Cost of Equity Calculator

Cost of Equity Calculator
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Description

Cost of Equity Calculator

Estimate the return shareholders require using either the dividend-growth approach or the capital asset pricing model.

Method Dividend growth Cost of equity 5.86% Components 2 Status Ready

Inputs

Choose the model that best matches the company and enter forward-looking assumptions.

Does the company pay a regular dividend?

Expected cash dividend per share over the next year.

Current market price for one common share.

Expected annual growth rate of dividends, entered as a percentage.

Live results

The estimate updates as you change an assumption.

Estimated cost of equity

5.86%

Dividend growth model

Dividend yield

2.86%

Dividend growth

3.00%

Required return on $100

$5.86

At these assumptions, shareholders require an estimated annual return of 5.86%.

Cost of equity = dividend per share ÷ share price + dividend growth

Estimated cost of equity is 5.86% using the dividend growth model.

Return component breakdown

See how each model component contributes to the selected estimate.

Cost of equity component chart Dividend yield is 2.86 percent and dividend growth is 3.00 percent.
The dividend yield and expected growth rate contribute almost equally in this example.

Calculation detail

Exact values used by the results, chart, accessible summary, and Excel export.

Component Calculation Rate Interpretation
Rates are annualized estimates. The model does not forecast realized stock returns and should be used with sensitivity analysis.

What the cost of equity estimate means

Cost of equity is the annual return that common shareholders theoretically require for supplying capital to a company. From the company’s perspective, it is a hurdle rate: an equity-funded project should generally be expected to earn enough to compensate shareholders for the risk they bear. From an analyst’s perspective, it is often used as the discount rate for cash flows that belong only to equity holders. This calculator estimates that rate with one of two established approaches rather than predicting the actual return of a stock.

The dividend-growth model is most suitable for a mature company that pays a regular dividend and has a reasonably stable long-term growth pattern. CAPM is broader and can be used for companies that do not pay dividends, but it depends on market-based assumptions that can change over time. Neither method removes judgment. A robust analysis usually tests a range of plausible inputs instead of treating one result as precise.

How to choose the model

Select Yes — use dividend growth when the company has an established dividend policy and the next annual dividend can be estimated credibly. The model adds the forward dividend yield to the expected perpetual growth rate. Select No — use CAPM when dividends are absent, irregular, or not representative of shareholder economics. CAPM adds a risk-free rate to a beta-adjusted market risk premium.

Dividend-growth inputs

  • Dividend per share is the expected dividend over the next year, not necessarily the most recently paid dividend. Enter a nonnegative currency amount. A higher dividend increases the dividend yield and therefore increases the estimated cost of equity. Company annual reports, earnings releases, and filings available through the SEC EDGAR database can help confirm declared or expected dividends.
  • Current share price is the market price for one common share. It is required and must be greater than zero because the dividend yield divides by price. Holding the dividend constant, a higher price reduces the yield and lowers the estimate. A common mistake is mixing an annual dividend with an outdated or differently adjusted share price.
  • Dividend growth rate is the expected long-run annual percentage change in dividends. Positive growth raises the cost-of-equity estimate; negative growth lowers it. The assumption should be sustainable rather than a short-term spike. Very high perpetual growth rates are usually inappropriate for mature businesses.

CAPM inputs

  • Risk-free rate represents the return available without taking equity-market risk. Analysts commonly use a government security whose currency and maturity align with the cash flows being valued. Current U.S. Treasury yield data are published by the U.S. Department of the Treasury. A higher risk-free rate increases cost of equity one-for-one.
  • Equity beta measures how sensitive the stock is to broad market movements. A beta of 1.0 applies the full market risk premium; a beta above 1.0 amplifies it; a beta between 0 and 1 reduces it. Negative betas are mathematically possible but unusual. Use a beta consistent with the company’s leverage, peer set, observation period, and market index.
  • Expected market return is the annual return expected from the relevant equity market. Subtracting the risk-free rate gives the market risk premium. The market return should be expressed in the same nominal or real terms, currency, and horizon as the risk-free rate. Historical and implied equity-risk-premium datasets from NYU Stern’s valuation resources can provide useful context.

How the formulas work

For a dividend-paying company, the calculator uses cost of equity = dividend per share ÷ current share price + dividend growth rate. The first term is the forward dividend yield, which represents cash income. The second term represents expected capital appreciation under the constant-growth assumption. For example, a $2 dividend, a $70 share price, and 3% growth produce a 2.86% dividend yield and a 5.86% cost of equity.

For CAPM, the calculator uses cost of equity = risk-free rate + beta × (expected market return − risk-free rate). The difference between market return and risk-free rate is the market risk premium. Beta scales that premium to the company’s systematic risk. The general CAPM framework and its limitations are also summarized by Investopedia’s CAPM overview.

Reading the results, chart, and table

The primary result is the selected model’s annual cost of equity. A positive value indicates the modeled return shareholders require; zero means the entered components net to zero; a negative result can occur with negative growth, a negative market premium, or a negative beta and should prompt a careful review of assumptions. “Required return on $100” converts the percentage into a dollar amount for scale, not a promised payment.

The component cards identify the two terms that sum to the total. In the dividend model, they are dividend yield and dividend growth. In CAPM, they are the risk-free rate and the beta-adjusted market premium. The bar chart plots the same current-state components and preserves negative values when they occur. The legend and calculation table use the identical model data, so their values reconcile directly to the headline result.

Practical interpretation and common mistakes

A higher cost of equity generally implies that investors perceive more risk or have better alternative opportunities. In valuation, a higher discount rate reduces the present value of future equity cash flows, while a lower rate increases it. Sensitivity matters: small changes in beta, the market risk premium, or perpetual dividend growth can materially affect conclusions.

Common mistakes include using the last dividend instead of the next expected dividend, mixing monthly and annual figures, pairing a real risk-free rate with a nominal market return, using a stale beta, and assuming unusually high dividend growth continues forever. Reset clears the model to a neutral zero state so a new case can be entered without carrying over hidden assumptions. The downloadable workbook captures the current values, formulas, component breakdown, and explanatory notes for review; it is an analytical aid, not personalized investment advice.