Australia's CGT Reform 2027: What the End of the 50% Discount Means for Crypto Investors

On 12 May 2026, the Federal Government announced the biggest change to Australia's capital gains tax system in 26 years. From 1 July 2027 — subject to legislation passing Parliament — the 50% CGT discount that has shaped a generation of long-term investment strategy will be replaced by cost base indexation and a 30% minimum tax on capital gains.

For Australian crypto investors, this is significant. Crypto is a high-growth asset class, and the 50% discount has historically delivered far more tax relief than indexation will. If you're holding long-term positions with meaningful gains, the rules of the game change in 14 months.

This is what's proposed, what's still uncertain, and what it actually means for crypto holders. It is not advice — final operation depends on legislation Parliament hasn't passed yet, and any decisions need to go through your registered tax agent.

What was announced

The headline change: from 1 July 2027, the existing 50% CGT discount for individuals, trusts, and partnerships will be replaced with cost base indexation and a 30% minimum tax on net capital gains. The change applies to all CGT assets held for more than 12 months, including pre-1985 assets that have been exempt for decades.

This is largely a return to the regime that existed between 1985 and 1999, before the Howard government introduced the 50% discount. Under indexation, the cost base of an asset is increased in line with inflation, and CGT is calculated on the "real" gain — the bit above inflation, not the nominal increase.

Two things are unchanged:

• The main residence CGT exemption is untouched
• Superannuation funds keep their existing one-third CGT discount for assets held over 12 months

Income support recipients (Age Pension, JobSeeker) are exempt from the 30% minimum tax. Companies are unaffected — they never got the 50% discount in the first place.

The three regimes you need to understand

The transitional rules create three distinct scenarios depending on when you bought and when you sell.

Scenario 1: Bought and sold before 1 July 2027 — old regime, unchanged

Everything you sell before 1 July 2027 continues to get the full 50% CGT discount on lots held more than 12 months. No change. This is the window you currently sit in.

Scenario 2: Bought from 1 July 2027 onwards — new regime, full force

Anything you buy after 1 July 2027 and sell later falls fully under the new regime: inflation indexation on the cost base, then 30% minimum tax floor on the indexed gain. No 50% discount available.

Scenario 3: Bought before 1 July 2027, sold after — transitional regime

This is where most existing crypto holders sit. The gain is split:

• Pre-1 July 2027 portion: the difference between your original cost base and the asset's market value on 1 July 2027. The 50% discount applies, taxed at your marginal rate.
• Post-1 July 2027 portion: the difference between the asset's value on 1 July 2027 (indexed for inflation) and your sale price. Indexation applies, then the 30% minimum tax floor.

The Government has indicated two methods for splitting the gain:

1. Time apportionment — gains allocated based on the fraction of the holding period that fell before vs. after 1 July 2027
2. Market valuation at 1 July 2027 — using the actual market price of the asset at the cutoff date

For volatile assets like crypto, the choice between time apportionment and market valuation can make a meaningful difference. If your BTC ran up substantially before mid-2027 then went sideways after, market valuation locks in more of the gain under the favourable old regime. If it ran up after, time apportionment may be more favourable. The Treasury hasn't yet published draft legislation specifying when each method is available, so this is one of the open questions.

Why this matters more for crypto than for property

Inflation indexation works well for asset classes that grow roughly in line with inflation. It works badly for asset classes that grow faster than inflation. Crypto is the second kind.

Consider a simple example. You buy 1 BTC on 1 July 2025 for $80,000. On 1 July 2030, you sell it for $200,000. Holding period is 5 years, well past the 12-month threshold.

Under current rules (50% discount): $120,000 gain × 50% = $60,000 taxable, taxed at your marginal rate. At 37%, that's $22,200 of CGT. At 47% (top bracket), it's $28,200.

Under proposed new rules (full new regime, ignoring transitional): assume 3% annual inflation over 5 years, so cost base indexes from $80,000 to roughly $92,700. Real gain = $200,000 − $92,700 = $107,300. Apply 30% minimum: $32,190 of CGT.

The new regime is roughly 45% more expensive in this scenario for someone at the 37% bracket, and 14% more expensive at the top bracket. Indexation gives back a sliver of relief; the 30% minimum tax mostly takes it back from anyone whose marginal rate would otherwise be lower.

For crypto held shorter periods, or in higher-inflation environments, the numbers shift — but the direction is consistent: indexation gives less relief than the 50% discount did, and the 30% floor caps how cheaply lower-income years can be used.

What's actually less clear

A lot, frankly. The Budget announcement was directional. The detail will come from Treasury exposure draft legislation and ATO guidance over the next several months.

