摘要:The purpose of the paper is to identify factor space influencing on the value of discount rate in the assessment of effectiveness of investment and construction projects. As a result of investigation, a general classification of investment and construction risks was drawn up, depending on influence of external and internal environment of the enterprise. The factor space, which is used for initial data of separate investment and construction projects, was identified. A general algorithm of risk assessment of investment and construction project is developed, taking into account the reasoned justification of the method used for discount rate calculation, with the possible application of the variable discount rate at different stages of project’s life cycle.