Go to the AWS Management Console and open the Billing and Cost Management console at Amazon Web Services home page.
In the navigation pane, choose Budgets.
At the top of the page, choose Create budget.
For Select budget type, choose Reservation budget.
Choose Set your budget.
For Name, enter the name of your budget.
For Period, choose how often you want the budget to reset the actual and forecasted spend. Choose Daily for every day, Monthly for every month, Quarterly for every three months, or Annually for every year.
All budget times are in UTC.
For Reservation budget type, choose whether you want the budget to track RI Utilization or RI Coverage.
For Service, choose the service whose instances you want the budget to track.
For Utilization threshold, enter the utilization or coverage percentage that you want AWS to notify you at. For example, for a utilization budget where you want to stay above 80% RI utilization, enter 80, and the budget notifies you when you go below 80% utilization. For a coverage budget where you want to make sure that you stay above 80%, enter 80, and the budget notifies you when your instance coverage goes below 80%.
(Optional) Under Budget parameters (optional), for Filtering, choose one or more of the available filters. Your choice of budget type determines the set of filters that is displayed on the console.
Choose Configure alert. You can configure only one alert for a reservation budget.
(Optional) Under Configure alert, for Email contacts, enter the email addresses that you want the notifications to be sent to and then choose Add email contact. Separate multiple email addresses with a comma. A notification can have up to 10 email addresses.
To receive a notification, you must specify an email address, You can also specify an Amazon SNS topic.
(Optional) For SNS topic ARN, select Notify via Amazon Simple Notification Service (SNS) topic and then choose Verify. If you want to use an Amazon SNS topic for your notification but don’t have one, see Create a Topic in the Amazon Simple Notification Service Developer Guide.