Do you know that IRR and NPV methods give wrong results? Read the book 'TrueIRR' or download the attached document to know when and why wrong results occur and solutions for the same. TrueIRR is an improvement of IRR and NPV. It overcomes the problem of multiple IRRs and the problem of contradictory results by IRR and NPV. The IRR method has many deficiencies and foremost of them is the existence of multiple IRRs to a cash flow series. The multiple IRRs occur because of an inherent assumption in the application of the IRR method. The assumption is that the cost of borrowing and the rate of return on investment are equal. Because of this false assumption, we may get multiple IRRs or we may not get an IRR. Even if we get a single IRR, that may not be the correct IRR. The TrueIRR method has been developed to solve the problem of multiple IRRs, without loosing the advantages of the IRR. There have been never ending debates on the superiority of the IRR over the NPV and vice versa. This controversy is settled once for all. It was being argued that the conflicting results occur due to the 'reinvestment assumption' implicit in all methods using the discounted cash flow technique. However, it has been found that the IRR method simply involves finding a compounded rate of interest and nothing more.