1. Login to Azure Portal using Azure account - https://portal.azure.com/
2. Click on the subscriptions in the Hub Menu
3. You will have all the subscriptions available for the logged in account.
4. Click on the subscription for which you need to view the bill
5. Click on Manage; this will open a new window. https://ea.azure.com/report/usagesummary
6. In this window you can see the complete billing info and you can download the report as well.