The Left’s Position on the Laffer Curve and Dynamic Scoring: Being Exactly Wrong Is Better than Being Inexactly Right

Dan Mitchell's avatarInternational Liberty

Since I’m a big advocate of the Laffer Curve, that means I favor dynamic scoring. This is the common-sense observation that you can’t figure out the effect of tax changes on revenue without first estimating the impact on taxable income.

And I’ve shared some very persuasive data and analysis in favor of the Laffer Curve and dynamic scoring.

The huge increase in taxes paid by upper-income taxpayers after Reagan slashed the top income tax rate.

The fact that the overwhelming majority of CPAs believe in significant feedback effects.

Even left-wing economists admit that you lose revenue if tax rates get too high.

International bureaucracies even admit that there are “Laffer Curve” limits that make some tax hikes self-defeating.

Notwithstanding all this evidence, we have a system in Washington that is based on static scoring, which simplistically assumes a linear relationship between tax rates and tax revenue.

The Joint Committee…

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