Systems, computer-implemented methods and computer program products for generating customized shopping lists for recurring purchases of the same item based upon item-level electronic transaction data. Item-level electronic transaction data is analyzed to determine purchase intervals of items and estimate when the consumer will purchase the items again. Segregated, customized shopping lists are generated such that shopping lists have identified items when it is estimated that the consumer will need to purchase the items again. Multiple shopping lists may be segregated by merchant such that consumers have two more different lists of items for different merchants for a given estimated date. For example, a consumer may be provided with a first shopping list for a grocery store such as SAFEWAY, a second shopping list for a warehouse club store such as COSTCO, and a third shopping list for a big box store or superstore such as TARGET.