WHMCS includes reporting tools to help you track all aspects of your business. You can easily view your top clients, product income, and other important stats. It's also easy to export your WHMCS data in JSON or CSV formats.
Custom reports are simple to create: just copy and modify an existing report to customize it or create one from scratch.
Make sure to check out WHMCS's other features to find out more about what WHMCS can do for you.