Access control for Cloud Billing APIs

Google Cloud offers Identity and Access Management (IAM), which lets you give more granular access to specific Google Cloud resources and prevents unwanted access to other resources. IAM lets you adopt the security principle of least privilege, so you grant only the necessary access to your resources.

IAM lets you control who (users) has what access (roles) to which resources by setting IAM policies. IAM policies grant specific roles to a user giving the user certain permissions.

This page explains the Identity and Access Management roles that are available for the Cloud Billing APIs. For example, you can use IAM to grant roles such as Admin, User, and Project Manager for a Cloud Billing account. For a detailed description of IAM and its features, see the Identity and Access Management developer's guide. In particular, see its Granting, Changing, and Revoking Access section.

Permissions and Roles

For a user to view Cloud Billing account details in the Google Cloud Console, or for a Cloud Billing API method to return Cloud Billing account information, the user or caller must have the necessary permissions. The following tables list the IAM permissions and roles needed for each of the Cloud Billing APIs.

Required permissions for the Cloud Billing Account API

The following table lists the permissions that the caller must have to call each Cloud Billing Account API method:

API Method Required Permissions IAM Role that grants permission
billingAccounts.create When creating a Cloud Billing subaccount, the caller must have billing.accounts.update on the subaccount's master Cloud Billing account. Billing Admin
billingAccounts.get billing.accounts.get on a Cloud Billing account. Billing Admin or Billing Viewer
billingAccounts.list None. This method returns all accounts that the caller has permission to access. Billing Admin, Billing Viewer, Billing User, or Billing Project Manager
billingAccounts.getIamPolicy billing.accounts.getIamPolicy on a Cloud Billing account. Billing Admin or Billing Viewer
billingAccounts.setIamPolicy billing.accounts.setIamPolicy on a Cloud Billing account. Billing Admin
billingAccounts.testIamPermissions None. This method is used to determine the permissions that a caller has on a Cloud Billing account. n/a
billingAccounts.patch billing.accounts.update on a Cloud Billing account. Billing Admin
billingAccounts.projects.list billing.resourceAssociations.list on a Cloud Billing account. Billing Admin or Billing Viewer
projects.getBillingInfo resourcemanager.projects.get on the project.
For more information, see Access Control for Projects.		 Project Viewer
projects.updateBillingInfo billing.resourceAssociations.create AND resourcemanager.projects.createBillingAssignment on the Cloud Billing account. Billing Admin or Billing User, AND Project Billing Manager

Required permissions for the Cloud Billing Budget API

The following table outlines which permissions are necessary to call each Cloud Billing Budget API method. Also included are the standard IAM Billing roles that automatically grant those permissions.

API Method Required Permission IAM Role that grants permission
GetBudget To get the details of a budget, the caller must have the billing.budgets.get permission on the budget's Cloud Billing account. Billing Admin or Billing Viewer
ListBudgets To return a list of budgets applied to a Cloud Billing account, the caller must have the billing.budgets.list permission on the Cloud Billing account. Billing Admin or Billing Viewer
CreateBudget To create a new budget, the caller must have the billing.budgets.create permission on the budget's Cloud Billing account. Billing Admin
UpdateBudget To update an existing budget, the caller must have the billing.budgets.update permission on the budget's Cloud Billing account. Billing Admin
DeleteBudget To delete an existing budget, the caller must have the billing.budgets.delete permission on the budget's Cloud Billing account. Billing Admin

Required permissions for the Cloud Billing Catalog API

Authorization is not required when using the Cloud Billing Catalog API (Services list, and SKUs list) because all of the data returned by the calls is public.

Roles

You don't directly give users permissions; instead, you grant them roles, which have one or more permissions bundled within them.

You can grant one or more roles on the same resource.

The following table lists the standard IAM Billing roles that you can grant to access the Cloud Billing APIs, the description of what the role does, and the permissions bundled within that role.

