An invoice is a document that a business sends to a customer to request payment for goods or services. It records what was supplied, the agreed price, and how to pay. Invoices are the basis of small business accounting and are essential for tax records, BAS lodgements, and proof of income.
A standard invoice contains:
In Australia, businesses registered for GST must issue "tax invoices" for sales over $82.50 (GST inclusive). The buyer needs the tax invoice to claim a GST input tax credit. Always send invoices as PDFs to lock in formatting. InvoiceSonic's free generator creates professional, ATO-compliant invoices in under two minutes.
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