How do I convert an invoice to a credit note?
Login and go to Your Invoices. Filter or otherwise find the one you'd like to turn into a credit note.
Click on the invoice and you'll see a nice representation of the final invoice that is ready to be sent/was sent to your customer.
If the invoice has already been paid, you need to select the option Refund.
If the invoice is outstanding, then select the option Cancel.
We'll automatically create a credit note for you with the same information as the invoice. Easy!