Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Gülsen,
I understand that you want to use your Microsoft balance to purchase the subscription, however upon checking, Microsoft balance cannot be used to purchase for a recurring subscription such as Microsoft 365.
The balance will work for things like apps, games, movies, and certain in a purchases from Microsoft store however for Microsoft 365 payment method for ongoing billings it can be charged to a credit card debit card or PayPal so even if you have enough balance to cover a month the system won’t allow it because subscription needs a renewable payment source.