Glossary

WACC (weighted average cost of capital)

The average return a company's lenders and shareholders expect, weighted by how much of each it uses.

WACC blends the cost of equity (the return shareholders expect) and the after-tax cost of debt, weighted by the market value of each in the company's capital.

It is the hurdle a business has to clear. A company whose return on invested capital is above its WACC creates value; one below it destroys value. WACC is also the usual discount rate in a discounted cash flow valuation.

Small changes in its inputs move a valuation a lot, so treat any single WACC as an estimate.

Try it: WACC calculator

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