What Is a Credit Note?

What is a credit note?

A credit note is a financial document issued by a seller to correct or reduce the value of an existing invoice. It shows that the customer no longer owes part or all of the amount originally charged.

Credit notes are connected to earlier invoices and should normally reference the original invoice number. This creates a clear record showing the original charge and the later adjustment.

Instead of deleting an invoice or changing its value without explanation, a credit note records why the amount owed has been reduced. This helps businesses maintain clear customer and financial records.

What is a credit note used for?

Businesses issue credit notes for many reasons. A credit note may be needed when an invoice is incorrect or when the value of a transaction changes after the invoice has been sent.

• A customer was charged too much
• Goods were returned by the customer
• Products arrived damaged
• Part of a service was cancelled
• A service was not completed
• The wrong quantity was included on an invoice
• An incorrect price was charged
• A discount was agreed after invoicing
• An order was cancelled
• A customer is due a full or partial refund

How does a credit note work?

A credit note reduces the balance connected to an existing invoice. The amount credited depends on whether the entire invoice or only part of the invoice needs to be adjusted.

For example, imagine that a customer receives an invoice for £400 but later returns goods worth £100. The business can issue a credit note for £100. The original invoice remains in the records, while the credit note shows that the amount owed has been reduced.

If the customer has not yet paid, the remaining balance would be £300. If the customer has already paid the full £400, the business may need to refund £100 or apply the credit to a future purchase with the agreement of the customer.

What should a credit note include?

A professional credit note should contain enough information to identify the business, customer, original invoice, and reason for the adjustment.

• The words Credit Note
• A unique credit note number
• The date the credit note was issued
• The business name and contact details
• The customer name and billing details
• The original invoice number
• A description of the goods or services
• The reason the credit was issued
• The amount being credited
• Any relevant tax adjustment
• The remaining invoice balance

What is a full credit note?

A full credit note reduces the entire value of an invoice. It may be used when an order is completely cancelled, all goods are returned, or an invoice was issued when no payment should have been requested.

For example, if an invoice has a total value of £500 and the entire transaction is cancelled, a credit note for £500 can reduce the remaining balance to zero.

The original invoice should still be kept as part of the business records. The credit note explains why the full amount is no longer owed.

What is a partial credit note?

A partial credit note reduces only part of an invoice. It is commonly used when some goods are returned, part of a service is cancelled, or the customer was charged too much for one item.

For example, a contractor may issue an invoice for £1,000 before agreeing to reduce one service charge by £150. A partial credit note for £150 would leave a remaining invoice balance of £850.

The credit note should clearly describe which charge has been reduced so the customer can understand the updated amount.

Credit note example

Imagine that a window cleaning business invoices a customer £240 for several cleaning services. After reviewing the invoice, the business discovers that an additional service worth £40 was included by mistake.

The business can issue a credit note for £40 and reference the original invoice number. The reason may explain that the additional service was not provided and has been removed from the customer balance.

If the invoice has not been paid, the customer would now owe £200. If the customer has already paid £240, the business may provide a £40 refund.

What is the difference between a credit note and an invoice?

An invoice requests payment from a customer for goods or services. It normally increases the amount the customer owes to a business.

A credit note reduces an amount that was previously charged on an invoice. It does not normally request a new payment. Instead, it records a reduction, cancellation, return, discount, or other adjustment.

Both documents should be kept because together they provide a complete record of the original charge and the later correction.

Is a credit note the same as a refund?

A credit note and a refund are connected, but they are not the same. A credit note records a reduction in the amount charged to the customer. A refund is the return of money that the customer has already paid.

If an unpaid invoice is reduced, a credit note may be enough because no money has been returned. The customer simply pays the lower remaining balance.

If the customer has already paid the original amount, the business may issue a credit note to record the adjustment and then provide a refund.

Why should businesses keep credit note records?

Keeping credit notes with their original invoices creates a clear history of customer charges and later adjustments. This can help businesses review payments, returns, refunds, discounts, and invoice corrections.

Credit note records can also explain why the amount received from a customer is lower than the value shown on the original invoice.

Businesses should avoid deleting the original invoice after issuing a credit note. Keeping both documents provides a clearer record of the complete transaction.

Create clear and accurate invoices

Clear invoices can reduce customer questions and make future corrections easier to understand. Before sending an invoice, review the customer details, invoice number, dates, item descriptions, quantities, rates, taxes, discounts, and final amount due.

InvoiceAtlas allows you to create and review a professional invoice before downloading it as a PDF. Checking each section before sending can help reduce common invoice mistakes.