The standard costing provides a number of information useful in the management process. In particular, these are data on the level of deviations of manufacturing costs. Effective control requires determining the reasons for the deviations. Factor analysis is the basic tool for calculating the impact of changes in the level of observed factors affecting costs. The impact of these factors can be calculated using the standard cost deviation analysis model. The model determines the stages of the procedure, the components on which the total deviation is divided and how the individual elements are calculated. In this approach, the method of subsequent substitutions is dominated. In connection with the subjectivism of this method, the algorithm has been proposed in the article. In order to improve the objectivity of division of partial deviations, the article presents an approach using the logarithmic method.(original abstract)