Crypto mining: business income vs hobby
How the ATO classifies your mining operation changes everything: what you pay tax on, when you pay it, and what deductions you can claim. Here's how to work out which category you fall into.
| Mining as business | Mining as hobby | |
|---|---|---|
| Tax on receipt | Ordinary income at market value | No tax on receipt |
| Tax on disposal | Trading stock or CGT (cost base = income value) | CGT with zero cost base |
| Equipment deductions | Yes (depreciation) | No deductions |
| Running costs | Deductible (electricity, internet, cooling) | Not deductible |
| GST | Required if turnover exceeds $75,000 | Not applicable |
The ATO does not have a single bright-line test. Instead, they consider a range of factors to determine whether your mining is carried on as a business:
A single gaming PC mining in spare time is almost certainly a hobby. A dedicated setup with multiple ASICs running 24/7 is likely a business.
If you mine as a business, each coin you receive is ordinary income at its AUD market value on the date of receipt. This is similar to earning a salary; your income is taxed at your marginal rate.
Business miner
You mine 0.1 BTC when BTC is $100,000:
Hobby miner
You mine 0.1 BTC when BTC is $100,000:
Business miners can claim depreciation on mining equipment. Common deductible assets include:
Small business miners (under $10M turnover) may be eligible for the instant asset write-off or simplified depreciation pool, allowing faster deductions.
If your mining business turnover exceeds $75,000 per year, you must register for GST. However, cryptocurrency transactions involve complex GST rules:
It depends on your circumstances. You cannot simply choose; the ATO classifies you based on the facts. But understanding the implications helps with planning:
How does the ATO determine if crypto mining is a business or hobby?
The ATO considers factors including the scale of operations, repetition and regularity, whether you have a profit motive, whether you keep business records, and the amount of capital invested in equipment. No single factor is decisive.
Can I claim mining equipment as a tax deduction?
Only if your mining is classified as a business. Business miners can claim depreciation on GPUs, ASICs, and other equipment, plus deductions for electricity, internet, and cooling. Hobby miners cannot claim any deductions.
Do I need to register for GST as a crypto miner?
If your mining is a business and your annual turnover exceeds $75,000, you must register for GST. However, sales of cryptocurrency are input-taxed financial supplies, so the GST treatment of mining is complex and may require professional advice.
How are hobby mining rewards taxed?
For hobby miners, mined coins are not taxed when received. Instead, they are treated as CGT assets with a zero cost base. You only pay tax when you sell or swap them, and the entire sale proceeds may be a capital gain.
Tax Accuracy & Sources
Compares the Australian tax treatment of crypto mining as a business versus a hobby. Classification depends on the facts of your operation; the ATO assesses scale, regularity, profit motive, and business-like conduct. Seek tailored advice for borderline cases or near-GST-threshold turnover.