Cost tracking is a feature of defined tags. To allow users to work with cost tracking, use the same IAM policy for working with tag namespaces and tags.
Suppose you have a defined tag key definition called Finance.CostCenter. You enable this tag key definition for cost tracking. You apply the tag with a value of "W1" (Finance.CostCenter="W1") to some resources, and you apply the tag with a value of "C2" (Finance.CostCenter="C2") to other resources.
Limits on Cost-Tracking Tags 🔗
Describes the limits on cost-tacking tags.
You can have a maximum of 10 tag key definitions enabled for cost-tracking in your tenancy at a time. For example, you could enable the Project tag key as a cost-tracking tag and have 75 different departments, but it only takes up 1 tag.
Using the Console 🔗
You can enable cost-tracking when you create a tag key definition, or you can update an existing tag key definition to enable cost tracking. For more information on creating and updating tag key definition, see Creating a Tag Key Definition and Updating a Tag Key Definition.