Organization of tax data warehouse for legal entities

Legal entities information systems for tracking tax changes belong to the group of business office information systems, which provide answers to the user requirements on the monitoring of tax changes. By its structure, such information system represents only one segment of the overall legal entities information system, but despite this it has a central role in reporting to the Tax authorities and it represents the link between legal entities and the Tax authorities. This paper describes a model for storing tax data that has been implemented in practical business applications. Furthermore it describes the process of building and organization of the data warehouse and implemented ETL process for the extraction, cleansing and transformation of data in a multidimensional model of tax data warehouses, which is based on the metadata model and model of the set of legal rules. In addition it states a concept and basic methods used in the development of business intelligence systems for the construction and use of a warehouse and it gives guidelines for future development. Model warehouse tax information forms the basis for the execution of various analysis for decision making. Formalizing the process performance analysis directly affects the quality of business intelligence.