Crypto Losses in Australia: Offsets, Carry-Forward and ATO Rules

An Australian investor cannot deduct a crypto capital loss from salary or ordinary business income. The loss first reduces capital gains, before any CGT discount, and an unused net capital loss can generally be carried forward without a time limit.

Reviewed 1 September 2026. This guide explains the Australian federal rules for individual crypto investors. A crypto trading business, company, trust, SMSF, non-resident or personal-use asset can have different treatment.

A price fall is not yet a capital loss

A capital loss normally requires a CGT event. Selling crypto for Australian dollars, swapping one token for another, gifting it or spending it can dispose of a CGT asset. The market value of the property received is relevant when there is no arm's-length cash price. Merely watching a token fall in value while continuing to own it does not crystallise a loss.

The ATO's CGT overview confirms that disposal events involving crypto assets can produce reportable capital gains and capital losses. Transfers between wallets under the same beneficial ownership are not sales, although fees paid in crypto may involve a separate disposal.

How an investor calculates a crypto capital loss

A capital loss generally arises when capital proceeds are less than the asset's reduced cost base. Acquisition cost and incidental costs can form part of the cost base or reduced cost base when the legislation permits. Costs already deducted elsewhere cannot be counted again.

Example: Ava bought a parcel for A$9,000 and incurred A$100 of eligible acquisition costs. She later sold it for A$5,700 and paid A$80 of eligible disposal costs. On these simplified facts, proceeds are A$5,700 and the reduced cost base is A$9,180, producing a A$3,480 capital loss. Exchange-reported “realised P&L” is not a substitute for this CGT calculation.

Every value must be in Australian dollars at the relevant transaction time. Keep the exchange rate or market-price source; a USD stablecoin amount is not already an AUD tax value.

Current-year and prior-year losses come before the discount

The order matters. Broadly, an individual:

1. works out capital gains and allowable capital losses from each CGT event;
2. applies current-year capital losses against current-year capital gains;
3. applies unapplied net capital losses carried forward from earlier years;
4. then applies any available CGT discount to the remaining discount capital gains; and
5. then applies any other relevant concession.

The ATO's capital gain or loss worksheet instructions make clear that losses are applied before the CGT discount. Applying a 50% discount first and subtracting losses afterwards understates taxable gain.

Taxpayers can generally choose which capital gains to reduce first. Applying losses to gains that cannot receive the discount often preserves more of the discount benefit, but the optimal order depends on the full portfolio and available concessions.

Unused net capital losses carry forward, not backward

If allowable capital losses exceed capital gains, the remainder is a net capital loss. It cannot reduce salary, interest, rent or other ordinary assessable income. It is recorded in the tax return and carried forward for use against future capital gains.

The ATO states in its guidance on applying capital losses that there is no time limit on the carry-forward. Individuals cannot carry a capital loss back to amend a prior-year gain. Once future gains exist, available losses must be considered under the ordering rules; they are not an optional deduction to save indefinitely.

Losses do not receive the CGT discount

The discount reduces eligible capital gains, not capital losses. An Australian-resident individual or trust may generally qualify for a 50% discount after holding the asset for at least 12 months. Complying superannuation entities generally use 33.33%; companies do not receive the CGT discount.

Suppose an individual has a A$20,000 discount-eligible gain and a A$6,000 capital loss. Apply the loss first, leaving A$14,000; a 50% discount then produces A$7,000 of net capital gain before other adjustments. Discounting A$20,000 to A$10,000 and then subtracting A$6,000 would be incorrect.

See the Australian crypto CGT calculation guide for acquisition dates, proceeds, cost base and the 12-month rule.

Do not invent a pooled average cost

Each crypto holding is a CGT asset, and acquisitions at different times can have different cost bases and discount eligibility. The transaction record should identify which units were disposed of and maintain a consistent, supportable parcel selection. Specific identification is strongest when wallet and exchange records trace the units.

FIFO may be used as a practical parcel convention where records and facts support it. Other parcel selections require equally reliable identification. A blanket weighted-average method should not be substituted for transaction-level CGT records merely because an exchange displays an average entry price. Average entry price can be useful trading information without being the legal cost base of every disposal.

The ATO requires records for each crypto asset and every transaction in its official crypto recordkeeping guidance.

Australian wash-sale risk is purpose-based

Australia does not use the US 30-day wash-sale formula. That does not make an artificial loss safe. A disposal and rapid reacquisition of the same or substantially the same economic exposure, carried out with a dominant purpose of obtaining a tax benefit, can attract Part IVA.

The Commissioner's legally binding Taxation Ruling TR 2008/1 explains that wash-sale analysis depends on all circumstances, including continued economic exposure and the purpose of the steps. A genuine sale at a loss is not automatically denied, but an engineered round trip needs review.

Lost keys, theft and failed platforms

Lost or stolen crypto may support a capital loss when the taxpayer can establish ownership and that access is genuinely lost. Evidence can include acquisition and loss dates, wallet address, units, cost, identity-linked exchange transactions, control of the wallet and efforts to recover the asset.

The ATO's official loss-or-theft guidance also notes that compensation or insurance can affect the result. An exchange withdrawal freeze or insolvency claim should not automatically be booked as a zero-proceeds disposal while recovery rights remain. Preserve creditor statements and insolvency correspondence.

Personal-use crypto losses are disregarded

Crypto acquired and used mainly to buy personal items may, on narrow facts, be a personal-use asset. A capital gain can be disregarded if the acquisition cost was less than A$10,000, but every capital loss from a personal-use asset is disregarded. It cannot be carried forward.

Most long-held or speculative crypto is an investment, even if proceeds are eventually spent on personal consumption. Intention, holding period, use and surrounding conduct matter. Do not label a losing investment “personal use” to seek an exemption while still claiming its loss.

Investor loss or crypto-trading business loss?

An investor generally holds crypto on capital account. A person carrying on a genuine crypto-trading business may hold assets as trading stock or on revenue account, making profits assessable as ordinary income and losses potentially deductible under business rules.

Frequency alone does not prove a business. Volume, repetition, business plan, systems, recordkeeping, capital, skill and commercial purpose are relevant. Companies and trusts also require entity-specific analysis. Non-commercial loss rules can restrict an individual's ability to use a business loss against other income. The Australia crypto tax guide explains the investor-business boundary.

Reporting and records checklist

• date, time, units, asset, wallet, counterparty and transaction hash;
• AUD market value and the price or FX source at each event;
• acquisition cost, fees, parcel selected and holding period;
• capital proceeds, reduced cost base and gain or loss;
• current-year losses, carried losses, ordering and CGT discount reconciliation;
• evidence for theft, loss, insolvency or compensation; and
• business-versus-investor rationale where activity is extensive.

The ATO generally requires crypto records for five years from the later relevant time described in its guidance. Keep loss records long enough to substantiate the carried amount when it is eventually used. The crypto tax records checklist provides a practical export and reconciliation workflow.

Australian crypto-loss FAQ

Disclaimer: This article is for general informational purposes only and does not constitute tax advice. For individual tax advice, consult a licensed tax professional.