Understanding Capital Gains Tax (CGT) on Shares and Crypto

Ever bought shares or dipped into crypto, only to wonder how much of your hard-earned gains the ATO will claim? You're not alone—many Aussies are navigating the tricky world of Capital Gains Tax (CGT) on these investments, especially with crypto's wild rides and shares' steady climbs. In 2026, understanding CGT rules can save you thousands and keep you ATO-compliant without the stress.

This guide breaks it down simply: from basics to calculations, discounts, and reporting. We'll cover shares and crypto with Aussie-specific examples, so you can make smart moves for the 2025-26 financial year (1 July 2025 to 30 June 2026).

What is Capital Gains Tax (CGT) in Australia?

CGT kicks in when you dispose of an asset—like selling shares or crypto—and make a profit. The ATO treats both shares and cryptocurrency as CGT assets, meaning any gain is added to your taxable income and taxed at your marginal rate (0-45% for 2025-26).

A CGT event includes selling for AUD, trading one crypto for another (e.g., Bitcoin for Ethereum), using crypto to buy goods, or even gifting. Simply holding doesn't trigger tax—it's the disposal that counts.

Key Differences: Shares vs Crypto

• Shares: Traded on ASX, franked dividends common, clear records via brokers like CommSec.
• Crypto: Viewed as property by ATO, not currency. Trading BTC for ETH is a taxable disposal, even without AUD.

Both qualify for the same CGT rules, but crypto's DeFi (lending, staking) can blur lines into income tax.

How CGT Works on Shares

For shares, calculate your capital gain as: Sale price - Cost base (purchase price + costs like brokerage). Report net gains on your tax return via myGov.

The 50% CGT Discount

Hold shares over 12 months? You get a 50% discount on the gain for individuals (not companies). Example: Buy 1,000 Telstra shares at $3.50 ($3,500 total), sell after 18 months at $4.50 ($4,500). Gain: $1,000. Discounted gain: $500, taxed at your marginal rate.

Offsetting Losses

Harvest losses from dud shares to offset gains. Sell a loser before 30 June, but watch ATO anti-avoidance rules—no wash sales (repurchasing identical shares soon after).

Practical tip: Use your broker's statements for cost base—saves headaches at tax time.

CGT on Crypto: ATO's 2026 Rules

The ATO classifies crypto as property under the Income Tax Assessment Act 1997. Taxable events mirror shares: sell, trade, spend, or gift. No tax on unrealised gains—just HODLing is safe.

Short-Term vs Long-Term Gains

Hold Period	Tax Treatment	Example (Gain $10,000, Marginal Rate 32.5%)
Less than 12 months	Full gain added to income	Tax: $3,250
Over 12 months	50% discount	Taxable: $5,000 → Tax: $1,625 (saves $1,625)

Rates based on 2025-26 brackets: 0% up to $18,200; 19% $18,201-$45,000; up to 45% over $190,001.

Personal Use Exemption

Buy coffee with crypto under $10,000? It might qualify as a personal use asset—CGT-free if not an investment. But loading gift cards counts as disposal.

Investor vs Trader

• Investor: CGT on disposals, 50% discount eligible.
• Trader: Frequent activity? Income tax on every trade, no discount.

Income Tax Overlaps: Staking, Airdrops, Mining

Not all crypto is pure CGT. Staking rewards, airdrops, and mining are ordinary income at market value when received, then CGT on later disposal.

Example: Stake ETH, earn 5 ETH worth $20,000. Report $20,000 income now. Sell later? CGT on gain from $20,000 cost base.

DeFi and NFTs

DeFi (liquidity pools) often triggers CGT on swaps + income on yields. NFTs follow CGT rules like crypto.

Accounting Methods for CGT

ATO allows FIFO (first in, first out), LIFO, HIFO, or ACB (average cost)—pick one consistently. Crypto tools automate this.

Tip: Track every transaction: date, amount, AUD value (use RBA rates or exchange data). ATO data-matches with exchanges.

Reporting and Paying CGT

Lodge via myTax by 31 October (or later with agent). Report under 'Capital Gains' for disposals, 'Other Income' for yields. Pay via PAYG instalments if big gains.

2026 Actionable Steps:

1. Gather records from exchanges/brokers.
2. Calculate gains/losses (use ATO CGT calculator).
3. Apply discounts/offsets.
4. Lodge through myGov—pre-fill includes some data.

Penalties for non-reporting: fines up to 75% of tax + interest.

Strategies to Minimise Your CGT Bill

• Hold 12+ months for 50% discount.
• Tax-loss harvest: Sell losers to offset winners before 30 June.
• Time sales to lower-income years (e.g., retiree brackets).
• Use super for shares—CGT concessions inside SMSF.
• Crypto software like Koinly or Kryptos for ATO-ready reports.

"The ATO tracks exchange data, so all transactions must be reported accurately." ATO Guidance

Next Steps to Stay CGT-Savvy

Grab your transaction history today, run numbers with free ATO tools, and consider crypto tax software for complex portfolios. Chat with a tax agent registered with TPB—they're gold for personalised advice. Remember, this isn't advice—rules change, so verify with pros or ato.gov.au. Smart planning now means more gains in your pocket next EOFY.

Disclaimer: Tax laws evolve. Consult a qualified accountant or the ATO for your situation. Lifetimes Australia provides general info only.