To add your desired card(s) to your account, you need to do the following:
1. Sign in to your Namecheap account.
2. Choose the Billing option under the Profile menu in the bar on your left.
3. In the Payment section you will see a few options, you need to click on Add New in front of Payment Cards:
4. Fill in the required information for your card and click on the Save Changes button:
: Charges for the Service(s) will be billed to your chosen Payment Method as charges for "NAME-CHEAP.COM." as mentioned in the Namecheap Universal Terms of Service Agreement
. The statement descriptor may also include a unique identifier of the transaction. Namecheap is not responsible for any changes in statement descriptors made by your credit card issuer.
NOTE 2: When you select a default card, you'll enjoy faster checkout and auto-renewals.
If you have one or more cards saved in your account, one of them will be used as default. You can also add up to two backup cards for auto-renewal usage.
To enable the auto-renewal payments for your Namecheap services, please check Can I set up automatic billing for my Namecheap services? article.