reinvestment rate of 12%. First, we calculate the present value of the negative cash flows (discounted at the finance rate): . Second, we calculate the future value of the positive cash flows (reinvested at the reinvestment rate): . Third, we find the MIRR: . The calculated MIRR (17.91%) is significantly different from the IRR (25.48%). Comparing projects of different sizes Like the internal rate of return, the modified internal rate of return is not valid for ranking projects of different sizes, because a larger project with a smaller modified internal rate of return may have a higher net present value. However, there exist variants of the modified internal rate of return which can be used for such comparisons. References Mathematical finance Investment Capital budgeting