Return on Investment and Capital Employed Explained

Return on Investment sounds like a very big business term, but the idea is simple.

It asks one clean question:

How well has the business used the long-term funds placed inside it?

In Class 12 Accountancy, Return on Investment and Return on Capital Employed usually point to the same ratio. You may see it written as ROI, ROCE, Return on Investment, or Return on Capital Employed. The name may change, but the heart of the calculation remains the same.

Once you understand what goes into the numerator and what goes into the denominator, this ratio becomes one of the most logical parts of ratio analysis.

The Big Idea Behind ROI

Every business needs funds to operate.

Some funds come from owners. Some funds may come from long-term lenders, such as debenture holders or banks. Together, these long-term funds are used to buy assets, run operations, and generate profit.

ROI checks whether those long-term funds are being used efficiently.

Think of capital employed like water stored in a reservoir. Profit is the useful output produced from that reservoir. ROI tells you how strong the output is compared with the amount of water stored.

If two businesses earn the same profit, the business that used less capital to earn that profit has used its funds more efficiently.

Formula of Return on Investment

The formula is:

Formula	Meaning
Return on Investment = Profit Before Interest and Tax / Capital Employed x 100	Measures return earned on long-term funds used in the business

It is written as a percentage.

ROI = PBIT / Capital Employed x 100

PBIT means Profit Before Interest and Tax. It is also called EBIT in many questions.

Capital employed means the long-term funds used in the business.

Why PBIT Is Used Instead of Final Profit

This is the part where many students make mistakes.

ROI studies the return earned by the business on the total long-term capital employed. That capital may include both:

• shareholders’ funds
• long-term borrowed funds

If long-term borrowed funds are included in capital employed, interest should not be deducted before judging the return on that capital. Interest is the cost or return related to borrowed funds. So, for ROI, we look at profit before interest.

Tax is also added back because the standard formula uses profit before interest and tax.

That is why the numerator is PBIT, not profit after tax.

If the question gives	To calculate PBIT
Profit before interest and tax	Use it directly
Profit before tax	Add interest
Profit after tax	Add tax and interest
Net profit after interest but before tax	Add interest

What Is Capital Employed?

Capital employed means the long-term funds employed in the business.

The common formula is:

Capital Employed = Shareholders' Funds + Long-term Borrowings

Shareholders’ funds may include:

• equity share capital
• preference share capital
• reserves and surplus
• credit balance of Statement of Profit and Loss, if given

Long-term borrowings may include:

• debentures
• long-term loans
• bonds
• other non-current borrowings

Current liabilities are not included when you calculate capital employed through the long-term funds method.

Alternative Ways to Calculate Capital Employed

Sometimes the question gives assets and liabilities instead of funds. In that case, capital employed can also be calculated as net assets.

Method	Formula
Funds method	Shareholders’ Funds + Long-term Borrowings
Net assets method	Total Assets - Current Liabilities
Asset structure method	Non-current Assets + Working Capital

Working capital means:

Working Capital = Current Assets - Current Liabilities

So another way to write capital employed is:

Capital Employed = Non-current Assets + Working Capital

All these methods should give the same answer when the balance sheet information is complete and correctly arranged.

Solved Example of ROI

Let us take a simple question.

A company gives the following information:

Particulars	Amount
Equity share capital	Rs. 5,00,000
Reserves and surplus	Rs. 2,00,000
10% debentures	Rs. 3,00,000
Profit after tax	Rs. 1,20,000
Tax	Rs. 40,000
Debenture interest	Rs. 30,000

Calculate Return on Investment.

Step 1: Calculate PBIT

Profit after tax is already after tax and after interest. So both must be added back.

PBIT = Profit after tax + Tax + Interest
PBIT = Rs. 1,20,000 + Rs. 40,000 + Rs. 30,000
PBIT = Rs. 1,90,000

Step 2: Calculate Capital Employed

Capital Employed = Shareholders' Funds + Long-term Borrowings
Capital Employed = Equity Share Capital + Reserves and Surplus + Debentures
Capital Employed = Rs. 5,00,000 + Rs. 2,00,000 + Rs. 3,00,000
Capital Employed = Rs. 10,00,000

Step 3: Apply the Formula

ROI = PBIT / Capital Employed x 100
ROI = Rs. 1,90,000 / Rs. 10,00,000 x 100
ROI = 19%

So, the company earns a return of 19% on the capital employed in the business.

Example Using Assets and Current Liabilities

Now suppose the question gives this information:

Particulars	Amount
Non-current assets	Rs. 8,00,000
Current assets	Rs. 3,00,000
Current liabilities	Rs. 1,00,000
Profit before interest and tax	Rs. 2,00,000

First calculate working capital.

Working Capital = Current Assets - Current Liabilities
Working Capital = Rs. 3,00,000 - Rs. 1,00,000
Working Capital = Rs. 2,00,000

Now calculate capital employed.

Capital Employed = Non-current Assets + Working Capital
Capital Employed = Rs. 8,00,000 + Rs. 2,00,000
Capital Employed = Rs. 10,00,000

Now calculate ROI.

