An orientation in the Czech and European tax systems is not simple, but our paper’s task is an identification of its internal threats for continual flows disturbing of the funds. The security of financial cycle continuity in the public budget system, respectively in the Czech budgetary systems is a complicated process at all levels. The management of financial flows securing the continuity in the Czech Republic, as well as in other European Community countries, they form the common basis for the finance flows into the European Union‘s budget. The finance and security go hand in hand, as any measures, at any levels, aim to minimize diversification of risk and hence to offset threats that could put the principles of the funding system at risk. The aim of this paper is, on dynamic model map of major financial flows, to outline the entities and threats, which can negatively affect the financing cycle in real time in the budgetary systems in legislative frames of Czech and European countries. The factors and risks of becoming threats in real-time processes under given conditions and circumstances, need to be continuously identified, monitored, audited, analyzed, evaluated, investigated, and subsequently eliminated. The exquisite instrument, for the achievement of this paper's aims, is the application of special modelling and simulation methodology for crisis scenarios - the DYVELOP method (Dynamic Vector Logistics of Processes).