The Environmental Protection Agency (EPA) is finalizing amendments to the 2018 final rule that established fees for the administration of the Toxic Substances Control Act (TSCA). Specifically, EPA is finalizing changes to the fee amounts and EPA's total costs for administering TSCA; exemptions for entities subject to the EPA-initiated risk evaluation fees; exemptions for test rule fee activities; modifications to the self-identification and reporting requirements of EPA-initiated risk evaluation and test rule fees; modifications to EPA's proposed methodology for the production-volume- based fee allocation for EPA-initiated risk evaluation fees in any scenario in which a consortium is not formed; expanded fee requirements to companies required to submit information for test orders; modifications to the fee payment obligations of processors subject to test orders and enforceable consent agreements (ECA); and extended timeframes for certain fee payments and notices.