The method of calculating the influence of the most important factors on the change in the volume of services provided by municipal laundries is considered. It is proposed to use mathematical multiplicative models in modeling and factor analysis of this indicator, which contain a number of different technical and operational factors that reflect the characteristics of economic activity and the final production result of these enterprises. To determine the quantitative impact of these factors on the overall change in the studied indicator of the volume of provided laundry services, it is recommended to carry out the step-by-step factor analysis of this indicator using the method of chain substitutions. This makes it possible, depending on the available statistical information and the purpose of the analysis to perform two-factor, three-factor and multifactor analysis of this indicator. This methodological approach allows in each case to calculate the impact on changes in the volume of laundry services only those factors that are currently the most significant. It is proposed in the process of factor analysis of this indicator to calculate the absolute and relative influence of individual factors on its change, as well as the structure of such influence, which allows to determine the way of enterprise development from the economic point of view (extensively or intensively). The given method of factor analysis of the volume of laundry services provided allows us to decompose this synthetic indicator into a number of analytical components, present it in the form of deterministic economic and mathematical models, determine the influence of individual factors on its change, investigate the patterns of such an impact, use the obtained analytical information in substantiating and adopting appropriate management decisions.