Our friend and economic compatriot, Dan Mitchell, called our attention to a new study by the revenue-estimators at the Joint Tax Committee, who after all these years now admit that, yes, Virginia, there is a Laffer Curve.
This is the agency of bean counters whose models have for decades consistently overstated taxes collected from tax rate increases, and taxes lost from tax rate cuts. They once concluded that a 100% income tax rate would boost revenues. But their new study acknowledges a Laffer Curve effect:
The Laffer curve peaks at the revenue-maximizing top tax rate, where revenue losses from behavioral responses offset revenue gains from a higher tax rate. Prior studies, however, largely overlook the Laffer curve's shape...
We show that modeling distinct tax bases more accurately and incorporating these interactions lowers the revenue-maximizing top tax rate and the associated revenue gains, yielding "flat" Laffer curves. Over this flat region, increasing the top tax rate raises relatively little revenue.
Quick, someone alert Bernie Sanders and AOC. Under most scenarios, a tax rate above 50% to 55% starts to lose revenues. And tax rates much lower than that reduce economic growth and incomes.