A · Asset details
1. Asset type
2. Purchase price
$
3. Stamp duty + legal
$
4. Acquisition date
dd / mm / yyyy5. Hold for
hold period12 years
151015202530
6. Expected annual growth
per annum, compounding%
7. Inflation / CPI assumption
see note 4%
8. Your other taxable income *3
salary, rent, etc.$
9. Selling costs (agent + legal)
$
*3 — The gain is stacked on top of your other income; the marginal rate is derived from where the stacked income lands in the brackets. See notes overleaf.
B · Calculation summary
The damage:
$91,678
(in today’s $: $68,168)
Chalmers, Albanese & Gallagher — Tax Consultants. Calculator only. Not financial advice. Not affiliated with any government agency or accounting firm.
Scenario A
Pre-Budget rules
50% CGT discount
Scenario B
Post-Budget rules
Indexed cost base · 30% floor
Sale price$1,914,363
Sale price$1,914,363
Cost base$895,000
Cost base$1,203,675
Taxable gain$498,681
Taxable gain$688,687
Tax owed$239,814
Tax owed$331,492
After-tax proceeds (nominal)$1,652,549
After-tax proceeds (nominal)$1,560,871
After-tax proceeds (today's $)$1,228,763
After-tax proceeds (today's $)$1,160,595
Fig. 1
After-tax proceeds: pre vs post Budget rules
Pre-Budget (50% discount)Post-Budget (indexed + 30% floor)
Both lines are after-tax proceeds in today’s dollars (deflated by CPI). Solid = old 50%-discount rules; dashed = post-Budget rules (indexed cost base, 30% floor). The shaded gap is the damage. Bends in either line are tax-bracket transitions.