Webhow to pay a sam's club mastercard bill online? Visit www. samsclub. com/content/credit and sign in or create an online account. Websam's club credit online account management. To login to your credit account online: Click on your card below or look up your account type. Webactivate and start using your sam's club credit card right away. Register online to manage your account and see all your benefits. Weblocated on your card or on your statement. Last 4 of ssn. We ask for this to protect your account and prevent unauthorized…