The instant asset write-off can allow eligible Australian small businesses to claim an immediate deduction for the business-use portion of qualifying assets.
But buying a truck for your business does not automatically mean you can immediately write off the entire purchase price.
For most commercial truck buyers, the most important rule is the asset threshold.
From 1 July 2026, eligible small businesses with aggregated annual turnover below $10 million that use the simplified depreciation rules can immediately deduct eligible depreciating assets costing less than $20,000 per asset.
The $20,000 threshold is now permanent.
That means:
Where a truck costs $20,000 or more, depreciation will generally become more relevant.
Whether you buy the truck:
does not by itself determine instant asset write-off eligibility.
The business, asset cost, business use, timing and applicable tax rules all matter.
The Asset Finance Shop (TAFS) primarily arranges chattel mortgage finance for commercial trucks and can finance eligible new and used vehicles purchased through dealerships, private sellers and auctions through access to more than 80 bank and non-bank lenders.
This guide explains the instant asset write-off for trucks in 2026, including the threshold, eligibility rules, dealer purchases, private sales, auctions, depreciation, GST and how financing fits into the transaction.
The instant asset write-off is part of the simplified depreciation rules available to eligible Australian small businesses.
Normally, the cost of a depreciating business asset is claimed over time.
Where an eligible asset falls below the applicable threshold, an eligible small business may instead be able to claim the business-use portion of its cost as an immediate deduction in the income year in which the asset is first used or installed ready for use.
From 1 July 2026, the permanent threshold is:
Less than $20,000 per eligible asset.
The threshold applies separately to each asset.
Eligible new and second-hand assets can both qualify.
The 2026 calendar year crosses two Australian income years.
For assets first used or installed ready for use between 1 January 2026 and 30 June 2026, the $20,000 instant asset write-off extension for the 2025-26 income year applied to eligible small businesses.
That extension covered eligible depreciating assets first used or installed ready for use through 30 June 2026.
From 1 July 2026, the $20,000 threshold became permanent.
Eligible small businesses can continue to immediately deduct the taxable-use portion of qualifying assets costing less than $20,000 without waiting for another annual extension.
The legislation applies the permanent threshold to eligible depreciating assets first used, or first installed ready for taxable use, from 1 July 2026.
Broadly, an Australian business generally needs to:
Some assets are excluded from the simplified depreciation rules, so eligibility should be confirmed with your accountant.
Potentially.
A truck is not automatically excluded just because it is a commercial vehicle.
The key issue for most truck purchases is price.
For example:
Potentially eligible if the business and asset meet the other requirements.
Potentially eligible.
Does not fall below the threshold.
Does not qualify for the $20,000 instant asset write-off.
Does not qualify for the $20,000 instant asset write-off.
For most normal commercial truck purchases, depreciation will therefore be more relevant.
Yes.
The threshold applies per eligible asset.
For example, an eligible business could potentially purchase:
Trailer: $15,000
Workshop equipment: $8,000
Other eligible equipment: $12,000
and assess each qualifying asset separately.
The combined expenditure being more than $20,000 does not automatically prevent each asset from being considered individually.
Potentially, but in practice most new commercial trucks cost far more than $20,000.
A new:
will usually exceed the instant asset write-off threshold.
The truck may still generate tax deductions through depreciation and other eligible business expenses.
It simply will not generally qualify for the immediate $20,000 write-off.
Yes, eligible second-hand assets can potentially qualify.
The instant asset write-off is not restricted to brand-new assets.
This makes it potentially more relevant to some:
The purchase still needs to satisfy all other eligibility requirements.
Buying from a dealer does not automatically make a truck eligible.
The asset cost and business eligibility still determine whether the instant asset write-off can apply.
However, a dealership transaction can make documentation relatively straightforward.
You will generally have records showing:
These records can help establish the transaction for both tax and finance purposes.
Consider an owner-operator purchasing a used rigid truck from a dealer.
Purchase price: $18,500
If the truck is an eligible depreciating asset and the business satisfies the small business requirements, the truck may potentially fall under the instant asset write-off.
Now consider the same buyer purchasing:
Used rigid truck: $85,000
The fact that the truck was bought from a dealer does not change the threshold.
It exceeds $20,000 and would generally need to be dealt with under the applicable depreciation rules.
Potentially.
Buying a truck from a private seller does not automatically prevent the truck from qualifying for depreciation or the instant asset write-off.
The business still needs to establish:
The biggest difference often relates to documentation and GST.
Consider:
Truck: Used light truck
Private-sale price: $17,000
If the business satisfies the relevant small-business requirements and the truck is an eligible depreciating asset, it may potentially qualify.
The buyer should retain evidence such as:
A private transaction does not eliminate the need for proper records.
A private seller may not be registered for GST and may not charge GST on the sale.
That can produce a different GST outcome from buying a truck from a GST-registered dealership.
Do not assume:
Private sale = GST credit
or:
Financing the purchase = GST credit.
GST depends on the underlying transaction.
Your accountant should confirm the correct treatment.
