (petrol, registration, insurance, servicing, depreciation, etc.).
• Cents per Kilometre Method: While not mandatory, a logbook is an excellent way to track your total work-related kilometres (up to the 5,000 km limit) and provide evidence if the ATO asks how you calculated this figure.

Choosing Your Logbook Format

You have several options for keeping your logbook. Select the method that is the most convenient for you:

• Electronic Logbooks: Consider the ATO's free myDeductions app or other third-party apps that can even use GPS to track trips.
• Motor Vehicle Logbook Template: We provide a template you can download on our website. For more information, please visit here.

What Receipts Do You Need To Keep For Actual Claims?

• If you use the logbook method to claim actual expenses, your logbook is only half the story. It's crucial to keep detailed records of your car-related expenses.
• This includes:
  • Receipts for petrol or a reasonable estimate based on odometer readings
  • Invoices for other expenses such as registration, insurance, servicing, and repairs
  • Records of the car's purchase and any financing or loans used for the purchase
• Specific records for electric and hybrid cars are required, including receipts for charging stations, electricity bills and a calculation for charging at home.
• Use our spreadsheet to easily keep track of your Motor Vehicle expenses – Motor Vehicle Expenses Spreadsheet

Important Reminders And Common Mistakes To Avoid

• No Commuting Claims: Travel between home and your regular workplace is generally not deductible.
• Accuracy is Key: Ensure your logbook entries are precise and accurately reflect work-related vs. private use.
• Update When Necessary: If your circumstances have changed or the logbook is older than 5 years
• Claiming 100% Business Use for Vehicles: This is a red flag for the ATO.
• Rounding Kilometre Claims: Actual odometer readings should be used, not estimates.
• Claiming for Vehicles Not Owned or Leased by the Taxpayer: Generally, you need to own or lease the vehicle to claim expenses (unless there's a specific arrangement).
• Mixing Claim Methods: You must use either the cents per kilometre or the logbook method for a specific car in a given income year, not a combination (e.g. cents per km for fuel and actual costs for other expenses).

Need Help?

Contact us if you need assistance with your logbook and car expenses for your business.

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