On 1 July 2021,European Banking Authority (EBA) issued an Opinion concerning the implementation of the Investment Firms Regulation (IFR) and Investment Firms Directive (IFD), which entered into force on June 26. The IFR/IFD classify investment firms according to their business model and size, the latter of which is benchmarked on various threshold. For most investment firms, sufficient clarity already exists with regards to the prudential regime, which applies to them. However, in a few cases, especially for investment firms of third country groups, the Opinion provides guidance on the actions to be taken in case of uncertainty on whether these investment firms should apply for an authorisation as a credit institution in the absence of the delegated act establishing the methodology for the calculation of the highest threshold (the EUR 30bn threshold), on which the EBA has currently opened a second public consultation.