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Capital budgeting methods; most reliable

Short answer

Capital budgeting is the process of evaluating long-term investments with large, irreversible commitments. Methods include payback, ARR, NPV, IRR, and PI; discounting methods like NPV are preferred. NPV is most reliable because it uses all cash flows, considers time value of money, and directly measures wealth increase.

Define capital budgeting and explain its importance. What are the methodologies of evaluating projects financially and which method is most reliable?

Capital budgeting and its importance

Capital budgeting is the process of planning, evaluating and selecting long-term investment projects whose benefits come over several years (such as a new plant, road or building), by comparing the cash outlay with the expected future returns.

  1. Large funds are committed for a long period.
  2. Decisions are irreversible; a wrong decision may cause heavy loss.
  3. It decides the future growth and profit of the firm.
  4. It affects the firm's risk and its cost of capital.
  5. Funds are limited, so projects have to be ranked.
  6. It needs a long-term forecast of demand, cost and technology.

Methods of evaluating projects financially

MethodRule
Payback periodAccept if payback is less than the standard period
Accounting rate of return (ARR)Accept if ARR is more than the required rate
Net present value (NPV)Accept if NPV > 0
Internal rate of return (IRR)Accept if IRR > required rate (MARR)
Profitability index (PI)Accept if PI > 1
Benefit-cost ratioAccept if B/C > 1
  • Payback period: time to recover the initial investment; simple, but ignores the time value of money and cash flows after payback.
  • ARR: average profit / average investment; ignores the time value.
  • NPV: present value of inflows less outflows at the required rate.
  • IRR: the discount rate that makes NPV zero.
  • PI: PV of inflows / initial investment.
  • B/C ratio: PV of benefits / PV of costs.

Most reliable method

The NPV method is the most reliable. It uses all cash flows over the project life, considers the time value of money, directly measures the increase in the firm's wealth, and avoids the multiple-IRR and ranking problems. IRR and PI are also good, but they can give wrong ranking for mutually exclusive projects of different size or cash-flow pattern.

✓ Answer checked by Claude Opus 5.5 (high effort)

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