The Sunk Cost Fallacy: How It Affects Your Decisions

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what is a sunk cost

In her spare time, she enjoys reading business journals and watching NFL games. After the second month of work, the contractor finds a problem with the foundation, and tells the homeowner he will need to increase the original price by another $30,000. The homeowner now faces the dilemma of walking away from the job and losing the $25,000 he’s already spent, or spend the extra $30,000—on top of the remaining $75,000—to complete the job. While closing the chapter on the situation—despite how much you’ve spent—may conjure feelings of fear or nervousness, doing so actually opens you up to new situations that will serve you better. Access and download collection of free Templates to help power your productivity and performance.

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  1. These are the factors that should influence your decision rather than any previously sunk costs.
  2. Access and download collection of free Templates to help power your productivity and performance.
  3. The sunk cost fallacy arises when decision-making takes into account sunk costs.
  4. Do you keep working and finish the construction, hoping that the market will soon improve?
  5. If, for example, XYZ Clothing is considering shutting down a production facility, any of the sunk costs that have end dates should be included in the decision.

It’s a lot easier to how much can you claim for funeral expense deductions avoid the sunk cost fallacy in financial modeling, as DCF models only look at future cash flows, and don’t give any consideration to the past. Yes, any salary that has been paid to an employee is a sunk cost. As long as those wages are not recoverable, that salary represents an expense that has been incurred and can not be captured back by the company. After trading for Joey Gallo, the New York Yankees outfielder struck out 194 times over 140 games. Instead of continuing to stick with their decision that didn’t pan out as they’d hoped, the Yankees traded Gallo in August 2022. Businesses that continue a course of action because of the time or money already committed to an earlier decision risk falling into the sunk cost trap.

The former framing type is positive and the latter is negative. Christine is a member of the HBX Course Delivery Team, focusing on Financial Accounting and Disruptive Strategy. In Accounting from Northeastern University, and an MBA from Northeastern University.

what is a sunk cost

What is a Sunk Cost?

The $50 you spent would be a sunk cost but would not factor into whether or not you buy theater tickets in the future. In general, businesses pay more attention to fixed and sunk costs than people, as both types of costs impact profits. The sunk cost fallacy is a cognitive bias that makes you feel as if you should continue pouring money, time, or effort into a situation since you’ve already “sunk” so much into it already. This perceived sunk cost makes it difficult to walk away from the situation since you don’t want to see your resources wasted. Sunk costs are important because may act as distractors in decision-making.

What ought to matter instead are expectations of future costs and future returns once the factory is operational. Sunk cost, in economics and finance, a cost that has already been incurred and that cannot be recovered. In economic decision making, sunk costs are treated as bygone and are not taken into consideration when deciding whether to continue an investment project.

Is the Sunk Cost Dilemma Common in Business Decisions?

what is a sunk cost

However, a framing effect places unequal biases towards preferences that are otherwise equal. The sunk cost fallacy can easily be overcome with mindfulness, dedicate, and thoughtful planning. The sunk cost fallacy is deeply rooted in biological tendencies, as researchers from the University of California San Diego analyzed the sunk cost effect in humans as well as pigeons. The construction of the Sydney Opera House began in the 1950s with an initial budget of 7 million Australian pounds. However, as the project progressed, it encountered numerous design and engineering challenges that led to cost overruns and delays.

But how does a sunk cost relate to a situation in the future when you haven’t spent the money yet? When you sign up, you’ll probably be under a contract to lock in your monthly rate. Most of these companies require a minimum time for you to stay with the service, mainly to keep you from jumping ship to a competitor who may offer you a better deal later on. If you move or decide to cancel your service before your contract is up, you may have to pay out the rest of your contract.

Unsurprisingly, recognizing that a feature or product is no longer achieving its objectives after investing considerable time, energy, and resources can be challenging. A sunk cost fallacy is often simplified to the idea of throwing good money after bad while refusing to cut one’s losses. In the following examples, you can clearly see how sunk costs affect decision-making. A majority of people would choose the more expensive trip because, although it may not be more fun, the loss seems greater. The sunk cost fallacy prevents you from realizing what the best choice is and makes you place greater emphasis on the loss of unrecoverable money. If a sunk cost can be eliminated at some point, it becomes a relevant cost and should be a part of business decisions about future events.

