MSFT on a billing statement stands for Microsoft, and this often indicates a charge for a Microsoft service subscription, such as Xbox Live, states BillGuard. People who see this charge on a financial statement but who don't subscribe to a Microsoft product should contact their banks or credit card providers. This can lead to a refund for an unauthorized charge, suggests the Consumer Financial Protection Bureau.
One way to find out what Microsoft is billing a person for is to contact Microsoft's support via phone or email, according to the contact page on the Microsoft website. Another option is to visit the Microsoft Support website, look for the "Accounts and Billing" option and then log in to see active subscriptions and billing information.