If you are an Australian crypto investor, the tax framework you have relied on for more than two decades is about to change in a meaningful way. Australia has passed the Treasury Laws Amendment (Tax Reform No. 1) Act 2026, the most significant overhaul to the country’s capital gains tax system in over 25 years. The change eliminates the 50% capital gains tax discount that currently benefits long-term holders and replaces it with a more complex system. The deadline is 1 July 2027, and what you do between now and then could affect how much tax you ultimately owe.
Australia’s 50% CGT Discount for Crypto Ends on 1 July 2027
Under current Australian tax law, if you hold a crypto asset for at least 12 months before selling, you generally qualify for a 50% capital gains tax discount. That means only half of your capital gain is included in your taxable income. This discount has been the backbone of Australia’s CGT framework for over two decades and has been widely used by individual investors holding shares, property, and crypto alike.
For example, if you have a gross capital gain of $20,000 on a crypto asset you have held for more than 12 months, the 50% discount reduces your taxable gain to $10,000. You pay income tax on $10,000, not $20,000. That reduction can translate into a significant real-dollar difference depending on your marginal tax rate. After 1 July 2027, that calculation no longer applies.
The New Australia CGT Rules Replace Simplicity With Two Separate Mechanisms
The incoming system replaces the 50% discount with two things: cost-base indexation and a new minimum 30% tax rate on capital gains. Cost-base indexation means your original purchase price, which is what you originally paid for the asset, gets adjusted upward to account for inflation before your gain is calculated. In theory, this protects investors from paying tax on gains that are purely the result of inflation rather than real appreciation. That said, indexation requires tracking and applying an inflation adjustment to each acquisition, which is a materially different recordkeeping task compared to applying a single 50% reduction.
The minimum 30% tax rate on capital gains is the second piece. Rather than gains flowing through at your marginal income tax rate after a discount, the new regime sets a floor of 30% on gains that fall under the new rules. For some investors, particularly those in lower income brackets who benefited from the discount being applied before their marginal rate, this represents a less favorable outcome. For higher-income earners whose marginal rate already exceeded the effective rate under the old discount, the comparison is more nuanced. Either way, the new system requires more calculation at tax time and more precise records throughout the holding period.
Gains Accrued Before 1 July 2027 Are Generally Protected Under Transition Rules
One of the most important details in the new legislation is how it treats gains that built up under the old rules. Under the transition provisions, gains that accrued before 1 July 2027 are generally protected, meaning the old discount framework can still apply to that portion of a gain. Gains that accrue from 1 July 2027 onward fall under the new regime. For crypto investors who have held assets across a long period, this means gains may need to be split across two periods, each taxed under different rules.
This split treatment is where recordkeeping becomes critical. To claim the protected treatment on pre-2027 gains, you need to be able to substantiate the value of your holdings at that date. For assets held on centralized exchanges where pricing data is readily available, this is manageable. For assets held in self-custody or less liquid positions, valuations may require more documentation and support. Poor records at this stage could directly affect how much of your gain qualifies for the more favorable pre-2027 treatment.
Two Steps Crypto Investors Can Take Before the 1 July 2027 Deadline
The first priority is getting your records in order now, well before the deadline. Under the new rules, you will need to clearly separate gains that accrued before and after 1 July 2027. That means knowing your acquisition dates, your cost basis (what you originally paid for each asset), and the fair market value of your holdings as of the transition date. The gap between now and 1 July 2027 gives you time to organize transaction histories, identify any gaps in your records, and establish defensible valuations for assets that may not have readily available market pricing.
The second step is to model your unrealized gains under both the current and incoming rules. Some investors may find that disposing of certain long-held positions before 1 July 2027 results in a better after-tax outcome under the existing 50% discount than holding through to the new regime. Others may find that the inflation indexation under the new rules produces a comparable or better result depending on the asset’s holding period and the inflation adjustment applicable. Reviewing your position with a qualified tax adviser who understands both the transition rules and your broader income picture is the most reliable way to assess whether any action before the deadline makes sense for your specific situation.
Disclaimer: This post is informational only and is not intended as tax advice. For tax advice, please consult a qualified tax professional.
