News & Analysis as of

Toxic Chemicals Superfund Chemicals

Bergeson & Campbell, P.C.

IRS Modifies List of Taxable Chemical Substances to Include 21 Chemicals

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

BakerHostetler

Overview of Proposed Regulations Superfund Taxes

BakerHostetler on

On March 29, the IRS and U.S. Treasury Department (Treasury) published proposed regulations regarding the recently reinstated Superfund chemical taxes (Proposed Regulations) and set a May 28 deadline for comments. The...more

Eversheds Sutherland (US) LLP

The Superfun(d) continues! IRS issues comprehensive Superfund chemical excise tax guidance

On March 27, 2023, the Treasury Department (Treasury) and the Internal Revenue Service (IRS) issued much anticipated proposed regulations, REG-105954-22 (Proposed Regulations), and additional guidance in the form of Revenue...more

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