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
Notional Park in Arcadia, California by four lengths under jockey Corey Nakatani. Sent to the Fair Grounds Race Course in New Orleans, Louisiana in February, Notional scored a 2 length win in the Risen Star Stakes under jockey Robby Albarado in a race where favorite Circular Quay was seriously impeded as a result of a race accident. Notional came in a close second to Scat Daddy in the Florida Derby in his last prep before the Kentucky Derby. While he was set to run the Triple Crown races, Notional suffered a fracture of his front cannon bone during a workout at