Basics
Invoice vs receipt: what's the difference?
People often use the words "invoice" and "receipt" interchangeably, but they do two different jobs. Getting them right makes you look professional and keeps your records clean.
An invoice is a request for payment
You send an invoice before you've been paid. It says, in effect, "here's what you owe and when it's due." An invoice lists the work or products, the amount, and the payment terms. It's the document that starts the payment clock.
A receipt is proof of payment
You send a receipt after payment has been made. It confirms, "you paid this amount on this date." A receipt usually shows the same line items as the invoice, plus the payment method and a clear PAID marker. Your client keeps it as proof for their own records or taxes.
Quick comparison
- Timing: Invoice comes first (before payment); receipt comes after.
- Purpose: Invoice requests money; receipt confirms money was received.
- Key detail: Invoice shows a due date; receipt shows the payment method and marks the total as paid.
Do you need both?
For most transactions, yes. Send an invoice to request payment, then send a receipt once the client pays. It's good practice and clients appreciate it, especially businesses that need the receipt for their bookkeeping.
You can create both for free here: use the invoice generator to bill a client, and the receipt generator to confirm payment with a PAID stamp. Both download as clean PDFs with no signup.
Why the distinction matters for your records
The difference is not merely semantic. The two documents prove different things, and mixing them up creates real problems. An invoice is evidence that money is owed to you, which is what makes it useful if a payment is ever disputed or you need to chase a debt. A receipt is evidence that money changed hands, which is what your client needs to claim the expense against their own taxes.
If you send only receipts, you have no record of what was owed and when it fell due. If you send only invoices, your clients cannot cleanly evidence their expenses. Businesses that deal with other businesses generally need both.
Other documents people confuse with these two
- Quote or estimate. Sent before any work is agreed. A quote is usually a fixed price you are committing to; an estimate is your best guess and may change. Neither one requests payment.
- Purchase order (PO). Issued by the client, not you. It is their internal authorisation to buy from you. If a client uses POs, get the number before invoicing and put it on your invoice, or the invoice may be rejected.
- Proforma invoice. Looks like an invoice but is not a demand for payment. It is typically used to confirm details before the real invoice, or for customs purposes. It should never be entered into accounts as a payable.
- Credit note. The reverse of an invoice. Issue one when you need to cancel or reduce an invoice you have already sent, rather than deleting the original.
- Statement. A summary of all outstanding invoices for one client over a period. Useful for regular clients, but it does not replace the individual invoices.
What belongs on each document
An invoice needs your details, the client's details, a unique invoice number, the issue date, a due date, itemized work, the subtotal, tax, the total owed, and how to pay. The due date and the payment instructions are what turn it from a summary into something that gets paid.
A receipt needs your details, the customer, a receipt number, the date payment was received, what the payment covered, the amount paid, and the payment method. Marking it clearly as paid is the whole point of the document, which is why the receipt generator on this site stamps it automatically.
Do you need to send a receipt every time?
For business clients, it is good practice and often expected. For consumer transactions, requirements vary by country and by payment method, and in many places a receipt must be provided on request even if you do not issue one automatically. Card payments create their own record, which is why many small businesses issue receipts only when asked, but issuing one anyway takes seconds and looks professional.
Digital or paper?
PDFs are the practical default. They look identical on every device, cannot be edited accidentally, and are easy to archive and search later. Most tax authorities accept digital records provided they are complete, legible, and retained for the required period, though the rules differ by country, so it is worth confirming yours. If you do take cash payments, a written receipt matters more than usual, since there is no bank record backing it up.
How long to keep them
Retention periods vary by country and by business type, commonly falling somewhere between three and seven years. Keep both invoices and receipts for the full period, organized by tax year. The simplest approach that survives contact with reality is one folder per year containing a PDF of every document you issued, backed up somewhere other than the laptop you carry around.