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# Cost Allocation Tags

**Introduction**

* Can be used to generate detailed costing reports
* Types:
  * AWS Generated Cost Allocation Tags
    * Automatically applied to the resource you create
    * Starts with Prefix: **aws:** (Ex. aws:createdBy)
    * not applied to resources created before the activation
  * User tags
    * Defined by user
    * Starts with Prefix: **user:**
  * Cost Allocation Tags just appear in the **Billing Console**
  * Set up of Cost Allocation Tags take up to 24 hours to show up in the report