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Updated May 8, 2024

Trends and Proposals for Corporate Tax Revenue

U.S. corporate tax revenues have declined, relative to the
size of the economy, since the mid-1960s. Corporate tax
revenue as a percentage of gross domestic product (GDP)
fell from 3.9% in 1966 to approximately 1.6% in 2023. This
decline in corporate tax revenue is due to several factors.
Average tax rates have declined, primarily due to
reductions in the statutory rate and changes in depreciation.
The corporate tax base has also been reduced through
declining profitability (return on assets), increased use of
the pass-through organizational form for businesses, and
international profit shifting.
Whereas U.S. corporate tax revenue has decreased,
corporate tax revenue in other Organisation for Economic
Co-operation and Development (OECD) member countries
has, on average, increased. Average corporate tax revenue
collected by OECD countries has increased from 2.1% of
GDP in 1965 to 3.3% of GDP in 2021 (see Figure 1).
Figure I. Corporate Tax Revenue, as a Percentage of
GDP, 1965-2021
4 S
o b
Source: OECD Tax on Corporate Profits, https://data.oecd.org/tax/
tax-on-corporate-profits.htm, downloaded April 23, 2024.
Note: Tax on corporate profits includes taxes levied by all levels of
government.
Figure 1 tracks the differing trends in U.S. and OECD
corporate tax revenue over time. The United States
collected 1.8 times as much corporate tax revenue as the
OECD average in 1965 (as measured in shares of GDP).
Since 1981, however, U.S. corporate tax revenue as a
percentage of GDP has been less than the OECD average
(which includes the United States). In 2021, OECD average
corporate tax revenue as a percentage of GDP was about
twice as large as the U.S. corporate tax revenue as a
percentage of GDP.
Corporate Tax Proposals
President Biden's budget proposes an increase in the
amount of revenue raised by the corporate tax system by
about $2.6 trillion over the next 10 years. Several
legislative proposals would increase corporate taxes, in

some cases by altering the international tax structure. The
House-passed Build Back Better Act (BBBA; H.R. 5376)
would have raised around $800 billion in corporate taxes in
FY2022-FY2031, but that legislation did not advance. The
bill, renamed the Inflation Reduction Act (P.L. 117-169), as
enacted, imposed a minimum tax of 15% on book income
of large corporations and a 1% tax on stock buybacks.
Raising the Corporate Tax Rate and Revising the
Mn mum Tax and Stock Buyback Tax
The corporate tax rate is currently 21%, levied as a flat rate,
reduced from a top marginal rate of 35% before 2018 by the
2017 tax law commonly known as the Tax Cuts and Jobs
Act (TCJA; P.L. 115-97). President Biden has proposed an
increase to 28% with a revenue gain of $1.3 trillion for
FY2025-FY2034. S. 4098 (Sanders) and H.R. 7933
(Schakowsky) propose a graduated corporate rate with most
corporate income taxed at 35%. President Biden has also
proposed to raise the minimum tax rate on book income to
21% and to increase the stock buyback tax rate to 4%. S.
413 (Brown) and H.R. 5953 (Sykes) would raise the stock
buyback tax rate to 4%. S. 1559 (Barrasso) and H.R. 3210
(Arrington) would repeal the minimum tax and H.R. 515
(Kustoff) would repeal the stock buyback tax.
Increasing the Minimum Tax on Foreign Source
Income (GILT )
President Biden's budget proposals and several bills in the
118th Congress would increase the minimum tax on foreign
source income, known as the tax on Global Intangible Low
Taxed Income or GILTI, enacted by TCJA 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 tax rules.) Under current law, GILTI targets
intangible income by allowing a deemed deduction equal to
10% of tangible assets. Any remaining income is allowed a
deduction of 50% (37.5% after 2025) and then taxed at
21%, leading to a tax rate of 10.5% (13.125% after 2025).
Foreign oil extraction income is excluded and not subject to
any U.S. tax.
Current law allows credits for foreign taxes paid; the credits
are limited to U.S. taxes due on foreign-source income, but
are imposed on an overall basis across countries. This
treatment allows for the use of credited taxes paid in high-
tax countries to offset U.S. income tax due in low-tax
countries. For GILTI, the credit is limited to 80% of foreign
taxes paid.
The Biden Administration's budget would increase the tax
rate to 21%, and four bills in the 118th Congress-S. 357
(Whitehouse), S. 4098, H.R. 884 (Doggett), and H.R.
7933-would tax income at full rates. All of the proposals
would eliminate the deemed deduction for tangible assets

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