7 Common Crypto Tax Mistakes Australians Make

1. Forgetting crypto-to-crypto trades

Swapping BTC for ETH is a CGT event, even if you never touch AUD. Many investors only report cash-outs and get caught by ATO data matching.

2. Ignoring airdrops and staking rewards

Airdrops and staking rewards are usually ordinary income at receipt. If you don't record them, your cost base and income will both be wrong.

3. Guessing the cost base

Your cost base includes the purchase price plus eligible fees. Use FIFO or the specific-identification method where allowed, and be consistent.

4. Missing the 12-month discount

If you hold an asset for more than 12 months as an individual, you may get a 50% CGT discount. Good software tracks holding periods automatically.

5. Forgetting transfer fees

Transfer and network fees can be added to your cost base in some cases. Keep records rather than ignoring them.

6. Not declaring foreign exchange gains

If you trade on USD or USDT pairs, the AUD/USD movement can create separate forex considerations for larger balances.

7. Lodge-and-hope instead of review

If your history is complex, have a crypto-specialist accountant or tax agent review it before lodging. The cost is far less than ATO penalties and interest.

Fix it before the ATO contacts you

Use Koinly to reconcile all transactions, or speak to a crypto tax accountant if you have years to catch up.

Frequently Asked Questions

Is crypto-to-crypto a taxable event in Australia?

Yes. Swapping Bitcoin for Ethereum, or any crypto-to-crypto trade, is a disposal for CGT purposes and must be reported even if you never converted back to Australian dollars.

Do I pay tax if I have not sold to AUD?

You do not pay tax on unrealised gains while you hold. However, selling, swapping, gifting or using crypto to buy goods triggers a CGT event regardless of whether the proceeds are in AUD.

What happens if I forgot to report crypto?

You may be charged interest and penalties. The ATO can amend returns for up to several years. If you discover an error, consider lodging an amendment or voluntary disclosure as soon as possible.

Are airdrops always taxable?

Most airdrops are ordinary income when received if they were part of a promotion or held as part of an existing project. Subsequent disposals are then CGT events. The facts matter, so keep evidence of how you received the tokens.

Can the ATO track my DeFi transactions?

On-chain activity is publicly visible and increasingly linkable to identities via exchange deposits and withdrawals. The ATO also receives exchange data. Relying on anonymity is risky and not a defence for incorrect returns.

General information only, current as a guide to ATO rules — not personal tax advice. Crypto tax depends on your circumstances. Verify with the ATO or a registered tax agent before you lodge.