How Many KMs Can You Claim on Tax in Australia?

If you have searched “how many kms can you claim on tax”, you are asking the same question thousands of Australians ask every year.

Under the ATO’s cents per kilometre method, you can claim up to 5,000 work-related kilometres per car, per financial year, provided you meet the eligibility rules and can show how you worked out your claim.

That sounds simple enough, doesn’t it? Yet every tax season, many Australians either claim too little because they are unsure of the rules or claim too much and risk unwanted attention from the ATO. If you have been driving your own car for work, there is a good chance you could be entitled to a deduction. The key is making sure your claim is accurate and backed by the right records.

This guide explains exactly how the rules work, what you can claim, what you cannot claim, and how to avoid common mistakes.

Understanding Work-Related Car Expenses

Many people assume every kilometre they drive is tax deductible. That is one of the biggest misunderstandings around work-related car expenses.

The ATO only allows deductions for trips directly connected to earning your income. If you use your own car for eligible work travel, you may be able to claim a deduction using one of the approved methods.

Before you lodge your tax return, ask yourself a simple question:

Was the trip necessary for your work, or was it simply getting you to work?

That single question often makes the answer much clearer.

How Many KMs Can You Claim on Tax?

If you choose the cents per kilometre method, the ATO kilometre claim limit is 5,000 business kilometres per car each financial year.

This does not mean you automatically receive a deduction for 5,000 kilometres. You can only claim the number of kilometres you actually travelled for eligible work purposes.

The ATO also expects you to show how you calculated your estimate. You do not need a complete logbook for the entire year under this method, but your claim should be reasonable and based on evidence.

For example, you might use:

• Diary of work trips
• Calendar entries
• Work schedules
• Appointment records
• Travel notes
• Odometer readings

If the ATO reviews your claim, you should be able to explain exactly how you reached your total.

What Is the Cents per Kilometre Method?

The cents per kilometre method is one of the simplest ways to claim eligible car expense deductions in Australia.

Instead of calculating every individual running cost, the ATO provides a fixed rate for each eligible kilometre you travel. That rate already covers expenses such as:

• Fuel
• Registration
• Insurance
• Servicing
• Repairs
• Tyres
• Vehicle depreciation

Because these costs are already included in the cents per kilometre rate, you cannot claim them separately for the same vehicle under this method.

For the 2025–26 financial year, the rate is 88 cents per kilometre. The ATO reviews and updates this rate every 1 July, so it is worth checking the current figure before lodging your tax return, particularly if you are claiming for an earlier income year.

This method suits many employees who use their own car for work but do not drive extremely high business kilometres each year.

Which Work Trips Can You Claim?

Knowing which trips qualify is often more valuable than knowing the kilometre limit itself.

You can generally claim car expenses for travel such as:

• Driving between separate workplaces on the same day
• Visiting clients or customers
• Travelling to meetings away from your normal workplace
• Driving between different job sites
• Collecting supplies or equipment needed for work

These trips are directly connected with earning your income.

Which Trips Cannot Be Claimed?

Many taxpayers get caught out by ordinary commuting.

In most situations, travel between your home and your regular workplace is considered private travel. Even if you make the same drive every day for your job, it usually cannot be claimed.

There are limited exceptions, such as carrying bulky equipment that meets strict ATO requirements or travelling directly between multiple jobs.

If you are unsure, it is worth checking the ATO guidance before lodging your return. Making an incorrect claim may delay your assessment or lead to adjustments later.

Cents per Kilometre Method vs Logbook Method

The ATO provides another option for claiming work-related car expenses: the logbook method.

Both methods have advantages, depending on your circumstances.

Cents per Kilometre Method

This method may suit you if:

• You drive less than 5,000 eligible work kilometres.
• You want a simpler claim process.
• Your work travel is fairly consistent.
• You prefer not to maintain a detailed logbook.

