Logbook Method Explained in Plain English (Australia)

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Who this page is for: Readers who want a plain-English overview of the logbook method before they decide how to approach a car claim.

Last reviewed: 2 April 2026

Short answer

The logbook method is one of the main ways people work out certain car-expense claims. It is record-heavy, so it usually makes the most sense when someone needs a more precise work-use percentage and is willing to keep the required evidence.

  • You usually need to have paid the cost yourself.
  • The expense should relate directly to earning income or running the business.
  • Only the work-related or business-use share is usually claimable for mixed-use items.
  • Records matter just as much as the expense itself.

What the logbook method is

  • It is a way of working out the work-related use percentage of a car using a logbook and supporting records.
  • It is not just a mileage estimate. The records are part of the method itself.
  • The method works best when the person can keep the evidence the ATO expects.

Related live page: Work-Related Car Expenses in Australia (2026 Guide).

When people use it

  • When work-related car use is significant and needs a supportable percentage.
  • When the person wants a method that tracks actual work use more closely than a rough estimate.
  • When the records can be maintained during the year instead of reconstructed later.

What records matter

  • A logbook that meets the current ATO requirements.
  • Odometer readings and other supporting vehicle records where required.
  • Receipts or other records for the costs the method relies on.
  • A clear record of the work purpose behind trips and the percentage used.

Related live page: What Records Do I Need for Work-Related Car Claims?.

Common mistakes

  • Starting with the method choice before understanding the record burden.
  • Keeping an incomplete logbook or leaving trip details too vague.
  • Mixing private travel into the calculation without removing it.
  • Treating the method as permanent without checking whether circumstances changed.

Frequently asked questions

Is the logbook method the only way to claim car expenses?

No. It is one method, and the right starting point is to check which options and records fit your situation.

Do you need receipts as well as a logbook?

The current ATO rules and setup matter here, so it is safer to think about the method as a package of records rather than just the logbook itself.

Can the logbook method help gig workers or tradies?

It can be relevant for people in mobile roles, but the decision still depends on the facts, the records and the current ATO rules.

Related guides

Use these next if you want the parent hub, a related spoke or a broader rules page.

Related live guides

Support pages

More related guides

If you want a closer occupation match or a narrower claim question, these are the best next steps.

Review note, sources and disclaimer

Reviewed by: Australia Tax Deductions editorial team

Last reviewed: 25 March 2026

How this page is framed: This page is written in plain English, anchored to official ATO guidance and designed as educational information only.

Methodology: See the Editorial Policy and Review Methodology pages for how the site handles source checking and updates.

Primary references

General educational information only. Tax outcomes depend on your circumstances, records, business structure and the current ATO rules. Check the latest official guidance or speak with a registered tax professional before acting on any deduction claim.