When you buy an ASIC miner or GPU rig for your mining operation, you're not just purchasing hardware — under Australian tax law, you're acquiring a depreciating asset. The ATO allows eligible miners to claim that depreciation as a deduction against their mining income, reducing taxable income year over year, or potentially writing off the full cost upfront.
The catch is that depreciation deductions are only available to miners the ATO classifies as running a business. If you're classified as a hobby miner, the rules are entirely different. Getting this distinction right is the foundation of any mining tax strategy in Australia.
This guide explains how hardware depreciation works under ATO rules, what methods are available, and what you need to document to support your claim. It is not tax advice — always consult a registered tax agent or accountant familiar with cryptocurrency before lodging.
Hobby Miner vs Business Miner: The Classification That Changes Everything
The ATO's treatment of your mining income and expenses depends entirely on whether your activity is classified as a business or a hobby. This distinction isn't based on the size of your operation — a single rig can qualify as a business if it's organised and run with a genuine profit intent.
The ATO considers a range of factors when assessing classification:
- Whether you mine with a genuine intention to make a profit
- The regularity and scale of your activity
- Whether you operate in a business-like manner (records, separate accounts, documented processes)
- Whether you have relevant knowledge or use professional advice
- Whether the activity is planned and organised rather than ad hoc
The tax outcomes are significantly different between the two classifications:
Hobby miners
Mining rewards are not treated as assessable income at the time of receipt — instead, they are treated as capital asset acquisitions. When the coins are later sold or disposed of, Capital Gains Tax (CGT) applies. Critically, hobby miners cannot claim deductions for hardware, electricity, or any other mining expenses.
Business miners
Mining rewards are treated as ordinary assessable income in the year received, valued at the AUD market price on the date of receipt. In return, business miners can claim deductions for all expenses directly related to earning that income — including hardware depreciation, electricity, repairs, internet costs, and relevant software.
For more context on how the ATO taxes mining income broadly, see our detailed guide: ATO Crypto Mining Tax Guide 2026: What Australian Miners Need to Declare
How Hardware Depreciation Works Under Division 40
Assuming your mining qualifies as a business, your ASIC miners and GPU rigs are depreciating assets under Division 40 of the Income Tax Assessment Act 1997. This means you can claim a deduction for the decline in value of the asset over its effective life.
There are two core depreciation methods available:
Prime Cost Method
Deducts the asset's cost evenly over its effective life. The annual deduction is calculated as:
Annual deduction = Asset cost × (Days held ÷ 365) × (100% ÷ Effective life in years)This method produces lower deductions in early years but is predictable and straightforward to apply.
Diminishing Value Method
Deducts a fixed percentage of the asset's remaining book value each year, front-loading larger deductions in the earlier years of ownership. The formula is:
Annual deduction = Base value × (Days held ÷ 365) × (200% ÷ Effective life in years)For ASIC hardware — which depreciates rapidly in real-world value due to rising network difficulty and newer hardware releases — the diminishing value method often better reflects the economic reality of the asset's decline.
Once you choose a depreciation method for a given asset, you cannot change it. Choose carefully, and document your rationale.
Effective Life: How Long Does the ATO Think Your Miner Will Last?
The "effective life" of an asset is the number of years over which you spread depreciation. The ATO publishes a schedule of standard effective lives in Taxation Ruling TR 2024/4, but for cryptocurrency mining hardware — a relatively recent asset class — there is no specific ATO determination for ASIC miners as at 2026.
In the absence of a specific determination, you have two options:
Use the Commissioner's determination for the closest comparable asset
Computers and electronic equipment typically carry an ATO effective life of 3–4 years. Many tax agents apply this to ASIC hardware as the closest comparable category.
Self-assess a shorter effective life
If you can demonstrate that your hardware has a shorter useful life than the standard determination — for example, due to the rapid pace of ASIC obsolescence, where a miner purchased today may be uneconomical within 2–3 years as network difficulty rises — you can self-assess a shorter effective life. The ATO permits this provided you keep records substantiating your reasoning.