Logbook Method

This method may suit you if:

• Your work travel exceeds 5,000 kilometres.
• Your business use makes up a large share of your driving.
• Your actual vehicle costs are high.
• You are willing to keep a valid logbook and detailed expense records.

Choosing the right method could make a noticeable difference to your tax deduction. A little preparation before tax time can often produce a more accurate result.

Records You Should Keep

Even though the cents per kilometre method is simpler, it is not a free pass to estimate random figures.

The ATO expects reasonable evidence supporting your claim.

Useful records include:

• Diary entries
• Digital calendars
• Work rosters
• Client appointment records
• Email confirmations
• Odometer readings
• Trip notes

Keeping these records throughout the year takes very little effort compared with trying to recreate months of travel from memory.

Common Mistakes That Can Reduce Your Claim

Many Australians either miss deductions or make claims that do not meet ATO rules.

Some common mistakes include:

• Claiming everyday travel between home and work
• Guessing kilometres without any supporting evidence
• Claiming more than 5,000 kilometres using the cents per kilometre method
• Claiming fuel separately when already using the cents per kilometre rate
• Forgetting to record work trips during the year

If any of those sound familiar, you are certainly not alone. Tax rules can be confusing, especially when your work pattern changes during the year.

How to Maximise Your Work Travel Tax Deduction

Nobody wants to pay more tax than necessary. At the same time, nobody wants to deal with questions from the ATO because their claim cannot be supported.

A sensible approach is to build good habits throughout the year.

Record work trips as they happen instead of relying on memory months later. Keep appointment records and work diaries organised. Review your total kilometres before tax time so you know which claim method is likely to work best.

These small habits often save both time and stress when it is time to lodge your return.

Should You Choose the Cents per Kilometre Method?

There is no single answer that suits everyone.

If your work-related driving is moderate and you value simplicity, the cents per kilometre method often works well.

If you spend a large amount of time driving for work and your vehicle costs are substantial, the logbook method could produce a larger deduction.

The best choice depends on your driving pattern, your expenses, and the records you have available.

Looking at both methods before lodging your return can help you avoid missing out on deductions you are legally entitled to claim.

Final Thoughts

Understanding how many kms you can claim on tax is only part of the picture. The real goal is making sure your deduction is accurate, supported by evidence, and fully compliant with ATO requirements.

Many Australians unknowingly leave money behind because they assume claiming is too complicated. Others claim expenses they are not entitled to and create unnecessary problems later.

If you use your own vehicle for work, now is a good time to review your travel records before tax season arrives. A little organisation today can make lodging your return much easier and help you claim every legitimate deduction available.

Frequently Asked Questions

How many kilometres can I claim without receipts?

Under the ATO’s cents per kilometre method, you can claim up to 5,000 eligible work-related kilometres per car each financial year without keeping receipts for individual running costs. You still need to show how you worked out your kilometres using reasonable evidence such as diaries, calendars, work schedules, or trip records.

What is the ATO kilometre limit?

The ATO kilometre claim limit for the cents per kilometre method is 5,000 work-related kilometres per car, per financial year. If your eligible work travel exceeds this amount, you may wish to consider the logbook method instead.

Can I claim travel from home to work?

In most situations, no. Regular travel between your home and your usual workplace is considered private travel and is not deductible. Some limited exceptions apply, such as carrying bulky equipment that meets the ATO’s requirements or travelling directly between separate jobs.

What records do I need for a kilometre claim?

You should keep records that support your work-related travel. These may include:

• Diary entries
• Work calendars
• Appointment records
• Email confirmations
• Trip notes
• Work rosters
• Odometer readings

These records help demonstrate how you calculated your claim if the ATO asks for evidence.

Is the cents per kilometre method better than the logbook method?

It depends on your circumstances. The cents per kilometre method is easier to use and suits many employees with moderate work travel. The logbook method may produce a larger deduction if you drive extensively for work and have high vehicle running costs. Comparing both methods before lodging your tax return can help you choose the option that provides the highest legitimate deduction.