This paper explores the determinants of regional differences in interest rates based on a simple theoretical model of loan pricing. The model demonstrates how risks, costs, market concentration and scale economies jointly determine the bank's interest rates. Using recent data of the Indonesian...

Using administrative data on deposits and loans of every Norwegian with every Norwegian bank, we show that an existing deposit account makes a household more likely to hold deposits at the same bank later despite better alternatives and more likely to borrow there. Consistent with this, banks...