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179 IRET Congressional Advisory 1 (2004)

handle is hein.taxfoundation/iretcgadv0176 and id is 1 raw text is: INSTITUTE FOR RESEARCH ON THE ECONOMICS OF TAXATION
IRET is a non-profit 501 (c)(3) economic policy research and educational organization devoted to informing
the public about policies thait will promote growth and efficient operation of the market economy.

August 31, 2004

Advisory No. 179

CONGRESSIONAL BUDGET OFFICE STUDY SHOWS TAX CUTS
HELPING ALL, INCLUDING THE MIDDLE CLASS

The Congressional Budget Office (CBO) has
issued a study1 examining how the 2001, 2002, and
2003 tax cuts2 altered effective
federal tax rates on households
of various income levels. The   CBO's main
study was undertaken at the    three pieces o'
request   of  the   ranking     t
Democrats     on    several         eief to p
Congressional   committees
(Senate  Budget Committee,
Senate  Finance  Committee,
House Budget Committee, House Ways and Means
Committee, and Joint Economic Committee).

CBO's conclusions have been misrepresented in
many media accounts. According to a number of
news stories, CBO found evidence that the 2001,
2002, and 2003 tax acts have squeezed middle-class
taxpayers. Actually, CBO's main finding is that the
three pieces of legislation provide tax relief to people
at all income levels, including the middle class.
The first part of this paper will describe the CBO
study's main findings, and explore some noteworthy
results the study uncovered that have received little
attention in the press. The second part of this paper
will examine fundamental problems with the type of
distributional analysis CBO was asked to perform.
Such analyses are not reliable and are poor guides
when setting public policy.
I. CBO's Findings on the Impact of the Tax Cuts
CBO presents projected tax rates and tax shares
for each twenty percent of households (quintiles) in
the income distribution under old (2000) tax law

through 2014. It also shows tax rates and tax shares

for each quintile

finding is that the
f' legislation proide
eople ait all income
ig the middle class.

the three Acts

due to the 2001, 2002, and 2003 tax
cuts as they are phased in and
-   then phased out between 2001
and 2011, and any residual
effects  through  2014.   It
displays the differences between
the two sets of tax rates and tax
shares as the consequence of
.   the tax reductions. (The CBO's
description of the provisions of
is excellent, and the graphical

depiction of their effective dates is highly intelligible
and quite clever.)
The rich pay most of the income tax and face
the highest tax rates.
The CBO study finds, as has much previous
research, that federal income tax liabilities rise
sharply with income. CBO estimates that, in 2004,
the top 1% of the income distribution will pay almost
one-third of federal income taxes and the top 10%
will pay two-thirds. Meanwhile, the bottom 40% will
have negative income taxes, that is, they will receive
money from the government through the income tax
system.3
Average income tax rates (income taxes as a
percent of income) also are highly skewed. CBO
estimates that, in 2004, the average income tax rate
will rise from -5.7% for the bottom 20% of
households  (i.e, they  get money   from   the
government), to 3.5% for the middle 20% of
households, to 14.2% for the top quintile, including
19.7% for the top 1%.4 (CBO uses an expanded

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