- 4 - Petitioner contends that the interest attributable to the $2,404 tax he owes should be abated. Petitioner’s claim is broad enough to be considered a request for interest abatement pursuant to section 6404. The Tax Court is a court of limited jurisdiction and may exercise jurisdiction only to the extent authorized by Congress. Naftel v. Commissioner, 85 T.C. 527, 529 (1985). The question of the Court’s jurisdiction is fundamental and must be addressed when raised by a party or on the Court’s own motion. Id. at 530. Consistent with section 6404(h)(1), the Court’s jurisdiction over interest abatement cases depends on a valid notice of final determination and a timely filed petition for review. See Rule 280(b); Gati v. Commissioner, 113 T.C. 132, 134 (1999). But cf. Katz v. Commissioner, 115 T.C. 329, 340-341 (2000). The Court does not have jurisdiction to decide whether the Commissioner’s failure to abate interest under section 6404 constitutes an abuse of discretion unless or until the Commissioner has made a “final determination” not to abate interest. Bourekis v. Commissioner, 110 T.C. 20, 25-26 (1998); Sigel v. Commissioner, T.C. Memo. 2001-138. The Court does not have jurisdiction regardless of whether the innocent spouse claim was raised in a “stand-alone” case or in a deficiency proceeding. Petitioner did not submit a request for interest abatement, and respondent did not make a “determination” not to abatePage: Previous 1 2 3 4 5 6 NextLast modified: March 27, 2008