Weighted Average Cost Of Capital - WACC
- Weighted Average Cost Of Capital - WACC
- A calculation of a firm's cost of capital in which each category of capital is proportionately weighted. All capital sources - common stock, preferred stock, bonds and any other long-term debt - are included in a WACC calculation. All else equal, the WACC of a firm increases as the beta and rate of return on equity increases, as an increase in WACC notes a decrease in valuation and a higher risk.
The WACC equation is the cost of each capital component multiplied by its proportional weight and then summing:

Where:
Re = cost of equity
Rd = cost of debt
E = market value of the firm's equity
D = market value of the firm's debt
V = E + D
E/V = percentage of financing that is equity
D/V = percentage of financing that is debt
Tc = corporate tax rate
Businesses often discount cash flows at WACC to determine the Net Present Value (NPV) of a project, using the formula:
NPV = Present Value (PV) of the Cash Flows discounted at WACC.
Broadly speaking, a company’s assets are financed by either debt or equity. WACC is the average of the costs of these sources of financing, each of which is weighted by its respective use in the given situation. By taking a weighted average, we can see how much interest the company has to pay for every dollar it finances.
A firm's WACC is the overall required return on the firm as a whole and, as such, it is often used internally by company directors to determine the economic feasibility of expansionary opportunities and mergers. It is the appropriate discount rate to use for cash flows with risk that is similar to that of the overall firm.
Investment dictionary.
Academic.
2012.
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weighted average cost of capital — ( WACC) expected return on a portfolio of all a firm s securities. Used as a hurdle rate for capital investment. Often the weighted average of the cost of equity and the cost of debt The weights are determined by the relative proportions of… … Financial and business terms
weighted-average cost of capital — ( WACC) expected return on a portfolio of all a firm s securities. Used as a hurdle rate for capital investment. Often the weighted average of the cost of equity and the cost of debt The weights are determined by the relative proportions of… … Financial and business terms
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Weighted average cost of capital — Expected return on a portfolio of all the firm s securities. Used as a hurdle rate for capital investment. The New York Times Financial Glossary * * * ► See WACC … Financial and business terms