Evrenus Fırat Polat · ·
These three words get used interchangeably in everyday conversation, but they mean specific, different things in business. Sending the wrong one confuses clients and can cause real accounting problems.
Quote: before the work, an offer
A quote (or estimate) is what you send before work begins. It says: "here's what I propose to do, and here's roughly what it will cost." A quote is not a request for payment. It is a proposal the client can accept, reject, or negotiate. Nothing has been delivered yet, so nothing is owed yet.
Use a quote when a client asks "how much would this cost?" before committing to anything. Our quote generator builds one in a few minutes. If the price is a rough range rather than a firm figure, see estimate vs. quote.
Invoice: after the work, a request for payment
An invoice is what you send after goods or services have been delivered, or partway through a longer project at agreed milestones. It is a formal request for payment: here's what was provided, here's what's owed, here's when it's due. Unlike a quote, an invoice creates an obligation. It shows up in both your books and the client's as a receivable and a payable.
Use an invoice once work is done (or a milestone is reached) and you are ready to be paid. The invoice generator covers this, and what to include on an invoice lists the fields.
Receipt: after payment, proof it happened
A receipt is what you issue after payment has been received. It is not a request for anything. It confirms that a specific amount was paid, on a specific date, for a specific thing. Receipts matter for the client's bookkeeping and expense records, and for your own record of what has been collected versus what is still outstanding.
Use a receipt once money has actually changed hands. Our receipt generator does this.
Side-by-side comparison
| Quote | Invoice | Receipt | |
|---|---|---|---|
| When | Before work | After work | After payment |
| Purpose | Propose a price | Request payment | Confirm payment |
| Creates an obligation? | No, until accepted | Yes | No, it closes one |
| Has a due date? | Usually an expiry date | Yes | No |
| Key detail | Scope and validity period | Amount and due date | Amount, date, method |
Worked example: one job, three documents
A freelance photographer is hired for a product shoot.
1. Quote (March 1). Half-day shoot at $400, 20 edited images at $15 each = $300, total $700. Valid for 30 days. The client replies "yes, go ahead."
2. Invoice (March 12). After delivery, the photographer sends an invoice: shoot $400 + 20 images × $15 ($300) = $700. A sales tax of 8% would add $56, for a total of $756. Payment is due in 14 days, March 26.
3. Receipt (March 20). The client pays $756 by bank transfer. The photographer issues a receipt: "Received $756.00 on March 20 against INV-0031, by bank transfer."
The amounts match at each step. If scope changed along the way, the invoice should explain the difference from the quote. Tax rules differ by country, so check with an accountant how tax should be shown on each document.
Choosing quickly: a short checklist
- Has the client agreed to buy yet? If not, send a quote.
- Is the work (or a milestone) done and you want payment? Send an invoice.
- Has the money arrived? Send a receipt.
- Is it a same-moment sale, like a retail purchase? A receipt alone is usually enough.
Common mistakes
- Calling a quote an invoice. The client may think they already owe money, or their system may book a payable that does not exist.
- Sending a receipt before payment clears. A receipt is proof. Wait for the money.
- Reusing the same number across documents. Give each type its own prefix, as described in invoice numbering.
- No link between documents. Reference the quote number on the invoice and the invoice number on the receipt. It helps payment reconciliation.
- Forgetting the quote's expiry date. Prices change. A validity period protects you.
FAQ
Is an estimate the same as a quote?
Not always. An estimate is a best guess that can change, while a quote is a firm price. Read estimate vs. quote for details.
Do I need to issue a receipt if I already sent an invoice?
Often a "paid" invoice is enough, but many clients like a separate receipt for their records. Some local rules require one for certain payment types. Ask your accountant what applies to you.
Can a quote turn into an invoice?
Yes. Once the client accepts, you can copy its line items into an invoice. See estimate to paid invoice for the full flow.
What if the client wants to pay before the work starts?
Send a pro forma invoice or a deposit invoice, then a final invoice crediting what was paid.
Matching the right document to the right moment keeps your paperwork, and your client's, accurate. Our free document generators cover all three, along with credit notes and purchase orders.