An invoice asks for payment. A receipt confirms payment has been made. They are issued at different stages of a transaction and serve different purposes.

What Is an Invoice?

An invoice is a document sent by a seller to a buyer requesting payment for goods or services. It is issued before payment is received and includes:

  • Seller and buyer contact information
  • Invoice number and date
  • Description of goods or services
  • Quantities, rates, and total amount due
  • Payment terms and due date
  • Accepted payment methods

Invoices create a legal obligation for the buyer to pay within the agreed terms.

What Is a Receipt?

A receipt is a document issued after payment has been received. It serves as proof that the buyer has paid for the goods or services. A receipt typically includes:

  • Seller information
  • Date of payment
  • Amount paid
  • Payment method used
  • Reference to the original invoice (if applicable)

Receipts are important for the buyer's records, tax deductions, and expense tracking.

Side-by-Side Comparison

  • Timing: Invoice is sent before payment; receipt is issued after payment
  • Purpose: Invoice requests money; receipt confirms money received
  • Legal role: Invoice creates a payment obligation; receipt provides proof of fulfillment
  • Who needs it: Seller needs the invoice for accounts receivable; buyer needs the receipt for expense records
  • Numbering: Both should have unique reference numbers

Example

A plumber completes a repair job:

  1. Invoice — sent to the homeowner: "Pipe repair service — $350. Payment due within 15 days."
  2. The homeowner pays $350 via bank transfer.
  3. Receipt — sent to the homeowner: "Payment of $350 received on November 5, 2026. Thank you."

The homeowner keeps the receipt for their home maintenance records. The plumber marks the invoice as paid in their accounting system.

Common Mistakes

  • Treating an invoice as a receipt. An invoice is not proof of payment, even if the client has paid. Always issue a separate receipt or mark the invoice as "PAID."
  • Not issuing receipts. Some businesses skip receipts, but clients may need them for tax deductions or reimbursement.
  • Confusing the two on taxes. Tax authorities may require actual receipts (not invoices) as proof of business expenses.
  • Sending a receipt before payment clears. Wait until the payment has fully processed before issuing a receipt, especially for checks or bank transfers.