Invoices and receipts look similar — both list items, prices and totals — but they do opposite jobs. An invoice is a request for payment. A receipt is proof that payment has been made. Mixing them up can confuse clients and create bookkeeping problems, so it’s worth getting clear on which one you need.
The difference in one table
| Invoice | Receipt | |
|---|---|---|
| Purpose | Requests payment | Confirms payment was received |
| Timing | Before payment (after or during the work) | After payment |
| Says | “You owe this amount by this date” | “You paid this amount on this date” |
| Key details | Due date, payment terms, bank details | Payment date, payment method, amount paid |
| Balance shown | Amount due | Zero (or remaining balance for partial payments) |
| Used by the buyer to | Approve and schedule a payment; reclaim tax | Prove the expense; claim a refund or reimbursement |
| Used by the seller to | Record income owed (accounts receivable) | Record cash received |
When to send an invoice
Send an invoice whenever a client will pay you later — after delivery, at a milestone, or on a recurring schedule. That’s the normal situation for:
- Freelancers and agencies billing for projects or hours
- B2B sales on credit terms (e.g. Net 30)
- Subscriptions and retainers
- Deposits requested before work starts
An invoice should include a due date and clear payment instructions. Our guide on how to write an invoice covers the details.
When to send a receipt
Send a receipt when you have received money. Typical situations:
- A client pays an invoice and asks for confirmation
- A customer pays on the spot — in a shop, at a market stall, after a repair visit
- You accept a deposit and want to acknowledge it
- A client needs proof of payment for reimbursement, an expense claim or their own taxes
Shops and point-of-sale systems produce receipts automatically. Freelancers and service businesses often don’t — and then a client asks for one. That’s where a receipt generator is handy.
What a receipt should include
| Field | Example |
|---|---|
| “Receipt” label and number | Receipt RCT-2026-0105 |
| Date of payment | 28 October 2026 |
| Seller’s name and contact | Martin Repairs, 4 Oak Lane, Springfield |
| Buyer’s name (optional for retail) | Ana Lopez |
| What was paid for | Boiler service and part replacement |
| Amount paid and currency | $280.00 USD |
| Payment method | Card ending 4412 / bank transfer / cash |
| Related invoice number | For invoice INV-2026-0311 |
| Tax included | Sales tax $18.20 (if applicable) |
| Balance remaining | $0.00 |
Do you ever need both?
Yes, often. In a typical B2B project:
- You send a quote to agree the price (see quote vs. estimate vs. invoice).
- You send an invoice when the work is done.
- The client pays.
- You send a receipt — or mark the invoice as “Paid” — if the client needs confirmation.
Many businesses skip step 4 because the bank statement and the paid invoice are enough evidence. But consumers, people claiming expenses back from an employer, and clients in some countries may specifically ask for a receipt.
Can a paid invoice act as a receipt?
Often, yes, in practice. An invoice marked “PAID” with the payment date and method is accepted as proof of payment in many situations. But it’s not universally interchangeable: some employers’ expense policies, grant programmes or authorities want a document labelled “Receipt”. If someone asks for a receipt, give them one — it takes a minute.
What about paid-on-the-spot sales?
When payment happens at the same time as the sale (e.g. a customer pays cash on delivery), you might issue a single document. In many VAT systems, that document must still meet invoice requirements if the buyer is a business that wants to reclaim VAT. A common approach is an invoice marked “Paid in full on [date] by [method]”. For consumer sales, a receipt is usually enough — though some countries require specific fiscal receipts from registered cash registers.
Partial payments and deposits
If a client pays part of an invoice:
- Issue a receipt for the amount received, referencing the invoice number
- Show the remaining balance
- Don’t change the original invoice — the outstanding amount is still tracked against it
Example: Invoice INV-0042 for €3,000. Client pays a €1,000 deposit. Receipt: “Received €1,000.00 on 28 Oct 2026 by bank transfer towards INV-0042. Balance remaining: €2,000.00.”
Refunds
If you refund money, neither a new invoice nor a negative receipt is ideal. The standard document is a credit note, which reduces or cancels an invoice. See credit notes and refunds.
Tax considerations
- VAT/GST invoices let business buyers reclaim tax. A simple receipt usually isn’t enough for that unless it meets the requirements of a simplified invoice in that country. See what to include on an invoice.
- Record keeping: keep copies of all invoices and receipts you issue. Retention periods vary by country — commonly somewhere between 5 and 10 years.
- Numbering: give receipts their own sequential series (e.g.
RCT-2026-0001) separate from invoices, so your records stay clean. See invoice numbering.
Quick decision guide
- Money not yet received? → Invoice (create one)
- Money just received? → Receipt (create one)
- Price not yet agreed? → Quote (create one)
- Money being returned or an invoice was wrong? → Credit note
This guide explains general practice. Tax and documentation rules vary by country and industry; it is not legal or tax advice.