Section 47-4312 - Protest of assessment(a) Unless otherwise provided in this title, before a final assessment of a deficiency, interest, or penalties against a person, the Mayor shall send the person a proposed assessment. No later than 30 days after the proposed assessment is sent, the person may file a protest with the Office of Administrative Hearings, and shall serve a copy on the Mayor. The protest shall explain why the deficiency, interest, and penalties should not be assessed.(a-1) Unless otherwise provided in this title, the CFO shall send a notice of proposed audit changes to the person at least 30 days before the proposed assessment is sent.(b) If the person fails to file a protest in a timely manner under subsection (a) of this section, the Mayor shall send the person a final assessment of the deficiency, interest, or penalties.(c) If a protest is filed in a timely manner under subsection (a) of this section, the Mayor may not issue a final assessment of the deficiency, interest, or penalties, and the Office of Administrative Hearings shall decide, after providing an opportunity for a hearing, whether the deficiency, interest, or penalties are proper. Filing a protest shall be deemed to be an election that the Office of Administrative Hearings shall be the exclusive forum to adjudicate all challenges to the proposed assessment, and shall be deemed to be an irrevocable waiver of any right to adjudication of all such challenges in any other forum. Nothing in this subsection limits the right of any person to judicial review pursuant to § 2-1831.16.(d) Nothing in this section or in § 2-1831.03(b)(4) shall limit or preclude any person from appealing any assessment to the Superior Court of the District of Columbia pursuant to § 47-3303, or other applicable law, as an alternative to filing a protest with the Office of Administrative Hearings.(e) Except with respect to the election of remedy and the waiver of rights required by subsection (c) of this section and by § 2-1831.03(j), a final order of the Office of Administrative Hearings in any matter in which a protest has been filed shall have the same effect as a final assessment of a deficiency, interest, or penalties, and the Mayor may undertake any lawful collection efforts for any amount that such final order determines is due from any person.(f) By October 7, 2004, the Office of Tax and Revenue shall notify in writing any person who filed a timely protest of a proposed assessment with the Office of Tax and Revenue on or before September 30, 2004, of his or her right to file a request for a hearing with the Office of Administrative Hearings on or before November 1, 2004. If any such person does not file a timely request for a hearing pursuant to this subsection, the Mayor shall send the person a final assessment of any deficiency, interest, or penalties.June 9, 2001, D.C. Law 13-305, § 404(b), 48 DCR 334; Dec. 7, 2004, D.C. Law 15-217, § 4(l), 51 DCR 9126; Oct. 22, 2015, D.C. Law 21-36, § 7082(b), 62 DCR 10905.Section 5 of D.C. Law 15-217 provided that section 4 shall apply as of October 1, 2004.