What it means
The document exists to remove uncertainty before anyone commits. It lists the goods, quantities, unit prices, delivery terms, currency, validity period and expected shipping date, so both sides can agree the deal in full detail before an order is confirmed.
It is not a tax document. Because no sale has occurred, a pro-forma invoice does not go into the sales ledger, does not count towards revenue and normally cannot be used to reclaim sales tax, which is why it should always be marked clearly as pro forma.
International trade is where it earns its keep. Customs authorities, freight forwarders and banks often need a formal statement of value before goods move, and a letter of credit is typically opened against a pro-forma invoice rather than a commercial one.
It is also the standard tool for advance payment. When a supplier will not ship to a new customer on credit, the pro-forma invoice gives the buyer's finance team something to raise a payment against, and it doubles as internal justification for releasing the funds.
Once the goods ship, the commercial invoice replaces it. The two documents should match line for line, because a discrepancy between the pro-forma and the final invoice is a common cause of customs delays and payment disputes.
In practice
Real-world examples.
Example
A machinery supplier sells a $95,000 press to a buyer overseas. It issues a pro-forma invoice so the buyer's bank can open a letter of credit and the freight forwarder can prepare customs documents before the machine leaves the factory.
Example
A design agency asks a new overseas client for 50% upfront on a $36,000 project. It sends a pro-forma invoice for $18,000, the client's accounts team raises a payment against it, and the agency issues a formal invoice for the full amount only once the work is delivered.
Example
A wholesaler ships samples of no commercial value to a prospective retail customer. Customs still needs a declared value, so the wholesaler encloses a pro-forma invoice stating $600 for customs purposes only, with no payment expected from the recipient.
Formula
Calculation
Pro-forma invoice total = (quantity x unit price) + freight + insurance + duties and other charges.
A packaging manufacturer prepares a pro-forma invoice for an overseas buyer covering 500 cartons of moulded trays at $240 per carton. The goods value is 500 x $240 = $120,000. Sea freight to the destination port is $6,500 and marine insurance is $1,500, so the delivered total quoted on the document is $120,000 + $6,500 + $1,500 = $128,000. The terms state 30% payable on order and the balance before shipment, so the deposit is 0.30 x $128,000 = $38,400 and the balance is $128,000 - $38,400 = $89,600. None of this touches the seller's accounts until the goods are dispatched and a commercial invoice for $128,000 is raised.Case study
Seen in the real world.
Aldervane Components is an illustrative, fictional supplier of industrial fasteners that won its first export order from a buyer on the other side of the world. The buyer needed to open a letter of credit, its bank needed a document to open that credit against, and the customs broker needed a declared value before the container could be booked.
Aldervane issued a pro-forma invoice covering 40 pallets at $1,850 each, a goods value of 40 x $1,850 = $74,000, plus $4,200 of freight and $800 of insurance, for a quoted total of $79,000. Terms were 25% on order, so the buyer paid 0.25 x $79,000 = $19,750 and owed a balance of $79,000 - $19,750 = $59,250 before dispatch. Nothing was recorded in Aldervane's sales ledger at this stage, which caused a brief argument with a bookkeeper who wanted to post the deposit straight to revenue.
When the container shipped, Aldervane raised a commercial invoice for exactly $79,000 with identical line detail, and only then did revenue enter the accounts. The company is fictional, but the two habits it learned are real: mark the document clearly as pro forma, and make the commercial invoice match it line for line.
Watch out
Common mistakes.
- Recording a pro-forma invoice as a sale. No sale has taken place, so it creates no revenue, no receivable and no tax point.
- Letting the commercial invoice differ from the pro-forma one. Mismatched values and descriptions are a common cause of customs holds and payment delays.
- Omitting a validity date. Prices, freight rates and exchange rates move, and an open-ended pro-forma invoice can commit the seller to terms it no longer wants.
Questions
People also ask.
Is a pro-forma invoice legally binding?
Generally no, because it is treated as an offer or firm quotation rather than a contract, although acceptance and payment against it can create one.
Can a buyer reclaim sales tax using a pro-forma invoice?
No, tax authorities require a valid commercial invoice, which is exactly why pro-forma documents should be marked clearly.
What is the difference between a quotation and a pro-forma invoice?
A quotation states a price, while a pro-forma invoice sets out the whole transaction in invoice format, including payment terms, shipping details and totals ready for banking and customs use.
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