Learner,
CGT is not a REAL tax, it's simply the profit on the sale of a profitable asset being treated as part of your income for tax purposes.
Thus take your gross income, add the profit from the asset & that's your taxable income for the year (adjusted by a few factors such as the 50% discount & PPOR exemptions).
The tax you pay will be based on this amount.
Cheers,
Aceyducey