## About Cost of Capital Calculator (Formula)

A “Cost of Capital Calculator” is a tool used to determine the weighted average cost of capital (WACC) for a company, which represents the average cost of various sources of financing used to fund its operations. The cost of capital is a critical metric in finance and investment analysis as it reflects the minimum rate of return that a company needs to earn on its investments to satisfy its investors and creditors. This calculator assists businesses in evaluating investment opportunities and making financial decisions. The formula for calculating the cost of capital provides insights into the overall cost of funding.

The formula for calculating Weighted Average Cost of Capital (WACC) is:

**WACC = (E / V) * Re + (D / V) * Rd * (1 – Tax Rate)**

Where:

- WACC is the weighted average cost of capital.
- E is the market value of the company’s equity.
- V is the total market value of the company (E + D, where D is the market value of debt).
- Re is the cost of equity.
- D is the market value of the company’s debt.
- Rd is the cost of debt.
- Tax Rate is the corporate tax rate.

This formula takes into account the cost of equity, the cost of debt adjusted for taxes, and the relative proportions of equity and debt in the company’s capital structure.

For example, if a company’s equity is valued at $5 million, its debt is valued at $3 million, the cost of equity is 10%, the cost of debt is 5%, and the tax rate is 25%, the WACC would be:

WACC = ($5M / $8M) * 0.10 + ($3M / $8M) * 0.05 * (1 – 0.25) = 0.0625 or 6.25%

This means that the weighted average cost of capital for the company is 6.25%.

The Cost of Capital Calculator is used by finance professionals, analysts, and companies to assess the cost of funding and evaluate the feasibility of investment projects. It aids in determining whether the returns generated from investments exceed the cost of capital, helping businesses make financially sound decisions.