Pro Forma Invoice
Last reviewed 2026-05-11 by Asad Ali, Founder & CEO
A preliminary, non-binding invoice sent before goods are delivered or services completed.
A pro forma invoice ("pro forma" is Latin for "as a matter of form") is a preliminary commercial document a seller sends to a buyer before goods ship or services are delivered. It looks like a real invoice and contains the same key information — seller and buyer details, line items, quantities, prices, total amount, applicable tax estimate, payment terms, and shipping terms — but is clearly marked "PRO FORMA INVOICE" or "Not a Tax Invoice." It is not a demand for payment, does not record a sale in the accounting books, and is not a substitute for a final commercial invoice. Common uses: (1) good-faith price quotes that customers can use to obtain internal purchase order approval or financing; (2) requests for advance payment or deposit before production begins; (3) customs declaration documents for international shipments, where the receiving country requires a declared value before goods arrive; (4) letter-of-credit (L/C) negotiations, where the buyer's bank requires a pro forma to issue the L/C in favor of the exporter; (5) import permit applications. Once goods ship or services are delivered, the seller issues a final commercial invoice (the real, posted, binding document) that supersedes the pro forma. Pro forma invoices are generally not used to compute sales tax remittance or claim VAT input credits.
Formula
Pro Forma Invoice Total = Sum of Line Items + Estimated Tax + Estimated Shipping + Other Charges. Final invoice may differ if quantities, exchange rates, or freight actuals vary.Example
A US manufacturer receives an inquiry from a buyer in Germany for 500 units of custom industrial pumps. The manufacturer prepares a pro forma invoice dated March 15: 500 units × $50 = $25,000, plus estimated shipping $1,800, plus packing/crating $400 = $27,200 total, with payment terms "50% deposit on order confirmation, 50% balance against bill of lading," ship within 60 days FOB Houston. The buyer uses the pro forma to (a) obtain internal purchase order approval, (b) open a $27,200 commercial letter of credit through Deutsche Bank in favor of the manufacturer, and (c) provide the document to German customs as the basis for import duty calculation. On April 1, the buyer wires the $13,600 deposit. The manufacturer begins production. On May 20, when goods ship, the manufacturer issues commercial invoice INV-2024-082 (the final, binding document) for $27,200 — this is the document booked to AR and revenue.
Why It Matters for Your Business
Pro forma invoices set price expectations cleanly before work begins, enable international buyers to arrange financing and customs clearance, and serve as the documentary anchor for letters of credit — all without prematurely committing the seller to a binding accounting transaction.
Practical Tips
- •Mark every pro forma invoice clearly with the words "PRO FORMA INVOICE — NOT A TAX INVOICE" to avoid confusion with real invoices and inappropriate accounting entries
- •For international shipments, include HS commodity codes, country of origin, Incoterms (EXW, FOB, CIF, DDP), and currency — these are required by customs authorities worldwide
- •Set a validity period (e.g., "Valid for 30 days") so commodity- or FX-driven prices do not bind you indefinitely
- •Never book a pro forma to AR or revenue — it is not a sale yet, and posting it creates phantom receivables and revenue recognition errors
Common Questions About Pro Forma Invoice
How is pro forma invoice calculated?
The formula is: Pro Forma Invoice Total = Sum of Line Items + Estimated Tax + Estimated Shipping + Other Charges. Final invoice may differ if quantities, exchange rates, or freight actuals vary.. See the worked example below for a step-by-step calculation using realistic numbers.
What is an example of pro forma invoice?
A US manufacturer receives an inquiry from a buyer in Germany for 500 units of custom industrial pumps. The manufacturer prepares a pro forma invoice dated March 15: 500 units × $50 = $25,000, plus estimated shipping $1,800, plus packing/crating $400 = $27,200 total, with payment terms "50% deposit on order confirmation, 50% balance against bill of lading," ship within 60 days FOB Houston. The buyer uses the pro forma to (a) obtain internal purchase order approval, (b) open a $27,200 commercial letter of credit through Deutsche Bank in favor of the manufacturer, and (c) provide the document to German customs as the basis for import duty calculation. On April 1, the buyer wires the $13,600 deposit. The manufacturer begins production. On May 20, when goods ship, the manufacturer issues commercial invoice INV-2024-082 (the final, binding document) for $27,200 — this is the document booked to AR and revenue.
Why does pro forma invoice matter for my business?
Pro forma invoices set price expectations cleanly before work begins, enable international buyers to arrange financing and customs clearance, and serve as the documentary anchor for letters of credit — all without prematurely committing the seller to a binding accounting transaction.
How does FiscalInsights help with pro forma invoice?
FiscalInsights tracks pro forma invoice automatically as part of its AI bookkeeping workflow. Connect your bank accounts and the platform handles categorization, reconciliation, and reporting without manual entry.
Related Terms
More Invoicing Terms
AR Aging
A report categorizing outstanding customer invoices by how long they have been unpaid.
Invoice
A formal document sent from seller to buyer requesting payment for goods or services delivered.
Recurring Invoice
An invoice automatically generated on a fixed schedule for ongoing services or subscriptions.
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