The purpose of this paper is to present the new quantitative calculation methodology model for
estimating the quantitative monetary managerial effects such as contribution profit and reduced cost as a result of total productive maintenance (TPM)activities to measure what degree of contribution to the managerial profits. In this paper, to show the calculation methods of the managerial effect as the summed-up value of the contribution profit and saved cost based on TPM activities, the calculating methodology example for the processing type of manufacturing industry is presented. This newly presented model is expected to contribute to the maturity of TPM activities by grasping the monetary quantitative managerial effects periodically. This model can be adapted to all processing types and/or plant type manufacturing equipment that overall equipment efficiency (OEE) can be calculated.