Cost of Equity Formula

What is Cost of Equity Capital Formula?

Cost of equity (Ke)Cost Of Equity (Ke)Cost of equity is the percentage of returns payable by the company to its equity shareholders on their holdings. It is a parameter for the investors to decide whether an investment is rewarding or not; else, they may shift to other opportunities with higher more is what shareholders expect to invest their equity into the firm. Cost of Equity formula can be calculated through below two methods:

We will discuss each of the methods in detail.

Method #1 – Cost of Equity Formula for Dividend Companies

Cost of Equity (Ke) = DPS/MPS + r


The dividend growth model requires that a company pays dividends, and it is based on upcoming dividends. The logic behind the equation is that the company’s obligation to pay dividends is the cost of paying its shareholders and, therefore, the Ke, i.e., cost of equity. This is a limited model in its interpretation of costs.

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Cost of Equity Calculations

You can consider the following example for a better understanding of the Cost of Equity Formula:

You can download this Cost of Equity Formula Excel Template here – Cost of Equity Formula Excel Template

Example #1

Let’s try the calculation for Cost of Equity formula with a 1st formula where we assume a company is paying regular dividends. 

Suppose a company named XYZ is a regularly paying dividend company, and its stock price is currently trading at 20 and expects to pay a dividend of 3.20 next year has following dividend payment history. Calculate the cost of equity of the company.

YearDividend Per Share


Let’s first calculate the average growth rate of dividends. Continuing the same formula as per below will yield yearly growth rates.

cost of equity formula excel1.2

So the growth rate for all the years will be-

cost of equity formula excel1.3

Now take a simple average growth rate, which will come to 1.31%.

Now we have all the inputs i.e. DPS for next year = 3.20, MPS = 20 and r = 1.31%


  • Cost of Equity Formula= (3.20/20) + 1.31%
  • Cost of Equity Formula= 17.31%
  • Hence, the cost of equity for the XYZ company will be 17.31%.

Example #2 – Infosys

Below is the dividend history of the company, ignoring interim and any special dividendSpecial DividendThe term "Special Dividend" refers to an amount distributed to shareholders in the name of a dividend that is in addition to the regular dividend. Companies do this in the event of an unexpected inflow of cash or more for the time being.

Announcement DateEffective DateDividend TypeDividend (%)RemarksDividend Per Share
12/04/201814/06/2018Final410Rs. 20.5000 per share (410%) Final Dividend20.50
13/04/201701/06/2017Final295Rs. 14.7500 per share (295%) Final Dividend14.75
15/04/201609/06/2016Final285Rs. 14.2500 per share (285%) Final Dividend14.25
24/04/201515/06/2015Final590Rs. 29.5000 per share (590%) Final Dividend (equivalent to Rs 14.75/- per share after 1.1 bonus issue)29.50
15/04/201429/05/2014Final860Rs. 43.0000 per share (860%) Final Dividend43.00
12/04/201330/05/2013Final540Rs. 27.0000 per share (540%) Final Dividend 27.00
13/04/201224/05/2012Final640Rs. 22.00 per share (440%) Final Dividend & Rs.10.00 per share (200%) Special Dividend22.00

The Share price of Infosys is 678.95 (BSE), and its average dividend growthDividend GrowthDividend Growth is defined as a significant rise in a company's dividend payout to its shareholders from one period of time to another in comparison to the dividend payout of the previous period of time (generally the growth is calculated on yearly basis).read more rate is 6.90%, computed from the above table, and it paid last dividend 20.50 per share.


  • Cost of Equity Formula = {[20.50(1+6.90%)]/678.95} +6.90%
  • Cost of Equity Formula = 10.13%

Method #2 – Cost of Equity Formula using CAPM Model

Below is the formula of the Cost of Equity using the Capital Asset Pricing ModelCapital Asset Pricing ModelThe Capital Asset Pricing Model (CAPM) defines the expected return from a portfolio of various securities with varying degrees of risk. It also considers the volatility of a particular security in relation to the more.

cost of equity formula2


  • R(f) = Risk-Free Rate of Return
  • β = Beta of the stock
  • E(m) = Market Rate of Return
  • [E(m)-R(f)] = equity risk premium

The capital asset pricing model (CAPM), however, can be used on n number of stock, even if they are not paying dividends. With that said, the logic behind CAPM is rather complicated, which suggests the cost of equity (Ke) is based on the stock’s volatility, which is computed by Beta and level of risk compared to the general market, i.e., the equity market risk premiumMarket Risk PremiumThe market risk premium is the supplementary return on the portfolio because of the additional risk involved in the portfolio; essentially, the market risk premium is the premium return investors should have to make sure to invest in stock instead of risk-free more which is nothing but a differential of Market Return and Risk-Free Rate.

