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Internal Revenue Service › Tax Liability › Superfund

The United States Internal Revenue Service is a bureau of the United States Department of the Treasury. The IRS is charged with collecting revenue and enforcing the Internal Revenue Code.  
Bergeson & Campbell, P.C.

IRS Modifies List of Taxable Chemical Substances to Include 21 Chemicals

Bergeson & Campbell, P.C. on

On August 4, 2025, the Internal Revenue Service (IRS) published a notice of determinations that modifies the list of taxable substances to include the following 21 substances: polyphenylene sulfide, cellulose acetate (degree...more

Proskauer - Tax Talks

Recent Updates from the IRS and Treasury on the Superfund Chemical Tax

Proskauer - Tax Talks on

I. Executive Summary - On February 15, 2024, the IRS and Treasury issued a supplemental notice to a prior notice from December 2022, to correct a petition requesting that the Superfund Chemical Tax apply to polyphenylene...more

BakerHostetler

IRS Provides Initial and Limited Guidance on Newly Reinstated ‘Superfund Tax’

BakerHostetler on

Last month, the IRS published Notice 2021-66, issued in response to the Infrastructure Investment and Jobs Act’s (Jobs Act) reinstatement of the previously expired “Superfund Tax”—an excise tax imposed on manufacturers,...more

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