Sunk Cost Dilemma

When making business decisions, organizations should only consider relevant costs, which include future costs—such as decisions about inventory purchase costs or product pricing—that still need to be incurred. Sunk costs are excluded from future business decisions because the cost will remain the same regardless of the outcome of a decision. Emotional attachment in the context of the sunk cost dilemma refers to the emotional investment people or organizations make in a project or decision due to the resources already committed.

The contractor does a walk-through with the owner, discusses the project requirements, and quotes a total what is supply chain finance scf guide construction price of $100,000 to complete the job. Both parties agree, and the homeowner puts down 25%, or $25,000. The most common type of framing effect was theorised in Kahneman & Tversky, 1979 in the form of valence framing effects.[39] This form of framing signifies types of framing. The first type can be considered positive where the ‘sure thing’ option highlights the positivity whereas if it is negative, the ‘sure thing’ option highlights the negativity, while both being analytically identical. For example, saving 200 people from a sinking ship of 600 is equivalent to letting 400 people drown.

The expression “Don’t send good money chasing after bad money” is a caution against this type of mistake. Sunk costs can influence decision-making by creating emotional attachment and the desire to recoup past investments, leading people to make decisions that are not in their best interest. Overcoming the sunk cost dilemma can be challenging, but it’s crucial for making rational and effective decisions. Sunk costs don’t necessarily need to be financial, though in business, it usually is. For example, how you spent your morning is a sunk cost and could, for the most part, have no bearing on how you spend the rest of your day. What ends up happening is that you may stay in a stagnant situation that’s unfulfilling and lose additional valuable resources, such as emotional energy, your time (which is finite), or money.

Upgrading to a paid membership gives you access to our extensive collection of plug-and-play Templates designed to power your performance—as well as CFI’s full course catalog and accredited Certification Programs. Sunk cost is also known as past cost, embedded cost, prior year cost, stranded cost, sunk capital, or retrospective cost. In this example, the architecture fees are an example of a sunk cost. It contacts an architect to design a new space who drafts some preliminary drawings for a fee. Then, an economy slowdown occurs, and the company is now unsure whether it should continue with the new warehouse.

Unfortunately, these are all sunk costs, so if your end goal is your own happiness, you might need to cut your losses and refocus your energies elsewhere. The last major component of the sunk cost dilemma is opportunity cost. Opportunity cost is the concept of what you give up by choosing one option over another. When dealing with the sunk cost dilemma, people often neglect opportunity cost, which can have a significant impact on decision-making. Persisting with a project, even when it’s evident that the likelihood of success is low, because of the emotional attachment to past efforts is a downfall of the sunk cost dilemma.

On a psychological level though, you might believe if you don’t go you won’t get your money’s worth. But if you go and don’t like it, you’ve not only wasted the cost of the ticket but a few hours of your time. You’ve compounded the financial loss with an opportunity loss.In a strict economic sense, a rational person ignores sunk costs and only considers variable costs when making a decision. To do otherwise would prevent one from making a decision purely on its merits. However, this approach is in conflict with the irrational human tendency to avert loss under any circumstances. In business speak, a sunk cost is a payment or investment that has already been made.

A real-world historical example of the sunk cost dilemma can be found in the construction of the Sydney Opera House in Australia. For example, if you decide halfway through installing new hardwood flooring in your house that you hate the way it looks, you have a sunk cost. The Sunk Cost Dilemma is a formal economic term that describes the emotional difficulty of deciding whether to proceed with or abandon a project when time and money have already been spent, but the desired results have not been achieved. According to the National Institutes of Health (NIH), this leads to irrational, emotion-based decision making, causing you to spend additional resources on a dead end instead of walking away from the situation that’s no longer serving you. The framing effect which underlies the sunk cost effect builds upon the concept of extensionality where the outcome is the same regardless of how the information is framed. This is in contradiction to the concept of intentionality, which is concerned with whether the presentation of information changes the situation in question.


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