Despite being opposed to statism in industry and trade, Grabski was at the same time a supporter of strong state banking.

Bank Gospodarstwa Krajowego, in accordance with its statutory tasks, from the beginning of its existence financially supported the development of Polish economy.

Starting from 1936, BGK was included in realization of state investment plan of creating the Central Industrial Region.

At the turn of the 1920s and 1930s, BGK became one of the biggest banks of inter-war Poland and served as the primary participant in the economic restructuring process.

In 1989, BGK resumed it operation as a state-owned bank and as such acted primarily as issue agent for Treasury bonds, offered for the first time in several decades.

In collaboration with other financial institutions, BGK improves access to funding for businesses, which translates into lower unemployment and stronger GDP growth.

Its mission is to support social and economic growth of Poland and the public finance sector in the performance of its tasks.

It is composed of Austria, Bulgaria, Croatia, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia, and Slovenia.