Capital Gains Tax Calculator (2026)

Calculate capital gains tax (CGT) on Australian investment property. Estimate your taxable capital gain, CGT discount eligibility, tax payable, and net profit after tax.

FormulaCost Base = Purchase Price + Purchase Costs + Capital Improvements; Capital Gain = Sale Price − Selling Costs − Cost Base; Taxable Gain = Capital Gain × (1 − Discount); CGT = Taxable Gain × Marginal Tax Rate
Step 1

Input Values

Capital Gain$175,000

Purchase Details

Original purchase price of the property

Affects CGT discount eligibility

Sale Details

Expected or actual sale price

Agent commission, legal fees, marketing

Cost Base Additions

Stamp duty, legal fees, inspections at purchase

Renovations, extensions, structural improvements

Property & Ownership

Type of property being sold

Affects 50% CGT discount eligibility

Tax

Your highest Australian tax bracket

Step 2

Results

Capital Gain (Gross)

$175,000.00

CGT Discount Applied

$87,500.00

Taxable Capital Gain

$87,500.00

Estimated CGT Payable

$28,437.50

Net Profit After Tax

$146,562.50

Effective Tax Rate on Gain

16.3%

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Visualisation

Capital Gains Breakdown

Visual comparison of purchase price, cost base, sale price, CGT and net profit

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Frequently Asked Questions