Abstract
In IT project management, reserve is the important element for risk resolution. However, there are some technical and business problems for reserve estimation at ballpark estimate stage. In order to make well-grounded reserve estimation under the circumstances, there are mainly three methods for reserve estimation which is method based on risk analysis, multiplying fixed rate based on project risk level, and estimation by range. Monte Carlo method is one of the range estimation and it makes possible to evaluate all possible scenarios and their values. Such method will be effective to risk based reserve estimation.
