Thank you for voting on this suggestion. It is now completed and can be done via custom Azure Policy. Here is a sample custom policy to apply a specific tag at the RG and have them inherited by the Resources in that RG: https://github.com/Azure/azure-policy/tree/master/samples/ResourceGroup/copy-resourcegroup-tag
Tag inheritance for existing resources is something that we plan to add support for in 2019.Mike Chen commented
The way to do this is through resource policy: https://docs.microsoft.com/en-us/azure/azure-resource-manager/resource-manager-policy-tags. With policy, you can even choose what tags to "inherit"
We’ll definitely do thisMike Chen supported this idea ·Mike Chen shared this idea ·