Your credit card company must keep up-to-date and accurate information about you on file to assure that you're receiving important communications regarding your account. Also, some credit card companies use your credit card number as your account number, so you don't want your credit card statements to go to another address or email account accidentally. There are so many different ways to manage your credit card account--on your computer, over the phone or via snail mail--that there's no excuse to not update your information regularly.
Register for an online account with your credit card company. You will have to enter your account or credit card number, name, address and email information. When you are logged in, update your credit card information by clicking on "Profile," "Customer Information" or similar.
Send an email to your credit card company's customer service center. In the email, be sure to outline the specific information that needs to change. Only use this method for updating basic information, such as your address or phone number. Don't put in any private information about your account--including the credit card number, checking account number or social security information.
Connect to your credit card company's chat service. Many credit card companies (like Bank of America) now have convenient online chat capabilities that allow you to immediately communicate with a credit card representative to update your information.
Call your credit card company to give it the updated information. Type in your credit card company's name and the phrase "800 number" to find the number.
Send your credit card company a letter outlining your new information. Be sure to sign the note and add your name and account number to the separate page in case it somehow gets separated from your payment during processing. If you regularly mail in your payments, you can write a note on the bill stub noting the new credit card information.