Your account page is on Office.com. After you sign in, click the arrow next to your name, and then click My Account.
Your Microsoft account is a one stop for all Microsoft partner billing information. Manage all your Microsoft billing accounts in one place - Windows 8, Windows Phone, Xbox 360, Office 365, Azure and more.
Provides information about managing payment options like adding, editing or removing credit card or PayPal information, managing and cancelling subscriptions, pre-paid codes, and getting refunds.