You finish a job, send your client a document with the total, and they pay. A week later they ask: "Can you send me a receipt?" Wasn't that what the invoice was?
Not quite. The difference between an invoice and a receipt is timing and purpose: an invoice asks for money, a receipt proves the money arrived. Here's when to send each, what each must include, and what both look like for the same freelance job.
Key takeaways
An invoice is a request for payment. It comes before the client pays and says how much, for what and by when.
A receipt is proof of payment. It comes after the client pays and says how much was paid, when and how.
An invoice isn't a receipt, but an invoice marked paid, with the payment date and method, often does the job.
Freelancers mostly send invoices. Receipts matter for cash payments, deposits, clients who ask, and on-the-spot sales.
Keep copies of both. The IRS lists invoices and receipt books among the records that back up your income.
Invoice vs receipt: the differences at a glance
Invoice | Receipt | |
|---|---|---|
What it does | Asks the client to pay | Confirms the client paid |
When it's sent | After the work or sale, before payment (or before work, for a deposit) | Right after payment |
Key date | Invoice date and due date | Payment date |
Amount | Amount owed | Amount paid, and any balance left |
Payment terms | Yes: due date, accepted methods, late fee policy | No, payment is done |
Payment method | How the client can pay | How the client did pay |
Who uses it | The client's accounts payable to approve and pay; you to track what's owed | The client as proof of purchase or for expenses; you to record income |
Typical number | INV-0042 | RCT-0042, or "Payment for INV-0042" |
What is an invoice?
An invoice is the document you send to ask for payment. It lists the work you did or the goods you sold, the price, the total due, and when and how to pay. For a business client, it's what their accounts payable team needs before anyone releases the money.
Freelancers usually invoice after delivering the work, at milestones on longer projects, or upfront for a deposit. The invoice also sets the rules: your due date (for example Net 30), your payment methods and any late fee.
What is a receipt?
A receipt is the document that confirms a payment was made. It shows the amount received, the date, the method and what it was for. For the client, it's proof they paid, which they may need for their expense report, their bookkeeping or a reimbursement. For you, it's a record of income received.
Shops print receipts at the till. Freelancers usually send them by email after a payment comes in, often as a short PDF.
Is an invoice a receipt?
No. An unpaid invoice is a bill: it says money is owed, not that it was paid.
Once the client pays, though, an invoice can carry the proof. Mark it PAID, add the payment date and method, and the invoice tells the full story. Many clients accept a paid invoice as their receipt, and many invoicing apps let the client see the paid status on the same invoice link.
When should you still send a separate receipt?
The client asks for one. Their expense policy may require a document called a receipt.
They paid in cash or by a method that leaves no record on their side.
They paid a deposit or part of the total. A receipt for the deposit confirms what's been paid and what's still due.
The sale and the payment happen at once, like a print sale at a market or a session paid on the spot. Then a sales receipt replaces the invoice.
Sales receipt vs invoice
A sales receipt records a sale that's paid on the spot: what was sold, the price and the payment, all in one document. There's nothing to invoice because nothing is owed. An invoice is for anything paid later. If you deliver work first and get paid in 30 days, you need an invoice; if a client pays the moment they buy, a sales receipt is enough.
When to send each: the order of documents
For a typical freelance project, the documents come in this order:
Estimate or quote before the work: what it will probably cost. See estimate vs invoice.
Proforma invoice (sometimes) when a client needs a formal document to approve a prepayment. See proforma invoice vs invoice.
Invoice when the work is done or a milestone is reached: the request for payment.
Payment by card, bank transfer, check or cash.
Receipt, or the invoice marked paid, to confirm the payment.
What an invoice must include
The word "Invoice" and a unique invoice number
Your name or business name, address and email
The client's name or business name and address
The invoice date and the due date
A description of each service or product, with quantity, rate and line total
Subtotal, any discount, tax if you charge it, and the total due
Payment methods and terms (for example "Net 30, bank transfer or card through the link")
If you bill clients in the UK and both of you are VAT-registered, an invoice is required by law and has to show specific details; GOV.UK lists them. For every field in detail, see how to make an invoice, and for line items, the guide to an itemized invoice.
What a receipt must include
The word "Receipt" and a receipt number
Your name or business name and contact details
The client's name
The date the payment was received
What it was for, ideally with the invoice number it settles
The amount paid and the payment method (card, bank transfer, check, cash)
The balance still due, if it was a partial payment or deposit
A receipt can be short. It doesn't need payment terms, because nothing is left to pay, unless it was a deposit.
Example: the same job as an invoice and as a receipt
A freelance photographer shoots a product catalog for a small online shop.
The invoice, sent on March 3:
Invoice INV-0108 | |
|---|---|
Bill to | Linen & Co. |
Invoice date | March 3, 2026 |
Due date | March 17, 2026 (Net 14) |
Product photography, half day (4 hours × $150) | $600.00 |
Editing and retouching, 40 images × $8 | $320.00 |
Total due | $920.00 |
How to pay | Card through the invoice link, or bank transfer |
The receipt, sent on March 12 after the client paid:
Receipt RCT-0108 | |
|---|---|
Received from | Linen & Co. |
Payment date | March 12, 2026 |
For | Invoice INV-0108, product photography and editing |
Amount paid | $920.00 |
Payment method | Bank transfer |
Balance due | $0.00 |
Same job, same amount, two different jobs to do: the first one gets you paid, the second one closes the loop.
Types of receipts freelancers use
Payment receipt: confirms a payment against an invoice, like the example above.
Deposit receipt: confirms an upfront payment and shows the balance still due.
Sales receipt: records a sale paid on the spot, with no invoice before it.
Cash receipt: any receipt for a cash payment. Always give one, because cash leaves no trail.
Itemized receipt: lists each item or service paid for, which many expense policies require.
Why you should keep both
Invoices and receipts are your evidence when the IRS asks where your numbers came from. Its guide to what records to keep lists invoices and receipt books among the documents that support your gross receipts, and for business purchases it wants proof of payment, such as credit card receipts. How long to keep them: generally 3 years from the date you filed your return, longer in some cases.
Practically, keep:
Every invoice you send, with its paid date. That's your income record.
Every receipt for a business expense, like software, gear or travel. That's your deduction record.
The receipts you send if you take cash or deposits.
At tax time, the freelancer's guide to tax season shows how these records fit together.
Where Onigiri fits
Onigiri is an invoicing app for freelancers. You create an invoice, send it by email or link, and your client can pay by card, Apple Pay or Google Pay right from the link. When a card payment goes through, the invoice is marked Paid automatically, so you and your client both see that it's settled. For bank transfers or cash, mark it paid yourself.
On the client's side, paying an invoice is simple; our guide on how to pay an invoice is a good link to share with first-time clients.
Need one invoice right now? The free invoice generator makes a PDF in a couple of minutes, no signup.
