Are differences in local banking development long-lasting? Do they affect long-term economic performance?
I answer these questions by relying on an historical development that occurred in Italian cities during the 15th
century. A sudden change in the Catholic doctrine had driven the Jews toward money lending. Cities that
were hosting Jewish communities developed complex banking institutions for two reasons: first, the Jews were
the only people in Italy who were allowed to lend for a profit and, second, the Franciscan reaction to Jewish
usury led to the creation of charity lending institutions, the Monti di Pietá, that have survived until today and
have become the basis of the Italian banking system. Using Jewish demography in 1500 as an instrument, I
provide evidence of (1) an extraordinary persistence in the level of banking development across Italian cities (2)
large effects of current local banking development on per-capita income. Additional firm-level analyses suggest
that well-functioning local banks exert large effects on aggregate productivity by reallocating resources toward
more efficient firms. I exploit the expulsion of the Jews from the Spanish territories in Italy in 1541 to argue
that my results are not driven by omitted institutional, cultural and geographical characteristics. In particular,
I show that, in Central Italy, the difference in current income between cities that hosted Jewish communities
and cities that did not exists only in those regions that were not Spanish territories in the 16th century