Given the real-world depreciation rate of ASIC miners in the current market, many miners and their accountants apply a self-assessed effective life of 2–3 years. This is worth discussing with a registered tax agent, as the appropriate figure will depend on the specific hardware and your individual circumstances.
For context on how mining hardware holds its real-world value in Australia, see our guide: Mining Hardware Resale Value in Australia: Which ASICs Hold Their Price Best?
The Instant Asset Write-Off: Claim It All in Year One
For eligible small business miners, the instant asset write-off (IAWO) allows you to claim the full cost of a qualifying asset as a deduction in the year it was first used or installed ready for use — rather than spreading the deduction over multiple years.
For the 2025–26 financial year, the current rules are:
- Aggregated annual turnover under $10 million
- Asset cost under $20,000 per asset (excluding GST if you're GST-registered)
- The asset must be first used or installed ready for use between 1 July 2025 and 30 June 2026
- You must use the simplified depreciation rules — you cannot apply the IAWO while using the general depreciation system
- Only the business-use portion of the cost is deductible if the asset has any private use
The $20,000 threshold applies on a per-asset basis. This means you can instantly write off multiple miners purchased in the same financial year, provided each individual asset costs less than $20,000. A miner costing $25,000 does not qualify for the IAWO but can be placed in the small business depreciation pool (see below).
Important timing note: Paying for or ordering a miner is not sufficient — the asset must be physically delivered and installed ready for use by 30 June. If you order in June and it arrives in July, the write-off belongs to the following financial year.
After 30 June 2026, the IAWO threshold is legislated to revert to $1,000 per asset unless Parliament extends it. Check the current ATO position before purchasing with this deduction in mind.
Assets Over $20,000: The Small Business Depreciation Pool
Commercial-grade ASIC miners — such as the Antminer S21 Pro, WhatsMiner M30S, or Canaan Avalon A1346 — are likely to cost more than $20,000, which places them outside the instant asset write-off. These assets are instead placed into the small business simplified depreciation pool, which applies:
- 15% deduction in the first income year the asset is added to the pool
- 30% deduction each subsequent income year, applied to the declining pool balance
Multiple assets can sit in the same pool. When the total pool balance falls below the IAWO threshold, the entire remaining balance can be written off immediately.
What ASIC Hardware Can You Depreciate?
Any hardware used directly in your mining business is a depreciating asset for Division 40 purposes. This includes:
Bitcoin ASIC Miners
- Bitmain Antminer S21 Pro 234 TH/s — 3510W, BM1370 5nm chip
- Bitmain Antminer S21 151 TH/s — 2643W SHA-256
- Bitmain Antminer S19K Pro 120 TH/s — 2760W SHA-256
- MicroBT WhatsMiner M30S 94 TH/s — 3400W SHA-256
- MicroBT WhatsMiner M31S+ 84 TH/s — 3360W SHA-256
- Canaan Avalon A1346 110 TH/s — 3300W SHA-256
- Canaan Avalon A1246 90 TH/s — 3420W SHA-256
- Canaan Avalon Q 90 TH/s — Wi-Fi, 18.6 J/TH
- Canaan Avalon Nano 3S 6 TH/s — 140W desktop miner
- Gamma 602 Bitcoin Solo Miner — 1.2–1.8 TH/s, ~15W
- NerdQX 8 TH/s Open-Source Solo Miner — ~20W, BM1370
Altcoin ASIC Miners
- Fluminer L1 Dogecoin/Litecoin Miner — 5.3 GH/s Scrypt, 1200W
- Goldshell Mini Doge III — 700 MH/s Scrypt, 400W
- IceRiver KS0 Ultra Kaspa Miner — 400 GH/s KHeavyHash, 100W
- iPollo V2X ETC Miner — 1200 MH/s ETCHash, 165W
- Jasminer X4-Q ETC Miner — 1040 MH/s EtHash, 480W
- iPollo G1 Mini Grin Miner — 1.2 GH/s Cuckatoo32, 100W
- Goldshell SC-LITE Siacoin Miner — 4.4 TH/s, 950W
- Lucky Miner LG07 — 11 MH/s Scrypt, 12W
Supporting infrastructure directly used in your mining business — such as an open frame mining rig chassis, modular ATX mining PSU, or dedicated mining motherboard — may also be depreciable. Discuss the treatment of ancillary assets with your tax agent.
