The discounted payback period uses the present values of the project’s estimated cash flows. It is the number of years it takes a project to recover its initial investment in present value terms and, therefore, must be greater than the payback period without discounting.
The discounted payback period addresses one of the drawbacks of the payback period by discounting cash flows at the project’s required rate of return. However, the discounted payback period still does not consider any cash flows beyond the payback period, which means that it is a poor measure of profitability. Again, its use is primarily as a measure of liquidity.