IR-2022-132, June 24, 2022
WASHINGTON — The Internal Revenue Service announced today that it has prescribed tax rates for 121 taxable substances that are subject to the Superfund chemical excise tax imposed by section 4671(a) of the Internal Revenue Code (Code).
Taxable substances are those substances listed in either section 4672(a)(3) of the Code or Notice 2021-66. Substances may be added or removed from the list of taxable substances at a later date.