Potentially.
An auction purchase is still an asset purchase.
The instant asset write-off rules do not simply exclude a truck because it was bought at auction.
The same key questions apply:
For most auction trucks valued above $20,000, depreciation will instead be relevant.
A business wins an older truck at auction for:
$19,000
Additional costs may affect the relevant tax cost of the asset, so the business should not assume the hammer price alone determines eligibility.
Auction fees, transport, installation or other amounts may need to be considered when calculating the relevant asset cost.
Speak with your accountant before relying on the write-off based solely on the bid price.
No, not simply because money is borrowed.
The finance structure and the tax treatment are separate.
Consider:
Purchase price: $18,000
Paid in cash: Yes
Potentially eligible if all other conditions are satisfied.
Purchase price: $18,000
Financed: Yes
Potentially eligible if all other conditions are satisfied.
Purchase price: $150,000
Financed: Yes
Does not become eligible simply because it was financed.
The threshold applies to the asset cost, not the amount of cash contributed upfront.
Potentially.
Financing the truck does not automatically prevent depreciation.
TAFS primarily arranges commercial truck finance using chattel mortgage structures, where the business owns the truck from settlement while the lender registers security over it.
Depending on the business and asset, the tax considerations can then include:
These should be considered separately from the loan repayment.
Not simply because you finance less.
Consider:
Truck purchase price: $90,000
Deposit: $30,000
Finance: $60,000
The truck does not become a $60,000 asset because that is the loan amount.
It also does not become a $30,000 asset because that is the cash contribution.
The purchase price and relevant tax cost need to be considered separately from the finance structure.
Do not assume so.
Consider:
Replacement truck: $75,000
Trade-in: $60,000
Cash difference: $15,000
The business has only $15,000 left to fund.
But that does not automatically mean it purchased a $15,000 truck for tax purposes.
The replacement truck and disposal of the existing truck are separate tax events that need to be treated correctly.
Generally, no.
The write-off is not a $20,000 deduction that can simply be applied against every larger asset.
Consider:
Truck: $150,000
The business does not generally treat it as:
$20,000 instant deduction
plus:
$130,000 depreciation.
If the truck costs $20,000 or more, it generally falls outside the immediate write-off and moves into the applicable depreciation treatment.
For eligible small businesses using simplified depreciation, higher-value depreciating assets are generally placed into the small business depreciation pool.
Newly acquired pooled assets are generally deducted at 15% in the first income year, while the general pool is generally deducted at 30% in subsequent income years.
This is likely to apply to far more commercial trucks than the immediate write-off.
Consider a small transport business purchasing:
Truck: $150,000
The business:
The truck exceeds the $20,000 threshold.
It does not receive a $150,000 immediate deduction under the instant asset write-off.
Instead, depreciation will generally apply under the relevant rules.
There may also be separate tax considerations for:
Potentially.
The relevant tax cost can depend on whether the business is registered for GST and entitled to input tax credits.
For a GST-registered business entitled to claim the full GST credit, the claimable GST component is generally excluded from the asset's cost for depreciation purposes.
For a business that is not registered for GST, GST generally forms part of the relevant cost.
This means two businesses buying an asset for the same invoice price could potentially have different relevant tax costs.
Confirm the calculation with your accountant.
The purchase date is not the only date that matters.
For instant asset write-off purposes, the asset generally needs to be:
first used
or:
installed ready for use
during the relevant income year.
That is an important distinction.
Not automatically.
Consider:
Truck ordered: 15 June
Deposit paid: 15 June
Truck delivered and ready for work: 25 June
Truck ordered: 15 June
Deposit paid: 15 June
Truck delivered and ready for work: 15 July
The timing of the potential deduction may differ because the rules focus on when the eligible asset is first used or installed ready for use.
Do not rely solely on the invoice or deposit date.
For a normal commercial truck, the relevant question is usually whether the truck is available and ready to perform its intended business function.
For example, a truck may still require:
before it is actually ready to operate.
If timing around financial year-end is important, confirm the position with your accountant.
A cab chassis may require additional equipment before it becomes the finished business vehicle.
For example:
Cab chassis purchased: May
Tipper body installed: July
The timing and total asset cost can become more complicated than a standard ready-to-drive truck purchase.
Do not assume the original chassis invoice alone determines the write-off.
Additional costs can affect the asset's tax treatment.
Examples include:
Whether an item is a separate depreciating asset or forms part of the truck's cost depends on the circumstances.
Your accountant should determine how the modifications should be treated.
No.
A write-off is a tax deduction.
It reduces taxable income.
It does not mean:
For example:
Eligible deduction: $18,000
does not automatically mean:
Tax refund: $18,000.
The actual benefit depends on the business's taxable position and applicable tax rate.
Generally, the business need should come first.
A truck may make commercial sense because it:
A tax deduction can improve the overall financial outcome.
It should not be the only reason to buy the asset.
Tax treatment and funding should also be considered separately.
Consider:
Truck: $180,000
Available business cash: $220,000
Cash remaining:
$40,000
No finance repayment.