Role Title Description Permissions Lowest resource
roles/billing.admin Billing Account Administrator Provides access to see and manage all aspects of billing accounts.
  • billing.accounts.close
  • billing.accounts.get
  • billing.accounts.getIamPolicy
  • billing.accounts.getPaymentInfo
  • billing.accounts.getPricing
  • billing.accounts.getSpendingInformation
  • billing.accounts.getUsageExportSpec
  • billing.accounts.list
  • billing.accounts.move
  • billing.accounts.redeemPromotion
  • billing.accounts.removeFromOrganization
  • billing.accounts.reopen
  • billing.accounts.setIamPolicy
  • billing.accounts.update
  • billing.accounts.updatePaymentInfo
  • billing.accounts.updateUsageExportSpec
  • billing.budgets.*
  • billing.credits.*
  • billing.resourceAssociations.*
  • billing.subscriptions.*
  • cloudnotifications.*
  • commerceoffercatalog.*
  • consumerprocurement.accounts.*
  • consumerprocurement.orders.*
  • dataprocessing.datasources.get
  • dataprocessing.datasources.list
  • dataprocessing.groupcontrols.get
  • dataprocessing.groupcontrols.list
  • logging.logEntries.list
  • logging.logServiceIndexes.*
  • logging.logServices.*
  • logging.logs.list
  • logging.privateLogEntries.*
  • recommender.commitmentUtilizationInsights.*
  • recommender.usageCommitmentRecommendations.*
  • resourcemanager.projects.createBillingAssignment
  • resourcemanager.projects.deleteBillingAssignment
 Billing Account
roles/billing.costsManager Billing Account Costs Manager Can view and export cost information of billing accounts.
  • billing.accounts.get
  • billing.accounts.getIamPolicy
  • billing.accounts.getSpendingInformation
  • billing.accounts.getUsageExportSpec
  • billing.accounts.list
  • billing.accounts.updateUsageExportSpec
  • billing.budgets.*
  • billing.resourceAssociations.list
roles/billing.creator Billing Account Creator Provides access to create billing accounts.
  • billing.accounts.create
  • resourcemanager.organizations.get
 Organization
roles/billing.projectManager Project Billing Manager Provides access to assign a project's billing account or disable its billing.
  • resourcemanager.projects.createBillingAssignment
  • resourcemanager.projects.deleteBillingAssignment
 Project
roles/billing.user Billing Account User Provides access to associate projects with billing accounts.
  • billing.accounts.get
  • billing.accounts.getIamPolicy
  • billing.accounts.list
  • billing.accounts.redeemPromotion
  • billing.credits.*
  • billing.resourceAssociations.create
 Billing Account
roles/billing.viewer Billing Account Viewer View billing account cost information and transactions.
  • billing.accounts.get
  • billing.accounts.getIamPolicy
  • billing.accounts.getPaymentInfo
  • billing.accounts.getPricing
  • billing.accounts.getSpendingInformation
  • billing.accounts.getUsageExportSpec
  • billing.accounts.list
  • billing.budgets.get
  • billing.budgets.list
  • billing.credits.*
  • billing.resourceAssociations.list
  • billing.subscriptions.get
  • billing.subscriptions.list
  • commerceoffercatalog.*
  • consumerprocurement.accounts.get
  • consumerprocurement.accounts.list
  • consumerprocurement.orders.get
  • consumerprocurement.orders.list
  • dataprocessing.datasources.get
  • dataprocessing.datasources.list
  • dataprocessing.groupcontrols.get
  • dataprocessing.groupcontrols.list
  • recommender.commitmentUtilizationInsights.get
  • recommender.commitmentUtilizationInsights.list
  • recommender.usageCommitmentRecommendations.get
  • recommender.usageCommitmentRecommendations.list
 Billing Account

Note that the roles roles/billing.projectManager and roles/billing.admin include permissions for other Google Cloud services as well.