Instant Asset Write-Off Explained: Thresholds, Eligibility and How to Claim It

What is the instant asset write-off?

The instant asset write-off (IAWO) lets eligible small businesses claim an immediate tax deduction for the business-use portion of an asset in the same income year it's bought and first used, instead of depreciating it over several years. It's a concession available under Subdivision 328-D of the Income Tax Assessment Act 1997, which governs simplified depreciation for small business entities.

For a café in Fitzroy buying a new coffee machine, or a plumber in Dandenong replacing a work van's tools, this concession can mean the difference between spreading a deduction over five years or claiming the whole thing this financial year — which materially changes your tax position and cash flow right now.

2025–26 threshold and the turnover test

To use the IAWO, your business must meet the small business entity turnover test: aggregated annual turnover under $10 million. This includes the turnover of any connected entities or affiliates, so a Melbourne business with related entities needs to combine figures across the group.

The dollar threshold per asset is set by the government each year via Treasury Laws Amendment instruments and has most recently sat at $20,000 for small business entities. This threshold has been extended year to year rather than made permanent, so it's essential to confirm the exact figure that applies for the 2025–26 income year before you commit to a purchase — legislation covering the current year may still be working its way through Parliament at the time you're reading this.

• Turnover under $10 million: eligible for the small business IAWO threshold.
• Turnover $10 million–$50 million: a separate, higher threshold may apply under different provisions — not the standard small business rules.
• Threshold applies per asset, not per business — so multiple assets under the threshold can each be written off in full.

Which assets qualify

Most tangible, depreciating assets used in carrying on your business qualify, provided the cost is below the relevant threshold. This is common across Melbourne's trades, hospitality, allied health and NDIS provider sectors:

• Trade tools and equipment — power tools, compressors, ladders, diagnostic equipment.
• Vehicles (work-use portion) — utes, vans, and trailers used for deliveries or trade work around the CBD, Docklands and outer suburbs.
• Office and technology assets — laptops, monitors, POS systems, security cameras.
• Hospitality equipment — commercial ovens, fridges, coffee machines, furniture for cafés in Richmond, Collingwood and Brunswick.
• Second-hand assets — these qualify too, as long as they meet the cost and business-use tests.

Assets must be used, or installed ready for use, for a taxable purpose during the income year — private-use portions are excluded and must be apportioned.

How to claim it in your tax return

The IAWO isn't a separate application — it's claimed through your income tax return for the year the asset was first used or installed ready for use. The general steps are:

• Confirm eligibility — turnover test, asset cost against the current threshold, and business-use purpose.
• Record the purchase correctly in your accounting system — code it to a fixed asset account, not a general expense, so your accountant or BAS agent can apply the correct treatment.
• Apportion for private use — if a ute is used 80% for business, only 80% of the cost is deductible.
• Claim it in the relevant year's tax return — your tax agent applies the deduction using the simplified depreciation rules under Subdivision 328-D.
• Keep records — tax invoices, finance contracts and a logbook or usage record for mixed-use assets, in line with ATO substantiation requirements.

The small business pool and assets above the threshold

If an asset costs more than the current threshold, it can't be immediately written off. Instead, it goes into the small business simplified depreciation pool. Under these rules:

• Assets are pooled together rather than depreciated individually.
• The pool is depreciated at 15% in the year the asset is added.
• In following years, the pool balance depreciates at 30% per year on a diminishing-value basis.
• If the pool balance falls below the current instant asset write-off threshold at year-end, the entire pool balance may be written off.

This matters for Melbourne businesses investing in higher-cost machinery, fit-outs, or fleet vehicles — the deduction is real, it's just spread rather than immediate.

Common mistakes Melbourne businesses make

• Assuming the threshold is permanent. It's re-legislated regularly and has changed multiple times in recent years — don't rely on last year's figure.
• Buying just before 30 June and expecting an instant claim when the asset isn't installed or ready for use until July.
• Forgetting the aggregated turnover test when related entities or franchise structures are involved.
• Not apportioning private use on vehicles and mixed-use technology, which can trigger an ATO adjustment later.
• Coding purchases as expenses in Xero instead of fixed assets, which creates cleanup work at tax time and risks an incorrect BAS claim.

How Xero makes this easy

Xero's fixed asset register lets you record the purchase, cost, and date first used, then track depreciation method against ATO rules once your accountant confirms the correct treatment. Set up correctly, this removes the guesswork at tax time and gives your bookkeeper a clean audit trail — particularly useful if the ATO ever reviews an asset claim.

For Melbourne businesses running multiple locations — a second café site in Northcote, or a second van for a growing electrical business — keeping the asset register current in Xero throughout the year (not just at tax time) means your accountant can make fast, accurate decisions on whether to claim the write-off or pool the asset.

The instant asset write-off is a genuinely useful concession, but it rewards businesses that plan purchases around the financial year and record them properly from day one. Before your next equipment, vehicle or technology purchase, confirm the current threshold, check your aggregated turnover, and make sure the asset will be installed and ready for use before 30 June if you want to claim it this financial year. If in doubt, talk to your bookkeeper or tax agent before you sign — it's far cheaper than fixing it after lodgement.