Invoices and receipts are both billing documents, but they serve opposite moments in a transaction — and mixing them up can cause real accounting confusion.
What is an invoice?
An invoice is a request for payment. It's sent before money changes hands, listing what was delivered or will be delivered, and asking the client to pay by a certain date. Think of it as the bill.
What is a receipt?
A receipt is proof that payment has already been made. It's issued after the transaction is complete, confirming the amount received, the date, and the payment method used.
Key differences
- Timing: Invoices come before payment; receipts come after.
- Purpose: Invoices request money; receipts confirm money was received.
- Legal weight: A receipt is evidence of a completed transaction, useful for expense claims and tax records.
Do you need both?
For most freelance and small business transactions, yes. Send an invoice to request payment, then issue a simple receipt (or mark the invoice 'Paid') once the client has settled it. This keeps a clean paper trail for both parties.
A simple rule to remember
If money hasn't moved yet, you need an invoice. If money has already moved, you need a receipt.