Return on Capital (ROC)

Expressed as a percentage (%).

Why this ratio matters

This ratio matters because it shows how well the return earned on the owner's invested capital compares with alternatives such as keeping the money in a bank or investing it elsewhere. Owners use it to judge whether the business is worth continuing or needs improvement, while potential investors compare it against other investment returns before deciding to invest. Creditors also consider this ratio, because a weak return on capital can affect the business's ability to generate cash to repay long-term debts in the future.

Worked calculation

Perniagaan Maju Jaya recorded net profit of RM20,000 with capital of RM100,000.

= RM20,000 ÷ RM100,000 × 100

= 20%

Interpretation for Paper 2

• For every RM100 of capital, the business generates RM20 of net profit.
• It can be compared with savings interest rates. If the return is lower, the capital might be better kept in the bank.
• This ratio can be compared from year to year to see whether the efficiency of using the owner's capital is improving or declining.
• Return on capital can also be compared with other businesses in the same industry to assess whether the business's performance is on par with competitors.
• A high and consistent return can encourage the owner to inject more capital into the business or to maintain the existing investment.

How to improve this ratio

• Increasing sales through more effective marketing strategies to generate more net profit without significantly increasing capital.
• Controlling operating expenses such as rent, salaries and utilities more efficiently so that more gross profit is retained as net profit.
• Using the invested capital more productively, for example by investing in assets that generate a higher return instead of leaving capital under-utilised.

Common student mistakes

• Students often mistakenly use the gross profit figure instead of net profit when calculating return on capital, even though the formula requires net profit after all expenses have been deducted.
• Many students forget to multiply the quotient by 100, stating the answer as a decimal (e.g. 0.2) instead of a percentage (20%).
• Some students use only the closing capital figure without calculating average capital (i.e. the sum of opening and closing capital divided by 2), even when both figures are given in the question.

Limitations

• Capital changes during the year; use average capital where available.
• It does not distinguish the risk between different businesses.
• This ratio does not take into account the owner's personal effort and time invested in the business, which also help to generate profit.
• The net profit figure can be affected by different accounting policies, such as the depreciation method or stock valuation, which reduces the accuracy of comparisons between businesses.

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