In Iames v. Commissioner, No. 16-1154, the US Court of Appeals for the Fourth Circuit upheld the US Tax Court’s ruling that once a taxpayer has unsuccessfully challenged his tax liability in a preassessment hearing before the Internal Revenue Service (IRS) Office of Appeals, he is precluded from challenging his tax liability in a collection due process (CDP) hearing under Internal Revenue Code (IRC) Section 6330.

IRC Section 6330, enacted by Congress to protect taxpayers from abusive or arbitrary collection practices, provides a set of procedural safeguards for taxpayers facing a potential levy action by the IRS: notice, an administrative hearing and judicial review. More specifically, before collecting a delinquent tax through a levy on a taxpayer’s property, the IRS must notify the taxpayer at least thirty days in advance of his right to an administrative hearing before the IRS Office of Appeals. IRC Section 6330(a) and (b). After the Office of Appeals makes its determination, the taxpayer may then petition the Tax Court for judicial review. IRC Section 6330(d)(1).

In general, the taxpayer may raise “any relevant issue relating to the unpaid tax or the proposed levy” at the CDP hearing. IRC Section 6330(c)(2)(A). There are, however, certain restrictions as to the circumstances under which a taxpayer may bring a CDP challenge. Under IRC Section 6330(c)(2)(B), a taxpayer can dispute the existence or amount of the underlying tax liability but only so long as he “did not otherwise have an opportunity to dispute such tax liability.”


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