1. Key Cost Concepts in Decision Making
a. Sunk Cost
A sunk cost is a past expense that cannot be recovered and should not influence future decisions. Examples:
Money spent on a failed marketing campaign
Equipment purchased that is now obsolete
Research and development costs for a discontinued product
Relevance: Sunk costs are excluded from decision-making because they do not affect future cash flows.
b. Opportunity Cost
Opportunity cost is the value of the next best alternative foregone when a decision is made. Examples:
Choosing to invest in Project A instead of Project B
Using warehouse space for storage instead of rental income
Allocating labor to one product line over another
Relevance: Opportunity costs help managers evaluate trade-offs and make optimal resource allocation decisions.
c. Accounting Cost
Accounting cost refers to actual expenses recorded in financial statements. Examples:
Salaries and wages
Rent and utilities
Raw material purchases
Relevance: Accounting costs are used for budgeting, financial reporting, and performance evaluation.
2. Managerial Relevance of Cost Concepts
Understanding these costs helps managers:
Avoid irrational decisions based on sunk costs
Evaluate alternatives using opportunity costs
Use accounting costs for budgeting and control
Example: A manager deciding whether to continue a product line must ignore sunk costs, consider the opportunity cost of using resources elsewhere, and analyze accounting costs to determine profitability.
3. Fixed vs. Variable Costs
a. Fixed Costs
Fixed costs remain constant regardless of production volume. Examples:
Rent
Salaries of permanent staff
Insurance premiums
b. Variable Costs
Variable costs change with production volume. Examples:
Raw materials
Direct labor
Packaging costs
Importance of Classification: Correct classification helps managers:
Forecast costs accurately
Conduct break-even analysis
Make pricing and production decisions
✅ 15-Question Quiz
Topic: Accounting Tools and Measures for Decision Making
1. What is a sunk cost? A. A future expense B. A recoverable cost C. A past cost that cannot be changed D. A variable cost Answer: C
2. Which of the following is an example of a sunk cost? A. Future rent payments B. Money spent on obsolete equipment C. Raw material purchases D. Employee bonuses Answer: B
3. What is opportunity cost? A. The cost of missed opportunities B. The cost of past decisions C. The cost recorded in financial statements D. The cost of fixed assets Answer: A
4. Which of the following best illustrates opportunity cost? A. Paying for utilities B. Choosing one investment over another C. Recording depreciation D. Paying employee salaries Answer: B
5. What is an accounting cost? A. A theoretical cost B. A cost not recorded C. A cost recorded in financial statements D. A cost of missed opportunities Answer: C
6. Which of the following is NOT an accounting cost? A. Rent B. Salaries C. Opportunity cost D. Utilities Answer: C
7. Why should managers ignore sunk costs in decision making? A. They are future costs B. They affect future cash flows C. They cannot be recovered D. They are variable costs Answer: C
8. How does opportunity cost affect managerial decisions? A. It helps evaluate past expenses B. It identifies trade-offs between alternatives C. It records financial transactions D. It increases fixed costs Answer: B
9. Which cost is most relevant for budgeting and financial reporting? A. Sunk cost B. Opportunity cost C. Accounting cost D. Implicit cost Answer: C
10. What is a fixed cost? A. A cost that varies with production B. A cost that remains constant regardless of output C. A cost that is unpredictable D. A cost that depends on sales Answer: B
11. Which of the following is a fixed cost? A. Raw materials B. Packaging C. Rent D. Direct labor Answer: C
12. What is a variable cost? A. A cost that remains unchanged B. A cost that changes with production volume C. A cost that is fixed annually D. A cost that is unrelated to output Answer: B
13. Which of the following is a variable cost? A. Insurance premiums B. Salaries of permanent staff C. Raw materials D. Office rent Answer: C
14. Why is it important to classify costs correctly? A. To confuse stakeholders B. To increase expenses C. To inform pricing and production decisions D. To reduce transparency Answer: C
15. How can cost classification help in break-even analysis? A. By ignoring fixed costs B. By identifying total costs and contribution margin C. By eliminating variable costs D. By focusing only on sunk costs Answer: B