As of 1 January 2019, a legal obligation came into effect for all legal entities registered in the Commercial Register to notify the registry court with local jurisdiction of their beneficial owner at the level of a natural person. Other legal entities such as associations, contributory organisations, etc. will only be impacted by this obligation on 1 January 2021. Although the obligation to state the real owner may also appear to be superfluous in the case of legal entities that have a single natural person as the sole shareholder, these obligations also apply to these. The aforementioned obligation arose for legal entities in the context of the amendment of Act No. 253/2008 Coll., on Certain Measures Against the Legalisation of Proceeds from Crime and Terrorist Financing. The aim of the translated article is to present the basic fragments of the issue of legislative requirements and pitfalls in the field of registration of beneficial owners of legal entities and trust funds.