OptiDrop

Proforma Invoice Generator

Generate professional proforma invoices with itemized products, tax calculations, and terms. Perfect for advance orders and international trade. Download as PDF instantly.

Items / Services

Description Qty Rate Amount
Subtotal: $0.00
Tax (18%): $0.00
Total: $0.00

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Free Proforma Invoice Generator — Create Advance Invoices Online

OptiDrop's Proforma Invoice Generator helps businesses create professional proforma invoices for advance orders, international trade, and cost estimates. A proforma invoice is a preliminary bill of sale sent before goods or services are delivered, giving the buyer a clear picture of the expected costs.

When to Use a Proforma Invoice

Proforma invoices are ideal for international shipments (customs use them for duty calculations), advance payment requests, budget approval processes, letter of credit transactions, and when you need to commit to pricing before finalizing the order.

Not a Tax Invoice

A proforma invoice is clearly marked as such and is not a legal demand for payment. It cannot be used for accounting or tax purposes. Once the order is confirmed and goods are delivered, a proper tax invoice should be issued. This tool clearly marks the document as "PROFORMA INVOICE" to avoid confusion.

Frequently Asked Questions

A proforma invoice is a preliminary bill of sale sent to a buyer before the goods or services are delivered. It provides an estimate of what the final invoice will look like, including the items, quantities, prices, and total cost. It is not a demand for payment but rather a commitment to deliver goods at the stated prices.
A proforma invoice is a preliminary document sent before a sale is finalized — it is not a legal demand for payment and cannot be used for accounting purposes. A regular invoice is a formal demand for payment issued after goods or services have been delivered and is a legally binding document.
Proforma invoices are commonly used for international trade (customs declarations), advance orders, when a buyer needs cost estimates for budget approval, and for letter of credit transactions. They help set clear expectations about pricing before the transaction is finalized.
No, a proforma invoice is not legally binding and cannot be used as a formal demand for payment. It is a preliminary document that outlines the expected costs. However, it does represent a good-faith estimate, and significant deviations from the proforma pricing in the final invoice may lead to disputes.

Last updated: June 2026