Hi there
After you have your Tags in place in your Azure Subscription you are able to check Costs based on the predefined TAGs such as cost center (CC0100, CC0200, etc), environment (Prod, Dev, UAT, Training, etc.) or any other TAG you might need to define based on your Business need.
Need help managing and creating tags? Check here
Go to your Azure Portal
Or use this link to access the proper blade on your Azure Portal
https://portal.azure.com/#blade/Microsoft_Azure_CostManagement/Menu/costanalysis




Are you new to Azure? Please check How to create your free First LAB on Azure
Thanks,