Free Crypto Tax Calculator Australia 2025–26 | Bitcoin & Crypto CGT

What the Calculator Covers

The MegaCalcOnline crypto tax calculator is built around current ATO rules for the 2025–26 financial year. It handles:

• All disposal types: AUD sale, crypto-to-crypto swap, and spending crypto on goods or services — because all three are taxable CGT events under ATO rules, not just cash-outs to dollars
• The 50% CGT discount: Automatically applies when you select "held more than 12 months," halving the taxable gain before calculating tax at your marginal rate
• Capital losses: Offset your gain by any capital losses carried forward from prior years
• Your marginal tax rate: Uses the 2025–26 income tax brackets to calculate the additional tax payable on the gain, based on your total other income
• Personal use asset exemption: Toggle this on if the crypto was genuinely acquired and used quickly for personal purchases — the calculator will show the gain as potentially exempt

How to Use the Calculator

1. Select your disposal type — sold for AUD, swapped for another crypto, or spent on goods/services
2. Enter your cost base — the AUD amount you originally paid for the crypto, not including exchange fees (add those in the fees field separately)
3. Enter your disposal proceeds — the AUD you received, or the AUD market value of the crypto or goods you received if it was a swap/spend
4. Enter any fees — exchange fees on the disposal reduce your proceeds and therefore your gain
5. Select your holding period — more than 12 months gives you the 50% CGT discount
6. Enter your other taxable income — your salary, rental income etc. for the year (not including the crypto gain itself) — this determines which marginal rate applies to the gain
7. Click Calculate — the result shows your gross gain, discounted taxable gain, CGT payable, and effective rate

What the Calculator Doesn't Cover

The calculator is designed for straightforward individual disposals. For complex situations, you'll need dedicated crypto tax software or a registered tax agent:

• Multiple transactions across an entire financial year (the calculator handles one disposal at a time)
• DeFi activity — staking, liquidity pools, yield farming, wrapped tokens
• NFT trades
• Mining income
• Complex cost base allocation across many purchases of the same asset (FIFO, LIFO, HIFO)
• The proposed 2027 CGT reform estimate (available on our main CGT calculator as an optional toggle)

What Counts as a Crypto Disposal in Australia?

A common misunderstanding is that only selling for Australian dollars triggers tax. The ATO defines disposal broadly — all of these are taxable CGT events:

About the 50% CGT Discount for Crypto

The 50% CGT discount is the single most powerful tool available to Australian crypto investors. If you hold a crypto asset for more than 12 continuous months before disposing of it, only half of the net capital gain is included in your assessable income. The other half is completely disregarded.

The discount applies to individuals and trusts. It does not apply to companies or to investors classified as carrying on a trading business. It also does not apply to the proposed post-2027 rules (if eventually passed by Parliament) — though those are not yet law.