Opportunity cost or economic opportunity loss is the value of the next best alternative forgone as the result of making a decision. Opportunity cost analysis is an important part of a company's decision-making processes but is not treated as an actual cost in any financial statement. The next best thing that a person can engage in is referred to as the opportunity cost of doing the best thing and ignoring the next best thing to be done.
Opportunity cost is a key concept in economics because it implies the choice between desirable, yet mutually exclusive results. It is a calculating factor used in mixed markets which favour social change in favour of purely individualistic economics. It has been described as expressing "the basic relationship between scarcity and choice." The notion of opportunity cost plays a crucial part in ensuring that scarce resources are used efficiently. Thus, opportunity costs are not restricted to monetary or financial costs: the real cost of output forgone, lost time, swag, pleasure or any other benefit that provides utility should also be considered opportunity costs.
The concept of an opportunity cost was first developed by John Stuart Mill.
A person who invests $10,000 in a stock denies herself or himself the interest that could have accrued by leaving the $10,000 in a bank account instead. The opportunity cost of the decision to invest in stock is the value of the interest.
A person who sells stock for $10,000 denies himself or herself the opportunity to sell the stock for a higher price in the future, inheriting an opportunity cost equal to future price minus sale price.
An organization that invests $1 million in acquiring a new asset instead of spending that money on maintaining its existing asset portfolio incurs the increased risk of failure of its existing assets. The opportunity cost of the decision to acquire a new asset is the financial security that comes from the organization's spending the money on maintaining its existing asset portfolio.
If a city decides to build a hospital on vacant land it owns, the opportunity cost is the value of the benefits forgone of the next best thing that might have been done with the land and construction funds instead. In building the hospital, the city has forgone the opportunity to build a sports center on that land, or a parking lot, or the ability to sell the land to reduce the city's debt, since those uses tend to be mutually exclusive. Also included in the opportunity cost would be what investments or purchases the private sector would have voluntarily made if it had not been taxed to build the hospital. The total opportunity costs of such an action can never be known with certainty, and are sometimes called "hidden costs" or "hidden losses" as what has been prevented from being produced cannot be seen or known. Even the possibility of inaction is a lost opportunity. In this example, to preserve the scenery as-is for neighboring areas, perhaps including areas that it itself owns.
Opportunity cost is assessed in not only monetary or material terms, but also in terms of anything which is of value. For example, a person who desires to watch each of two television programs being broadcast simultaneously, and does not have the means to make a recording of one, can watch only one of the desired programs. Therefore, the opportunity cost of watching Dallas could be enjoying Dynasty. In a restaurant situation, the opportunity cost of eating steak could be trying the salmon. For the diner, the opportunity cost of ordering both meals could be twofold - the extra $20 to buy the second meal, and his reputation with his peers, as he may be thought gluttonous or extravagant for ordering two meals. A family might decide to use a short period of vacation time to visit Disneyland rather than doing household improvements. The opportunity cost of having happy children could therefore be a remodelled bathroom
The consideration of opportunity costs is one of the key differences between the concepts of economic cost and accounting cost. Assessing opportunity costs is fundamental to assessing the true cost of any course of action. In the case where there is no explicit accounting or monetary cost (price) attached to a course of action, or the explicit accounting or monetory cost is low, then, ignoring opportunity costs may produce the illusion that its benefits cost nothing at all. The unseen opportunity costs then become the implicit hidden costs of that course of action.
Note that opportunity cost is not the sum of the available alternatives when those alternatives are, in turn, mutually exclusive to each other. The opportunity cost of the city's decision to build the hospital on its vacant land is the loss of the land for a sporting center, or the inability to use the land for a parking lot, or the money which could have been made from selling the land, as use for any one of those purposes would preclude the possibility to implement any of the others.
However, most opportunities are difficult to compare. Opportunity cost has been seen as the foundation of the marginal theory of value as well as the theory of time and money.
In some cases it may be possible to have more of everything by making different choices; for instance, when an economy is within its production possibility frontier. In microeconomic models this is unusual, because individuals are assumed to maximise utility, but it is a feature of Keynesian macroeconomics. In these circumstances opportunity cost is a less useful concept.
The first step to making good decisions is to think about the trade-offs involved. This primer explains how measuring opportunity cost can help you find the trade-off that lurks within every decision.
