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1 Scott Hodge, et al., Using Dynamic Analysis Makes Tax Reform 30 Percent Less Challenging 1 (2013)

handle is hein.taxfoundation/taxfaaec0001 and id is 1 raw text is: ort

August 2013
No. 210

Using Dynamic Analysis Makes Tax
Reform 30 Percent Less Challenging

Led by Chairman Dave Camp (R-MI),
the House Ways and Means Committee
is developing a plan to dramatically
simplify the tax code, eliminate numerous
tax preferences, and cut individual and
corporate tax rates. By most accounts, the
plan would cut the top corporate tax rate
to 25 percent, reduce the highest individual
tax brackets to 25 percent, and reduce the
15 percent individual rate to 10 percent.
Camp has promised that the plan would be
revenue neutral, meaning that broadening
the tax base and eliminating numerous tax
preferences would offset revenue losses from
the rate cuts.
In an effort, no doubt, to illustrate the
enormity of Camp's task, Congressman
Sander Levin (D-MI), the ranking
Democrat on Ways and Means, recently
asked the Joint Committee on Taxation
UCT) to estimate the revenue losses
associated with such a tax rate cut plan.
JCT's estimate: more than $5 trillion in lost
revenues over ten years.
Many tax reform advocates may be
unsettled by the prospect of eliminating

popular tax preferences to offset $5 trillion
in lost revenues. Indeed, finding enough
loopholes to offset just the corporate rate
cut alone may be nearly impossible on a
static basis. The JCT estimated that the
average cost of cutting the corporate rate
would be almost $130 billion annually.
Making up this amount would require
eliminating nearly everything currently
listed as a corporate tax preference in the
tax code.
Daunting as this may seem, it is important
to understand that JCT's analysis is
conducted on a conventional, or static,
basis, which operates on the unrealistic
assumption that these tax rate cuts
have no effect on work and investment
decisions or on the overall level of GDP.
Had Congressman Levin asked JCT to
use a more dynamic model, he might
have learned that the actual cost of such a
plan is nearly 30 percent smaller than it is
estimated to be on a static basis. Thus, the
amount of base broadening that is needed
to make the plan revenue neutral is far less

Key Findings
* The revenue estimates produced by the Joint Committee on 1Taxation overstate the difficulty of paying for lower
individual and corporate tax rates.
*   Dynamic analysis shows that cutting individual tax rates (as is being considerdJ by Ways and Means) is 21 percent
less costly than the static estimate producCJ by 1JCT. Cutting corporate tax rates would bC 59 percent less costly.
Combined, these tax cuts would bc 30 less costly than a static estimate.
*   CLUting individual and corporate tax rates together would boost ;DP by 4.74 percent, increase the capital stock by
11.5 percent, and could increase the number of full-time equivalent jobs by 5.2 million. The average increase in after-
tax income across all AT ranges is 7.57 percent.

By Scott Hodge,
Stephen Entin, &
Michael Schuyler

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