WACC Calculator
Weighted Average Cost of Capital (WACC) is the rate that a firm is expected to pay on average to all its different investors and creditors to finance its assets. You can use this WACC Calculator to calculate the weighted average cost of capital based on the cost of equity and the aftertax cost of debt.
WACC Formula
The calculator uses the following basic formula to calculate the weighted average cost of capital:
WACC = (E / V) Ã— R_{e} + (D / V) Ã— R_{d} Ã— (1 âˆ’ T_{c})
Where:
WACC is the weighted average cost of capital,
R_{e} is the cost of equity,
R_{d} is the cost of debt,
E is the market value of the company's equity,
D is the market value of the company's debt,
V = E + D is the total market value of the company's financing (equity and debt),
E/V is the percentage of equity financing,
D/V is the percentage of debt financing,
T_{c} is the corporate tax rate.
Example: Suppose we have the following information about a firm:
 Debt (D) = $5,000
 Equity (E) = $15,000
 R_{d} = 8%
 R_{e} = 13.5%
 Corporate Tax Rate (T_{c}) = 20%
In this example, the WACC would be calculated as follows:
WACC = (E / V) Ã— R_{e} + (D / V) Ã— R_{d} Ã— (1 âˆ’ T_{c})
WACC = [(15000 / 15000 + 5000) Ã— 0.135] + [(5000 / 15000 + 5000) Ã— 0.08 Ã— (1 âˆ’ 0.2)]
WACC = 0.10125 + 0.016 = 0.11725 or 11.725%, the WACC for this firm is 11.725%
What is WACC Calculator
A WACC (Weighted Average Cost of Capital) calculator is a tool used to estimate the overall cost of capital for a company. The WACC represents the average rate of return that a company needs to earn on its investments to satisfy its investors and finance its operations.
Here's how a typical WACC calculator works:

Cost of Equity: You input the cost of equity, which represents the rate of return expected by shareholders or equity investors. This can be estimated using various methods, such as the dividend discount model or the capital asset pricing model (CAPM).

Cost of Debt: You input the cost of debt, which represents the interest rate or yield required by lenders or bondholders. This can be obtained from the market interest rates or the company's borrowing costs.

Equity Weight: You input the weight or proportion of equity financing in the company's capital structure. This is typically calculated by dividing the market value of equity by the total market value of the company's equity and debt.

Debt Weight: You input the weight or proportion of debt financing in the company's capital structure. This is typically calculated by dividing the market value of debt by the total market value of the company's equity and debt.

Tax Rate: You input the corporate tax rate, which represents the percentage of profits that are paid in taxes. This is important because the interest paid on debt is taxdeductible, resulting in a lower aftertax cost of debt.

WACC Calculation: The WACC calculator uses the formula:
WACC = (Equity Weight * Cost of Equity) + (Debt Weight * Cost of Debt * (1  Tax Rate))
It multiplies the cost of equity by the equity weight, adds it to the product of the cost of debt, debt weight, and (1  tax rate), to calculate the weighted average cost of capital.
The WACC calculator provides an estimate of the overall cost of capital for a company, taking into account both equity and debt financing. It reflects the average rate of return that the company needs to generate from its investments to satisfy all its capital providers.
By using the WACC, companies can evaluate the costeffectiveness of new investment projects, determine the minimum rate of return required for accepting projects, and assess the attractiveness of different financing options.
It's important to note that the WACC is based on various assumptions and simplifications, and it may not capture all nuances of a company's capital structure or risk profile. Companies should also consider other factors and financial analysis methods when making investment and financing decisions.
Additionally, the accuracy of the WACC calculation depends on the reliability of input data, such as the cost of equity, cost of debt, weights, and tax rate. These values may change over time and can vary based on market conditions and the company's specific circumstances.
Overall, a WACC calculator is a helpful tool for estimating the weighted average cost of capital, enabling companies to assess the profitability and risk of their investments and make informed financial decisions.
WACC Calculator Example
Certainly! Here's an example of using a table to calculate the Weighted Average Cost of Capital (WACC) for a company:
Source of Capital  Weight  Cost of Capital 

Debt  40%  5% 
Equity  60%  12% 
In this example, we have two sources of capital for the company: debt and equity. We will calculate the Weighted Average Cost of Capital (WACC) based on the weights assigned to each source and their respective costs of capital.
To calculate the Weighted Average Cost of Capital (WACC), you can use the formula:
WACC = (Weight of Debt * Cost of Debt) + (Weight of Equity * Cost of Equity)
For instance, for the given weights and costs of capital:
WACC = (0.40 * 0.05) + (0.60 * 0.12)
This equation simplifies to:
WACC = 0.02 + 0.072
After evaluating the expression, the WACC would be approximately 0.092 or 9.2%.
The Weighted Average Cost of Capital (WACC) is a measure of the average rate of return that a company must generate to satisfy its capital providers, both debt and equity. It takes into account the proportions of debt and equity in the company's capital structure and the respective costs of each source. By using the WACC, companies can evaluate the feasibility of investment projects and make informed financial decisions that align with their capital structure and cost of capital.