Case 4-27 How do you find the new annual cost of the decision in order to compare it
Jules Dupuit, a French engineer and economist, introduced the concepts behind CBA in the 1840s. It became popular in the 1950s as a simple way of weighing up project costs and benefits, to determine whether to go ahead with a project.
As its name suggests, Cost-Benefit Analysis involves adding up the benefits of a course of action, and then comparing these with the costs associated with it.
The results of the analysis are often expressed as a payback period – this is the time it takes for benefits to repay costs. Many people who use it look for payback in less than a specific period – for example, three years.
You can use the technique in a wide variety of situations. For example, when you are:
However, bear in mind that it is best for making quick and simple financial decisions. More robust approaches are commonly used for more complex, business-critical or high cost decisions.
Step One: Brainstorm Costs and Benefits
First, take time to brainstorm all of the costs associated with the project, and make a list of these. Then, do the same for all of the benefits of the project. Can you think of any unexpected costs? And are there benefits that you may not initially have anticipated?
When you come up with the costs and benefits, think about the lifetime of the project. What are the costs and benefits likely to be over time?
Step Two: Assign a Monetary Value to the Costs
Costs include the costs of physical resources needed, as well as the cost of the human effort involved in all phases of a project. Costs are often relatively easy to estimate (compared with revenues).
It's important that you think about as many related costs as you can. For example, what will any training cost? Will there be a decrease in productivity while people are learning a new system or technology, and how much will this cost?
Remember to think about costs that will continue to be incurred once the project is finished. For example, consider whether you will need additional staff, if your team will need ongoing training, or if you'll have increased overheads.
Step Three: Assign a Monetary Value to the Benefits
This step is less straightforward than step two! Firstly, it's often very difficult to predict revenues accurately, especially for new products. Secondly, along with the financial benefits that you anticipate, there are often intangible, or soft, benefits that are important outcomes of the project.
For instance, what is the impact on the environment, employee satisfaction, or health and safety? What is the monetary value of that impact?
As an example, is preserving an ancient monument worth $500,000, or is it worth $5,000,000 because of its historical importance? Or, what is the value of stress-free travel to work in the morning? Here, it's important to consult with other stakeholders and decide how you'll value these intangible items.
Step Four: Compare Costs and Benefits
Finally, compare the value of your costs to the value of your benefits, and use this analysis to decide your course of action.
To do this, calculate your total costs and your total benefits, and compare the two values to determine whether your benefits outweigh your costs. At this stage it's important to consider the payback time, to find out how long it will take for you to reach the break even point – the point in time at which the benefits have just repaid the costs.
For simple examples, where the same benefits are received each period, you can calculate the payback period by dividing the projected total cost of the project by the projected total revenues:
Total cost / total revenue (or benefits) = length of time (payback period).
Case 4-27 How do you find the new annual cost of the decision in order to compare it
How accurate do you think an "order of magnitude" cost estimate should be? Can you compare and contrast a business case for a software project with a business case for replacing windows in a house where energy savings are being used as the reason for replacement? in your opinion. Please not copy and paste from google.
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