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 sulfide. While the supplemental notice is narrow in scope, the IRS and Treasury have requested

After a more than 26 year hiatus, on July 1, 2022, the Superfund chemical excise tax (the “Superfund Chemical Tax”) will again become effective. This excise tax, reinstated by the passage of the Infrastructure Investment and Jobs Act,[1] is imposed on manufacturers, producers, and importers of certain chemicals and chemical substances. As discussed below, the re-establishment of this tax may have significant financial, administrative, and operational impacts; thus, it is crucial that businesses potentially subject to this tax understand its applicability, obligations, and exceptions, for tax year 2022 and beyond.

Even for those who have dealt with the first iteration of this tax, there are many material differences in the resurrected tax regime, including the applicable tax rates on chemicals and the threshold for determining which chemical substances are taxable.