PlannedBudgetLimits Cloudformation Example

While working with an enterprise finance department to establish planned budget alarms in their multi-account environment, I reached for Cloudformation to help me avoid manually entering 1200 monthly budgets.

The AWS documentation for planned budgets is fine, but the lack of an example and some explicit call-outs caused me to spin wheels while trying to find examples that would explain the error messages I kept getting.

It's my hope the following sample will prove helpful to anyone else trying to do the same:

Resources:

  # If you're managing multiple accounts, you'll probably want this resource name
  # to reflect the name of the target account.

  BudgetAccountNameHere:
    Type: "AWS::Budgets::Budget"
    Properties:
      Budget:
        TimeUnit: MONTHLY
        BudgetType: COST
        PlannedBudgetLimits:
          # Unix Timestamp of Start of Month, UTC.
          # You must provide a full 12-month list, starting with the current month.
          "1648771200":
            Amount: 100.00
            Unit: USD
          "1651363200":
            Amount: 100.00
            Unit: USD
          "1654041600":
            Amount: 100.00
            Unit: USD
          "1656633600":
            Amount: 100.00
            Unit: USD
          "1659312000":
            Amount: 100.00
            Unit: USD
          "1661990400":
            Amount: 100.00
            Unit: USD
          "1664582400":
            Amount: 100.00
            Unit: USD
          "1667260800":
            Amount: 100.00
            Unit: USD
          "1669852800":
            Amount: 100.00
            Unit: USD
          "1672531200":
            Amount: 100.00
            Unit: USD
          "1675209600":
            Amount: 100.00
            Unit: USD
          "1677628800":
            Amount: 100.00
            Unit: USD
        CostFilters:
          LinkedAccount:
            - YOUR_ACCOUNT_ID_HERE
      NotificationsWithSubscribers:
        - Notification:
            NotificationType: ACTUAL
            ComparisonOperator: GREATER_THAN
            Threshold: 99
          Subscribers:
            - SubscriptionType: EMAIL
              Address: YOUR_EMAIL_HERE