To change billing information, AT&T log into your myAT&T account and choose Profile at the top of the page. Then select the correct wireless account, choose Billing Contact Information, choose Edit, update the information, then choose Save Changes.Continue Reading
The official AT&T entry regarding changing billing information mentions that changing the billing account name must be conducted via phone, by calling 800-331-0500 or 611 from an AT&T phone as of April 2015. To change the billing address of multiple accounts, the billing address for each account must be changed individually. AT&T also notes that accounts less than 30 days old, for which the first payment has not yet been processed, cannot change billing addresses.
The entry also stresses that changing the billing address does not change the taxation rate on the AT&T account, which is determined by the place of primary use. To update the place of primary use, users are instructed to visit the nearest AT&T store or call the aforementioned service numbers. For the primary use address update to be successful, AT&T instructs users to change both their billing addresses and their primary use addresses to the same location. The primary billing address must be a residence or business; P.O. boxes are unacceptable.Learn more about Mobile