Do banks matter for growth and how? This paper examines the effects of national banks in the United States from 1870–1900. I use the discontinuity in entry caused by a large minimum size requirement to identify the effects of banking. For the counties on the margin between getting a bank and not, gaining a bank increased production per person by 10%. National banks in rural areas improved agriculture over manufacturing, moving counties towards geographic comparative advantage. Since these banks made few long-term loans, the evidence suggests that the provision of working capital and liquidity matter for growth.
Boston College Department of Economics