In the CAPM equation, the risk-free rate (Rf)The Risk-free Rate (Rf)A risk-free rate is the minimum rate of return expected on investment with zero risks by the investor. It is the government bonds of well-developed countries, either US treasury bonds or German government bonds. Although, it does not exist because every investment has a certain amount of more is the rate of return paid on risk-free investments like Government bonds or Treasuries. Beta, a measure of risk, can be calculated as a regression on the company’s market price. The higher the volatility goes, the higher the beta will come, and its relative risk compared to the general stock market. The market rate of return Em(r) is the average market rate, which has generally been assumed to be eleven to twelve % over the past eighty years. In general, a company with a high beta will have a high degree of risk and will pay more for equity.

Example #1

Below, inputs have been arrived for the three companies, calculate its cost of equity.

Risk Free Beta3.00%3.40%4.00%
Market Return7.00%7.00%7.00%


First, we will calculate the equity risk premiumThe Equity Risk PremiumEquity Risk Premium is the expectation of an investor other than the risk-free rate of return. This additional return is over and above the risk free more, which is the difference between Market Return and Risk-Free Return Rate, i.e. [E(m) – R(f)]

cost of equity formula excel2.2

Then we will calculate cost of equity using CAPM i.e. Rf + β [E(m) – R(f)]  i.e. Risk-free rate + Beta(Equity Risk Premium).

Continuing the same formula as per above for all the company, we will get the cost of equity.

cost of equity formula excel2.4

So, the cost of equity for X, Y, and Z comes to 7.44%, 6.93%, and 8.20%, respectively.

Example #2 – TCS Cost of Equity using the CAPM Model

Let’s try the calculation of the cost of equity for TCS through CAPM Model.

For the time being, we will take 10-year Govt Bond yield as Risk-Free Rate as 7.46%

10-year Govt Bond yeild


Secondly, we need to come up to Equity Risk Premium,

Equity Risk Premium table


For India, Equity Risk Premium is 7.27%.

Now we need Beta for TCS, which we have taken from Yahoo finance India.

Beta for TCS


So the cost of equity (Ke) for TCS will be-

  • Cost of Equity Formula = Rf + β [E(m) – R(f)]
  • Cost of Equity Formula= 7.46% + 1.13 * (7.27%)
  • Cost of Equity Formula= 15.68%

Cost of Equity Calculations

You can use the following Cost of Equity Formula Calculator.

Dividend per Share
Market price per Share
Growth Rate of Dividends
Cost of Equity Formula =

Cost of Equity Formula = =
Dividend per Share
+ Growth Rate of Dividends =
Market price per Share
+0 = 0

Relevance and Use

Cost of Equity Formula in Excel (with excel template)

Now let us take the case mentioned in the above Cost of Equity Formula Example #1 to illustrate the same in the excel template below.

Suppose a company named XYZ is a regularly paying dividend company. Its stock price is currently trading at 20 and expects to pay a dividend of 3.20 next year has the following dividend payment history.

In the below-given table is the data for the calculation of the cost of equity.

cost of equity formula excel1.6

In the below given excel template, we have used the calculation of Cost of Equity Equation to find the Cost of Equity.

cost of equity formula excel1.4

So the calculation of the Cost of equity will be-

cost of equity formula excel1.5

Cost of Equity Formula Video


Recommended Articles:

This article has been a guide to the Cost of Equity Formula. Here we learn the two methods to calculate the cost of equity 1) for dividend-paying companies 2) using CAPM Model along with practical examples and concepts. You may learn more about valuations from the following articles –