Cost Of Capital The required return necessary to make a capital budgeting project, such as building a new factory, worthwhile. Cost of capital includes the cost of debt and the cost of equity. Investopedia Says: The cost of capital determines how a company can raise money (through a stock issue, borrowing, or a mix of the two). This is the rate of return that a firm would receive if it invested in a different vehicle with similar risk. Related Terms: Capital Budgeting Cost Of Debt Cost Of Equity Opportunity Cost Payback Period Return On New Invested Capital - RONIC Risk Unlevered Cost Of Capital Weighted Average Cost Of Capital - WACC Weighted Average Cost of Equity - WACE |