Car tax return: How to claim car expenses

What car expenses can I claim on a tax return?

A car tax return is worth getting right: according to ATO Taxation Statistics, over 3.5 million Australians claimed work-related car expense deductions totalling approximately $8.5 billion in a single income year, an average of roughly $2,400 per claimant. A car tax return can reduce taxable income when the claim is accurate, but employees can only claim deductions for car expenses when they use their own vehicle for genuinely work-related travel. Travel between home and a regular workplace generally does not count.

If you are wondering how to claim car expenses on tax return forms correctly, the first step is separating private use from work use. The ATO car tax deduction rules are clear: only the work portion is deductible.

For small business owners, payroll managers and employees, this is where mistakes happen. People either underclaim because they are unsure, or they overclaim because they treat ordinary commuting as work travel. I saw this kind of admin pressure first-hand in construction, where teams often move between job sites, carry tools and use their vehicles every day. The right system makes the difference between a clean claim and a stressful ATO query.

Which expenses are most commonly claimed?

The most common work-related car expenses include:

• Fuel and oil
• Repairs and maintenance
• Registration
• Insurance
• Lease payments
• Interest on car loans, when the logbook method applies
• Decline in value, also called depreciation, when eligible

These car deductions are not claimed in full unless the car is used only for work. If your vehicle is used 60% for work and 40% privately, only the work portion of actual running costs can be claimed under the logbook method.

This also applies to gig economy workers and rideshare drivers. If your car is used to earn assessable income, those trips may be deductible, but you still need records that show business use versus private use.

Does the trip from home to work count?

In most cases, no. Driving from home to your regular workplace is private travel, even if you answer work calls on the way or pick up coffee for the team.

There are exceptions. A trip may count as work-related when you:

• Travel directly between two separate workplaces
• Drive from your regular workplace to a client site
• Travel from home to a temporary work site
• Carry bulky tools or equipment because there is no safe storage at work
• Travel between job sites during the day

For construction workers, trades and mobile service teams, that distinction matters. Driving from home to the same depot each morning is usually private. Driving from the depot to multiple job sites is usually work-related.

What documentation backs up a claim?

The ATO expects substantiation. That means receipts, invoices, written kilometre records, odometer readings and a valid logbook where required.

If you are new to claiming deductions, it helps to first understand what are tax deductions and how they reduce taxable income. From there, your records need to support the exact method you choose.

For a simple kilometre claim, written evidence of how you calculated work kilometres may be enough. For actual running costs, you need stronger record-keeping, including receipts and logbook data.

Which deduction methods can I use for car tax?

The ATO allows two methods for claiming work-related car expenses: the cents per kilometre method and the logbook method. The right choice depends on how much you drive for work, how well you keep records and whether you want to claim actual costs or use a simpler flat rate. Employees choose one method per car per income year.

If you are trying to calculate the best result, start with one practical question: do you drive enough for work to justify detailed records?

A plain-English summary of both methods

The cents per kilometre method is the simpler option. You claim a fixed rate for every work kilometre, up to the ATO limit. You do not claim separate fuel, insurance, registration or depreciation costs because the rate already accounts for them.

The logbook method takes more effort but can produce larger car deductions for drivers with high business use or higher vehicle costs. You calculate your business-use percentage using a valid logbook, then apply that percentage to your actual annual car expenses.

In plain terms:

• Use the cents per kilometre method when you want simplicity and drive moderate work kilometres.
• Use the logbook method when work use is high and you have the discipline, or digital tools, to keep accurate records.
• Run both calculations when you can. The better method is the one you can prove and that gives the stronger result.

Can I switch methods between years?

Yes. You can choose the method that gives the best outcome each income year, provided you meet the ATO requirements for that method.

There is no lock-in. If your work pattern changes, your claim can change too. For example, a site supervisor may use the cents per kilometre method in one income year, then switch to the logbook method when they start managing multiple projects across different locations.

That flexibility is helpful, but it only works if your records are ready.

What happens if I don’t keep records?

