Your billing information is located in your secure Client Area, and This article will show you how to update all your necessary billing details. This article will assume that you are already logged into WHMCS. If you are having problems doing that, or don't know how, please view the article named "How to Login to your secure Client Area".
In your secure Client Area menu bar, click on the My Details link. In the My Details screen, you will see your details, including name, address and phone number. In order for payments to be properly processed, this information must be correct. Please confirm all the details.
The next step is to click on the Change Credit Card Details link in the menu bar. You can update your card information, such as expiration date. You can also add a new card. After making any needed changes, click on the Save Changes button.
Click your secure Client Area link. This is the end of this article. You now know how to update your billing information in your secure Client Area of WHMCS.