Bitcoin tax in Australia: the complete guide

Bitcoin is the most common entry point into crypto, and for Australians the tax treatment is well established. This guide covers how BTC is taxed by the ATO, the capital and income events, the 50% discount, losses, and newer areas like Ordinals and Lightning.

How is Bitcoin taxed?

The ATO treats Bitcoin as a CGT asset (property), not currency. Every time you dispose of BTC (sell, swap, spend, gift) you trigger a CGT event: a gain if proceeds exceed your cost base, a loss if they fall short. Separately, BTC received through work, mining or staking is ordinary income at its AUD market value on the day you receive it.

The 50% CGT discount (not short-term versus long-term)

Forget the US rate tables. In Australia a net capital gain is added to your assessable income and taxed at your marginal rate. The timing lever is the 50% CGT discount: individuals who hold a CGT asset for more than 12 months before disposal generally have the gain reduced by half. Held 12 months or less, the full gain is assessable. Timing a sale past the 12-month mark can roughly halve the tax on the gain.

Bitcoin CGT events

• Selling BTC for AUD: gain or loss = proceeds minus cost base, less fees.
• Swapping BTC for another crypto: a disposal of BTC and an acquisition of the new asset, both at AUD market value.
• Spending BTC: using it to buy goods or services is a disposal.
• BTC to stablecoin: treated like any other swap.
• Wrapping (BTC to WBTC): may be a disposal depending on the facts; keep records.

Non-taxable

Moving your own BTC between your wallets is not a disposal. Buying BTC with AUD is not taxable in itself; it sets your cost base.

Personal use asset exemption

A narrow exemption can apply where you acquire crypto and use it to buy personal items, and the cost is under AUD 10,000. It rarely applies to crypto held as an investment, so don't rely on it for ordinary BTC holdings.

Bitcoin income events

• Mining: if a hobby, the BTC may be on capital account with cost base at market value; if a business, it's ordinary income (and trading-stock and deduction rules apply). The hobby-versus-business line matters.
• Staking and rewards: ordinary income at AUD value on receipt.
• Airdrops: established tokens are income on receipt; initial allocation airdrops aren't.
• Hard forks: a new asset received as an investor generally has a nil cost base, with CGT on later disposal.
• Salary or payment in BTC: ordinary income at AUD value (with possible salary-sacrifice and PAYG considerations for employers).

New considerations

Ordinals and BRC-20 tokens follow normal crypto and NFT rules: income if received for free, CGT on disposal. Lightning, sidechains, wrapped BTC and BTC DeFi: earning yield is income at receipt; using BTC as loan collateral isn't a disposal, but a liquidation is.

Using Bitcoin losses

Capital losses on BTC offset capital gains (current year or carried forward indefinitely) but cannot be deducted against salary, unlike the US.

The wash-sale rule

Australia has no 30-day wash-sale rule like the US, but it does have something arguably broader: the ATO's TR 2008/1 can disallow a loss where you sell and reacquire substantially the same asset with the dominant purpose of obtaining a tax benefit. So you can't safely sell BTC purely to harvest a loss and immediately rebuy it. Intent and facts govern.

Lost or stolen BTC

Where you can substantiate losing a crypto asset or access to it, the ATO may allow a capital loss; documentation is critical. Get advice for exchange collapses.

How Summ helps

Summ (formerly Crypto Tax Calculator) imports your BTC activity across wallets and exchanges, classifies income versus capital events, applies the 50% discount and your chosen cost-base method, and produces an ATO-ready report for myTax or your accountant.

This article is general information, not tax advice. Mining and business classifications are fact-specific; consult a registered tax agent.