"I'll move to Portugal and sell my crypto there" is a popular plan. It usually does not work. Under Australian tax law, cryptocurrency held on capital account is a CGT asset, and ceasing Australian residency triggers CGT event I1 — the same deemed disposal that applies to shares. The market-value gain on the day residency ends is taxed in the departure-year return unless you elect under section 104-165 to defer. Add the ATO's crypto data-matching program (which routinely flags taxpayers who think exchanges are anonymous) and the rule of thumb is simple: get advice before you leave, not after.
How Australian tax treats crypto: capital asset or revenue asset
The starting question for any crypto holder is whether the holding is on capital account or revenue account. The answer drives the entire tax treatment, and is independent of whether or not you leave the country.
Capital account (most individual investors). Crypto is a CGT asset. Each acquisition forms a separate parcel with its own cost base. Each disposal (sale to fiat, swap to another token, payment for goods/services, gift) is a CGT event. Net capital gains are included in assessable income; losses are quarantined to offset future capital gains.
Revenue account (commercial trading business or carrying on a business of dealing in crypto). Crypto is trading stock under section 70-10 ITAA 1997 or a revenue asset. Gains are ordinary income (no CGT discount); losses are deductible against ordinary income. The bar for being on revenue account is high — frequency, scale, business-like organisation, profit-making purpose. Most individual holders are on capital account.
The ATO's longstanding position is set out in Tax Determination TD 2014/26 (treating Bitcoin as a CGT asset for the purposes of Part 3-1 of ITAA 1997) and in the ATO's crypto asset investments guidance, which has been updated several times since.
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CGT event I1 applies to crypto exactly like it applies to shares
CGT event I1 in section 104-160 of ITAA 1997 happens when an individual stops being an Australian tax resident. For every CGT asset they hold that is not "taxable Australian property", a deemed disposal occurs at market value on the date residency ends, and a deemed reacquisition at the same value.
Taxable Australian property is defined in section 855-15: Australian real property, indirect interests in Australian real property (broadly, 10%+ in a land-rich entity), business assets of an Australian permanent establishment, and options or rights over those things. Crypto is not any of these. Holding Bitcoin, Ethereum, Solana or any other digital asset is therefore exactly the kind of asset CGT event I1 was drafted to capture.
A practical example. Consider an Australian resident with the following crypto holdings on the day they cease residency (30 June 2026):
- 2 BTC bought between 2019 and 2021 for an average of AUD $35,000 per coin (total cost base AUD $70,000), market value on 30 June 2026 of AUD $140,000. - 50 ETH bought in 2020 for an average of AUD $400 per coin (total cost base AUD $20,000), market value AUD $250,000. - An assortment of altcoins with cost base AUD $30,000, market value AUD $20,000.
On the day residency ends, CGT event I1 happens for all three holdings. Aggregate unrealised gain: $140,000 − $70,000 + $250,000 − $20,000 + $20,000 − $30,000 = $290,000. That gain is included in the 2025-26 Australian resident return — even though no actual sale has occurred and the individual may have insufficient cash to pay the resulting tax.
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The s104-165 election: defer the gain by keeping crypto in the Australian CGT net
Section 104-165 of ITAA 1997 gives the individual a choice. They can either pay CGT on the deemed-disposal gain in the departure year, or elect to disregard the I1 gain by treating the asset as "taxable Australian property" until they actually dispose of it (or become an Australian resident again).
For crypto in particular, the election usually makes sense:
- Cash-flow at departure is preserved. - No requirement to liquidate the position into AUD to fund the tax bill. - The asset stays inside the Australian CGT net, so a future sale is taxed in Australia — but with credit for any foreign tax paid under Australia's tax treaties or the foreign income tax offset rules in Division 770 ITAA 1997.
The trade-off is the 50% CGT discount apportionment under Subdivision 115-B. Any portion of the eventual gain accrued while a foreign resident is taxed at full marginal rates with no discount. For long-term holders this can be material. Model both paths before lodging the final resident return.
For the legal architecture in more detail, see our companion article on CGT event I1 and the deemed disposal of non-Australian-property assets.
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The ATO's crypto data-matching program — why "anonymous" exchanges are not
The ATO has operated a formal data-matching program for crypto transactions since 2019. The most recent iteration covers customer identification and transaction records from Australian Designated Service Providers (DSPs) — crypto exchanges, custodians and brokers operating in Australia under AUSTRAC obligations. Major exchanges in this category include but are not limited to CoinSpot, Independent Reserve, Swyftx, Binance Australia, and BTC Markets.
The data collected includes:
- Customer identifying information (name, address, date of birth, account references). - Linked bank account details. - Transaction history (buys, sells, swaps, withdrawals, fiat on-ramps and off-ramps).
The ATO uses this data to:
- Pre-fill (or flag the absence of) capital gains items in tax returns. - Identify taxpayers who appear to have disposed of crypto without reporting the resulting gain. - Issue bulk warning and amendment letters — the ATO has publicly stated that hundreds of thousands of such letters have been issued in recent years.
Information held by a domestic Australian exchange about an Australian resident customer is also subject to international information-sharing arrangements under the Common Reporting Standard (CRS) and the OECD's Crypto-Asset Reporting Framework (CARF). CARF was finalised by the OECD in 2022, is being implemented globally over 2026–2027, and will require crypto-asset service providers to share customer data with home-country tax authorities. The "if I move it offshore the ATO will never know" argument has been weakening every year, and is essentially gone by the time CARF is operational.
