To find out how much time is remaining on a Microsoft Xbox Live subscription, log into the Xbox service's website and view the transaction history for the account. In the account area of the site, the expiration date for any current subscription is listed.
Update the Xbox Live subscription at any time, including extending the expiration date, by paying for more time or completely cancelling the service. A complete transaction history is available as well, displaying any previous subscription payments, purchases and other downloads. Users with more than one console are unable to differentiate between them when looking at the transaction history.