Without records, the ATO may reduce or disallow a claim. For employers, poor vehicle records can also affect fringe benefits tax outcomes. The ATO flags car fringe benefits, salary-packaged vehicles and employer logbook obligations as areas of review in its ATO FBT record-keeping requirements.

A simple routine can prevent most problems:

• Save receipts as soon as expenses occur
• Record work trips weekly, not months later
• Keep odometer readings at the start and end of the income year
• Store records digitally so they are easy to find

This is where Payroller can reduce the admin load for employers. When payroll records, employee information and related compliance documents sit in one place, tax time becomes less reactive.

How does the logbook method work?

The logbook method lets you claim the business-use percentage of all actual car running costs. To use it, you need to keep a valid logbook for at least 12 continuous weeks, recording each trip, the date, destination, purpose and odometer readings. That 12-week period establishes your business-use percentage, which you then apply to total annual running costs.

This method suits drivers with regular work-related car expenses and higher work use, but only if the record-keeping is reliable.

Step-by-step guide to completing a logbook

Here are the steps to deduct car expenses using a logbook:

1. Choose a representative 12-week period
   Pick a period that reflects your normal driving pattern. Do not choose an unusually busy period if it would inflate business use.
2. Record every trip
   Log both business and private trips. Leaving out private trips makes the business-use percentage unreliable.
3. Capture the right details
   For each trip, record:

• • Date
  • Start and end odometer readings
  • Kilometres travelled
  • Destination
  • Purpose of the trip

1. Calculate business-use percentage
   Add up business kilometres and divide them by total kilometres travelled during the logbook period.
2. Apply that percentage to annual costs
   If your business-use percentage is 70%, you can claim 70% of eligible running costs.
3. Keep records for five years
   Store the logbook, receipts and calculation notes. This supports tax compliance if the ATO asks questions later.

Good systems matter here. Paper logbooks get lost in gloveboxes. Digital record-keeping, logbook apps and GPS tracking reduce human error. Payroller can support employers by keeping payroll and related compliance records organised, so vehicle documentation is not scattered across emails, spreadsheets and filing cabinets.

For broader record retention obligations, Payroller’s guide to tax compliance is a useful next read.

When does a logbook expire?

A logbook can generally remain valid for five years if your driving pattern stays broadly the same. If your work use changes, you need a new logbook.

Examples of changes that may require a fresh logbook include:

• Moving from office-based work to field-based work
• Starting a new role with more client visits
• Reducing work travel after hiring extra staff
• Changing from one work site to multiple job sites

A logbook is not set and forget. It needs to reflect reality.

What are the most common logbook mistakes?

The biggest logbook mistakes are usually simple:

• Forgetting private trips, which inflates the business-use percentage
• Choosing the wrong 12-week period, especially one that does not reflect normal work
• Leaving out trip purpose, which weakens the claim
• Not keeping receipts, even though actual expenses are being claimed
• Relying on memory, which is unreliable months later

GPS-based records and logbook apps help because they capture trips in real time. For employers managing several vehicles, that can mean fewer gaps and faster responses if an ATO review occurs.

How does the cents per kilometre method work?

The cents per kilometre method allows you to claim a set rate for every kilometre you drive for work, up to a maximum of 5,000 kilometres per car per income year. You do not need to keep fuel receipts or track every vehicle expense, but you do need to show how you calculated your work kilometres. According to ATO work-related car expenses, the current rate is 88 cents per kilometre, up from 85 cents the prior income year.

This method is often the cleanest option for a straightforward car tax return.

Calculating your claim using cents per km

The formula is simple:

• Work kilometres × ATO rate = deduction

For example:

• 4,000 work kilometres × $0.88 = $3,520 deduction

You still need a reasonable basis for the kilometre number. That could include:

• Diary entries
• Calendar records
• Rosters
• Job sheets
• Regular route calculations
• Odometer notes

The ATO does not require a full logbook for this method, but it does expect a claim you can explain.

Who benefits most from this method?

The cents per kilometre method usually suits employees who:

• Drive fewer work kilometres
• Want a lower-admin method
• Do not have large actual car costs
• Prefer not to keep every receipt
• Have predictable work travel patterns

For many small business employees, sales staff, support workers and trades doing occasional site visits, this method balances savings and simplicity.

