I have covered how to do Cost Budget in AWS, I thought I can also do one for Azure of how to have a budget in Azure with Cost Budget.

Step by Step – How to create a Cost Budget in Azure

First login to your azure portal, and click on Cost Management and Billing in the menu.

CostManagementBillingAzure

Cost Management Billing Azure

Then click on the Cost Management.
CostManagement

Cost Management

Once inside the section, click on Budgets
BudgetsAzure

Budgets Azure

Once in Budget, click on Add and fill out the section with a name, the end date and the amount of budget
BudgetDetailsAzure

Budget Details Azure

Then click on next will bring you to your Alert section, fill out the percentage that you want to alert on, I have filled out 90% and also the email to notify on
SetBudgetAlertsAzure

Set Budget Alerts Azure

Click on Create and you will now have a budget for spending on Azure
BudgetAzureSummary

Budget Azure Summary

Summary

I hope this helped, there is also Action Groups that you can use to delete VM or other functionality when a certain limit has been reached, that can be done on the Alert page.