This guide is general information only and does not constitute tax or financial advice. Tax obligations vary depending on individual circumstances. Always consult a registered tax professional or accountant for advice specific to your situation. For official ATO guidance, visit ato.gov.au.
If you're running a Bitcoin miner — whether it's a desktop unit at home or a small fleet of commercial ASICs — you have tax obligations under Australian law. The ATO has issued specific guidance on crypto mining, and it treats mining income differently depending on one critical question: are you a hobby miner or a business miner?
The answer to that question determines whether your mining rewards are taxed as income the moment you receive them, or only when you eventually sell them. It also determines whether you can claim deductions for electricity and hardware costs. Getting it wrong in either direction has real consequences.
This guide explains the ATO's current position on crypto mining tax in plain language — what applies to home miners, what applies to commercial operations, and what records you need to be keeping right now.
How the ATO Classifies Crypto Assets
The ATO does not treat cryptocurrency as money or foreign currency. It classifies crypto assets — Bitcoin, Litecoin, Kaspa, and all others — as property, specifically as Capital Gains Tax (CGT) assets under the Income Tax Assessment Act 1997.
This single classification underpins every tax obligation a miner has. When you acquire crypto through mining, you are acquiring a CGT asset. When you later sell, swap, spend, or gift it, you trigger a CGT event. The question of whether your initial acquisition of mined coins also constitutes assessable income — on top of the eventual CGT event — depends on whether the ATO classifies your mining activity as a hobby or a business.
The Most Important Question: Hobby Miner or Business Miner?
This distinction is the cornerstone of crypto mining tax in Australia, and the ATO does not draw the line based on equipment size alone. It looks at the overall picture of your activity across several factors:
- Commercial intent — Do you mine with a genuine intention to make a profit, rather than purely for personal interest?
- Business-like conduct — Do you keep records, operate systematically, and manage the activity like a business?
- Scale and regularity — How frequently do you mine, and at what scale?
- Investment in equipment — Have you made a material capital investment in ASICs, GPUs, or supporting infrastructure?
- Whether you have an ABN and operate as an entity — While not decisive on its own, operating through a registered business structure is a strong indicator.
No single factor is conclusive. The ATO looks at the totality of your circumstances. A home miner running a single low-power device for personal interest is unlikely to meet the business threshold. Someone running multiple commercial ASICs with the intention of selling mined coins for profit is more likely to be classified as a business — even without a formal company structure.
If you are genuinely unsure which category applies to you, seek advice from an accountant with crypto experience before you lodge your tax return.
Tax Rules for Hobby Miners
If your mining activity is classified as a hobby, the tax treatment is relatively straightforward:
No income tax on receipt of mined coins
When you receive mining rewards as a hobby miner, you do not declare them as income at that point. The ATO treats the mined coins as a capital acquisition — you have acquired a CGT asset, not earned assessable income.
CGT applies when you dispose of coins
When you later sell, swap, spend, or gift your mined coins, a CGT event is triggered. Your capital gain is calculated as the difference between the disposal proceeds (in AUD) and your cost base. For hobby miners, the cost base of mined coins is typically zero or the value of directly attributable mining expenses — not the market price at time of receipt.
If you hold the coins for more than 12 months before disposing of them, you are entitled to the 50% CGT discount — meaning only half the capital gain is included in your assessable income for that year.
No expense deductions
Hobby miners cannot claim deductions for electricity costs, hardware depreciation, or any other mining-related expenses. This is a significant limitation and is one reason some miners seek advice on whether their activity might qualify as a business instead.
No personal use asset exemption
The personal use asset CGT exemption (which can apply to assets acquired for $10,000 or less used for personal enjoyment) does not apply to mined cryptocurrency.
Tax Rules for Business Miners
If your mining activity constitutes carrying on a business, the tax treatment is more complex — but it also unlocks meaningful deductions.
Mining rewards are assessable income at receipt
As a business miner, the AUD market value of coins at the time you receive them is included in your assessable income for that financial year. This is taxed at your marginal income tax rate. There is no 50% CGT discount available on this income — it is ordinary income, not a capital gain.
A second tax event occurs on disposal
When you later sell or dispose of coins that were previously declared as income, a CGT event occurs again. However, your cost base for this CGT calculation is the AUD market value at the time you received the coins (the same value you declared as income), not zero. This prevents double-taxation on the same gain.
Deductions are available
Business miners can claim deductions for expenses directly related to mining operations, including:
- Electricity costs attributable to mining hardware
- Hardware depreciation (ASICs, GPUs, mining rigs, PSUs)
- Internet and networking costs attributable to mining
- Cooling and ventilation infrastructure
- Software, monitoring tools, and pool fees
- A portion of home office costs if mining from home, calculated on a reasonable apportionment basis
Detailed records are essential to substantiate all claimed deductions. The ATO requires you to be able to demonstrate the nexus between each expense and your mining business activity.
Mined coins may be treated as trading stock
For business miners, the ATO may treat mined coins as trading stock. This has implications for how you account for opening and closing stock values at the end of each financial year, and you should discuss the appropriate accounting method with your tax professional.
