- 5 - Discussion The Tax Court is a court of limited jurisdiction, and we may exercise our jurisdiction only to the extent authorized by Congress. Naftel v. Commissioner, 85 T.C. 527, 529 (1985). This Court’s jurisdiction to redetermine a deficiency depends on the issuance of a valid notice of deficiency and a timely filed petition. Rule 13(a), (c); Monge v. Commissioner, 93 T.C. 22, 27 (1989); Normac, Inc. v. Commissioner, 90 T.C. 142, 147 (1988). Section 6212(a) expressly authorizes the Commissioner, after determining a deficiency, to send a notice of deficiency to the taxpayer by certified or registered mail. Indeed, if the notice is mailed to the taxpayer at the taxpayer’s last known address, actual receipt of the notice by the taxpayer is immaterial. See King v. Commissioner, 857 F.2d 676, 679 (9th Cir. 1988), affg. 88 T.C. 1042 (1987); Yusko v. Commissioner, 89 T.C. 806, 810 (1987); Frieling v. Commissioner, 81 T.C. 42, 52 (1983). The taxpayer, in turn, has 90 days (or 150 days if the notice is addressed to a person outside of the United States) from the date the notice of deficiency is mailed to file a petition in this Court for a redetermination of the deficiency. Sec. 6213(a). A petition is timely if it is filed with the Court within 90 days after the notice of deficiency is mailed. Id. By virtue of section 7502, a petition that is timely mailed is deemed to be timely filed.Page: Previous 1 2 3 4 5 6 7 8 9 NextLast modified: November 10, 2007