The single most important fact

In Australia, crypto is generally treated as a CGT asset (like shares or property), not as foreign currency. That means tax usually isn't triggered by holding — it's triggered by disposing: selling to AUD, swapping one coin for another, spending crypto, or gifting it.

Yes, crypto-to-crypto trades are taxable events. Swapping BTC for ETH is a disposal of BTC at its market value at that moment, even though no dollars touched your bank account. This is the rule that surprises most beginners.

Capital gains, losses, and the 12-month discount

  • Your gain (or loss) is the difference between the disposal value and your cost base (what you paid, including fees).
  • Hold an asset for more than 12 months before disposal and individuals can generally apply a 50% CGT discount on the gain — the single biggest legal tax lever for long-term holders.
  • Capital losses can offset capital gains (and carry forward), but they can't offset your salary income.

Investor vs. trader

Most people are investors under CGT rules. If you trade at high frequency in a business-like way, the ATO may treat you as a trader, where profits are ordinary income and the CGT discount doesn't apply. The line is fact-dependent — if you're anywhere near it, get professional advice.

What about staking, airdrops, and DeFi?

Rewards from staking and most airdrops are generally treated as ordinary income at market value when received, and then form the cost base for a later CGT event when you dispose of them. DeFi transactions (wrapping, providing liquidity) can each be disposals — the ATO has published guidance, and it is stricter than many users assume.

Record-keeping: do it from day one

The ATO receives data from Australian exchanges, so "they won't know" is not a strategy. For every transaction, keep: date, asset, amount, AUD value at the time, fees, and what the transaction was. In practice, connect your exchanges and wallets to a crypto tax software early — reconstructing three years of DeFi history at tax time is genuinely painful.

The honest disclaimer

Tax law changes and individual circumstances differ. Use this as a map of the terrain, verify current rules on the ATO website, and for anything non-trivial, talk to an accountant who actually understands crypto.