We apply one of two possible exchange rates depending on whether the goods have already been paid for or not.
At the time of importation, if the importer has not already transferred payment to the overseas supplier for the goods then we use the customs exchange rate, which is the average of the four major banks at the date of valuation (usually exportation date) of the goods from the origin.
If the goods have already been paid for and you provide the payment remittance (e.g. T/T, Paypal Receipt, Credit Card Statement etc.) then we use the exchange rate that you paid for the goods on hence the Duty/GST is calculated based on the actual AUD amount you paid.
