EN
Currently on the IT and business market there is a high competition of Information Accounting Systems. Due to this fact business organizations have the major problem with selecting the right products. There are two variants of such a selection:* acquisition of a new system, * replacement of old environment. The authors of the paper try to analyze mentioned variants in the area of ownership, functionality of system which is more described in point 2 as well as flexibility of system that is presented in details in point 3.