Some open questions specifically relevant to crypto:

• How will the 1 July 2027 market valuation be determined for crypto? Exchange spot price at midnight? Time-weighted average? Multi-exchange composite? For thinly-traded altcoins, this matters.
• How will indexation apply to crypto held across multiple wallets or DeFi positions where the cost basis trail isn't a clean single-event acquisition? FIFO under indexation could get gnarly.
• What happens to capital losses? Under the pre-1999 indexation system, losses were unindexed. If the same approach applies, you can get the "indexed cost base exceeds sale price but original cost base doesn't" trap, where the disposal generates neither a gain nor a loss.
• How does the 30% minimum tax interact with foreign tax credits for Australians who paid tax on crypto disposals in another jurisdiction?
• Will there be special transitional concessions for assets that complete a 12-month holding period straddling 1 July 2027?

None of these are answered yet. Anyone claiming certainty about how the rules will operate is guessing. The Treasury will release exposure draft legislation in the coming months, and final law won't exist until Parliament passes it.

What's still possible between now and 1 July 2027

Three full financial years of normal CGT treatment:

• FY 2025-26 (current, ending 30 June 2026) — 50% discount, unchanged
• FY 2026-27 (ending 30 June 2027) — 50% discount, unchanged
• First three days of FY 2027-28 — 50% discount, unchanged

That's a long planning window — longer than the headlines suggest. The dramatic framing of "act before EOFY 2025-26" misses the point: you have 14 months from today, not six weeks.

Strategically, the questions become:

• Are there positions you were going to sell anyway in the next 14 months? Doing it pre-1 July 2027 keeps you in the old regime.
• Are there positions you'd realistically hold for years more? The transitional regime preserves the pre-July-2027 gain at the 50% discount even if you sell in 2029 or 2032 — the discount on accumulated gains isn't lost just because you hold past the cutoff.
• For positions you'd hold across the boundary, is it worth getting a clean market valuation as at 1 July 2027 to support the transitional calculation? Possibly yes, even if you don't sell anywhere near that date.

The "do you sell?" decisions belong with your tax agent, not with us, and definitely not with internet posts. Your circumstances, marginal rate, broader portfolio, and risk tolerance all factor in. But the data decisions — what's your cost base, what's your unrealised gain, when did each lot enter your portfolio, what's the market value at any given snapshot — those are reconciliation questions, and reconciliation questions are answerable.

What we're seeing already

Anecdotally, two patterns are showing up in the consultancy work in the week since the announcement:

• Investors with messy data are waking up to the reconciliation problem. Three years' worth of unprocessed exchange exports plus DeFi activity plus old wallets — if the cost base isn't clean by mid-2027, the transitional calculation gets harder.
• Conversations with tax agents are starting earlier. The good agents are already modelling their clients' portfolios under the proposed rules to identify positions that warrant timing decisions.

If your data is in good shape and you have a competent tax agent, you're well positioned to wait for the legislation, see the detail, and make decisions calmly. If your Koinly hasn't been touched in years or your reconciliation has open issues, the 14-month runway is shorter than it looks once you account for the work needed to get the data ready for those decisions.

What this changes about EOFY 2025-26 planning

It doesn't, really. EOFY 2025-26 is still EOFY: standard 12-month CGT discount considerations, standard loss harvesting (within Part IVA limits), standard timing decisions. See our EOFY crypto tax planning guide for the regular planning playbook — it's all still relevant, because the new rules don't kick in for another 12+ months after EOFY 2026.

The only thing that changes is: when you're thinking about your portfolio in the medium term, the picture beyond mid-2027 looks different. That's a reason to get your data clean now, not a reason to make panic disposals in June.

Important caveats

A few things to keep in mind reading this:

• The reform is proposed, not legislated. It requires legislation to pass Parliament. The Government holds a majority but cross-bench negotiation, draft legislation iteration, and consultation will likely produce changes from what was announced on 12 May. The final form of the rules will probably differ in detail from the Budget night announcement.
• The ATO will publish guidance. A lot of the open questions above will get answers, but the timing is uncertain — likely staged across late 2026 and early 2027.
• None of this is tax advice. We prepare crypto tax data. We do not advise on tax strategy, structure, residency, or whether to dispose of a particular asset. Those decisions belong with your registered tax agent, who can look at your full picture and apply current law.

What we can do for you

HandyTax does crypto tax reconciliation. We take your exchange CSVs, wallet addresses, DeFi position history, and bot trading data; reconcile everything in Koinly; apply FIFO cost basis; and deliver a clean CGT report your tax agent can work from.

For Australian clients with substantial crypto positions, getting the data clean in the next 12 months is the most useful thing you can do regardless of what shape the final legislation takes. A clean reconciliation lets your tax agent model transitional scenarios, run "what if I sold this lot before 1 July 2027" analysis, and have an informed conversation about your specific picture.

Get a quote for your Australia crypto tax reconciliation →

Or read more about Australia crypto tax for 2026, including how we handle DeFi, NFTs, bot trading, and multi-exchange portfolios.

The legislative timeline is uncertain. The reconciliation work isn't. Getting your data clean now means you're ready to make decisions when the final rules are clear — not scrambling in June 2027.