Crypto Tax-Loss Selling in Australia: How to Use Losses to Cut Your Tax Bill

📉 What is tax-loss selling (and why crypto investors use it)🔗

Tax-loss selling is exactly what it sounds like. You sell an asset sitting at a loss to crystallise that loss for tax purposes. The resulting capital loss then offsets capital gains you've made elsewhere, reducing your overall CGT bill for the year. In Australia it's also called crypto tax-loss harvesting, same strategy, different name.

It's particularly useful for crypto investors because the market is volatile. You might be sitting on a solid gain from an asset you bought years ago while a more recent position is deep in the red. Instead of just watching that loss sit there unused, you can sell it before 30 June and put it to work against the gain.

Crypto markets run 24/7, so you can execute right up to the last minute of the financial year, and volatility means there are almost always some positions sitting at a loss, even in a bull market. The ATO treats crypto as a CGT asset, so the same rules that apply to shares and property apply here too.

✅ How it works in Australia: the basics🔗

The mechanics are straightforward.

Step 1, realise the loss. You have to actually sell, swap or otherwise dispose of the crypto. A paper loss, where the price has dropped but you're still holding, doesn't count.

Step 2, offset same-year gains. Capital losses first reduce capital gains made in the same income year. Crypto losses can offset gains from any CGT asset, shares, investment property, other crypto, it's all pooled together.

Step 3, carry forward any excess. If your total capital losses exceed your total capital gains for the year, you end up with a net capital loss that carries forward indefinitely to future income years.

🎯 The essential: One hard limit: capital losses can't offset ordinary income. They can't reduce your salary, wages, rental income or business income, only capital gains.

⚠️ The wash sale warning: Australia's version🔗

This is the section most people skip. Don't.

Australia doesn't have a fixed 30-day wash sale rule like the United States. There's no bright-line "wait this many days before rebuying" written into the law. That's genuinely good news.

The less good news: the ATO has its own version, and it's arguably harder to plan around because it's based on purpose and intent rather than a simple calendar count.

Part IVA of the Income Tax Assessment Act 1936 is Australia's general anti-avoidance provision. It lets the ATO cancel a tax benefit from any arrangement where the dominant purpose was to obtain that benefit. The ATO has explicitly applied this to wash sales through Tax Ruling TR 2008/1 and Taxpayer Alert TA 2008/7, and its own media release, titled "Wash sales: the ATO is cleaning up dirty laundry", specifically names crypto alongside shares as an asset class it watches closely at EOFY.

The pattern the ATO is looking for: sell crypto at a loss, quickly rebuy the same or a substantially similar asset, end up with essentially no real change in your economic exposure, and pocket a capital loss for tax purposes. If the dominant purpose of that sequence was to manufacture a tax loss rather than reflect a genuine investment decision, the ATO can cancel the loss entirely, with penalties of up to 50% of the tax avoided on top.

🔄 Carrying forward losses: how it works🔗

End up with more capital losses than capital gains in a given year, and you don't lose them, they carry forward.

• No time limit. Net capital losses carry forward indefinitely.
• Earliest losses first. The ATO requires you to apply losses in the order they were made.
• Capital gains only. Carried-forward losses still can't offset ordinary income in future years.
• Personal use asset exception. If your crypto qualifies as a personal use asset, the loss is disregarded and can't be carried forward at all, more on this below.

In practice, a bad year in crypto can set you up well for future years. Crystallise $20,000 in losses this year with only $5,000 in gains, and you carry $15,000 forward, waiting to absorb a future gain when you eventually sell a long-held position.

⏱️ The 12-month CGT discount interaction🔗

This is where strategy gets interesting. Australian resident individuals and trusts get a 50% CGT discount on capital gains from assets held at least 12 months before disposal. Companies don't get this discount.

The ATO's calculation order matters here. You add up all capital gains, subtract capital losses (current year first, then carried-forward), and only then apply the 50% discount to any remaining eligible gains. That means losses reduce your gross gain before the discount is applied, which makes them less efficient against a discountable (12+ month) gain than against a non-discountable (short-term) one.

The smart play: harvest losses from positions held less than 12 months and use them against any short-term gains you have, which are fully taxable. Where possible, hold your long-term winners past the 12-month mark before selling, so the full 50% discount applies. If you have both short-term and long-term gains, apply losses to the non-discountable gains first for the lowest overall CGT bill.

🚫 What you can't do: the personal use asset exception🔗

Here's a trap that catches people out. If your crypto qualifies as a personal use asset, any capital loss from selling it is completely disregarded. You can't use it to offset gains, and you can't carry it forward, it simply disappears.

The ATO defines a personal use asset as one used or kept mainly for personal use or enjoyment. For crypto, that typically means crypto acquired and used to buy goods or services for personal consumption, not held as an investment. Most crypto held by investors isn't a personal use asset, if you bought it on an exchange hoping it would go up in value, it's an investment asset and the normal CGT rules apply. But crypto bought specifically to pay for something online, that dropped in value before you used it, may be treated as a disregarded loss.

The classification depends heavily on facts and intent, and the line isn't always obvious for crypto used partly for purchases and partly held as an investment. A registered tax agent can help you get this right.

📅 Timing: when to execute tax-loss selling🔗

The Australian financial year runs 1 July to 30 June. That's your deadline.

• The disposal must happen before midnight on 30 June to count in that financial year. Crypto markets are 24/7, but don't cut it fine, exchange processing times and record-keeping matter.
• Don't wait until the last week. ATO scrutiny of EOFY crypto transactions increases sharply in June, and sell-and-rebuy patterns in the final days attract more attention.
• Review your positions in April or May, giving yourself time to identify losses, weigh up whether harvesting makes sense after transaction costs, and execute without rushing.
• Keep records of every transaction, date, AUD amount, cost base and proceeds. Good records are what separates a clean return from an ATO audit.

🧮 A practical example🔗

You bought 1 ETH in January 2024 for $4,000 and sold it in May 2026 for $14,000, a $10,000 capital gain. Held over 12 months, so the 50% CGT discount applies. You also bought a smaller altcoin position in March 2025 for $8,000 and sold it in June 2026 for $2,000, a $6,000 capital loss, held under 12 months.

Without harvesting the loss, the taxable gain would have been $5,000 (the $10,000 ETH gain simply halved). Realising the loss cuts that to $2,000, a $3,000 reduction in taxable income. At a 37% marginal rate, that's roughly $1,110 in tax saved from one well-timed sale.

❓ Frequently asked questions🔗