Laffer curve at an intermediate rate of taxation, and then falls again to zero revenue at a 100% tax rate. However, the shape of the curve is uncertain and disputed among economists. Under some assumptions, such as revenue being a continuous function of the rate of taxation, the maximum illustrated by the Laffer curve is a result of Rolle's theorem, which is a standard result in calculus. One implication of the Laffer curve is that reducing or increasing tax rates beyond a certain point is counter-productive for raising further tax revenue. A hypothetical Laffer curve for any given economy can only be
Arthur Laffer on the "Board of Scholars" of the American Legislative Exchange Council (ALEC). Laffer was one of four economists who acted as advisors to Donald Trump's successful 2016 campaign for the presidency of the United States. Laffer was born in Youngstown, Ohio, the son of Marian Amelia "Molly" (née Betz), a homemaker and politician, and William Gillespie Laffer, a president of the Clevite Corporation. He was raised a Presbyterian, and graduated from University School high school in 1958. Laffer earned a B.A. in Economics from Yale University (1962) and an M.B.A. (1965) and a Ph.D. in Economics (1972) from Stanford University.