Invoice vs Receipt: What's the Difference?

An invoice is a request for payment. A receipt is proof that payment was made. That's the whole distinction, and most of the practical differences follow from it.

	Invoice	Receipt
Sent	Before payment	After payment
Purpose	Ask to be paid	Confirm you've been paid
Key date	Due date	Payment date
Shows	Amount due, how to pay	Amount paid, how it was paid
For the customer	A bill to approve	Proof of purchase, expense record
For you	Accounts receivable	Closes the sale

When you send an invoice

Whenever the customer pays after receiving the goods or service. That's most business-to-business work: you finish a project, deliver stock or complete a month of services, and then bill for it. The invoice starts the clock on your payment terms.

When you give a receipt

Whenever you've been paid, and especially when the customer pays on the spot. A cafe, a market stall, a mechanic collecting payment when you pick up the car, a tutor paid in cash after a lesson: none of these involve an invoice at all. The receipt is the only document.

If you invoiced first, a receipt is optional but polite. Many clients, particularly individuals who need to claim expenses, will ask for one.

Do you need both?

Not always. The usual patterns:

• Pay on the spot: receipt only.
• Invoice, then payment by bank transfer: invoice only is common. The bank record proves payment. Send a receipt if asked.
• Invoice, then payment by cash or cheque: give a receipt. There's no bank trail for cash.
• Deposit up front, balance later: a receipt for the deposit, then an invoice showing the deposit as paid and the balance due.

Some businesses skip the separate receipt and send the original invoice back stamped PAID with the payment date. That's acceptable in most places. The generator has a PAID stamp option for exactly this.

What goes on a receipt

A receipt is shorter than an invoice, but it still needs:

• Your business name and contact details
• A receipt number (use a separate series from invoices, like RCT-0001)
• The date of payment
• What was paid for, itemized
• The amount paid, and any tax included
• The payment method: cash, card, bank transfer, cheque
• The customer's name, if you know it

If you're VAT-registered in the UK, the rules for VAT invoices apply to receipts that serve as VAT invoices, with a simplified version allowed for sales of £250 or less.

Why the difference matters at tax time

In your own books, an invoice creates money owed to you (accounts receivable). A receipt records money received. If you account on a cash basis, you count income when the receipt happens; on an accrual basis, when you invoice. Either way, keeping both documents, correctly labeled, makes your records easy to follow.

For your customers, the distinction matters too. An unpaid invoice doesn't prove they spent money. A receipt does. That's why expense claims usually require a receipt, not an invoice.

Quick answers

Is a paid invoice the same as a receipt? Functionally, yes, if it clearly shows it was paid, when and how.

Can a receipt replace an invoice? For point-of-sale transactions, yes. For B2B work with payment terms, no: the client needs the invoice to approve payment in the first place.

What about a bill? "Bill" is usually just another word for invoice, seen from the customer's side. We compare the terms in invoice vs bill.