Interest rate spreads: Different stories for different types of loan

The paper studies the determinants of the interest rate spreads in Estonia, a country that stands out among European countries for its wide spreads and highly concentrated banking sector. Four distinct credit markets are considered for housing loans, consumer loans, long-term corporate loans and short-term corporate loans. The paper uses quarterly panel data from 2000Q1–2021Q1. It uses a two-stage approach to disaggregate the observed spread into a component determined by the bank-specific factors and a component determined by the market-specific factors, which is called pure spread. For each of the two components, we find substantial differences in the determinants of the spreads across different types of loan. While credit risk is important for long-term corporate and housing loans, inverse efficiency is significant in the segment of short-term loans. The contribution of market concentration to the pure spread is larger for household loans than for corporate loans.