The IRS published a Notice of Proposed Rulemaking (with the Department of the Treasury) relating to the Superfund excise taxes imposed on certain chemicals and certain imported substances; Rev Proc 2023-20 modifying the rules for refund claims related to exports of taxable chemicals under IRC Sec. 4662(e); and Notice 2023-28 extending the temporary penalty relief provided in IRS Notice 2022-15 related to deposits for Superfund chemical taxes. This Multistate Tax Alert summarizes these significant
Source Deloitte
