- 18 - Furthermore, in justifying the Appeals officer’s allocation of the liabilities equally between petitioner and Mr. Scott, respondent contends that without more information from petitioner the Appeals officer could not tell whose income was reported on the returns. Yet the Appeals officer never requested any additional information from petitioner and, in contravention of section 6015(a), applied the community property laws of California and Idaho. See Mora v. Commissioner, 117 T.C. 279, 290 n.8 (2001). Respondent’s own argument demonstrates the inadequacy of the procedures employed in this case. We conclude that Robinette is inapplicable to this case. Our determination with respect to the appropriate relief available to petitioner under section 6015(f) is made in a trial de novo, in accordance with Ewing v. Commissioner, supra, and we may consider matters raised at trial which were not included in the administrative record. Petitioner bears the burden of proving that respondent’s denial of full relief was an abuse of discretion. See Rule 142(a); Alt v. Commissioner, 119 T.C. 306, 311 (2002), affd. 101 Fed. Appx. 34 (6th Cir. 2004); Jonson v. Commissioner, 118 T.C. 106, 113 (2002), affd. 353 F.3d 1181 (10th Cir. 2003). Petitioner must demonstrate that respondent exercised his discretion arbitrarily, capriciously, or without sound basis inPage: Previous 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 NextLast modified: November 10, 2007