In the CentralNic Reseller system the billing contact configured in your registrar settings receives invoices and statements by email. Additionally, all invoices are also available for download on our FTP server.
You can also find the invoices in CNR Control Panel under "Account Balance" -> Invoices & Statements
The PDF file contains a summary of the positions, while the TXT file contains single positions, including price and the domain name or service that was charged.