Understanding NPV and IRR in Investment Analysis

Apr 25, 2024

Lecture Notes on Net Present Value (NPV) and Internal Rate of Return (IRR)

Summary

In this lecture, the concepts of Net Present Value (NPV) and Internal Rate of Return (IRR) were explored as methods for investment analysis. These financial metrics are crucial for assessing the viability and value creation potential of projects based on the time value of money principle.


Net Present Value (NPV)

  • Definition: NPV is a financial metric that calculates the value today of all future cash flows from a project, discounted back to their present value.
  • Purpose: To determine whether a project adds value to the company. A positive NPV means the project is worth investing in.

Steps for Calculating NPV

  1. Initial Investment: For Project A, the investment was $1000 at year 0.
  2. Future Benefits:
    • $400 each year for four years.
  3. Discount Rate: Used the Weighted Average Cost of Capital (WACC) of 20%.
  4. Present Value Calculation:
    • Year 1: $400 / 1.2 = $333
    • Year 2: $400 / (1.2)^2 = $278
    • Year 3: $400 / (1.2)^3 = $231
    • Year 4: $400 / (1.2)^4 = $193
  5. Sum of Present Values: Summing up all discounted cash flows and subtracting the initial investment ($333 + $278 + $231 + $193 - $1000 = $35).
  6. Result: The NPV of Project A is $35, indicating a value-creating project since NPV is positive.

Internal Rate of Return (IRR)

  • Definition: IRR is the discount rate that makes the NPV of all cash flows from a project equal to zero.
  • Purpose: To find the break-even rate of return from an investment.

Calculating IRR

  • Approach: Using formula or trial and error (Excel can be used for complex calculations).
  • Example: For Project A, the IRR is found to be 22%

Comparison with WACC

  • WACC: 20%
  • IRR: 22% (higher than WACC implies the investment is worthwhile)

Evaluation of Multiple Projects

  • Project A: NPV = $35, IRR = 22%
  • Project B: NPV = $117, IRR = 27%
  • Project C: NPV = -$46, IRR = 18%

Decision Making

  • With only $1000 to invest, choose the project with the highest NPV and IRR.
  • Most Attractive Project: Project B (early high returns, high IRR, high NPV)
  • Least Attractive Project: Project C (negative NPV, low IRR compared to WACC)

In conclusion, applying NPV and IRR methods helps prioritize projects in terms of financial viability and the potential to add value to the company.