Innovative activity of an enterprise is connected with manufacturing and sales of new, science-intensive goods. Due to this fact, methodic principles for computing economic efficiency of implemented innovations are gaining paramount importance. The life cycle of an innovative product can be conditionally divided into two stages: the first stage - as the period of creation, the second stage – as the period of the product’s implementation in manufacturing. Implementation of newly developed equipment, technology, principle of labor organization, etc. can result in economic as well as social, ecological, or other positive effects. In order to compute the social and economic effects, it is possible to use the method absolute or comparative effectiveness. The article introduces a simple technique of computing the price of innovational product, which is particularly important for agricultural entities, as well as computing the stages and terms of conducting economic evaluations of innovative products for an enterprise.