What is a Proforma Invoice and When Should You Send One?

SL
SmoothLedger Editorial TeamVerified financial & SaaS content
Published November 19, 20259 min read
Guide Summary & Key Takeaways

It looks like an invoice, but it isn't a demand for payment. Learn how to use Proforma Invoices for customs, international trade, and pre-payments.

In the world of invoicing, the "Proforma" is a unique document. It sits somewhere between a Quotation and a Commercial Invoice. Using it correctly can speed up customs clearance, secure upfront payments, and establish a professional relationship with international buyers.

Proforma Invoice Definition

A Proforma Invoice is a preliminary bill of sale. It is sent to a buyer before the goods are shipped or delivered.

Unlike a standard invoice, a Proforma Invoice is not a legal demand for payment (and therefore, you don't use it for accounting/tax purposes yet). It creates a "good faith" agreement on the price, quantity, and shipping details.

When to Use It

  • International Trade (Customs): Customs agents often require a Proforma Invoice to calculate duties and taxes before the goods arrive.
  • Securing Financing: A buyer might need a Proforma Invoice to show their bank to get a Letter of Credit to pay you.
  • Advance Payments: If you require a deposit before starting work, you send a Proforma Invoice to request that payment.
  • Internal Budgeting: Some companies require a Proforma before they can approve a purchase order, so their finance team can allocate budget.

Key Differences from a Regular Invoice

  • It is clearly labeled "PROFORMA INVOICE" (not "INVOICE")
  • It is not recorded as accounts receivable
  • It does not trigger tax obligations
  • The amounts may be estimates that could change before final invoicing
  • It typically includes estimated shipping costs and delivery timelines
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