@Shriniwas Kalamkar - Welcome to Microsoft Q&A and thanks for reaching out.
Essentially, you need to select a scope where you can apply a budget and that contains the subscriptions. So, you can use a management group, enrollment account, billing account, billing profile, invoice section, etc. The following example is for the management group, but you’d use similar steps for other billing scopes.
For management groups:
- Budgets for management groups can only be created if all of the subscriptions in the management group use the same billing currency.
- In the Azure portal, navigate to Cost Management + Billing, and then select Cost Management in the left navigation menu.
- Change the scope to the management group that contains the subscriptions. You might need to drill into different levels of management groups.
- After you’ve selected the management group scope that contains the subscriptions, in the left navigation menu, select Budgets.
- Create a new budget for the management group. You should see a preview of the actual cost while you’re creating the budget.
- Navigate to Cost analysis.
- In the Budget list, select the budget you just created.
- In the Group by list, select Subscription.
- The Cost analysis view should show a breakdown of all your subscription costs in actual costs and a projection of costs compared to your budget.
Using the steps above, here’s an example where I created a budget of $40K/mo. Based on the forecast projection, the budget will be exceeded around March 22. If you mouse hover over the timeline, you’ll see how much cumulatively was charged for a particular date. In this example, I hovered over March 3.
For more information, please take a look at this document: tutorial-acm-create-budgets
Hope this helps.
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