Common errors with this method

Common mistakes include:

• Claiming more than the allowed kilometre cap without switching to the logbook method
• Counting private trips as work trips
• Claiming home-to-work travel incorrectly
• Guessing kilometres without written support
• Trying to claim depreciation or fuel separately

The cents per kilometre method already accounts for running costs. Claiming extras on top creates double-counting and can put car deductions at risk.

What are the most common mistakes in car tax deductions?

The most common car tax deduction mistakes in Australia come down to three things: claiming private travel as work travel, failing to keep adequate records and choosing the wrong method for your situation. The ATO can compare claims against income, occupation and available records, so accuracy matters more than ever.

If your car tax return claim looks high, your records need to be strong enough to support it.

How to avoid triggering an ATO review

ATO review risk rises when a claim does not match the taxpayer’s work pattern. Red flags can include:

• High deductions compared with income
• High work kilometres for an occupation that is usually office-based
• No logbook for a large actual-cost claim
• Fuel receipts that do not match claimed kilometres
• GPS tracking or calendar data that conflicts with the claim
• Repeated round-number claims with no working notes

The best approach is simple: record first, claim second.

If you manage payroll or employee benefits, encourage staff to keep evidence throughout the income year. Waiting until lodgement season turns a record-keeping task into a guessing exercise.

What to do if you’ve made an error?

If you have lodged an incorrect claim, you can amend the return through myTax or through a registered tax agent. Acting before the ATO contacts you is the cleaner path.

A practical myTax correction process looks like this:

1. Log in to myTax.
2. Open the lodged return that needs correction.
3. Choose the amendment option.
4. Update the car expense section with the correct method and amount.
5. Keep notes explaining the change.
6. Save supporting records in case the ATO asks for them.

For employers, an internal review of vehicle records before year end can catch payroll and benefit reporting issues earlier.

What if you lose your logbook records?

Lost logbook records are a real problem. I have seen small businesses lose paper records through vehicle damage, staff turnover and plain old disorganisation.

If records are lost or destroyed, the ATO may accept other evidence, such as:

• Bank statements
• Fuel card data
• Calendar entries
• Job records
• Rosters
• Service records
• A statutory declaration explaining what happened

This is a last-resort position. It is far better to prevent the issue by backing up documents digitally. A cloud-based payroll and record system like Payroller helps keep employee and compliance records centralised, which reduces the risk of missing documents when you need them most.

How does depreciation affect car tax deductions?

If you use the logbook method, you can also claim depreciation on your vehicle as part of your actual car running costs. Depreciation accounts for the decline in value of the car over time, and the ATO sets rules around how this is calculated, including a car cost limit that caps the value used in the calculation.

This is one reason the logbook method can create stronger car deductions for high business-use drivers.

Understanding the ATO car cost limit

The ATO sets a maximum car cost for depreciation purposes each income year. If you buy a vehicle above that limit, you cannot calculate depreciation using the full purchase price.

The cap is designed to stop excessive claims on higher-priced vehicles. In practice, this means a business owner or employee with a more expensive car may not get a deduction that reflects the full amount they paid.

The business-use percentage still applies. If your depreciation amount is calculated and your work-use percentage is 60%, only 60% of the allowable depreciation is included in the claim.

How to calculate and claim depreciation

There are two common ways to calculate depreciation:

• Prime cost method
  This spreads the decline in value evenly over the effective life of the car.
• Diminishing value method
  This claims more of the decline in value earlier in the car’s life, then less over time.

You do not need to turn this into a maths lesson for every employee, but payroll and finance teams should know which method is being used and keep the calculation records.

Depreciation can be valuable, but it also creates more paperwork. That is why it tends to suit people who already have strong record-keeping habits.

Does depreciation apply to the cents per km method?

No. Depreciation is not separately claimed under the cents per kilometre method.

The ATO rate already includes an allowance for running costs, including decline in value. Claiming depreciation separately would double-claim the same cost.

This distinction matters when preparing a car tax return, especially for first-time claimants comparing the two methods.

What does fringe benefits tax mean for company vehicles?

