Sunk Costs | Accounting for Managers (2024)

Learning Outcomes

  • Recognize sunk costs

There is a piece of machinery sitting in your warehouse. No matter what product your company decides to make, that piece of machinery is worthless. It is old, broken and outdated. But your supervisor comes to you and says “but it cost $50,000.” So what? No matter what decision you come to, that $50k is gone! We call that a sunk cost.

From a personal financial standpoint, here are some examples of sunk cost to help make the concept make more sense in the following video.

Sunk costs are those costs that happened and there is not one thing we can do about it. These costs are never relevant in our decision making process because they already happened.

These costs are never a differential cost, meaning, they are always irrelevant. Let’s look at an example:

Hupana Running Company bought a machine for $50,000 that was used to make water bottles. The water bottle line never really took off, so Hupana decided to discontinue the line, and focus their efforts on the running shoes that were the profitable portion of the business. Even though, in hindsight, they should have never added a line of water bottles to their product line, the $50,000 they spent on the machine is a sunk cost.

It would be senseless for Hupana to keep making the water bottles to try to recoup the already spent $50,000, but they could try to sell the machine to another company who already makes water bottles. No matter what they do with the machine, the 50K is a sunk cost, not to be recovered, and irrelevant to any decisions the company makes now. So we need to just let it go.

Practice Questions

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Sunk Costs | Accounting for Managers (2024)

FAQs

What are sunk costs in managerial accounting? ›

Sunk costs are those which have already been incurred and which are unrecoverable. In business, sunk costs are typically not included in consideration when making future decisions, as they are seen as irrelevant to current and future budgetary concerns.

Why do sunk costs matter a lot for corporate managers? ›

In practice, however, sunk costs can and do significantly influence decisions about the future. This is largely because it's psychologically challenging to let go of previously invested time, effort, or financial resources even if the outcome of those investments fails to meet expectations.

How are sunk costs treated in managerial decision-making? ›

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.

What is the sunk cost bias in management? ›

The sunk cost fallacy is associated with commitment bias, where we continue to support our past decisions despite new evidence suggesting that it isn't the best course of action. We fail to consider that whatever time, effort, or money we have already expended will not be recovered.

What is a sunk cost quizlet? ›

Sunk Costs. is a cost that has already been incurred and cannot be recovered. Prospective Costs. are costs that may be incurred or changed if an action is taken.

What are two reasons that cause us to fall victim to sunk costs? ›

Loss aversion and emotional attachment to prior investments are two psychological factors that play a role in the sunk cost fallacy, causing individuals to continue investing resources into something due to an irrational attachment.

Why are sunk costs not relevant? ›

Sunk costs are those costs that happened and there is not one thing we can do about it. These costs are never relevant in our decision making process because they already happened. These costs are never a differential cost, meaning, they are always irrelevant.

How should sunk costs be considered in business decision-making and why? ›

Sunk costs, by definition, are part of the past and are not considered in decision-making since they have already occurred and cannot be recovered through future sales. However, all business expenses can be reviewed and decreased, including upcoming sunk costs.

Are sunk costs ever relevant in decision-making? ›

A sunk cost is not a relevant cost for decision making. Whether a cost is relevant or irrelevant depends on the decision at hand. A cost may be relevant to one decision and that same cost may be irrelevant to another decision. A sunk cost, however, is always an irrelevant cost.

Why it can be difficult to ignore sunk costs when making a decision? ›

Answer and Explanation: Sunk costs are difficult to ignore since some if not all decision-makers believe that sunk costs are still relevant in the decision-making process even though sunk costs are considered as irrelevant when making investment decisions.

How do sunk costs affect output decisions? ›

Sunk costs often influence people's decisions, with people believing that investments (i.e., sunk costs) justify further expenditures. People demonstrate "a greater tendency to continue an endeavor once an investment in money, effort, or time has been made".

Which of the following should be ignored when making decisions sunk costs? ›

Sunk costs should be ignored in making decisions because they have no influence on future costs and benefits.

How is sunk cost a fallacy? ›

Individuals commit the sunk cost fallacy when they continue a behavior or endeavor as a result of previously invested resources (time, money or effort) (Arkes & Blumer, 1985). This fallacy, which is related to loss aversion and status quo bias, can also be viewed as bias resulting from an ongoing commitment.

Which of the following best describes a sunk cost? ›

Sunk cost are defined as the cost that has been incurred in the past and cannot be recovered in the present or future. These costs are not considered while making future decisions for the business project. These costs are independent of the future events of the business.

What is difference between sunk cost and relevant cost? ›

1. Sunk costs (past costs) or committed costs are not relevant. Sunk, or past, costs are monies already spent or money that is already contracted to be spent. A decision on whether or not a new endeavour is started will have no effect on this cash flow, so sunk costs cannot be relevant.

What is sunk cost and other costs? ›

In economics and business decision-making, a sunk cost (also known as retrospective cost) is a cost that has already been incurred and cannot be recovered. Sunk costs are contrasted with prospective costs, which are future costs that may be avoided if action is taken.

Are sunk costs fixed costs? ›

In accounting, finance, and economics, all sunk costs are fixed costs. However, not all fixed costs are considered to be sunk. The defining characteristic of sunk costs is that they cannot be recovered.

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