Explain the Net Present Value Method of valuation?

The Net Present Value (NPV) method of valuation assesses the profitability of an investment by calculating the difference between the present value of cash inflows and outflows over a specific period. It discounts future cash flows back to their present value using a specified discount rate, typically reflecting the cost of capital or required rate of return. A positive NPV indicates that the projected earnings exceed the costs, making the investment potentially worthwhile, while a negative NPV suggests the opposite. This method helps investors and companies make informed financial decisions.