The primary aim of was to propose an innovative methodology for measuring an institution's tendency towards corrupt behaviour and then use this methodology to investigate the level of corruption in the public administrations of the capital cities of the Visegrad 4 countries (CZ, SK, HU, PL). A comparative survey Index 4 was carried out in the capitals focusing on public procurement, internal audits, ethical codexes,conflict of interest and access to information. The results of the survey can be downloaded at http://www.transparency.cz/index.php?lan=cz&id=2500. The research into the level of corruption in the public administrations of the capital cities of the V4 served as a tool for putting pressure on political representatives. The project was a continuation of the efforts made in the project "A Corruption-Free Town Hall""."