Abstract: The purpose of this article is to analyze the
degree of concentration in the banking market in EU member
states as well as to determine the impact of the length of EU
membership on the degree of concentration. In that sense
several analysis were conducted, specifically, panel analysis,
calculation of correlation coefficient and regression analysis of
the impact of the length of EU membership on the degree of
concentration. Panel analysis was conducted to determine
whether there is a similar trend of concentration in three
groups of countries - countries with a low, moderate and high
level of concentration. The conducted panel analysis showed
that in EU countries with a moderate level of concentration,
the level of concentration decreases. The calculation of
correlation showed that, to some extent, with other influential
factors, the length of EU membership negatively affects the
market concentration of the banking market. Using the
regression analysis for investigation of the influence of the
length of EU membership on the level of concentration in the
banking sector in a particular country, the results reveal that
there is a negative effect of the length in EU membership on
market concentration, although it is not significantly influential
variable.