Net Interest Margin for Banks in Iowa (DISCONTINUED) was 3.41% in July of 2020, according to the United States Federal Reserve. Historically, Net Interest Margin for Banks in Iowa (DISCONTINUED) reached a record high of 5.50 in January of 1994 and a record low of 3.41 in July of 2020. Trading Economics provides the current actual value, an historical data chart and related indicators for Net Interest Margin for Banks in Iowa (DISCONTINUED) - last updated from the United States Federal Reserve on March of 2024.