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In economics and accounting, the cost of capital is the cost of a company's funds (both debt and equity), or from an investor's point of view is "the required rate of return on a portfolio company's existing securities". [1] It is used to evaluate new projects of a company.
The weighted average cost of capital (WACC) is the rate that a company is expected to pay on average to all its security holders to finance its assets. The WACC is commonly referred to as the firm's cost of capital. Importantly, it is dictated by the external market and not by management.
The capital charge is the cash flow required to compensate investors for the riskiness of the business given the amount of economic capital invested. The cost of capital is the minimum rate of return on capital required to compensate investors (debt and equity) for bearing risk, their opportunity cost.
Such costs are separated into a firm's cost of debt and cost of equity and attributed to these two kinds of capital sources. A firm's overall cost of capital, which consists of the two types of capital costs, is then determined as the weighted average cost of capital. Knowing a firm's cost of capital is needed in order to make better decisions ...
The weighted average cost of capital (WACC) is an approach to determining a discount rate that incorporates both equity and debt financing; the method determines the subject company's actual cost of capital by calculating the weighted average of the company's cost of debt and cost of equity.
With the cost of capital correctly and correspondingly adjusted, the valuation should yield the same result, [10] for standard cases. These approaches may be considered more appropriate for firms with negative free cash flow several years out, but which are expected to generate positive cash flow thereafter.
The rate of profit depends on the definition of capital invested. Two measurements of the value of capital exist: capital at historical cost and capital at market value. Historical cost is the original cost of an asset at the time of purchase or payment. Market value is the re-sale value, replacement value, or value in present or alternative use.
The marginal cost can also be calculated by finding the derivative of total cost or variable cost. Either of these derivatives work because the total cost includes variable cost and fixed cost, but fixed cost is a constant with a derivative of 0. The total cost of producing a specific level of output is the cost of all the factors of production.