The project “Transparency in the Use of Public Finances, Public Finance Data Warehouse” is part of a comprehensive programme plan, which includes several coordinated project elements for the utilisation of data assets managed by the Hungarian State Treasury, the development of the public finance information system, the rationalisation of the data and information flow of the general government, the improvement of transparency and the development of a data warehouse and its associated up-to-date decision support functions. The information base supporting the monitoring, monitoring and analysis of processes related to the implementation of the central budget is currently highly fragmented. The IT processing applications supporting day-to-day operations and the central data collection systems perform the acquisition, consistency and storage of data, so they are optimised for the support of business and transaction processes and for the simple and rapid implementation of events (data entry, data modification). These so-called operational systems are not suitable for analysts, data mining, simulation or managerial queries that manage a large number of data. As these systems generally operate in isolation, queries are based only on the data of the given system, so that an up-to-date and complete platform for analysing data from different IT systems and data services in combination and context is currently not available to underpin decisions at government level. Consequently, the budgetary planning system has not changed fundamentally over the last 25 years. The presentation by user of each budget line is almost exclusive and it is not possible to see what results are being achieved from budget expenditure and what the taxpayer’s public money is going to be. However, the Government is no longer satisfied with the collection of historical operational data and its monoplanar evaluation at specified intervals. The project aims to achieve the objectives of measure 5 of specific objective 2 of KÖFOP priority 2, implemented by the consortium of the Hungarian State Treasury and KINCSINFO Kincstári Informatikai Nonprofit Kft. The consortium is led by the Hungarian State Treasury under the IT support of KINCSINFO. The project aims to implement the following activities and IT system developments: 1) Improve data quality through the development of the data warehouse’s predecessor systems, create cooperative system elements supporting complex central control and local administration — as a central control system, the central accounting subsystem is created, in which the data providers of the central budget circle record their data, while the Treasury performs an application service and approval function. The subsystem allows for the electronisation and process-based support of the internal approval processes of public accounts and budgetary institutions currently operating on paper, the replacement of the forecasting system (TSH), the follow-up of the entire commitment process (appropriation, commitment, execution, payment) in an integrated system (IFMIS). — As a pilot system supporting local administration, an integrated accounting application based on the cooperation of departments will be set up, which will be introduced in the first instance for centrally managed appropriations (almost 400) (integrated with theIFMIS system) for the Treasury’s accounts. The central budget was HUF 8.2 billion (69 %) out of revenue execution of HUF 11.9 E in 2014, and HUF 4.9 billion (39 %) of the expenditure execution of HUF 12.7 E was the fulfilment of the centrally managed appropriations booked by the Treasury. In the accounting application, the cash and stock data of the centrally managed appropriations recorded by the Treasury and by external analysts are recorded in accordance with uniform accounting criteria. In the case of appropriations registered by the Treasury, it will be possible to record and electronically send/receive transfers and amendments to appropriations in a single system, as well as electronic processing of extracts. Cash flow data can be sorted from a single core data on a regulated workflow basis. The application allows the exchange of aggregated monthly paper-based data from analytical registries by submitting electronically and authentically (through the customer gateway) while ensuring strict logical checks (e.g. opening stock data, cash flow data, etc.). — In the joint analysis of the different IT systems, the task is to standardise and maintain synchronised core data and value sets in the source systems. Master Data Management (MDM) allows for the coordination of information in different systems