Calculation of individual costs and WACC Lang Enterprises is interested in measuring its overall cost of capital. Current investigation has gathered the following data. The firm is in the 27% tax bracket. pay flotation costs of $20 per bond. continue into the future. The stock must be underpriced by $6 per share, and flotation costs are expected to amount to $7 per share. The firm can sell new common stock under these terms. exhausted, the firm will use new common stock as the form of common stock equity financing. a. Calculate the after-tax cost of debt. b. Calculate the cost of preferred stock. c. Calculate the cost of common stock. d. Calculate the firm's weighted average cost of capital using the capital structure weights shown in the following table, Data table (Click on the icon here in order to copy the contents of the data table below into a spreadsheet.)