As a result of the changes in accounting that have occurred since 2016, there are also changes the area of financial analysis. In this article, the author characterize the changes on an example of concrete production company comparing various economic indicators before and after the introduction of amendments to the Act on Accounting. The impacts of changes to the methodology of the calculation of these indicators are analyzed; it is shown that these changes relate in particular to the area of unfinished production. The author prove that due to these changes, it is difficult to perform year-to-year comparisons of those indicators whose calculations are subject to changes occurring in the area of financial accounting.