Billing Account is an account when you open a project under GCP. Google or GCP partners will charge you according to your billing account. You can use the Google Cloud Platform Console to manage your GCP billing account. From the console, you can update account settings such as payment methods and administrative contacts. Or you can use the console to set budgets and alerts, view your payment history, and to export billing data. Only the account owner, Billing Administrator and Project Owner, have the authority to move your Billing Account to GCP partners’.