EVA is a measure of economic profit that is calculated as net operating profit after tax minus the opportunity cost of invested capital. The opportunity cost is determined by the weighted average cost of capital and the amount of capital employed. EVA measures all costs of running a business, including operating and financing costs. Companies aim to increase EVA by improving net operating profit, reducing costs of capital, and investing in projects with returns exceeding costs of capital while divesting from projects with lower returns. Stern Stewart & Co developed EVA and related metrics like MVA and FGV to evaluate company performance and value.