The billing of a DB system starts at the end of the Creating state, and is billed during the Active, Updating, and Deleting state.

Stopping a DB system stops billing for all shapes associated with it. However, billing continues for storage (See Backup Billing). Billing for shapes resumes if you restart the DB system.

If you delete a DB system, the billing stops at the end of the Deleting state. You are not billed when the DB system is in the Inactive, Deleted, or Failed state.