Receipt vs Invoice: What's the Difference?

The One-Sentence Difference

An invoice requests payment. A receipt confirms payment.

That's the essential distinction. An invoice is sent when you're owed money. A receipt is issued when you've received it.

What Is an Invoice?

An invoice is a formal payment request issued after goods are delivered or services are performed. It tells your client:

How much they owe

What it's for (itemised line items)

When payment is due

How to pay

An invoice creates a legal obligation. Once your client receives it, they're contractually required to pay within the agreed terms.

Key features of an invoice:

Invoice number (unique, for tracking)

Invoice date and due date

Itemised list of goods/services with prices

Subtotal, tax, and total amount due

Your payment details

Your business details and client's billing address

What Is a Receipt?

A receipt is proof that a payment has been made. It's issued after money changes hands, confirming:

How much was paid

What it was for

When and how payment was made (cash, bank transfer, card, etc.)

Who paid and who received the payment

A receipt doesn't request anything — it records a completed transaction. The client uses it as proof of payment; you use it to confirm that the account is settled.

Key features of a receipt:

Receipt number

Date of payment

Amount paid and payment method

Reference to the original invoice (if applicable)

Whether the payment is partial or in full

When Do You Need Each?

Use an invoice when:

You've completed a job and need payment

You've delivered goods and are billing the buyer

You're issuing a monthly statement to a regular client

You're requesting a deposit (proforma invoice)

Issue a receipt when:

A client pays you (in full or partially)

Someone pays in cash and needs proof of the transaction

A client requests written confirmation that their payment was received

You want to update the invoice status from Unpaid to Paid

Can a Document Be Both?

Sometimes. A retail sales receipt — like the one you get from a supermarket — is both a record of the transaction and proof of payment combined, because payment happens immediately at the point of sale.

In B2B transactions, invoices and receipts are usually separate documents because there's a gap between when goods are delivered (invoice issued) and when payment is received (receipt issued).

The Legal Importance

In many countries, receipts are legally required for certain transactions — particularly cash sales above a certain threshold, and for VAT-registered businesses. Failing to issue a receipt can result in compliance issues.

Invoices, meanwhile, form the legal basis for payment claims. A properly formatted invoice is required to pursue an overdue payment through legal channels.

What About Proforma Invoices and Credit Notes?

Proforma invoice: Looks like an invoice but is issued before a sale is finalised — often to confirm a quote or facilitate customs clearance. Not a legal demand for payment.

Credit note: Issued when you need to reduce or cancel an invoice — for example, if goods are returned or a service wasn't delivered. It's the opposite of an invoice: it reduces the amount owed.

Managing Receipts in Quotation Expert

In Quotation Expert, every time you record a payment against an invoice, a receipt is generated automatically. The invoice status updates to Paid or Partially Paid, and you can download the receipt PDF to send to your client. This keeps your records clean and gives clients immediate confirmation that their payment landed.