The article presents the results of surveys carried out by the Institute of Home Market and Consumption, concerning the processes of domestic trade concentration in the period of stagnation of the Polish economy. Generally speaking, the survey’s results reveal a slowdown in the concentration processes, due to the deteriorating economic situation of enterprises, to a fall in investment outlays and to capital-intensive investment in trade. Nevertheless, the analysis of particular manifestations and forms of concentration indicates that these processes are still going on. This is particularly apparent in reference to the initiated stage of mergers and acquisitions within the framework of the continuing capital concentration on the market of fast moving consumer goods, and in the case of expans of retail centres.