Let's begin by analyzing a typical decision carefully, just as a coach might videotape a tennis player's stroke and then study it frame by frame.
Suppose that Jim is about to purchase a CD of his favorite singer. Let's see what goes on in his mind as he makes his decision.
Jim first looks at the songs and thinks about the hours of pleasure he would get listening to them. In economic terms, he determines the benefit he expects to get from the CD. Next, he glances at the price tag to see how much it costs -- $15. Jim determines that the CD's benefit exceeds its cost, so he decides to buy it.
To make his decision, Jim followed a simple rule: Do something if its benefit outweighs its cost. To see if Jim's rule is a good one, let's try it out on another problem. Suppose a woman is walking along down the street when she sees a dime on the sidewalk. Should she pick it up?
Yes, you may be thinking. If she picks up the dime, she gets a benefit of 10 cents. On the other hand, it doesn't cost her anything to pick it up. The benefit clearly outweighs the cost.
But what if the woman is Madonna, and she's hurrying to a recording studio where a symphony orchestra is waiting to perform with her. Do you still think she should stop and pick up the dime?
It's clearly not worth her time. Perhaps Jim's rule needs to be modified, say to this: Do something if its benefit outweighs its cost unless you're a famous singer. Or a movie star, or President of the United States, or a brain surgeon.
But there's a simpler way. We can greatly improve Jim's decision-making rule by adding just one word. Here's the rule for deciding whether it's in your own best interest to do something:
Do something if its benefit outweighs its opportunity cost.
When asked how much something costs, people usually answer by giving its price, or money cost. Economists usually measure cost differently, using what they call opportunity cost, defined as the value of the next best alternative opportunity that is given up in order to do something.
Here's how to calculate it. When considering a choice, ask yourself three questions:
1. What alternative opportunities are there?
2. Which is the best of these alternative opportunities?
3. What would I gain if I selected my best alternative opportunity instead of the choice I'm considering?
The answer to the third question is the opportunity cost of the choice.
To find out the opportunity cost to Madonna of picking up the dime, we need to come up with her alternative opportunities and select the best one. Let's assume that Madonna's best alternative to picking up the dime would be to leave it on the sidewalk and arrive at the recording studio 30 seconds sooner.
The value of those 30 extra seconds at the recording studio is the opportunity cost to her of picking up the dime. She should compare the benefit she'd get from picking up the dime (10 cents) with its opportunity cost (arriving 30 seconds sooner at the recording studio) to decide what to do.
When we compare the opportunity cost of picking up the dime with the benefit, we can see that it doesn't make sense for Madonna to retrieve it. Her time would be better spent at the recording studio. Perhaps a child─whose time isn't worth as much─will come along later and decide to pick up the dime.
Opportunity cost and trade-offs
Let's have Jim decide again whether to buy the CD, this time using opportunity cost instead of money cost. As before, he should first consider the benefit he'd get from the CD, and look at its price tag. But before making a decision, Jim should consider alternative opportunities -- other things that he could do with the $15. Suppose his best alternative is to buy a pair of $15 sunglasses. The value to him of the sunglasses represents the opportunity cost of the CD.
As he decides whether to buy the CD, he should compare its benefit with its opportunity cost -- the sunglasses. If the benefit (the value to Jim of the CD) outweighs the opportunity cost (the value to Jim of the sunglasses), then he should buy the CD. If the benefit is less than the opportunity cost, then he shouldn't buy it.
In other words, thinking about the opportunity cost of buying a CD expresses the problem as a choice between the CD and the sunglasses. This is precisely why opportunity cost is such a powerful decision-making tool. It shows a decision for what it really is -- a trade-off between your two best alternatives.
As another example, consider a government proposal to build a new dam. Here's how a poor decision-maker might view the problem:
"If we build a dam, we'll have better flood control and cheaper electricity. If we don't, then we'll experience occasional flooding, and electricity will be more expensive."
Here the choice seems to be between having a dam and not having a dam. When put that way, it's tempting to choose to build the dam. Cheaper electricity and flood control are better than expensive electricity and floods.
Here's another way of presenting the problem:
"If we build the dam, it will provide us with flood control and cheaper electricity, but it will cost us $100 million."
