What to Include on an Invoice

Every invoice should include enough information for the client to identify the charge, pay it, and reference it later. Leaving fields out delays payment and can cause tax issues — particularly if you're GST registered in Australia.

Include these fields on every invoice:

The word "Invoice" or "Tax Invoice"
Your business name, ABN, address, and contact details
A unique sequential invoice number
The date the invoice was issued
The client's name and billing address
Description of each item or service, with quantity and unit price
Subtotal, any GST or tax, and the grand total
Payment due date and payment methods (bank, BPAY, PayID)
Optional: PO number, project reference, or a thank-you note

For Australian tax invoices of $1,000 or more, also include the buyer's identity or ABN. Always send invoices as PDFs to prevent edits. InvoiceSonic's templates include every required field by default — you only need to fill in the variable information once.

What to Include on an Invoice

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