Processing times for Capital Gains Tax Clearance Certificates
A clearance certificate provides certainty to purchasers regarding their withholding obligations. It confirms the withholding tax is not applicable to the transaction.
The purchaser must withhold 12.5% of the purchase price in transactions involving taxable Australian real property, or an indirect Australian real property interest that provides company title interests, with a market value of $750,000 or more, unless the vendor shows the purchaser a clearance certificate from us.
The ATO processes applications in order of date of receipt. To avoid possible delays in settlement, apply for a clearance certificate at least 28 days before you require it.
Source - ATO