In January 2021, EPA proposed updates and adjustments to the 2018 fees rule established under the Toxic Substances Control Act (TSCA). TSCA requires EPA to review and, if necessary, adjust the fees every three years, after consultation with parties potentially subject to fees. EPA proposed modifications to the TSCA fees and fee categories for fiscal years 2022, 2023 and 2024, and explained the methodology by which the proposed TSCA fees were determined. EPA proposed to add three new fee categories: A Bona Fide Intent to Manufacture or Import Notice, a Notice of Commencement of Manufacture or Import, and an additional fee associated with test orders. In addition, EPA proposed exemptions for entities subject to certain fee triggering activities; including: An exemption for research and development activities; an exemption for entities manufacturing less than 2,500 lbs. of a chemical subject to an EPA-initiated risk evaluation fee; an exemption for manufacturers of chemical substances produced as a non-isolated intermediate; and exemptions for manufacturers of a chemical substance subject to an EPA-initiated risk evaluation if the chemical substance is imported in an article, produced as a byproduct, or produced or imported as an impurity. EPA updated its cost estimates for administering TSCA, relevant information management activities and individual fee calculation methodologies. EPA proposed a volume-based fee allocation for EPA-initiated risk evaluation fees in any scenario where a consortium is not formed and is proposing to require export-only manufacturers to pay fees for EPA-initiated risk evaluations. EPA also proposed various changes to the timing of certain activities required throughout the fee payment process. However, in light of public comments, EPA has decided to issue a supplemental proposal and seek additional public comment on changes to the January 2021 proposal.