Chapter 11 The Cost of Capital 261
23. Flotation costs associated with issuing new equity cause the cost of external equity to be lower
than the cost of retained earnings.
24. If expectations for long-term inflation rose, but the slope of the SML remained constant, this
would have a greater impact on the required rate of return on equity, ks, than on the interest rate
on long-term debt, kd, for most firms. In other words, the percentage point increase in the cost of
equity would be greater than the increase in the interest rate on long-term debt.
25. A firm going from a lower to a higher tax bracket could increase its use of debt, yet actually wind
up with a lower after-tax cost of debt.
26. Since 70 percent of preferred dividends received by a corporation is excluded from taxable
income, the component cost of equity for a company which pays half of its earnings out as
common dividends and half as preferred dividends should, theoretically, be
Cost of equity = ks(0.30)(0.50) + ks(1 – T)(0.70)(0.50).
27. The steeper the demand curve for a firm’s stock, the closer the values of ks and ke are to one
another, other things held constant.
28. In general, it is not possible for ke, the cost of new equity, to be lower than ks, the cost of retained
earnings. However, an exception to this rule occurs when the stock price increases just prior to
the firm issuing new equity such that it more than offsets the flotation costs and thus, ke becomes
less than ks.
29. The cost of debt, kd, is always less than ks, so kd(1 – T) will certainly be less than ks. Therefore,
since a firm cannot be 100% debt financed, the weighted average cost of capital will always be
greater than kd(1 – T).
30. Firms should use their weighted average cost of capital (WACC) when they are funding their
capital projects with a variety of sources. However, when the firm plans on using only debt or
only equity to fund a particular project, it should use the after-tax cost of the specific source of
capital to evaluate that project.