When to Use a Proforma Invoice in Australia

Use this guide when you need pre-sale billing structure before the final invoice is issued.

Use a proforma invoice before the live invoice exists

A proforma invoice works when the customer needs a document that looks close to the final bill, but the actual tax invoice is not ready to issue yet. It is common for deposits, approvals, internal purchase processing, or pre-delivery confirmation.

How to use the generator for a proforma invoice

Enter your business details once in the Proforma Invoice Generator Australia and reuse them for every estimate. Line items, GST treatment, and a validity date all flow through the same profile you use for real invoices, so switching between the two document types does not mean re-entering your business information twice.

How it differs from a quote

A quote is usually broader sales paperwork. A proforma invoice is closer to the final pricing structure and often includes payment details, invoice-style numbering, and a validity window. Use the quote when you are still pricing the job. Use the proforma when the customer needs pre-sale billing detail.

What comes next

Once the work is approved or delivered, the next step is usually the live tax invoice. If scope still needs to be discussed, move back to a quote or service agreement summary instead of forcing the proforma to do every job.

What to include on a proforma invoice

Business name, ABN, and contact details
Customer name and delivery or project reference
Proforma number and issue date, clearly labelled "proforma invoice"
Line items with estimated pricing and GST treatment
Validity date, so the client knows how long the estimate holds
A short note that this is not a tax invoice and does not entitle the recipient to a GST credit

A proforma invoice is not a tax invoice

This is the distinction that causes the most confusion. A proforma invoice can look identical to a tax invoice — same layout, same line items, sometimes even the same GST figure — but it does not entitle the buyer to claim a GST credit, and it should not be recorded in your accounts as a sale. It exists purely to communicate expected charges before the transaction is finalised. Label it clearly as "proforma invoice" (not just "invoice") so neither side accidentally treats it as the real thing for accounting or GST purposes.

Common uses for a proforma invoice

Import and export transactions, where customs or the buyer's finance team needs a document showing expected value before goods ship
Deposits or advance payments where the final tax invoice will follow once the work is delivered
Internal purchase approval, where a buyer's finance team needs a document to approve spend before a purchase order is raised
Large equipment or custom orders where pricing needs sign-off before manufacturing or procurement begins

Across all of these cases, the common thread is the same: someone on the buyer's side needs a document that looks and reads like a real invoice — for a finance approval workflow, a customs declaration, or a bank — before the actual sale is ready to be finalised and billed.

Frequently asked questions

Can a proforma invoice be used to claim a GST credit?

No. A proforma invoice is not a tax invoice, so it cannot be used to claim a GST credit even if it shows a GST amount. The buyer needs an actual tax invoice once the sale is finalised before the credit can be claimed.

Does a proforma invoice need an invoice number?

It should have its own numbering sequence, clearly labelled "proforma invoice" so it is not mistaken for the final tax invoice. When the real invoice is issued later, reference the proforma number so both documents are easy to match against each other.

What happens if the final amount differs from the proforma?

That is expected and one of the reasons a proforma exists — it is an estimate, not a locked-in figure. If quantities, scope, or pricing change before delivery, the final tax invoice should reflect the actual amount, with a brief note if the difference from the proforma is significant enough that the client might query it.

Next steps

Move into the document that matches the stage of the deal instead of reusing the same file for pricing, approval, and payment.

Before approval

Use the proforma now

Proforma Invoice Generator Australia