For studios whose prices already include GST or VAT: record the tax name, rate and registration number, and your monthly statement states the tax part of your sales.
Find "Tax on your prices". Only the owner sees it.
Choose the tax name, enter the rate, and add your registration number (your ABN in Australia, your VAT number in the UK and Europe). The example under the fields shows how a price splits at that rate.
From then on your monthly statement has an "Includes GST" (or VAT) line under the totals, on screen and in the CSV and PDF downloads.