What an Australian Tax Invoice Must Show and When You Must Issue One
A GST-registered seller must issue a tax invoice on request for taxable sales above A$82.50 including GST. This guide lists the fields the ATO expects and the A$1,000 buyer rule.
Invoicing
Quote vs Estimate vs Invoice: Fields and Validity Periods
An estimate is a rough, non-binding figure, a quote is a fixed price with an expiry date, and an invoice asks for payment. Here is what each one must contain and how long a quote should stand.
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