⚠ Proposed Reforms — Not Yet Legislated
Based on Budget 2026–27 announcements (12 May 2026). Subject to consultation and Parliament.
CGT Calculator
See what you could pay.
Enter your details below. We'll show the difference between the current 50% discount rules and the proposed split calculation — pre-2027 gain would keep the 50% discount, post-2027 gain would get CPI indexation plus a 30% minimum tax. Numbers are based on Budget 2026–27 announcements and are subject to change.
Your Crypto Details
Original purchase price (cost base)
The split date — estimated market value
What you expect to sell for
Your Tax Situation
The CGT discount only applies if held 12+ months
Used to index your cost base after 1 July 2027
How long after the cut-off date will you hold?
Note — held under 12 months. The 50% CGT discount never applied to short-term holdings, even under the old rules. So old and new tax bills will look similar. The split calculation still applies, but neither period gets a discount.
Sale price below split date. Your crypto dropped after 1 July 2027. Under the new rules, CPI indexation actually helps here — the indexed base rises while sale price falls, so post-2027 real gain is zero. Pre-2027 gain still applies if value rose before the split.
Under Old Rules
—
Tax bill (50% discount on all gain)
Under New Rules
—
Tax bill (split calculation)
Extra tax you'll pay because of this budget—
BreakdownAmount
Total profit—
Pre-1 July 2027 gain (50% discount)—
Taxable from pre-2027 gain—
Post-1 July 2027 gain—
CPI-indexed cost base (post-2027)—
Real gain after indexation—
Taxable from post-2027 gain—
Total assessable gain—
Your marginal tax rate—
Estimate only — based on proposed reforms. Budget 2026–27 measures still need to pass Parliament. Actual rules may change before 1 July 2027. This calculator is for educational purposes only and does not account for capital losses, carried-forward losses, offsets, PAYG instalments, or individual circumstances. Always consult a registered tax agent before making any decisions.