This decision-maker recognizes that something must be given up to build a dam. There's a trade-off. This is better, but still not the best way to view a decision. When we think of the cost in dollars, the trade-off we're facing is often unclear. It's hard for most people to imagine how much $100 million is, and we don't know whether the money could be put to better use elsewhere.
Here's how an economist would view the problem:
"If we build the dam, we'll have flood control and cheaper electricity. But the $100 million to build the dam could be used instead to build two new high schools."
Here, the benefit of the dam is compared with its opportunity cost: new high schools. Expressed that way, the cost of the dam becomes much more concrete. Besides, it's not really money that we're sacrificing when we build a dam, but rather resources -- workers, machines, cement, and land -- that could be used elsewhere. If money were the only thing we sacrificed, there would be no trade-offs; our government could buy us everything we wanted simply by printing more money, preferably in very large denominations.
Using opportunity cost -- an example
Ernesto is trying to decide whether to attend college and has determined the money cost of attending college for one year.
Money Cost of a Year of College
Books and school supplies: 2,000
Room and board: 10,000
Miscellaneous expenses: 3,000
Total money cost: $17,000
This tells Ernesto how much money he'll need to come up with if he decides to go to college.
But in order to decide whether to go to college, Ernesto should figure out its opportunity cost. The first step is for Ernesto to determine the best alternative to going to college. Let's say that it's working full time at the local Drive-In. The opportunity cost of going to college, then, is the value of what he would gain if he worked instead of going to college.
If Ernesto worked, he wouldn’t have to pay for tuition, books, or school supplies. He also would earn $10,000 during the year that she worked. The opportunity cost of a year of college, therefore, is:
Opportunity Cost of a Year of College
Tuition: $ 1,000
Books and school supplies: 2,000
Foregone wages from working: 10,000
Total opportunity cost: $13,000
This tells Ernesto how much he'd have to spend on other things if he decided not to go to college.
You may be wondering why we didn't include room and board, transportation, entertainment, and miscellaneous expenses in the opportunity cost calculation. Wouldn't Ernesto have these expenses at college?
Yes, he would, but he also would face these costs if he decided to work. Remember, opportunity cost includes only the value of what one would gain under the next best alternative opportunity. Ernesto can't get out of paying for room and board, transportation, and entertainment by working. These expenses, therefore, should not be included in the opportunity cost of going to college.
The opportunity cost of going to college -- $13,000 -- tells Ernesto what he would gain if he chose not to go to college. When deciding whether to go to college, he should weigh that cost against the benefits of college, like higher future earnings, new friends, and a better understanding of our world.
Just as Eskimos have lots of words to describe snow, economists have lots of words to describe cost. This section introduces sunk costs.
Sunk costs are costs that must be paid whether or not you do something. They're of special interest to us because we don't want to include them when calculating opportunity cost. Unfortunately, sunk costs are like invasive weeds; it's often hard to yank them out of a problem.
To see why sunk costs should be ignored, let's go back to Sheila, who has had her car for a week now. She has just returned home from school and she's trying to decide whether to go out and see a movie.
To figure out the opportunity cost of seeing a movie, Sheila first determines her best alternative opportunity. Let's assume that it's to stay home and do homework. Next, she lists all the things that she would gain if she stayed home and did homework instead of watching a movie.
Opportunity Cost of Going to a Movie
Time to do homework: 3 hours
Gas and parking: $1.50
Admission to the theater: $2.00
Opportunity Cost: 3 hours and $3.50
Notice that Sheila correctly includes gas and parking in her opportunity cost calculations. But what about all the other costs associated with owning a car, like insurance and registration fees? Shouldn't she include them as part of the opportunity cost of going to a movie?
The answer is no. If Sheila stayed home, she'd still have to pay the same insurance and registration fees. She can't reduce these costs by staying home.
Insurance and registration fees are examples of sunk costs. Sunk costs can't be recovered by choosing the best alternative opportunity. That's why economists use the following rule when calculating the opportunity cost of something:
Ignore sunk costs.
Now suppose that Sheila decides to go to the movie and her little brother asks to come along. He will pay for his own admission. What is the opportunity cost to Sheila of bringing him?
The answer is nothing at all. Since Sheila has already decided to go to the movie theater, the expense of driving there has become a sunk cost -- she will incur that expense whether or not her brother comes. She doesn't sacrifice anything by bringing him along, unless, of course, he's obnoxious.
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