Economic theories explain the phenomena and processes occurring in the economy in different ways. However, the views of many historians of economic thought are converging in the role of credit in economic and social life. According to Keynes, the bank loan is a factor that stimulates domestic demand, increases the purchasing power of households. It enables producers to increase production, by increasing sales of manufactured goods. Schumpeter, for a change, in his deliberations dealt with the importance of lending for entrepreneurs and its impact on economic development. In his opinion, loans for economic purposes are creating new purchasing power and enable access to the stream of goods. The role of bank credits in the economy is significant due to the fact that they: - allow adjusting the financial needs of households to their incomes, - create an additional source of funding for the purchase of goods, - improve access to capital for financing business, - finance innovations, - contribute to the elimination of inefficient market traders and the reallocation of freed capital resources to more efficient spheres.