After signing in, you can do one of the following to check your account balance:
Select Home. The balance in your account, including expiring balances, is displayed under Money & gift cards.
To view more details about your balance, select Payment & billing, and then select Payment Options. You may be prompted to sign in again. This displays the balance in your account, including expiring balances, and options to add more money to your account.
Xbox One console steps: Check your Microsoft account balance
Press the Xbox button to open the guide.
Select Sign in.
Scroll down and select your account to sign in.
Select All Settings.
Under Account,select Payment & billing. Your account balance appears near the bottom of the screen.
Xbox 360 console steps: Check your Microsoft account balance
Sign in using your Xbox Live-enabled gamertag.
From the Dashboard, go to settings and then Account.
Select Manage Payment Options.
Your account balance appears at the top of the list.