On 13 July 2018, the Act of 1 March 2018 on Countering Money Laundering and Terrorist Financing (Journal of Laws of 2018, item. 723, hereinafter referred to as “the Act”) entered into force in Poland. The goal behind this regulation was the complete and correct transposition of Directive (EU) 2015/849 of the European Parliament and of the Council of 20 May 2015 on the prevention of the use of the financial system for the purposes of money laundering or terrorist financing. Certain provisions of the Act entered into force only after 18 months from the date of its announcement, i.e. 13 October 2019, and materially affected the operation of many businesses.