Question

You apply a tag named CostCenter with the value Finance to a resource group named RG-Finance that contains several virtual machines and storage accounts. A colleague later runs a cost report grouped by the CostCenter tag and notices that the individual VMs and storage accounts do not appear under the Finance grouping. What is the reason for this behavior?

Accepted Answer

Tags applied to a resource group are not automatically inherited by the resources within it.

Answer

Cost reports only display tags that are applied at the subscription scope, not the resource group scope.

Answer

The CostCenter tag name is reserved by Azure and cannot be used for cost grouping.

Answer

Tags take up to 30 days to propagate from a resource group to its child resources.