Visit the AT&T website at www.att.com. Locate the account access tab on the right-hand side of the screen. Select the telephone account to pay. Wireless telephone accounts or home telephone accounts can be paid online.

Register your account if this is your first time using AT&T online bill-pay. You will need to provide your telephone number, billing address and a valid email address to register.

Sign on to your account by using the username and password you created during registration. Click "Make Payment" to set up your payment. You can pay your account using a credit card or checking account.