Is a proforma invoice legally binding?

No. It’s a good-faith estimate, not an accounting document or a demand for payment. The final commercial or sales invoice replaces it once the sale is confirmed.

Can you pay against a proforma invoice?

A buyer can choose to pay a deposit or advance against a proforma, and it’s often used exactly for that. But it isn’t the official record of the sale — you still issue a final invoice once the order is fulfilled.

Does a proforma invoice have a number?

Yes — give it a reference number and date like any document, but keep proforma numbering separate from your real invoice sequence so your accounts stay clean.

What Is a Proforma Invoice?

A proforma invoice is a preliminary bill of sale sent to a buyer before goods or services are delivered. It’s used for quotes, advance-payment requests and customs — but it isn’t a demand for payment.

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When to use a proforma invoice

To give a buyer a detailed price quote before they commit
To request an advance/deposit before starting work or shipping
For customs, to declare the value of goods being shipped
When the final details (quantities, shipping) aren’t confirmed yet

Proforma vs commercial vs standard invoice

A proforma invoice is an estimate sent before the sale. A commercial invoice is the final document used for an actual international shipment and customs. A standard (sales) invoice is the request for payment after a normal sale.

What to include on a proforma invoice

A clear “Proforma Invoice” label, a number and the date
Seller and buyer details
A description of goods/services with quantities and unit prices
The estimated total, currency and validity period
Shipping terms (Incoterms) and any estimated taxes/duties

Proforma invoice vs a quote

A proforma invoice and a quote overlap — both are sent before payment and neither demands money. The difference is formality and detail. A quote is usually a simpler price estimate to win the work; a proforma invoice looks like a real invoice (line items, totals, tax, shipping terms) and is often used once the buyer has broadly agreed, to confirm the numbers, request a deposit, or clear customs. If you just need to give a price, a quote is fine; if the buyer needs a formal document to arrange payment or shipping, use a proforma.

What happens after a proforma invoice

The proforma is a placeholder. Once the sale is confirmed and the goods or services are delivered, you issue the final commercial or sales invoice — the real accounting document the buyer pays against and records for tax. The final invoice should match the agreed proforma, with any last adjustments (actual quantities, final shipping costs) reflected.

FAQ

Is a proforma invoice legally binding?: No. It’s a good-faith estimate, not an accounting document or a demand for payment. The final commercial or sales invoice replaces it once the sale is confirmed.
Can you pay against a proforma invoice?: A buyer can choose to pay a deposit or advance against a proforma, and it’s often used exactly for that. But it isn’t the official record of the sale — you still issue a final invoice once the order is fulfilled.
Does a proforma invoice have a number?: Yes — give it a reference number and date like any document, but keep proforma numbering separate from your real invoice sequence so your accounts stay clean.