Posted by Anjali Kaur on Oct 14, 2021
factors affecting capital structure

Determinants of the optimal capital structure

A capital structure is said to be optimal when the proportion of debt and equity is such that it increases the value of equity shares. In this post, we will learn the main determinants of optimal capital structure.

Feel free to join my YouTube channelFacebook group for Business Studies students, subscribe to this website, and get a monthly collated mailer.

Factors affecting the optimal capital structure
Factors affecting the choice of capital structure

Factors affecting the choice of capital structure

Factors or determinants of the optimal capital structure are:

1. Cash Flow Position

While deciding the capital structure, the future cash flow position should be kept in mind. If the company wants to raise debt, it must ensure that enough cash flows are expected to meet debt obligations. Debt obligations include interest payment and repayment of the principal amount.

In the case of cash-shortage is expected, then companies should use more equity.

2. Interest Coverage Ratio

Interest Coverage ratio refers to the number of times earnings before interest and taxes (EBIT) of a company covers interest obligation.


Higher ICR means companies can have more debt as there is less risk of meeting the interest payment obligation.

In case of a lower ratio, companies should use less debt.

3. Debt Service Coverage Ratio

It takes care of the deficiencies referred to in the interest coverage ratio. The cash profit generated by the operations is compared with the total cash required for the service of the debt and the preference share capital.

A higher debt service coverage ratio indicates a better ability to meet cash commitments and consequently the companies potential to increase the debt component in its capital structure.

Factors affecting capital structure

4.Return on Investment

If the rate of investment increases, it can choose to use trading on equity to increase its earnings per share, that is, its ability to use debt is greater.

For example, return on investment is 6.67% whereas interest on debt is 10%, in this case, the use of debt reduces the Earnings per share.

5. Cost of debt

A firm’s ability to borrow at a lower rate increases its capacity to employ higher debt. Therefore, more debt can be used if the debt can be raised at a lower rate.

6. Tax rate

Since interest is a deductible expense, the cost of debt is affected by the tax rate. An increase in tax rate makes debt relatively cheaper and increases its attraction as compared to equity.

7. Cost of equity

The use of higher debt increases the cost of equity as the financial risk faced by the equity shareholder increases, hence debt should be used up to a level.

8. Control

If an existing shareholder wants complete control then they should prefer debt, loans of small amount, etc. If they don’t mind sharing the control then they may go for equity shares also.

9. Floatation Cost

Floatation cost is the cost involved in the issue of shares or debenture. These costs include the cost of advertisement, underwriting statutory fees, etc.

Issue of shares, debentures requires more formalities as well as more floatation cost. Whereas, there is less cost involved in raising capital by loans or advances.

10. Risk consideration

Financial risk refers to a position when a company is unable to meet its fixed financial charges such as interest, preference dividend, payment to creditors, etc. If a firm’s business risk is low then it can raise more capital by issue of debt otherwise, it should depend on equity.

11. Flexibility

If a firm uses its debt potential to the full, it loses the flexibility to issue further debt. To maintain flexibility, it must maintain some borrowing power to take care of unforeseen circumstances.

12. Regulatory framework

Issue of shares and debentures have to be done within the SEBI guidelines and for taking loans. Companies have to follow the regulations of monetary policies.

13. Stock market conditions

There are 2 main conditions of the market, that is, Boom condition and Recession or Depression condition. These conditions affect the capital structure especially when the company is planning to raise additional capital.

During the depression, investors prefer debt whereas, during the booming equity is preferred.

14. Capital structure of other companies

A useful guideline in capital structure planning is the debt-equity ratios of other companies in the same industry. There are usually the same industry norms that may help. For example, if the business risk of a firm is higher, it cannot afford the same financial risk.

So many factors, how can we memorize them?

Use the code 5C-3R-2F-1D-SIT


5 C includes; Cash flow position, Cost of Debt, Cost of Equity, Control and Capital structure of other companies.

3R includes; Return on investment, Risk consideration and Regulatory framework

2F includes; Floatation cost and Flexibility

1D includes; Debt service coverage ratio

SIT includes; Stock market conditions, Interest coverage ratio and Tax rate

Thank You!

You can read more topics related to business studies:

Consumer Protection

What is marketing management?
Consumer Protection Act, 1986

Marketing Mix
The 5 marketing management philosophies

Advertising in Promotion Mix
Marketing Mix- product

Promotion- Marketing Management
What are the functions of marketing management?

Marketing Mix Element- Price

Personal Selling
Packaging as an element of the marketing mix

Place mix in marketing

Feel free to join our Facebook group and subscribe to this website to get daily educational content in your mailbox.

Happy Learning!

Disclosure: Some of the links on the website are ads, meaning at no additional cost to you, I will earn a commission if you click through or make a purchase. Please support me so that I can continue writing great content for you.

Notify of
Inline Feedbacks
View all comments

Learn with Anjali started because there wasn't an easy-to-consume resource to help students with their studies. Anjali is on single-minded mission to make you successful!

If you would like to suggest topics, leave feedback or share your story, please leave a message.

Leave a message