Invoice vs Receipt

The short answer

An invoice requests payment before the money has changed hands. A receipt confirms that payment has been received. The two documents can describe the same transaction, but at different moments: the invoice comes first, the receipt comes after the customer pays. In a typical sale, you issue an invoice when you deliver the goods or services, the customer pays, and you issue a receipt to acknowledge the payment. The invoice is a request; the receipt is a proof.

When to send an invoice

Send an invoice when you have supplied goods or services and you want the customer to pay. For services, that is usually after the work is delivered; for goods, it is usually at or shortly after delivery. For longer contracts, you may issue progress invoices at agreed milestones rather than one bill at the end. An invoice always carries a due date and payment terms — without those, it is closer to a quotation than a real demand for payment.

Some businesses send the invoice before delivery: a deposit on a large job, a proforma invoice to confirm an international order before shipment, a subscription that bills in advance. In every case, the invoice is the document that records what is owed and when it is due.

When to issue a receipt

Issue a receipt when the payment has actually arrived. The receipt confirms the amount, the date received, the method of payment, and a reference back to the original invoice (or to the sale itself if no invoice was issued). Retail point-of-sale systems issue receipts at the till because the transaction is settled instantly. Service businesses issue receipts after the customer pays an invoice — sometimes a printed receipt, sometimes a simple email confirmation that references the invoice number and the amount received.

A receipt does not need to repeat the line items from the invoice; it can simply state the amount received, the date, the method, and the invoice number it settles. The point is proof of payment, not a re-statement of the bill.

Comparison table

What an invoice must contain

• The word “Invoice” clearly displayed
• A unique invoice number and issue date
• Supplier name, address, and tax ID where required
• Customer name and billing address
• Description, quantity, and unit price for each line
• Subtotal, discount, tax, and grand total
• Payment terms and a clear due date
• Accepted payment methods and account details

What a receipt must contain

• The word “Receipt” (or “Payment Receipt”)
• A unique receipt number and the date received
• The amount received and the method of payment
• The name of the payer and a reference to the original invoice
• Your business name and contact details
• Any signature or stamp required by your jurisdiction

How they fit the workflow

In a clean sales workflow, both documents exist and reference each other. You issue an invoice when the work is delivered. The customer pays against the invoice, ideally quoting the invoice number on the payment. You issue a receipt that confirms the amount received, the method, the date, and the original invoice number. Your books now have a closed loop: invoice issued, payment received, receipt issued, all three documents cross-referenced.

In some businesses, the invoice is skipped entirely. A retail shop sells over the counter, takes payment immediately, and issues a single document — the receipt — that serves as both invoice and receipt. In a service business with a long billing cycle, both documents are normal and expected.

Who keeps which document?

Both the seller and the customer keep copies of both documents, but for slightly different reasons. The seller keeps invoices to record what is owed and receipts to record what has been collected; together they form the accounts-receivable ledger. The customer keeps invoices to track what they owe and to support tax-deductible expense claims, and keeps receipts as proof that they paid. Retention rules vary by jurisdiction but typically run to several years — five to seven is common in many tax systems. Keep digital copies in at least two places (cloud plus local backup) so a single hardware failure does not wipe out years of records.

If you issue a refund or a credit, a third document type — a credit note — sits between the invoice and the receipt. It reduces the amount owed on an invoice, or refunds an amount already paid. The credit note references the original invoice number so the books stay consistent on both sides.

Frequently asked questions