Cryptocurrency taxation is one of the fastest-growing areas of enquiry at the ATO — and one of the most misunderstood by investors. The ATO receives data directly from Australian exchanges, so it often knows about your crypto activity before you lodge. If you've traded, staked, received airdrops or simply swapped one cryptocurrency for another during 2025–26, you likely have obligations to report. The good news is that the rules, while detailed, are quite logical once you understand them.
What triggers a CGT event
For most investors, crypto is treated as a capital gains tax (CGT) asset, much like shares. A CGT event happens when you dispose of crypto — for example when you:
- Sell crypto for Australian dollars
- Swap one crypto for another (for example, Bitcoin to Ethereum)
- Use crypto to buy goods or services
- Gift crypto to someone else
The surprise for many people is the second and third points. Swapping one coin for another is a disposal of the first coin, even though no dollars changed hands — and the gain is calculated in Australian dollars at the time of the swap. Simply holding crypto, on the other hand, does not trigger CGT; the taxing point is the moment you dispose of it.
When crypto is income, not a capital gain
Some crypto activity is taxed as ordinary income rather than as a capital gain. Receiving crypto as payment for work or services, and staking or mining rewards, is generally assessable as income at its market value when you receive it. A later disposal of those same coins is then a separate CGT event, with the cost base being the value you already declared as income. Mixing these two treatments up is one of the most common crypto tax mistakes.
The 50% CGT discount
If you hold a crypto asset for more than 12 months before disposing of it, you may be eligible for the 50% CGT discount — meaning only half the gain is included in your assessable income. This is one of the strongest arguments for a considered buy-and-hold approach where it suits your goals, rather than frequent trading. (Note that very active trading can, in some cases, be treated as a business rather than investing, which changes the tax treatment entirely — worth checking if you trade heavily.)
Losses can help — if you record them
Crypto is volatile, and capital losses are a normal part of investing. A capital loss can be used to offset capital gains in the same year, and unused losses can generally be carried forward to future years. But you can only claim a loss you can substantiate, which brings us to the most important habit of all.
Keep clean records from day one
The single biggest cause of crypto tax stress is poor records. For every transaction, you ideally want the date, the value in Australian dollars at the time, what the transaction was for, and the fees involved. Exchanges come and go and download histories disappear, so export and keep your data regularly rather than scrambling at tax time. A crypto tax calculator or portfolio tracker can do most of the heavy lifting if it is fed clean data.
The bottom line
Crypto is not a tax-free corner of the investing world, but it is entirely manageable with good records and an understanding of when a disposal happens. If you have a year or two of untracked activity, it is better to sort it out now than to wait for the ATO to ask.
If your crypto records are a tangle or you are unsure what you need to report, we can help you get them straight and lodged correctly. Book a chat at nebulaaccounting.au or call 0433 822 227.
This article is general information only and does not take account of your personal circumstances — it is not personal tax, financial or legal advice. Tax laws change and apply differently to different people. Nebula Accounting Pty Ltd is a registered tax agent (No. 26259377); please speak with us or check with the ATO before acting.