Net Present Value (NPV): Net Present Value is the difference between the present value of cash inflows and the present value of cash outflows over a period of time, which is used to analyze the profitability of an investment.
Internal Rate of Return (IRR): Internal Rate of Return is the discount rate that makes the net present value of all cash flows from a particular investment equal to zero, which is used to evaluate the attractiveness of an investment.
Payback Period: Payback Period is the amount of time required to recover the cost of an investment, which is used to measure the liquidity of an investment.