Super Finance Glossary Over 10,000 financial glossary terms... Browse by Letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Or Enter Search Term: By Author: All Sources Campbell Harvey Internal Revenue Service Finance Globe FDIC Snow Gold CFTC U.S. Census Bureau Search Tips Laffer Curve Source Laffer CurveDefinition: A curve conjecturing that economic output will increase if marginal tax rates are cut. Named after economist Arthur Laffer.