Car Loans 2026-01-23 โ€ข 3 min read

Claim Interest on Car Loan? Avoid Costly Mistakes

Confused about claiming car loan interest? Discover the proven methods to maximize your tax benefits today. Donโ€™t leave money on the table!

Claim Interest on Car Loan? Avoid Costly Mistakes
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Can You Claim Interest on a Car Loan?

Navigating the intricacies of car loans can be daunting, especially when it comes to understanding what expenses you can claim as tax deductions. If you're an Australian wondering whether you can claim interest on your car loan, you're not alone. Many find this aspect of car financing confusing, yet it's crucial to get it right to maximise your financial benefits.

Understanding Car Loan Interest Claims

At its core, the ability to claim interest on a car loan in Australia hinges on how you use the vehicle. If you're using your car for business purposes, either partially or fully, the interest on your car loan may be deductible. However, if the vehicle is solely for personal use, claiming the interest is not typically an option.

Determining Eligibility and Key Information

To determine whether you can claim interest on your car loan, you need to assess the vehicle's usage. The Australian Taxation Office (ATO) allows deductions for vehicles used for business purposes. Here are some critical aspects to consider:

  • Percentage of Business Use: You can only claim the percentage of interest that corresponds to the percentage of business use of the vehicle.
  • Loan Documentation: Keep detailed records of the loan, showing interest payments and the business use percentage.
  • Logbook Method: Maintain a logbook for at least 12 continuous weeks to establish your business use percentage.
AspectEligibilityDetails
Business Use PercentageYesClaim interest proportionate to business use.
Personal UseNoInterest is not deductible for personal use.
DocumentationYesMaintain records to substantiate claims.

Step-by-Step Guide to Claiming Car Loan Interest

  1. Determine Business Use: Start by calculating the percentage of time your car is used for business versus personal use. This can be done using a logbook or by estimating based on your work-related travel.
  2. Gather Documentation: Collect all necessary loan documents, including statements showing interest paid, to support your claim.
  3. Calculate Deductible Interest: Apply the business use percentage to the total interest paid to determine the deductible amount.
  4. Lodge Your Tax Return: When completing your tax return, include the deductible interest amount in your claims. Be prepared to provide documentation if required by the ATO.

Expert Tips and Considerations

As you navigate the process of claiming interest on a car loan, consider these expert tips:

  • Consult a Tax Professional: Tax laws can be complex. Consulting with a professional can ensure you're maximising your deductions while remaining compliant.
  • Review Loan Terms: Understanding your loan's interest rate structure and payment schedule can help you accurately calculate your deductions.
  • Utilise Esteb and Co's Resources: With access to over 83 lenders, Esteb and Co can provide tailored advice on refinancing options that may offer better rates or conditions, potentially impacting your interest deductions.

Frequently Asked Questions

  • Can I claim the full interest amount if I use my car for business? No, you can only claim the portion of interest that corresponds to the percentage of business use.
  • What if I use my car for both personal and business purposes? You can claim interest based on the percentage of time the car is used for business. Maintain a logbook for accuracy.
  • Do I need to keep a logbook? While not mandatory, a logbook is a reliable way to substantiate your business use claims.
  • Can I claim interest if Iโ€™m self-employed? Yes, self-employed individuals can claim interest on car loans, provided the vehicle is used for business purposes.
  • What happens if my business use changes? Adjust your claims to reflect any changes in business use percentage and update your logbook accordingly.
  • How do I prove my business use percentage? Documentation such as a logbook or detailed travel records can substantiate your claims.
  • Can Esteb and Co help me find a better car loan rate? Absolutely. Esteb and Co can leverage their panel of 83+ lenders to find competitive rates that suit your financial situation.

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Ricky Esteb - Licensed Mortgage Broker
Richard (Ricky) Esteb
Licensed Mortgage Broker & Founder
Credit Rep #574071 ACN 681 636 056 83+ Lender Panel

With direct experience helping Australians secure home loans, car finance, and business funding, Ricky founded Esteb and Co to bring transparency and technology to mortgage broking.

โœ“ Verified & Last Reviewed: 2026-01-23 | Content meets ASIC regulatory requirements