Guides · Invoice types · Updated August 16, 2026
What Is a Proforma Invoice? (And When to Use One)
A proforma invoice looks like an invoice, is labeled like an invoice — and is deliberately not one. It is a preview of the bill: "here is what the invoice will say, once we proceed." Businesses use it to confirm details, unlock prepayments and clear customs before the real document exists. Here is how it works and how it differs from the documents around it.
The definition, in plain terms
A proforma invoice is a preliminary bill of sale, sent before work is done or goods are shipped. It shows what the final invoice will contain — items, quantities, prices, taxes, totals — but it requests nothing and records nothing. It is not entered into accounts receivable, it cannot be paid against directly, and it creates no tax obligation. Think of it as the official-looking twin of a confirmed quote.
When businesses actually use one
- To trigger a prepayment. Many companies cannot pay "against a quote," but their process accepts a proforma as the basis for an advance or deposit.
- International shipping and customs. Customs authorities use proforma invoices to assess duties on goods before the commercial invoice exists.
- Final confirmation before committing. The client sees exactly what will be billed — quantities, rates, tax — and approves it. Scope surprises die here instead of at payment time.
- Internal approvals on the client side. A proforma gives their finance team a concrete document to budget and approve against.
Proforma vs estimate vs invoice
| Estimate / quote | Proforma invoice | Invoice | |
|---|---|---|---|
| Purpose | Propose a price | Preview the final bill | Request payment |
| Binding? | No — numbers may change | No, but numbers are final-intent | Yes — it is the payment request |
| Goes into your books? | No | No | Yes — accounts receivable |
| Typical timing | Before agreement | After agreement, before delivery | After (or during) delivery |
The full estimate-to-invoice journey is covered in invoice vs estimate .
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How to make a proforma invoice
Structurally it is your normal invoice with three changes: the title says "Proforma invoice" instead of "Invoice", it carries no invoice number from your real sequence (or a separate PF-prefixed one), and it states plainly that it is not a request for payment — one line like "This proforma invoice is for informational purposes and is not a demand for payment" does the job. In our generator you can simply rename the title field to "Proforma invoice" — every label on the document is editable — then issue the real invoice with a proper invoice number when the work ships.
Frequently asked questions
Can a client pay against a proforma invoice?
They can transfer money — but the payment still needs a real invoice to settle against, issued at or after the transfer. That is exactly how proforma-based prepayments work: proforma first, money second, final invoice third.
Does a proforma invoice affect taxes?
No — it creates no receivable and no tax point by itself. The real invoice does. (Specific VAT/customs treatment varies by country; check the rules that apply to your trade.)
Should proforma invoices be numbered?
Keep them out of your main invoice sequence — otherwise your numbering develops gaps for documents that were never real invoices. A separate PF-001 style series is the clean pattern.
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