> For the complete documentation index, see [llms.txt](https://user-help.runmags.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://user-help.runmags.com/finance/managing-mistakes/crediting-an-invoice-by-issuing-a-credit-note.md).
# Crediting an invoice by issuing a credit note
If a customer cancels their order in some way after you have created an invoice, you can credit the invoice in RunMags to make sure that it's removed from the billing cycle. A credit note is a way of refunding an invoice that has already been issued or paid. You need to use a credit note because you cannot delete an invoice once it has been issued.
### Creating a credit note
Go to the specific customer account and open the Invoices tab. Select the invoice line you want to credit and click the Credit note button on the lower left. This will create the Credit note that can also be printed and/or emailed to the customer if needed.
### Why credit notes?
There are a number of reasons why you may need to issue a credit note. Here are some of the most common examples:
* You issue an invoice by mistake.
* You issue an invoice for the incorrect amount (you overcharge someone).
* A customer is unhappy with the service you provided and wants a refund.
When this happens you can’t simply delete or amend an invoice, you need to issue a credit note. This effectively cancels out the money you no longer want to charge.
The reason why you can't edit or delete an invoice is for tax compliance reasons and to maintain a solid sequence of invoice numbers.
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