When an employer provides a vehicle to an employee for private use, fringe benefits tax (FBT) applies. FBT is paid by the employer, not the employee, and is separate from income tax. For the current FBT year, the statutory formula applies a rate of 20% of the car’s base value regardless of kilometres travelled, according to the ATO fringe benefits tax guide for employers.

For employers, this is not just a tax calculation. It is a payroll, policy and compliance issue.

When does FBT apply to a vehicle?

FBT applies when an employer-owned or leased car is available for an employee’s private use.

“Available” is the trigger. The employee does not always need to use the vehicle privately. If the car is garaged at the employee’s home and they are allowed to use it privately, FBT may apply.

Common examples include:

• A company car used for weekend driving
• A work ute taken home and available for private trips
• A salary-packaged vehicle
• A pooled vehicle that is allocated to one employee for private access

The employer needs records that show when the vehicle was available, who used it and how private use was treated.

The statutory formula vs. the operating cost method

Employers generally calculate car fringe benefits using one of two approaches.

The statutory formula is simpler. It applies a set percentage to the car’s base value. This can be practical when records are limited, but it may not be the best result where business use is high.

The operating cost method works more like the individual logbook approach. The employer calculates total operating costs and reduces the taxable value based on business use, supported by a valid logbook.

For high business-use vehicles, the operating cost method can reduce FBT. But it asks more from the employer:

• Logbooks must be valid
• Operating costs must be recorded
• Private use must be identified
• Employee contributions must be tracked
• Records must be retained

This is where a payroll platform matters. Payroller gives employers a central place to manage payroll information and related compliance records, making it easier to keep vehicle benefits aligned with employee reporting.

The EV exemption employers should know

Eligible electric vehicles can receive favourable FBT treatment. The ATO explains the rules in its ATO electric cars exemption, which applies to eligible zero or low-emissions vehicles below the luxury car tax threshold, with plug-in hybrid treatment subject to a legislated transition point.

For employers, this can change the salary packaging conversation. An eligible EV can be a tax-effective employee benefit with no FBT liability, while still supporting workforce retention and cost savings.

There are pros and cons to salary sacrificing a vehicle:

• Pros
• Can reduce an employee’s taxable salary
• May bundle running costs into one arrangement
• Can be attractive for eligible EVs
• Gives employers a structured benefit option
• Cons
• Requires payroll accuracy
• May affect take-home pay and reportable fringe benefits
• Needs clear employee communication
• Can create extra employer record-keeping

For employers managing FBT obligations, Payroller’s tax compliance resources can help keep the admin grounded and practical.

How do recent tax changes affect car deductions?

The most relevant recent changes for car deductions are the updated ATO cents per kilometre rate and the FBT exemption settings for eligible electric vehicles. Employees using the **cents per kilometre method may see stronger deductions when the rate rises, while employers salary packaging EVs may be able to provide a more tax-effective benefit.

For payroll teams, the lesson is clear: outdated rates and old assumptions can create errors.

The cents per km rate increase and what it means

A higher cents per kilometre rate reflects rising vehicle running costs. For employees, the claiming process does not change. You still calculate work kilometres and multiply them by the ATO rate.

What changes is the result. The same work travel can produce a higher deduction when the rate increases.

For employers, this matters when helping staff understand vehicle allowance policies, reimbursement settings and payroll communications. Staff often ask payroll whether an allowance is taxed, whether it covers their costs and whether they can still claim.

Clear records make those conversations easier.

The EV FBT exemption and salary packaging

The EV FBT exemption has made salary-packaged electric vehicles more attractive for some employers and employees.

For businesses, this can affect:

• Fleet purchasing decisions
• Salary packaging policy
• Employee benefit design
• Payroll reporting
• FBT documentation
• End-of-year checks

The planning point is not just the car itself. It is the payroll process around it. If employee contributions, reportable benefits and eligibility records are not handled cleanly, the benefit can create more admin than expected.

Staying ahead of future changes

ATO rates and rules shift over time. Build a review into your end-of-financial-year process rather than waiting for lodgement pressure.