What Records Do You Need to Keep?
The ATO requires business taxpayers to retain records for a minimum of five years. For mining hardware depreciation, your records should include:
- Tax invoices for all hardware purchases, clearly showing the supplier, date, GST, and asset description
- Delivery and installation records showing when the asset was first used or installed ready for use
- Business-use calculation — if the hardware has any private use, document how you've apportioned the deductible percentage
- Depreciation schedule — a record of each asset, its cost, effective life, method chosen, and deduction claimed each year
- Pool balance records if you're using the small business depreciation pool
- Evidence of business intent — correspondence, pool configuration screenshots, mining income records, and anything else demonstrating you operated with commercial intent
Modern accounting software (Xero, MYOB, or a crypto-specific tool) can automate much of the depreciation schedule tracking. Using a crypto tax platform that integrates pool payout data will also simplify the income side of your tax return.
What About GST?
If your mining business is registered for GST, you may be able to claim the GST component of hardware purchases as an input tax credit — effectively recovering the GST cost of the hardware. The depreciable cost of the asset is then the GST-exclusive price.
Whether mining itself constitutes a taxable supply for GST purposes is a nuanced area that depends on your specific activities and entity structure. This is another reason to work with an accountant experienced in cryptocurrency taxation.
Disposal and the Capital Gains Interaction
When you sell or dispose of a mining asset — either by selling the hardware or retiring it — you may trigger a balancing adjustment under Division 40. If the proceeds exceed the remaining book value, you have a taxable gain. If the proceeds are less, you have a deductible loss.
For ASIC hardware, disposals often occur well below the depreciated book value — particularly for older generation machines — which can generate a deductible balancing loss in the year of disposal. This is another reason accurate depreciation records matter: the balancing adjustment calculation depends entirely on the asset's documented cost history.
Mining hardware tends to depreciate quickly in the real world. Understanding how different machines hold their resale value can inform both purchasing decisions and depreciation planning: Mining Hardware Resale Value in Australia: Which ASICs Hold Their Price Best?
Mining vs Buying: The Tax Angle
Hardware depreciation is one of the structural tax advantages that can favour mining over simply buying cryptocurrency — particularly for operations with genuine business scale. Buying Bitcoin attracts CGT on disposal but offers no deductions during the holding period. A mining business, by contrast, can offset mining income with hardware depreciation, electricity, and operating costs throughout the year.
Whether this advantage outweighs the operational costs and electricity burden of running hardware in Australia depends on your specific situation. For a broader comparison of the two approaches: Mining vs Buying Crypto: Which Is Better in 2026?
Key Takeaways for Australian Miners
- Hardware depreciation deductions are only available to business miners, not hobby miners — your classification matters.
- For 2025–26, eligible small businesses can instantly write off assets under $20,000 in the year first used, on a per-asset basis.
- Assets over $20,000 enter the small business depreciation pool at 15% in year one, then 30% per year on the declining balance.
- ASIC hardware has no specific ATO effective life determination — most practitioners apply a computer/electronics determination or self-assess a shorter life given the rapid pace of ASIC obsolescence.
- Records are everything: tax invoices, installation dates, business-use apportionment, and depreciation schedules must be kept for five years.
- This post is general information only. Consult a registered tax agent before claiming depreciation on mining hardware.
Browse our full range of ASIC miners available for Australian delivery, or get in touch if you have questions about hardware specifications ahead of a purchase decision.
