4. The cost of retained earnings The cost of raising capital through retained earnings is the cost of raising capital through issuing new common stock. The cost of equity using the CAPM approach The current risk-free rate of return (rRF) is 3.86% while the market risk premium is 5.75%. The Wilson Company has a beta of 0.92 . Using the capital asset pricing model (CAPM) approach, Wilson's cost of equity is The cost of equity using the bond yield plus risk premium approach The Jackson Company is closely held and, therefore, cannot generate reliable inputs with which to use the CAPM method for estimating a company's cost of internal equity. Jackson's bonds yield 11.52%, and the firm's analysts estimate that the firm's risk premium on its stock over its bonds is 4.95\%. Based on the bond-yield-plus-risk-premium approach, Jackson's cost of internal equity is: 16.47% 15.65% 18.12% 20.59%