A useful review checklist includes:

• Check the latest ATO car expense rates
• Review vehicle allowance settings
• Review salary packaging arrangements
• Check FBT treatment for company vehicles
• Ask employees to update logbooks where work patterns changed
• Store supporting records before staff move roles or leave

Payroller helps reduce the risk of using outdated payroll information by keeping payroll workflows organised and easier to review.

How do I maintain proper records for a car tax return?

Good record-keeping is the foundation of any successful car tax return** claim. Without proper documentation, the ATO can disallow a deduction, and for employers, weak company vehicle records can push calculations toward less favourable FBT treatment. The standard is to keep records for five years from lodgement.

If you want to maximise deductions, start with records before you start with numbers.

What records do you actually need?

Your records depend on the method used.

For the cents per kilometre method, keep:

• Work kilometre calculations
• Diary notes
• Calendar entries
• Job sheets
• Rosters
• Route records

For the logbook method, keep:

• A valid logbook
• Opening and closing odometer readings
• Fuel receipts
• Insurance and registration records
• Repair and maintenance invoices
• Lease or loan interest records where relevant
• Depreciation calculations
• Notes explaining any unusual travel pattern

For employers, keep records that connect the vehicle, employee, payroll treatment and benefit reporting.

Digital vs. manual record-keeping

Manual records can work, but they fail easily. Paper fades, receipts get lost and handwritten odometer notes are easy to forget.

Digital tools are usually more reliable. Look for:

• GPS-linked logbook apps
• Cloud-based receipt storage
• Easy export options
• Clear employee access
• Payroll record alignment
• Audit-ready document storage

This is one of the simplest ways to maximise your tax return without scrambling at the end of the income year.

How Payroller supports compliant record-keeping

Payroller supports small businesses by keeping payroll management and related compliance records organised in one platform.

For employers managing vehicle records, that means fewer scattered files and a clearer trail for:

• Employee details
• Allowances
• Reimbursements
• Salary packaging records
• End-of-year reporting tasks
• Supporting documents for ATO queries

The goal is less time chasing paperwork and more confidence that your records match your payroll.

What are the best practices for filing car deductions?

Filing car deductions accurately comes down to choosing the right method, keeping records throughout the income year and lodging on time. Leaving the decision to the last week of tax season is where most errors happen. A simple routine, logging trips as they happen and storing receipts immediately, makes the process faster and cleaner.

If you want to know how to claim car expenses on tax return forms with less stress, build the habit before lodgement season.

Timing your claims and lodgement deadlines

Employees need to follow standard individual lodgement requirements, while employers have separate FBT obligations. Payroller’s guide to tax return dates is a practical reference when planning deadlines.

Do not leave vehicle claims until the final review. By then, missing receipts and vague travel notes are much harder to fix.

The financial benefit of a deduction also depends on the taxpayer’s marginal rate, so it helps to understand individual income tax brackets when comparing methods.

Tips for first-time claimants

If this is your first time claiming vehicle expenses, keep it simple:

• Start your logbook at the beginning of a normal work period
• Use an app to record trips automatically
• Separate private and work trips daily
• Save receipts as soon as you pay
• Check whether home-to-work travel is actually deductible
• Compare the logbook method with the cents per kilometre method before lodging
• Keep a short note explaining your calculation

A first claim does not need to be stressful. It just needs to be traceable.

When to involve a tax professional

Bring in a registered tax agent or BAS agent when the situation involves:

• Multiple company vehicles
• Salary-packaged cars
• FBT calculations across several employees
• High actual running costs
• Depreciation claims
• Lost records
• An ATO query or amendment

Payroller can make that handover cleaner by keeping payroll and employee records organised. The less time your adviser spends chasing documents, the more time they can spend checking the claim.

For employers and payroll professionals managing vehicle arrangements at scale, the combination of FBT obligations, record-keeping requirements and changing ATO rates creates real administrative pressure, especially around the end of the financial year. Payroller helps remove that pressure by centralising records, supporting payroll compliance and making employee benefit reporting easier to manage. If your team wants to reduce admin, respond faster to ATO queries and maximise deductions with better records, try Payroller and see how the right platform can make car tax return compliance and payroll management faster, simpler and less stressful.