SingaporeAccountingSyllabus dot point

How do the appraisal methods compare, and what non-financial factors and limitations shape an investment decision?

Compare the investment appraisal methods and evaluate a decision considering qualitative factors and limitations

A focused answer to the H2 Principles of Accounting outcome on evaluating investment decisions. Comparing payback, ARR, NPV and IRR, the role of estimates and the cost of capital, qualitative factors, and the limits of appraisal.

Generated by Claude Opus 4.810 min answerUpdated 2026-06-06

Reviewed by: AI editorial process; not yet individually human-reviewed

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What this dot point is asking
The answer
Examples in context
Try this

What this dot point is asking

SEAB wants you to compare the investment appraisal methods and to evaluate a decision, weighing qualitative factors and the limitations of appraisal. This is the synthesis dot point for the module: it moves beyond calculating a single figure to judging which method to trust and what the numbers leave out. The central insight is that the methods can disagree, each has strengths and weaknesses, and a sound decision combines the financial appraisal with risk, judgement and non-financial considerations.

The answer

Comparing the four methods

Method	Basis	Time value?	Key strength	Key weakness
Payback	Cash flows	No	Simple; liquidity and risk focus	Ignores post-payback flows and timing's value
Accounting rate of return	Profit	No	Uses familiar profit; simple	Profit-based; ignores time value; policy-dependent
Net present value	Cash flows	Yes	Uses all flows; measures value added	Needs a cost of capital; absolute, not relative
Internal rate of return	Cash flows	Yes	A clear percentage break-even rate	Can mislead with unconventional cash flows

NPV is generally regarded as the best because it uses all cash flows and accounts for timing, but the methods are complementary: payback flags liquidity and risk, the ARR offers a familiar profit yardstick, and the IRR expresses the result as a financing ceiling.

When methods disagree

A common exam scenario has one project winning on payback and another on NPV. The resolution depends on the firm's priorities: a cash-constrained or risk-averse business may favour the faster payback, while a firm focused on value and able to wait will follow NPV. The skilled answer states the trade-off and recommends clearly, justified by the circumstances.

Qualitative factors

Numbers are not the whole story. Before committing, a business should weigh:

People - effects on staff (jobs, morale) and customers (service, quality).
Strategy - fit with long-term goals and competitive position.
Ethics and environment - reputation, sustainability and legal compliance.
Risk - the reliability of the estimates and the firm's capacity to bear a loss.

The limitations of appraisal

All methods share fundamental limits: they rely on estimated future cash flows and profits, the future is uncertain (distant figures are least reliable), and the cost of capital is itself an estimate to which NPV and IRR are sensitive. Appraisal informs the decision; it does not make it certain.

Worked example

A company evaluates a single project: cost $\$ 250,000 $; payback$ 3.5 $years; ARR$ 18% $(target$ 15% $); NPV$ +\ $12\,000$ at a $10\%$ cost of capital; IRR about $11.5\%$ . The market is volatile. Reach a reasoned recommendation.

Step 1: Read each method

Payback of $3.5$ years is moderate. The ARR of $18\%$ beats the $15\%$ target. The NPV is positive ( $+\$ 12,000 $), so by the soundest measure the project adds value. The IRR of$ 11.5% $is only just above the$ 10%$ cost of capital.

Step 2: Note the thin margins

The positive NPV is small and the IRR is close to the cost of capital, so the project only just clears the hurdle. A modest fall in cash flows, or a rise in the cost of capital above $11.5\%$ , would make it unattractive.

Step 3: Weigh risk and qualitative factors

The volatile market raises the chance that the optimistic estimates are not met. Liquidity, staff and strategic-fit considerations should be checked. Sensitivity analysis on the cash flows and discount rate would be wise.

Step 4: Recommend

On the figures the project is marginally acceptable (positive NPV, ARR above target, IRR above the cost of capital), so it could proceed, but the thin margins and market volatility mean the recommendation should be conditional on testing the estimates and confirming the firm can absorb a shortfall. A good answer commits to a view while acknowledging the risk.

Examples in context

Example 1. Liquidity wins over value. A small firm with tight cash faces two projects: one with the higher NPV but a five-year payback, another with a lower NPV but a two-year payback. Despite NPV theory favouring the first, the firm chooses the faster payback because it cannot afford to tie up cash for five years in an uncertain market. The decision rightly lets the firm's liquidity constraint override the headline NPV.

Example 2. A strategically vital, low-NPV project. A company appraises an environmental-compliance upgrade with a slightly negative NPV. Purely financially it should be rejected, but failing to comply risks fines and reputational damage, and the upgrade aligns with the firm's sustainability strategy. The qualitative factors justify proceeding despite the numbers, showing why appraisal informs but does not dictate the final decision.

Try this

Q1. State which appraisal method is generally regarded as the most reliable and why. [2 marks]

Cue. Net present value, because it uses all the project's cash flows and accounts for the time value of money, measuring the value added.

Q2. Give two non-financial factors a firm should consider before investing. [2 marks]

Cue. Effect on staff and customers (jobs, morale, service), and strategic fit including ethical, environmental and reputational considerations.

Q3. Explain why a marginal positive NPV should be treated with caution. [3 marks]

Cue. The NPV depends on estimated cash flows and an uncertain cost of capital; a small error in either could turn the NPV negative, so a thin margin signals the decision is sensitive and warrants sensitivity analysis.

Exam-style practice questions

Practice questions written in the style of SEAB exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.

Original8 marksTwo projects each cost

\

100\,000

. Project A: payback

years, NPV

15\,000

. Project B: payback

3

years, NPV

+\

25\,000$. The company has limited funds and faces an uncertain market. Advise which project to choose, weighing the methods and other factors.

Show worked answer →

The two methods point in different directions, so judgement is needed.

By payback, Project A is better ( $2$ years versus $3$ ), recovering cash faster, which matters given the uncertain market and limited funds (lower risk and earlier liquidity).

By NPV, Project B is better ( $+\$ 25,000 $versus$ +\ $15\,000$ ), adding more value because it accounts for all cash flows and their timing. NPV is the theoretically superior measure of profitability.

Weighing them: if the priority is maximising value and the firm can bear the longer wait, choose B for its higher NPV. If liquidity and risk dominate, given the uncertain market and tight funds, A's faster payback may be preferred despite the lower NPV. A reasoned answer states the trade-off and a clear recommendation tied to the company's circumstances.

Other factors: reliability of the cash-flow estimates, the accuracy of the cost of capital, the effect on staff and customers, and strategic fit.

Markers reward recognising A wins on payback and B on NPV, explaining the risk-versus-value trade-off, a justified recommendation, and at least one qualitative factor.

Original6 marksExplain three limitations common to investment appraisal methods and two non-financial factors a business should consider before investing.

Show worked answer →

Three limitations:

Reliance on estimates. All methods use forecast cash flows, profits and a cost of capital that may prove wrong; the appraisal is only as good as its inputs.
Uncertainty of the future. The further ahead the cash flows, the less reliable they are; conditions, demand and costs can change unexpectedly.
Difficulty estimating the cost of capital (or target rate). A small change in the discount rate can flip an NPV from positive to negative, so the result is sensitive to an uncertain figure.

Two non-financial factors:

Impact on staff and customers, such as effects on jobs, morale or service quality.
Strategic fit and reputation, including environmental and ethical considerations and alignment with long-term goals.

Markers reward three genuine limitations (estimates, future uncertainty, discount-rate sensitivity) and two valid non-financial factors (people, strategy/ethics/environment).