ROI = Rs. 2,00,000 / Rs. 10,00,000 x 100
ROI = 20%

This means the business earns Rs. 20 as profit before interest and tax for every Rs. 100 of capital employed.

How to Interpret ROI

ROI is a profitability ratio. But it is not just asking whether the business earned profit. It asks whether the business earned enough profit compared with the funds used.

ROI result	General interpretation
Higher ROI	Better use of capital employed
Lower ROI	Weaker return on long-term funds
Rising ROI over years	Efficiency or profitability may be improving
Falling ROI over years	Funds may not be generating enough profit

A higher ROI is usually a good sign because it suggests that the business is using its long-term funds well.

But do not judge the ratio blindly.

ROI should be compared with:

• ROI of previous years
• ROI of similar businesses
• cost of borrowing
• risk level of the business
• stability of profits

For example, if a company earns ROI of 18% and pays 10% interest on borrowed funds, borrowing may be useful because the business earns more than the cost of debt. But if ROI is only 7% while the debt cost is 10%, using more borrowed funds may hurt the owners’ earnings.

ROI vs Net Profit Ratio

Students sometimes mix ROI with net profit ratio because both are profitability ratios.

They are not the same.

Point	ROI	Net Profit Ratio
Main question	How efficiently is capital employed used?	How much profit is earned from revenue?
Numerator	PBIT	Net profit
Denominator	Capital employed	Revenue from operations
Form	Percentage	Percentage

Net profit ratio connects profit with sales.

ROI connects profit with long-term funds.

This difference is important because a business may have a good net profit ratio but still use a very large amount of capital. ROI helps us see whether that capital is producing a strong return.

ROI vs Return on Shareholders’ Funds

Return on Shareholders’ Funds looks only from the owners’ point of view.

ROI looks at the return on total long-term funds, including owners’ funds and long-term borrowed funds.

Ratio	Profit used	Funds used
ROI	PBIT	Capital employed
Return on Shareholders’ Funds	Profit after tax	Shareholders’ funds

So, if the question is asking about overall efficiency of funds used by the business, use ROI.

If it is asking about the return earned by shareholders, use Return on Shareholders’ Funds.

Common Mistakes in ROI Questions

Using Profit After Tax Directly

Profit after tax is not PBIT.

If profit after tax is given, add back tax and interest.

Including Current Liabilities in Capital Employed

Capital employed focuses on long-term funds. Current liabilities are normally excluded.

If you use the net assets method, current liabilities are deducted from total assets.

Forgetting Debentures

Debentures are long-term borrowed funds. They are included in capital employed.

Treating Total Assets as Capital Employed Without Adjustment

Total assets may include assets financed by current liabilities. That is why the net assets method deducts current liabilities.

Forgetting to Write the Answer as a Percentage

ROI is expressed as a percentage. If your calculation gives 0.19, write it as 19%.

Thinking Higher ROI Is Always Perfect

Higher ROI is generally better, but it must be read with risk, consistency, and borrowing cost.

A very high ROI for one year may come from unusual profit. A steady good ROI is usually more useful than one sudden jump.

Exam Presentation Format

Use this simple order in written answers:

1. Write the formula.
2. Calculate PBIT.
3. Calculate capital employed.
4. Substitute values in the formula.
5. Write the answer as a percentage.
6. Add one interpretation line if asked.

For interpretation, you can write:

If comparison is given, be more specific.

For example:

ROI increased from 15% to 19%, showing better utilisation of capital employed.

Quick Revision Table

Term	Meaning
ROI	Return earned on capital employed
PBIT	Profit before interest and tax
Capital employed	Shareholders’ funds plus long-term borrowings
Working capital	Current assets minus current liabilities
Answer format	Percentage
Main interpretation	Efficiency in using long-term funds

Frequently Asked Questions

Is Return on Investment the same as Return on Capital Employed?

In Class 12 Accountancy ratio analysis, they are usually treated as the same ratio. Both use PBIT divided by capital employed, multiplied by 100.

What is the formula for ROI?

The formula is:

ROI = Profit Before Interest and Tax / Capital Employed x 100

It is written as a percentage.

Why do we use PBIT for ROI?

We use PBIT because capital employed includes long-term funds from both owners and lenders. Interest is related to borrowed funds, so it is added back before judging the return earned by total capital employed.

What is included in capital employed?

Capital employed usually includes shareholders’ funds and long-term borrowings. It may also be calculated as total assets minus current liabilities, or as non-current assets plus working capital.

Are current liabilities included in capital employed?

No, current liabilities are not included when using the funds method. If you use the net assets method, current liabilities are deducted from total assets.

Is a higher ROI always better?

A higher ROI is generally better because it shows stronger use of capital. But it should be compared with earlier years, similar businesses, borrowing cost, and business risk.

What is the most common mistake in ROI questions?

The most common mistake is using profit after tax directly instead of calculating PBIT. If interest and tax have been deducted, add them back first.

How should I write the final interpretation of ROI?

Write what the percentage means in simple words. For example, if ROI is 20%, you can write that the business earns Rs. 20 before interest and tax for every Rs. 100 of capital employed.