On Dec. 13, 2018, the Internal Revenue Service and the Treasury Department issued proposed regulations (the Proposed Regulations) that provide certain guidance and relief from the regulatory burden associated with Sections 1471 through 1474 of the Internal Revenue Code (IRC), commonly referred to as Foreign Account Tax Compliance Act (FATCA), as well as with respect to withholding under Chapter 3 of the IRC (Withholding of Tax on Nonresident Aliens and Foreign Corporations). The Proposed Regulations also provide guidance on the definition of an “investment entity,” modify certain due diligence requirements of withholding agents, and revise certain provisions relating to refunds and credits of amounts overwithheld. This GT Alert summarizes the provisions of the Proposed Regulations.