The concept of investment appraisal — common mistakes

In evaluation questions, always balance your analysis. After discussing the results of a quantitative technique (e.g., Payback or ARR), you must consider the qualitative factors that could influence the final decision. A top-level answer will conclude with a justified recommendation that weighs both the financial data and the non-financial strategic implications. For instance, state that 'although Project X has a superior ARR, its negative environmental impact may lead to long-term reputational damage, making Project Y the more prudent choice despite its lower financial return'.

No, they are different and this is a crucial distinction. Accounting profit is calculated based on accrual principles and includes non-cash items like depreciation. Investment appraisal focuses on actual cash inflows and outflows because cash is what is needed to fund the project and what is ultimately returned to the business. A project can appear profitable on paper but fail if it does not generate sufficient cash.

Not necessarily. While a quick payback is desirable as it reduces risk and improves liquidity, the Payback Period method has a major flaw: it ignores all cash flows that occur after the payback point. A project with a quick payback might be less profitable overall than an alternative that pays back more slowly but generates substantial returns for many years after. Qualitative factors must also be considered.

The initial cost is a real, one-off cash outflow that occurs at the start of the project (Time 0). It is the investment. Depreciation, however, is an accounting concept used to spread the cost of an asset over its useful life for calculating profit and tax. It is not an actual cash movement. Including both the full initial cost and annual depreciation would result in 'double-counting' the asset's cost, which would distort the appraisal.