Both the EU and Turkish legislation apply the same criteria to the control of concentrations or mergers and acquisitions. For this reason, high level of harmonisation had already been achieved in the field of mergers and acquisitions. Moreover, owing to the amendment on the Turkish Competition Act through the Act dated 16.06.2020 and with number 7246, harmonisation level has been increased to a great extent. Particularly, with the amendment of Article 7, the ‘significant impediment of competition’ test used by the EU in the control of concentrations instead of the ‘dominant position’ test existing in the previous text of the provision is accepted. Secondly, with the introduction of structural remedies applied by the EU in addition to the behavioural remedies existing also in Article 9, the harmonisation process has almost been completed. However, there are certain developments triggering both systems to change their rules applied in the control of concentrations. In this respect, new economy shaped by the digitalisation, new trends of consumers, increasing concerns about data protection, and also Covid-19 pandemic and its economic consequences spreading all over the world may oblige the legal systems to take them into consideration together with turnover thresholds while controlling concentrations.