Simplified Taxation System: A Retrospective of Causal Relations of Threats to Ukraine's Tax Security

The Constitution of Ukraine regulates only one, single taxation system. The Constitution of Ukraine does not mention the plurality of taxation systems. However, by the Decree of the President of Ukraine dated 03.07.1998 No. 727/98, another taxation system was introduced – a simplified one, which was intended to facilitate business, in particular for small and medium-sized businesses. At the same time, in modern conditions, the simplified taxation system raises concerns about its impact on the tax security of the state. Tax security is a component of the country's economic security and provides for timely, full and stable receipt of tax payments to budgets of all levels. However, there is an opinion that the current mechanisms for the functioning of the simplified taxation system create certain gaps in the taxation system, which may contribute to tax evasion, reduce fiscal efficiency and threaten the stability of the budget system. In this regard, the need for a systematic review of the principles of the functioning of the simplified taxation system is becoming more urgent in order to ensure its compliance with the principles of tax security, which may include reforming or even eliminating this system.