What is the Difference Between Cost of Capital and WACC?

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The cost of capital and the weighted average cost of capital (WACC) are both concepts of finance that represent the cost of obtaining capital for a company. However, there are some differences between the two:

  • Cost of Capital: This represents the minimum return necessary to justify a particular investment, such as purchasing new equipment or constructing a new building. It encompasses the cost of both equity and debt, weighted according to the company's preferred or existing capital structure.
  • WACC: This is the most common method for calculating the cost of capital, and it equally averages a company's debt and equity from all sources. WACC is the average rate that a company expects to pay to finance its business, and it is commonly used as a hurdle rate against which companies and investors can gauge the attractiveness of investments.

In summary, the cost of capital represents the overall cost of obtaining capital for a company, while WACC is a specific method for calculating the cost of capital by considering the weighted average of the costs of debt and equity.

Comparative Table: Cost of Capital vs WACC

The cost of capital and the weighted average cost of capital (WACC) are both measures used to evaluate the cost of financing a company's operations. Here is a table highlighting the differences between the two:

Cost of Capital Weighted Average Cost of Capital (WACC)
Represents the minimum return necessary to justify a company's investment decisions. Calculates the average cost of all capital sources, including debt and equity, proportionally weighted according to the company's capital structure.
Encompasses both equity and debt, but not weighted according to the company's capital structure. Considers every type of debt and equity on the company's balance sheet, including common and preferred stock, bonds, and other forms of debt.
Used to evaluate the financial viability of a company's projected decisions. Used to calculate the company's overall cost of capital, which is derived from the weighted average cost of all capital sources.
Formula: Not provided in the search results. Formula: $$WACC = \frac{E}{V} \times Re + \frac{D}{V} \times Rd \times (1 - Tc)$$, where E = market value of equity, D = market value of debt, Re = cost of equity, Rd = cost of debt, Tc = corporate tax rate.

In summary, the cost of capital is a broader concept that represents the minimum return required to justify a company's investment decisions, while WACC is a specific calculation that measures the average cost of all capital sources, weighted according to the company's capital structure.