A client sends the payment, and about five minutes later asks if you could send a receipt over. You sent an invoice last week, so for a second, you wonder if they just didn't see it. They saw it. They need the other document.
This particular mix-up tends to cost money, sometimes a lot of it. And if the customer needed proof of payment and got an invoice instead, their expense report is probably coming back to them rejected.
Learning the rule that separates the two takes about a sentence. Knowing which situation calls for which document takes longer, and so does knowing what has to be on each one and where small businesses tend to get it wrong. Those details are what the rest of this guide is here to cover, one situation at a time.
The one question that settles it
All the question wants to know is whether the payment has happened yet, yes or no.
When the money is still owed, the document to send is an invoice. The invoice is where the customer finds out how much is owed, what the charge is for, and the deadline for paying it. If the customer already paid, they get a receipt instead, and the receipt has one job, which is to record that the payment came in. [1]
A transaction opens with the invoice and stays open until the receipt closes it, however long that takes. On a Net 60 job, a couple of months can pass between the first document and the other. At a store register, the whole thing happens in thirty seconds, and there was never any invoice involved to begin with. And most of the other rules around these documents exist because of that timing. So when you're not sure which one to produce, don't think about formats at all. Start by figuring out where the payment stands. Once that part is clear, there isn't much of a decision left to make about which document goes out.
What a receipt actually does
A receipt exists to prove that the customer paid you. You keep one copy, and the customer keeps the other one. The details on the two copies are identical, starting with the date of the payment and the method, and going on to the amount and to whatever the money was paying for.
In fairness, most receipts never get read again after the day they were issued. They end up in a drawer somewhere, or a glove compartment, and they stay there until somebody cleans the drawer out and tosses the lot. A few of them do end up mattering later, though, and the ones that do tend to matter for one of the reasons below:
- Proof of purchase: somebody questions a transaction six or eight months later, and the side holding the receipt is the side that gets believed. That cuts both ways, for the seller and for the buyer.
- Returns and warranties: try getting a manufacturer to honor a two year warranty without one.
- Expense and tax records: employees attach receipts to their reimbursement claims, and business buyers keep them behind the deductions they claim. The IRS expects the records that support a tax return, receipts included, to be kept for at least three years after the return is filed. [2][3]
- Disputes: a chargeback argument tends to end quickly once a dated, itemized receipt shows up. Without one, the same argument can run for weeks.
Receipts also matter the most in places where no other record exists. A card payment gets recorded in two banking systems, whether anyone wants it to or not. A cash payment gets recorded nowhere, which means the receipt you write out for it is the only documentation that the transaction is ever going to have.
What an invoice actually does
An invoice is a bill you send. On it the customer can see how much they owe, plus what the charge was for, the date it needs to be paid by, and the ways they can pay it. And the invoice stays open until the payment arrives. [5]
Invoices also do quieter work on your side of the books. If your invoices carry numbers, finding out who is overdue takes no digging at all, and how long they've been overdue is right there, too. And the terms end up in writing this way. The due date, any late fee, and the deposit requirement, if you have one.
Five everyday situations and the right document for each
The timing rule covers every case there is.
A counter sale
The payment happens right when the purchase does, which means there is never anything to request, and so no invoice ever gets created.
A cash job
The IRS pays specific attention to unreported cash income at small businesses, so the copy of the receipt you keep for your own records matters every bit as much as the one the customer takes home. [4]
A deposit before work starts
A client just paid your invoice
The step service businesses skip most. Once the payment arrives, a two line receipt referencing the invoice number tells the client it registered and gives both sets of records a clean ending. It takes maybe a minute, and you never get the "did you get my payment?" email, the one that would otherwise arrive about three days from now.
A customer needs documentation weeks after the sale
People lose receipts.
| Situation | Send this | Why |
|---|---|---|
| Counter or retail sale | Receipt | Payment and purchase happen together |
| Completed project, payment due later | Invoice first, receipt after payment | The bill comes before the money |
| Cash payment of any size | Receipt, always | Nothing else records it |
| Deposit or partial payment | Receipt for the amount received | Every payment deserves its own proof |
| Client pays an open invoice | Receipt referencing the invoice | Confirms the payment registered |
| Monthly retainer | Invoice each period, receipt on payment | Recurring billing follows the same rule |
| Lost paperwork request | Copy of the original receipt | Your records back up theirs |
How the two documents work together
On any sale where payment doesn't happen on the spot, the invoice and the receipt are two halves of one record:
- You agree on the work, the price, and the payment terms
- You deliver the goods or finish the service
- You send an invoice stating the amount due and the deadline
- The customer pays through one of the methods you listed
- You match the payment to the open invoice
- You send a receipt and file both documents together
Steps five and six are where the bookkeeping payoff sits. [6]
When one document does both jobs
Point of sale businesses live on receipts alone. Retail, restaurants, salons, the Saturday farmers market — payment is instant, so a request for payment would be theater.
What belongs on each document
Starting with the receipt, the things it needs are these:
- Your business name and contact details
- The date the payment was received
- What was purchased, with quantities and prices
- Tax charged and the total paid
- The payment method (cash, card, transfer, check)
- A receipt number, plus the invoice number if one exists
An invoice should carry:
- Your business details and the customer's
- A unique invoice number and the issue date
- An itemized list of goods or services with amounts
- Subtotal, tax, and total due
- The payment due date and accepted payment methods
- Any terms that apply — late fees, deposit requirements, and so on
Give receipts and invoices separate numbering sequences.
A template that already has the standard fields laid out takes the guessing out of it. MyReceiptMaker has over 100 customizable receipt templates covering retail, restaurant, service, and travel businesses, so the structure part is already done and the only work left is typing in the transaction.
6 common mistakes businesses make with invoices and receipts
1. Stamping the invoice "paid" and stopping there
Some clients are fine with the stamped invoice, and some are not, and reimbursement systems reject it often enough that you can't count on it.
2. Issuing the receipt before the money clears
Wait for the funds.
3. Leaving the payment method off
Paid $450, fine, but paid how?
4. Writing receipts from memory days later
Receipts should be written while the money is still sitting on the table, and every detail is right there in front of you.
5. Treating deposits as too small to bother with
The customer handed over real money, so they're owed real proof of having done it, deposit or not.
6. Assuming the card statement covers it
Treat the bank record as backup for a receipt rather than a substitute for one.
Frequently asked questions
Does a paid invoice count as a receipt?
Sometimes. It depends on who is asking.
Which comes first, the invoice or the receipt?
The invoice, since it requests payment. The receipt follows the money. In a point of sale purchase, the invoice step simply disappears, and the receipt is the only document anyone sees.
Do I need to give a receipt if the customer paid by card?
The bank record proves an amount left an account, but what it was for only shows up on your receipt.
Is a receipt legally required for cash payments?
Depends on the state and sometimes the industry. Whether the law requires it or not, writing a receipt for every cash payment is standard practice, because no other record of that transaction is going to exist anywhere.
The Bottom Line
The whole subject really does come down to the timing of one event. An invoice goes out while the money is still owed. A receipt goes out after the money has arrived, and not before.
And if you'd rather not build the documents themselves from a blank page, MyReceiptMaker's free receipt maker has the templates ready, so you fill in the details of the transaction and download the finished receipt in a few seconds.