Laffer curve rates (for example, in the United States by the Congressional Budget Office). While the interaction between tax rates and tax revenue is generally accepted, the precise nature of this interaction is debated. In practice, the shape of a hypothetical Laffer curve for a given economy can only be estimated. The relationship between tax rate and tax revenue is likely to vary from one economy to another and depends on the elasticity of supply for labor, as well as various other factors. Even in the same economy, the characteristics of the curve could vary over time. Complexities such as progressive taxes
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.