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Self-custody and decentralised wallets — same tax outcome
Moving crypto to a hardware wallet, MetaMask, Ledger, Trezor or any other self-custody arrangement does not change the Australian tax position. Self-custody is simply a different storage method for the same CGT asset. The CGT event happens when ownership changes — the move from an exchange to your own wallet (or between your own wallets) is generally not a CGT event in itself, but it does not exempt the asset from CGT on future disposal or from CGT event I1 on departure.
The compliance challenge is record-keeping. Without exchange statements, you carry the full burden of substantiating cost bases. The ATO is entitled to apply a zero cost base if you cannot prove what you paid. Keep:
- Acquisition records (date, AUD equivalent, fees) for every purchase. - Wallet-to-wallet transfer logs (date, sending wallet, receiving wallet, amount, purpose). - Block explorer URLs or transaction hashes for material transfers. - Disposal records (date, AUD equivalent at disposal, fees) for every sale or swap.
DeFi activity — lending, staking, liquidity provision, yield farming — generates further CGT and ordinary-income events that need to be tracked. The ATO has published specific guidance on these transaction types.
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Common mistakes and how to avoid them
Treating crypto-to-crypto swaps as non-events. Every swap is a CGT event. Selling BTC to buy ETH triggers a capital gain or loss on the BTC even though no fiat is received. This catches taxpayers out at scale.
Forgetting NFTs, airdrops, hard forks and staking rewards. NFTs are CGT assets. Airdrops and hard forks usually create ordinary income at market value on receipt. Staking rewards are ordinary income on receipt and start a new CGT cost base. Each has its own rule under ATO guidance.
Assuming "long-term hodling" is not a CGT event. Holding is fine. But any disposal — including using crypto to pay for goods or services, gifting it to someone other than a spouse via the marriage breakdown rollover, or transferring it to a business — is a CGT event at market value.
Reverse-engineering cost bases years later. Reconstructing acquisition records from memory or partial exchange exports rarely holds up. Use a dedicated crypto tax tool (Koinly, CoinTracking, CryptoTaxCalculator and similar) with full exchange and wallet integrations, ideally from the date of first acquisition.
Ignoring the residency dimension. Many crypto holders plan to "go nomad" without realising that the way they pack their bags can crystallise a tax event. CGT event I1 attaches to the change in tax residency, not the date of physical departure. Get a residency view from a registered tax agent before the move, not after.
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Practical sequence if you are leaving Australia with significant crypto
1. Consolidate records. Pull complete exchange CSVs, all wallet histories and a full transaction list for every CGT asset you have ever held. A crypto tax tool with all integrations is non-negotiable.
2. Get a residency view in writing from a TPB-registered tax agent. This determines the exact day CGT event I1 happens. The day matters because market values are taken at that day.
3. Model two scenarios — pay-now vs s104-165 election. Calculate the cash-flow and lifetime tax cost of each. For most crypto holders the election is the better answer, but not always.
4. Document the election clearly in your final resident return. The election is generally implicit in not including the I1 gain, but explicit documentation removes ambiguity.
5. Keep records for the new jurisdiction. Many countries (Portugal, UAE, Thailand) have specific crypto rules that interact with Australia's via the relevant tax treaty. Foreign income tax offsets in Division 770 ITAA 1997 require evidence of foreign tax paid.
For our independent listings of tax agents experienced with crypto and expat structuring, see accountants in Sydney, Melbourne and Brisbane.
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FAQ
Q: I'm leaving Australia for a country with zero crypto tax — does that make my Australian CGT go away? A: No. Australian CGT on the gain accrued up to the date you cease residency is owed to Australia. The destination country's tax rules apply only from your arrival there. If you elect to defer under s104-165 and then sell, Australia still has a taxing right (because you elected to keep the asset in the Australian CGT net), with credit for any foreign tax actually paid. Q: What if I just don't lodge a final Australian return? A: A bad idea. Lodgement is a legal obligation while you are an Australian resident. Failing to lodge or to disclose the I1 gain exposes you to penalties of up to 75% of the shortfall for reckless behaviour, plus interest. The ATO has indefinite amendment power where there is fraud or evasion. Crypto data-matching makes detection materially likely. Q: Does the ATO actually pursue smaller crypto cases? A: Yes. Bulk amendment notices have been issued against taxpayers with gains in the tens of thousands of dollars, not just whales. Reputational and administrative cost of a remediation is high. Voluntary disclosure under the ATO's pre-amendment program reduces penalties significantly compared to ATO-initiated correction. Q: I bought my crypto pre-CGT (before 20 September 1985). Is it exempt? A: This is essentially impossible — Bitcoin was created in 2009. Any crypto you hold is necessarily post-CGT and within the CGT regime.---
Sources
- ATO — Crypto asset investments: ato.gov.au — crypto asset investments - ATO — Transactions acquiring and disposing of crypto assets: ato.gov.au — crypto transactions - ATO — Crypto data-matching program: ato.gov.au — crypto data-matching protocol - ATO — Tax residency: ato.gov.au — your tax residency - TD 2014/26 — Bitcoin as a CGT asset - ITAA 1997 s 104-160 (CGT event I1), s 104-165 (election), s 855-15 (taxable Australian property) - ITAA 1997 Subdivision 115-B — discount apportionment for foreign and temporary residents - ITAA 1997 Division 770 — foreign income tax offsets - OECD — Crypto-Asset Reporting Framework (CARF): oecd.org — CARF - AUSTRAC — Digital currency exchange providers: austrac.gov.au — DCE providers - Tax Practitioners Board public register: tpb.gov.au/public-register
Information in this article is general and current as at 19 May 2026. Crypto tax outcomes depend on individual fact patterns; get advice from a TPB-registered tax agent before you leave Australia or before lodging the year of departure.
Browse our independent directory of accountants and tax agents at /best/.