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Updated June 21, 2021

Trends and Proposals for Corporate Tax Revenue

Since the mid-1960s, U.S. corporate taxrevenues have
declined, relative to the size of the economy. Corporate tax
revenue as a percentage of gross domestic product (GDP),
which was 3.9% in 1965, has fallen to approximately 1.0%
in 2020. The decline in corporate taxrevenue since 1965 is
due to several factors. Averagetaxrates have declined,
primarily due to reductions in the statutory rate and changes
in depreciation. The corporate taxbasehas also been
reduced through declining profitability (return on assets),
increaseduse of the pass-through organizational formfor
businesses, and international profit shifting.
Whereas U.S. corporate taxrevenue has decreased,
corporate taxrevenue in other Organis ation for Economic
Co-operation and Development (OECD) member countries
has, on average, increased. Since 1965, average corporate
taxrevenue collectedby OECD countries has increased
from2.1% of GDP to 3.1% of GDP in 2018 (see Figure 1).
OECD data indicate that U.S. corporatetaxrevenue
(including corporate taxrevenue collected by state andlocal
governments) fell from 3.9% to 1.0% during the same time.
Figure 1. Corporate Tax Revenue, as a Percentage of
GDP, 1965-2018
4.5
0
s                         a
Unted States  OECD Ave  ge
Source: OECD Tax on Corporate Profits, https://data.oecd.org/tax/
tax-on-corporate-profits.htm, down loaded March 31,2021.
Note: Tax on corporate profits includestaxes levied byall levels of
govern ment.
Figure 1 also shows that the United States collected 1.8
times as much corporate taxrevenue comparedto the
OECD average in 1965. Since 1981, however, U.S.
corporate taxrevenue as a percentage of GDP has been les s
than the OECD average (which includes the United States).
In 2018, OECD average corporate taxrevenue as a
percentage ofGDP was 3.1 times U.S. corporate tax
revenue as a percentage of GDP.
Corporate Tax Proposals
Pres ident Biden's budget proposes an increase in the
amount ofrevenue raised by the corporate taxsystemby

about $2 trillion over the next 10 years. Several legislative
proposals in the 117th Congress would increase corporate
taxes, in most cases by altering the internationaltax
structure.
Raising the Corporate Tax Rate
The corporate taxrate is currently 21%, levied as a flat rate,
reduced froma top marginalrate of 35% before 2018 by the
2017 tax law commonly known as theTaxCuts and Jobs
Act (TCJA; P.L. 115-97). President Biden has proposed an
increase to 28% with a revenue gain of $858 billion for
FY2022-FY2031. Senator Sanders has proposed (S. 991) a
graduated corporate rate with most corporate income taxed
at 35%. President Biden has alsoproposed an alternative
minimum taxbased on financial or book income for
corporations with more than $2billion in earnings.
Increasing the Min imum Tax on Foreign Source
Income (GILTi)
Severalbills, including S.20 (Klobuchar), S.714
(Whitehouse), H.R. 1785 (Doggett), and S.991 (Sanders)
would increasethe minimumtaxon foreign source income,
known as the taxon Global Intangible Low Taxed Income,
or GILTI, enacted in 2017. (See CRS Report R45186,
Issues in International Corporate Taxation: The 2017
Revision (P.L.115-97), by Jane G. Gravelle and Donald J.
Marples for a discussion of international taxrules .) Under
current law, GILTI targets intangible income by allowing a
deemed deduction equalto 10% of tangible as sets. Any
remaining income is allowed a deduction of 50% (37.5%
after 2025) and then taxed at 21%.
The U.S. international taxsystemallows for credits for
foreign taxes paid. Credits are limited to U.S. taxes due on
foreign-source income, butimposed on an overallbasis
across countries. This allows forcross-crediting, orthe
use of credited taxes paid in high-taxcountries to offset
U.S. income tax due in low-tax countries. For GILTI, the
credit is limited to up to 80% offoreign taxes are paid.
The Biden Administration budget proposals and four bills
in the 117th Congress-S. 20, S. 714, H.R. 1785, and S.
991-would make GILTI fully taxable by eliminating the
deduction for tangible investment and eliminating the 50%
deduction. All but S. 991 would impose a 21% rate (the
current-law rate); S. 991 would impose a rate of 35%. The
Biden Administration plan would allow a deduction to set
the GILTI tax rate at 21% rather than 28%.
These proposals appear to be motivated, in part, by
concerns that the exemption for tangible income might
encourage the movement ofinvestment abroad. Some
propo sals would increase the credit amount for GILTI to
100% (S. 714, H.R 1785, and S.991, but not S.20 or the

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