The main objective of this study is to compare the efficiency of the banking systems of the Eastern Partnership countries - the Republic of Moldova, Ukraine, and Georgia - and its impact on economic growth in these countries. The study analyzed the data from the central banks' reports of these three countries. Banking efficiency assessed through two methodologies: financial and econometric indicators that together allow for a complex picture for the benchmarking of the banking systems of the Eastern Partnership countries. Efficiency assessment through financial indicators included some parameters. In order to assess the efficiency of banking systems, using the econometric methods, the intermediation approach, which looks at the bank as an intermediary of financial services, assumes that banks collect funds for deposits with labor and capital and converts them into loans and other assets. The efficiency of the banking system was determined using the DEA assessment method. This study concludes that the analysis highlighted the banking systems of the countries with the most significant problems in this respect. In the Ukrainian banking system and the Moldovan banking system, there are more severe deficiencies. On the other hand, Georgia, due to limited resources in the national economy, has focused on developing the banking sector on foreign investors and on attracting remittances in the banking sector and as a result and has achieved remarkable results in this respect.