On the most basic level, if a firm’s Weighted Average Cost of Capital WACC is 12%, what does this mean? Why do we use an after-tax figure for the cost of debt but not for the cost of equity?

ContentWACC: Weighted Average Cost of Capital ExplainedRisk-Free RateCalculating WACC in ExcelHow is WACC different than Cost of Capital?Understanding the Weighted Average Cost of Capital (WACC)WACC Calculator They start by issuing and selling 7,500 shares at 90 euro...