Coverage of the proposed CGT changes has focused on long-term holders losing the 50% discount. For active crypto traders, the picture is very different. The discount is largely irrelevant to traders. The 30% floor and the indexation method both interact with high-frequency activity in ways that are not being discussed.

This article is for active traders running frequent spot positions on centralised exchanges. The DeFi-specific case is different and worth its own treatment.

The trader vs investor distinction matters more than the proposal

Before working through the proposal, the most important tax question for any active crypto trader in Australia is whether they are operating as an investor (CGT) or as a trader carrying on a business (ordinary income). This distinction predates the proposal and is unchanged by it.

The ATO applies a set of factors. Repetition and regularity of activity. Volume of trades. Holding periods. Capital invested. Whether the activity is operated in a businesslike manner with records, plans, and systems. No single factor is decisive. The cumulative picture determines the classification.

If a trader is classified as carrying on a business, gains are ordinary income and the proposed CGT changes do not apply to those gains. They are already taxed at the trader's marginal rate. The proposal is irrelevant to that activity.

If a trader is classified as an investor making frequent CGT disposals, the proposal applies in full.

Most active retail crypto traders sit closer to the investor end of the spectrum than they realise. The ATO has been clear that frequent trading does not automatically equal business activity. Volume alone does not flip the classification.

Why the 50% discount removal barely affects active traders

The 50% discount applies to assets held for more than 12 months. By definition, active traders rarely hold positions that long. Most disposals are made within weeks or months of acquisition.

For these traders, the loss of the 50% discount is theoretical. They were not accessing it on most of their activity anyway. The headline framing of "the discount is gone" affects them less than it affects long-term holders.

Where it does matter: any positions held over 12 months as part of a broader portfolio strategy. Traders who run an active book on most of their capital but hold core positions long-term lose the discount on the long-held portion. The active portion is unaffected.

Why the 30% floor matters more than the discount

For traders on lower marginal rates, the 30% floor is the dominant proposed change. Every net gain is taxed at the greater of marginal rate or 30%.

A trader on the 32% marginal rate is unaffected. Their marginal rate already exceeds 30%.

A trader on the 19% marginal rate sees their effective rate jump to 30% on every net gain. Across high-frequency activity, this compounds. A year of active trading that nets $10,000 in gains is currently taxed at 19% (around $1,900). Under the proposal, the same activity is taxed at 30% (around $3,000). The proportional increase is the same as for long-term holders on low marginal rates, but it applies to every event rather than the occasional disposal.

Why indexation barely helps

The proposed indexation method indexes the cost base by CPI growth between acquisition and disposal. For positions held for weeks or days, the CPI growth is negligible. A position held for four weeks during 0.5% quarterly CPI growth indexes the cost base by roughly 0.15%.

This means active traders effectively pay tax on the nominal gain, with no meaningful inflation adjustment. The relief that long-term holders receive from indexation does not apply to them.

Combined, the picture for an active trader on a sub-30% marginal rate looks like this. Gains are taxed at 30% (floor). No discount applies (not held 12 months). No meaningful indexation (short holds). The effective tax rate on every disposal is 30%.

Where traders are actually exposed

Two structural problems for the active trader segment.

Record keeping at volume

Active traders generate hundreds or thousands of CGT events per year. Each event requires acquisition date, AUD value at acquisition, AUD value at disposal, and (under the proposed rules) the CPI factor between those dates. Manual reconciliation is not viable at this volume. Software that handles current CGT rules must be rebuilt to handle indexed calculations.

Traders relying on incomplete exchange exports, screenshots, or spreadsheet reconstructions face a real problem under either tax framework. The proposed rules make the problem larger because the indexation methodology requires precise data the discount methodology did not.

Loss harvesting still works but matters more

Net capital gain is what gets taxed under both current and proposed rules. Active traders running well-tracked portfolios already use realised losses to offset gains. The proposal does not change this.

What it does change: the value of accurate loss tracking. Under current rules with the discount, a $10,000 gain becomes $5,000 taxable. A $3,000 realised loss reduces the taxable amount to $2,000. Under proposed rules with no discount, the same $10,000 gain is fully (or nearly fully) taxable. The same $3,000 loss reduces the taxable amount from around $9,800 (after small indexation) to $6,800. The dollar value of every realised loss increases.

What traders should actually do

Three considerations.

• Resolve the trader vs investor question first. If the activity meets the business test, the CGT changes do not apply. This is the highest-leverage tax question for any active trader and the proposal does not change it.
• Audit transaction records. Active trading generates volume that becomes unmanageable retrospectively. Records that are clean now are easier to work with under either framework.
• Model the floor impact specifically. For traders on lower marginal rates, the floor is the dominant change. For traders on higher marginal rates, the proposal is largely neutral.

The bottom line

Active crypto traders are affected by the proposed CGT changes in narrower ways than the headline coverage suggests. The discount removal is largely irrelevant because traders rarely access it. Indexation provides minimal relief because holding periods are too short. The 30% floor is the actual change, and it affects only the subset of traders on lower marginal rates.

Whether the trader is classified as carrying on a business remains the most important tax question. The proposal does not affect this distinction. For traders sitting on the boundary, the proposal does not change the case for either side.

For the current ATO position on trader vs investor classification, the Summ Australia crypto tax guide covers the relevant factors.

What to actually do before 31 October 2026

Lodgment day for individuals self-preparing their FY26 return is 31 October 2026. If you use a registered tax agent, you may have a later concessional deadline, but only if you're already on their books.

Before then, three priorities.

First, reconcile every account. Pull transaction history from every CEX, DEX, wallet, and chain you've touched in FY26. Crypto-to-crypto trades are CGT events. Staking rewards and most airdrops are ordinary income at the AUD value on receipt. DeFi positions can be both, depending on the mechanics. None of this is optional, and the ATO has the data to check the disposal side.

Second, if you've under-reported in earlier years, amend before they ask. Voluntary amendments through myGov consistently result in better outcomes than waiting for a prompt letter. The general rule: the earlier you correct, the smaller the penalty exposure.

Third, run the numbers with software built for the ATO's specific rules, including personal-use asset exemptions, the 12-month CGT discount, and the income versus investment distinction. Manual spreadsheets across multiple wallets and chains is where reporting errors are born.

Summ handles ATO-formatted reports natively, including the myTax workflow, full crypto-to-crypto reconciliation, NFT and DeFi support, and amendment-ready historical returns going back to 2014–15. The full Australian crypto tax guide walks through everything the ATO expects this year, including CARF-relevant changes ahead.

Import your transactions and generate a free report preview.