What is Sunk Cost?

  • Calender12 Feb 2026
  • user By: BlinkX Research Team
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  • Sunk costs are expenses that have already been incurred and cannot be recovered. In simple terms, these are costs that a business or individual has already spent, regardless of whether the outcome is successful or not. Since these costs are incurred in the past, they should ideally not influence future financial or strategic decisions. Sunk costs usually occur when money, time, or resources are invested in a project, product, or activity that does not deliver the expected results. This article explains what is sunk cost meaning, common sunk cost examples, different types of sunk costs, and the key factors. 

    Examples of Sunk Costs 

    After we define sunk cost, let’s look at some common situations where sunk cost examples arise across the industry: 

    Research and Development (R&D) 

    Businesses commonly spend substantial resources to create new products through new equipment and cutting-edge technology. The organisation loses its research and development expenses after the product fails to meet market requirements.  

    Marketing Expenses 

    Companies allocate their funds to advertising initiatives which serve two purposes: they create brand recognition, and they help businesses connect with potential customers. Certain marketing initiatives fail to deliver anticipated customer interaction and financial returns. 

    Non-Refundable Deposits 

    Payments made for bookings, reservations, or contracts that cannot be recovered if plans change are clear examples of sunk costs. These costs are common and used by many businesses and individuals today. 

    Developing Software 

    Investment in developing, creating or designing a digital product may become a sunk (i.e., lost) expense for the company due to the decision not to launch or use it. With more users migrating to online-based systems, these expenses are likely to grow tremendously, therefore highlighting the need to develop systems that are flexible and can expand as needed. 

    Abandoned Projects 

    Projects often stop or fall behind because of changes in the markets, lack of funds or changes in strategy. This means a company will have a sunk cost associated with the abandoned project. 

    Machinery and Equipment 

    Another source of sunk costs is money spent on machinery and equipment that either becomes out-of-date, damaged, or unnecessary. The speed at which our technology has changed over the past few years has resulted in more frequent upgrades and an increased likelihood of sunk costs. 

    Types of Sunk Costs 

    The following are the types of sunk costs: 

    • Fixed Sunk Costs: Fixed sunk costs are unavoidable costs. They are not tied to any level of production or output. Examples of fixed sunk costs are lease payments and salaries of permanent staff. 
    • Time & Effort: Time dedicated to projects or activities that can’t be recovered, even if the project is abandoned. 
    • Emotional Investment: Energy and commitment in personal or professional relationships that may no longer serve any value. 
    • Depreciation & Amortisation: The above accounting practices will spread out the asset's cost over time, but once recorded, they are considered sunk costs. 

    What Factors Lead to the Sunk Cost Fallacy in Decision-Making 

    The following are the factors leading to the sunk cost fallacy in decision-making. 

    • Emotional Attachment: When there is a personal or emotional investment in a specific project then it can cause irrational decision-making. 
    • Desire to Avoid Loss: The fear of loss may cause someone to continue doing something that they are failing at. 
    • Assigning Blame: If the losses are to be attributed to some efforts or investments made, one is likely to blame individuals or teams, and thus fear is what will stop unprofitable projects. 
    • Positive vs Negative Framing: Businesses tend to present loss avoidance in a positive light, whereas acknowledging failure is seen as negative, influencing decision-making. 
    • Attachment to Original Plans: Adhering to a strategy for no other reason than being the original plan is irresponsible; following the original decision outweighs the weight of the decision. 
    • Optimistic Bias: It is the tendency to believe that higher costs of yesterday will call for even more returns tomorrow, where evidence negates this expectation, and "overly optimistic expectations are set." 
    • Waste Avoidance: Despite best efforts to avoid waste, results may not always follow, and sometimes even due diligence may not provide the expected outcome. 

    How to Avoid Sunk Cost Issues? 

    To avoid Sunk cost issues: 

    1.  Focus on Future Costs and Benefits 

    Always evaluate decisions based on potential future returns instead of past investments. This approach helps businesses get the most from available resources and allows them to make decisions that match long-term plans. 

    2. Set Clear Decision-Making Criteria 

    Define performance benchmarks, financial targets, and timelines before starting a project. A clear and reliable evaluation system enables timely decisions and creates a complete solution for tracking progress. 

    3. Conduct Regular Performance Reviews 

    Companies need to conduct frequent reviews which help them detect problems in their operations and make necessary changes for their business needs. The process of regular monitoring provides multiple advantages which help maintain project success while achieving business objectives.  

    4. Encourage Objective Decision-Making 

    Data-driven decisions which use financial forecasts and market analysis usually produce better results. Emotional ties to earlier financial commitments result in decreased business flexibility, which prevents future expansion. 

    5. Accept Losses as Part of Business 

    Losses are a natural part of business and investment journeys. Keep in mind that recognising mistakes often creates a clear improvement in future planning and helps organisations grow with demand. 

    6. Seek External Opinions 

    Consulting financial advisors or industry experts provides new perspectives and helps businesses access insights that may not be visible internally. This often leads to improved and balanced decision-making. 

    7. Avoid Over-Commitment to Original Plans 

    Markets keep changing, and businesses must remain flexible. Sticking to original plans may increase losses. Instead, adapting strategies help organisations stay ready for the future and make operations smoother and easier to manage. 

    Conclusion 

    Sunk costs play a significant role in not only personal finances but also in business finance, in the decision-making process. It is important to note here that sunk costs are sunk. So, decision-making has to be rational and not based on the previous expenditure but on the outcome in the future. The awareness of types of sunk costs and sunk cost implications as well as the psychological sunk cost factors can help avoid sunk cost fallacy in both personal and business life. Additionally, you can use an online trading app to stay updated about the market trends.  

    FAQs on What is Sunk Cost

    Can the sunk cost be recovered if the producer makes wise decisions?

    How do you know if an expense is a sunk cost?

    Can sunk costs be fixed?

    What are the limitations of sunk costs?

    Why should sunk costs be ignored in decision-making?