GST and Crypto Mining
The GST treatment of crypto mining involves a few distinct scenarios that are worth understanding clearly.
Purchasing crypto is GST-free
Sales and purchases of digital currency have been GST-free in Australia since 1 July 2017. You do not pay GST when buying cryptocurrency, and you do not charge GST when selling it.
Mining rewards themselves are generally not subject to GST
The ATO's position is that the mined reward itself is not a taxable supply for GST purposes.
Supplying mining services to a pool can trigger GST obligations
This is where it gets nuanced for business miners. If you are registered for GST and supply mining services to a mining pool operated by an Australian resident, that supply is a taxable supply and GST applies. If you supply mining services to a non-resident or overseas-operated mining pool, the supply is GST-free.
Most home and small-scale miners connecting to major international mining pools (Antpool, F2Pool, Foundry, etc.) will generally be supplying services to non-Australian operators, meaning the supply is GST-free.
Input tax credits on business purchases
If you are registered for GST and your mining activity constitutes an enterprise, you may be able to claim input tax credits (GST credits) on eligible business purchases — including hardware and electricity costs — to the extent those purchases relate to making taxable or GST-free supplies of mining services.
GST registration is required once your annual turnover from enterprise activities exceeds $75,000. For most home miners this threshold is unlikely to be reached, but it is worth monitoring if your operation grows.
Capital Gains Tax: The Key Rules Every Miner Needs to Know
Regardless of whether you are a hobby or business miner, CGT applies when you dispose of mined coins. Here are the rules that matter most:
Every disposal is a CGT event
Selling Bitcoin for AUD, swapping Bitcoin for another cryptocurrency, spending crypto on goods or services, and gifting crypto all constitute disposals and trigger CGT events. Many miners only think to report AUD sales — but every crypto-to-crypto transaction in between must also be reported.
The 12-month CGT discount
If you hold a crypto asset for more than 12 continuous months before disposing of it, you are entitled to a 50% CGT discount as an individual taxpayer. Only 50% of the net capital gain is included in your assessable income.
Note: the government has announced changes to CGT discount rules taking effect in July 2027, replacing the flat 50% discount with an inflation-based model. Assets acquired before that date will retain the current rules. This is worth factoring into your longer-term tax planning.
Capital losses can offset gains
Capital losses from crypto (or any other CGT asset) can be used to offset capital gains in the same year. Unused capital losses carry forward indefinitely and can offset future capital gains — but they cannot be used to offset ordinary income such as salary.
Cost base matters
The ATO accepts FIFO (First-In, First-Out) and HIFO (Highest-In, First-Out) as accounting methods for calculating gains across coin batches. The method you choose can materially affect your tax position. Discuss with your accountant which method is most appropriate for your situation and apply it consistently.
Record-Keeping: What the ATO Expects
The ATO requires detailed records of all crypto transactions to be kept for at least five years. For miners, this means:
- The date and time each mining reward was received
- The AUD market value of each reward at the time of receipt
- The wallet address and transaction ID for each reward
- Pool payout statements and transaction histories
- Records of all subsequent disposals — dates, amounts, AUD value at disposal
- Receipts and invoices for all hardware and electricity expenses (if claiming as a business)
- Records of any conversion between cryptocurrencies
The ATO has access to transaction data from Australian cryptocurrency exchanges through data-matching programs. The advice from most tax professionals is to assume all on-chain activity is visible to the ATO and record accordingly.
Several Australian-compliant crypto tax platforms (Koinly, CryptoTaxCalculator, CoinTracking) can import transactions directly from wallets and mining pools and generate ATO-ready reports. If you're running any volume of transactions, these tools are worth considering.
How This Affects Your Decision to Mine vs Buy
The tax treatment of mined coins differs meaningfully from the tax treatment of purchased coins — and for some miners, this is an underappreciated consideration.
When you buy Bitcoin directly, your cost base is what you paid in AUD. When you mine Bitcoin as a business, your cost base is the market value at receipt — which was also declared as income. The pathway to any eventual gain involves both an income tax event and a CGT event.
For a detailed comparison of the financial and strategic considerations on both sides, see our guide: Mining vs Buying Crypto: Which Is Better in 2026?
Mining Hardware: ASIC Miners Available from MinerHub
If you're setting up or expanding a mining operation in Australia, browse our full range of ASIC miners — from low-power home units to high-performance commercial hardware — in the ASIC Miners collection.
For anyone starting out at home and wanting to keep electricity costs and hardware investment modest while navigating the hobby/business question, our guide to home mining in 2026 is a useful companion read: Home Bitcoin Mining in Australia: Is It Worth It in 2026?
Questions about hardware or getting set up? Get in touch with our team — we're based in Australia and can help you find the right hardware for your situation.
This article is general information only. It is not tax advice and does not account for your individual circumstances. Tax laws may change. Always consult a qualified Australian tax professional before making decisions based on this content.
