Weighted Average Cost Of Capital Calculator


Understanding the Weighted Average Cost of Capital (WACC) is essential for businesses in evaluating the cost of financing. Our WACC Calculator provides a straightforward way to estimate WACC, taking into account equity, debt, cost of equity, cost of debt, and tax rates.


The Weighted Average Cost of Capital is calculated using the following formula: WACC=(EquityEquity + Debt)×Cost of Equity+(DebtEquity + Debt)×(Cost of Debt×(1−Tax Rate))WACC=(Equity + DebtEquity​)×Cost of Equity+(Equity + DebtDebt​)×(Cost of Debt×(1−Tax Rate))

How to Use

  1. Enter the value of equity.
  2. Input the value of debt.
  3. Specify the cost of equity as a percentage.
  4. Specify the cost of debt as a percentage.
  5. Enter the tax rate as a percentage.
  6. Click the “Calculate” button to get the estimated Weighted Average Cost of Capital.


Suppose a company has $5 million in equity, $3 million in debt, a cost of equity of 8%, a cost of debt of 5%, and a tax rate of 25%. Using the WACC Calculator, you can quickly estimate the Weighted Average Cost of Capital.


  1. Q: Why is WACC important for businesses? A: WACC is a crucial metric for assessing the cost of financing and making investment decisions. It represents the average rate of return a company is expected to provide to all its investors.
  2. Q: How is WACC used in financial decision-making? A: WACC is used to discount future cash flows in investment appraisal, helping businesses determine the viability of projects.
  3. Q: Why does the calculator consider tax rates? A: Tax rates are considered in the formula because interest on debt is tax-deductible, affecting the overall cost of debt.
  4. Q: Can WACC be used for any type of business? A: Yes, WACC is a universal metric applicable to businesses in various industries.
  5. Q: Is a lower or higher WACC better? A: In general, a lower WACC is favorable as it indicates a lower cost of capital for the company.


The WACC Calculator is a valuable tool for businesses making financial decisions and evaluating investment opportunities. By considering equity, debt, cost of equity, cost of debt, and tax rates, businesses can estimate the Weighted Average Cost of Capital for more informed financial planning.

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