Proforma Invoice: What It Is and When to Use One

A proforma invoice is a preliminary document sent before goods are delivered or services are performed. Unlike a standard invoice that requests payment for completed work, a proforma invoice is an estimate or quote that shows the buyer what the final invoice will look like. It is commonly used in international trade, customs declarations, and as a formal price confirmation before a transaction.

Proforma invoices serve several important purposes. They give buyers a detailed breakdown of expected costs before committing to a purchase. In international trade, customs authorities use them to assess duties and taxes on incoming shipments. Banks may require proforma invoices for letters of credit or trade financing. And in many business relationships, they function as a formal agreement on pricing and terms before work begins.

A proforma invoice should contain the same information as a regular invoice: seller and buyer details, a description of goods or services, quantities, unit prices, totals, and any applicable taxes or shipping costs. The key difference is that it should be clearly marked as "Proforma Invoice" to distinguish it from a binding invoice. It should also include a validity period, since prices and availability may change.

EasyInvoice lets you create professional estimates and proforma invoices with the same ease as regular invoices. Design your proforma with your company branding, add detailed line items, and send it to your client or trading partner as a polished PDF. When the deal is confirmed, convert the proforma into a final invoice with a single tap, carrying over all details without re-entering anything.

Understanding when to use a proforma invoice versus a regular invoice or estimate is important. Use a proforma invoice when the buyer needs a formal cost document before placing an order, when shipping goods internationally and customs requires advance documentation, or when a bank or financial institution needs proof of a pending transaction. For standard client billing after work is completed, use a regular invoice instead.