Laffer curve in tax rates to increase revenue, the current tax rate would need to be higher than the revenue maximizing rate. In 2007, Laffer said that the curve should not be the sole basis for raising or lowering taxes. Supply-siders argue that in a high tax rate environment, lowering tax rates would result in either increased revenues or smaller revenue losses than one would expect relying on only static estimates of the previous tax base. This led supply-siders to advocate large reductions in marginal income and capital gains tax rates to encourage greater investment, which would produce more supply. Jude Wanniski
Laffer curve Jude Wanniski, who was also present at the meeting. The basic concept was not new; Laffer himself notes antecedents in the writings of the 14th-century social philosopher Ibn Khaldun and others. Laffer does not claim to have invented the concept; he notes that there are antecedents, including in the "Muqaddimah" by 14th-century Tunisian scholar Ibn Khaldun, and in the writings of John Maynard Keynes. It was not until the 1970s that Laffer's name began to be associated with the idea. The term "Laffer curve" was reportedly coined by Jude Wanniski (a writer for "The Wall Street Journal") after a 1974