So basically, earned value management (EVM) is to actually help calculate the variance between a set budget/ cost and the limit in which work (tasks or activities) have to be performed and completed in the actual project.
Budget at Completion: BAC or budget at completion cost is the total of all budgets established for the work you will perform on the project. It indicates how much was initially planned for the project to cost. There isn’t a unique formula. BAC concerns looking at the actual total budget cost of the project and what value was gained or lost.
Planned Value: It is the complete work value of the project that you have previously planned out according to your time and budget (cost) that should be completed in due time. Your work activities should respect your project plan. This method is calculated before you attack any project’s activity. This is what is used in the budget that you have completely measured, and nothing else. Nothing out of budget and cost comes in to play yet.
So here is how to calculate it:
You take the planned percentage of the work you completed in the project and multiply it by the project budget (cost), and you will get your Planned Value.
Its formula: Planned Value = (Planned Percent (%) Complete) X (BAC)
Actual Cost: It is the actual cost, total amount of money you have spent since each member of the team has started and performed their activities in the project. It concerns the actual cost from the beginning of each activity performed on the project during a set period of time (a specified date).
There is no specific way to calculate Actual Cost. It is the complete amount that you have spent until now on the project.
Earned Value: Take the confirmed percentage of the completed work on the project and multiply it by the project budget, and you will get the Earned Value.
Earned Value = percentage (%) of completed work on the project X BAC (Budget at Completion).
Here is an example of the calculation:
You have an actual project to complete in 14 months. You set a budget of $100,000 for the project. Suddenly, six months have gone by, and you used $60,000 out of that budget. Upon inspection, you realize that you have completed only 40% of the work.
So how would the Earned Value (EV) of the project be calculated?
Your Earned Value is 40% of the value of your total project work
You’ve completed a 40% value of BAC known as Budget at completion
Therefore, you will calculate
= 40% of 100,000
= 0.4 X 100,000
= 40,000 USD
In the end, your project’s complete Earned Value (EV) is $40,000. And this all thanks to EVM, which gave you an overview of your schedule, costs, and value to completely measure your project performance.