You can check your Amazon.com Gift Card balance whenever you want as long as there's a credit on your card. Just go to Your Account and click View Gift Card Balance & Activity in the Payment Options section of Personal Information. If you don't have a credit on your card, go to Your Account and click Redeem Gift Card in the Payment Options section of Personal Information . You will be asked to sign into your account and provide an email address if you'd like notifications when your balance falls below a certain amount.