I have had some EC2 instances running for many months but recently I started using AWS Cost Explorer. The instances already had tags on them i.e. "Env", "AppName". After I activated these tags in the Cost Allocation Tags section I still dont see them in the Cost Explorer filters. How long does it take for them to show up in the cost explorer filters or am I doing something wrong? I know for linked accounts it takes up to 7 days but this is not a linked account it is the actual account with my instances in it.
According to the AWS documentation on Using Cost Allocation Tags:
All tags can take up to 24 hours to appear in the Billing and Cost Management console.