Required cash is cash tied up in the normal course of business, while surplus cash is what remains after required cash, operating expenses, and reinvestments
Discounted cash flow (DCF) valuation technique involves estimating future cash flows, discounting them for risk and delay, summing up all discounted cash flows to obtain the venture's present value
Equity valuation involves the pseudo-dividend approach, where pseudo dividends are calculated by ensuring required investments in working capital do not include surplus cash