No finance interest.
But much less working capital.
The business retains more cash for:
The trade-off is:
The fact that a truck is financed does not automatically change whether it is depreciated.
Do not assume so.
A commercial truck finance repayment generally includes:
The amount reducing the loan balance.
The cost of borrowing.
Eligible business-use interest may potentially be deductible.
The truck itself is dealt with separately under the applicable depreciation rules.
For example:
Monthly repayment: $5,000
does not automatically mean:
Monthly tax deduction: $5,000.
Potentially.
Where money is borrowed for an income-producing business asset, eligible business-use interest may potentially be deductible.
The actual deduction depends on:
Your accountant should confirm the applicable treatment.
Potentially.
Eligible business-use expenses can include items such as:
These are separate from depreciation and the instant asset write-off.
The business portion matters.
For example:
Business use: 80%
Private use: 20%
Eligible claims may need to be apportioned.
This can affect:
A prime mover used only for transport work will generally have a different use profile from a dual-purpose ute.
|
Purchase method |
Instant write-off potentially available? |
GST position |
Extra considerations |
|
Dealer |
Yes, if eligible |
Dealer may charge GST |
Invoice and delivery records |
|
Private sale |
Yes, if eligible |
Seller may not charge GST |
Ownership and purchase records |
|
Auction |
Yes, if eligible |
Depends on auction transaction |
Fees, invoice, settlement timing |
The purchase method does not replace the normal eligibility rules.
From a finance perspective, each purchase can also look different.
Generally straightforward because the seller provides a commercial invoice and vehicle information.
Can involve additional:
Can involve:
TAFS can finance eligible new and used trucks purchased through dealers, private sellers and auctions, subject to lender criteria.
Where possible, completing an initial finance assessment before bidding can be useful.
You can establish:
The final vehicle will still need to meet the lender's asset criteria.
Potentially.
An initial truck finance assessment can often begin before the final vehicle has been selected.
The broker can review:
Once the truck is selected, the vehicle details are added to the application.
Keep clear documentation supporting:
The ATO notes that businesses should retain records such as invoices, receipts and delivery documentation to support instant asset write-off claims.
Before assuming a truck qualifies, work through these questions.
Before relying on the instant asset write-off, ask:
Once you understand the tax position, ask:
TAFS can assist Australian businesses financing eligible:
TAFS primarily arranges chattel mortgage finance and has access to more than 80 bank and non-bank lenders for commercial asset finance.
A typical process can include:
Tax treatment should be confirmed separately with your accountant.
Eligible small businesses using simplified depreciation can potentially claim an immediate deduction for the business-use portion of qualifying assets costing less than $20,000.
From 1 July 2026, the $20,000 threshold is permanent.
The business generally needs aggregated annual turnover below $10 million.
No.
The asset needs to cost less than $20,000.
Not under the $20,000 instant asset write-off.
The truck would generally need to be considered under the applicable depreciation rules.
Generally, no.
The threshold determines whether the asset qualifies for immediate deduction.
Potentially.
Eligible second-hand assets can qualify.
Potentially.
Buying from a dealer does not change the threshold.
Potentially.
The business still needs evidence of the purchase and must satisfy the normal eligibility requirements.
Potentially.
Auction purchase does not automatically prevent eligibility.
They may affect the relevant tax cost depending on the nature of the expense.
Confirm the treatment with your accountant.
No, not simply because the truck is financed.
No.
Cash versus finance does not by itself determine whether the asset meets the write-off rules.
No.
A deposit reduces the finance amount, not automatically the relevant asset cost.
Do not assume so.
The trade-in and replacement purchase need to be considered separately.
Eligible businesses using simplified depreciation generally place higher-value eligible depreciating assets into the small business pool rather than claiming the immediate write-off.
Under the small business simplified depreciation pool, newly acquired assets are generally deducted at 15% in the first year, with the pool generally depreciated at 30% thereafter.
Timing depends on when the asset is first used or installed ready for use, not simply when a deposit is paid.
Eligible business-use interest may potentially be deductible, subject to the circumstances.
Do not assume so.
Principal and interest should be considered separately.
Potentially where the business and transaction satisfy the normal GST requirements.
Yes, subject to lender criteria.
Potentially through selected lenders.
Potentially, subject to lender and asset criteria.
TAFS has access to more than 80 bank and non-bank lenders for eligible commercial asset finance.
The 2026 instant asset write-off can be useful for eligible lower-value commercial assets.
But most working trucks in Australia will cost more than $20,000.
For those purchases, the bigger questions are usually:
TAFS can arrange eligible truck finance for new and used vehicles purchased through dealers, private sellers and auctions and compare suitable options through access to more than 80 bank and non-bank lenders.
Your accountant can then determine the correct tax treatment for the truck and business.
The Asset Finance Shop (TAFS) is a commercial asset finance brokerage based in Sydney. Information on this page is general in nature and doesn’t take your personal circumstances into account. Speak to a TAFS broker for options tailored to your business, and to your accountant regarding tax treatment.