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November 29, 2021

Superfund Tax Legislation in the 117th Congress

Decades of industrial and commercial activities involving
various chemicals resulted in environmental contamination
at thousands of sites in the United States, including federal
facilities that served national defense and other purposes.
Some of this contamination occurred prior to environmental
regulation. Allocation of financial responsibility for
remediating environmental contamination has been a long-
standing issue. At the federal level, the Comprehensive
Environmental Response, Compensation, and Liability Act
of 1980 (CERCLA, P.L. 96-510) established the liability of
certain categories of potentially responsible parties (PRPs)
for the costs of remediating hazardous substances released
into the environment, natural resource damages, and related
federal public health studies. CERCLA authorized the
Hazardous Substance Superfund Trust Fund to finance the
remediation of sites without financially viable PRPs to
fulfill their liability. The U.S. Environmental Protection
Agency (EPA) administers and oversees the remediation of
sites prioritized for federal involvement under the
Superfund program, in coordination with the states in which
the sites are located. Other federal laws apply to oil spills
and petroleum contamination from underground tanks not
covered under CERCLA. States also have established
environmental remediation programs under their own laws.
Under CERCLA and subsequent law, Congress established
a three-part tax system to finance the Superfund Trust
Fund: (1) an excise tax on crude oil and imported petroleum
products, (2) an excise tax on certain domestic chemical
feedstocks and imported chemical derivatives, and (3) a
special environmental tax on corporate income. These taxes
accounted for most of the receipts for the Superfund Trust
Fund until the taxing authority expired at the end of 1995.
Since the taxes expired, the Superfund Trust Fund has
primarily been financed with transfers from the General
Fund of the U.S. Treasury.
Legislation to reauthorize Superfund taxes has been
introduced in every Congress since 1995, including the
117th Congress. The President's FY2022 budget request
also proposes to reauthorize the Superfund excise taxes.
Enacted November 15, 2021, the Infrastructure Investment
and Jobs Act (P.L. 117-58) reauthorizes the Superfund
chemicals excise tax through December 31, 2031, at double
the rates that were in effect in 1995. As passed by the
House on November 19, 2021, the Build Back Better Act
(H.R. 5376, also referred to as the reconciliation bill) would
permanently reauthorize the Superfund petroleum excise
tax, increase the rate in 2022, and annually adjust it for
inflation. The effective date of these tax provisions in both
P.L. 117-58 and H.R. 5376 is July 1, 2022.
A brief history of Superfund taxes, eligible uses of receipts,
tax reauthorization issues, and Superfund tax legislation in

the 117th Congress are discussed further below. For more
information on the history of Superfund taxes and
CERCLA, see CRS Report R41039, Comprehensive
Environmental Response, Compensation, and Liability Act:
A Summary of Superfund Cleanup Authorities and Related
Provisions of the Act, by David M. Bearden; and CRS In
Focus IF11790, Liability Under the Comprehensive
Environmental Response, Compensation, and Liability Act
(CERCLA), by Kate R. Bowers.
Superfund Tax History
As enacted in 1980, CERCLA authorized Superfund excise
taxes on crude oil, imported petroleum products, and
domestic chemical feedstocks. Congress chose 42
feedstocks from which many other chemicals were made, as
a matter of efficiency to tax chemical production. The
Superfund Amendments and Reauthorization Act of 1986
(P.L. 99-499) expanded the Superfund chemicals excise tax
to include imported chemical derivatives and added the
special environmental tax on corporate income. Congress
based the excise taxes on the premise that petrochemicals
from crude oil, and other commercial chemicals, were
common sources of contamination. The tax on corporate
income applied to any corporation that met the income
threshold regardless of whether its activities involved
hazardous substances. Subsequent laws through the 101
Congress reauthorized Superfund taxes until the end of
1995. Prior to expiration, Superfund taxes were
* an excise tax on crude oil and imported petroleum
products at a rate of 9.7 cents per barrel paid by U.S.
refineries receiving crude oil and importers of petroleum
products for consumption, use, or warehousing;
* an excise tax on 42 chemical feedstocks paid by the
manufacturers, and imported chemical derivatives paid
by the importers, at a rate that varied from $0.22 per ton
to $4.87 per ton depending on the substance; and
* a special environmental tax on corporate income at the
rate of 0.12% of alternative minimum taxable income in
excess of $2 million annually.
Superfund tax receipts were fully expended by the end of
FY2003. General Fund transfers have since financed most
of the annual appropriations from the Superfund Trust
Fund. In addition to these transfers, the Superfund Trust
Fund receives revenue from cost recoveries from PRPs,
fines and penalties for violations of CERCLA, and interest
on the balance of the trust fund. Appropriations from the
trust fund have been roughly $1.2 billion annually for the
past several fiscal years. The Tax Increase Prevention Act
of 2014 (P.L. 113-295) repealed the expired Superfund
special environmental tax on corporate income. The

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