- 11 - Edens v. Commissioner, T.C. Memo. 1974-309, affd. 549 F.2d 798 (4th Cir. 1976). Estoppel is generally inapplicable to prevent the Commissioner from correcting a mistake of law. Auto. Club of Mich. v. Commissioner, 353 U.S. 180, 183 (1957). Accordingly, we cannot accept petitioners’ estoppel argument. While petitioners may perceive unfairness in the results of respondent’s actions, they have presented no evidence that suggests respondent made any misrepresentations or participated in any wrongful behavior. Thus, respondent is not estopped from disallowing petitioners’ dependency exemption and child tax credit for the taxable year 2003. D. Actions of Third Party Lastly, petitioners claim that this Court should overturn respondent’s disallowance of the dependency exemption and child tax credit, because the entire matter is a result of Mrs. Norris’s claiming the dependency exemption on her 2003 joint return. Petitioners base this argument on Mrs. Norris’s 1995 Form 8332, wherein she released her claim to the exemption for all future years. They contend she knowingly violated this release as retaliation for differences that arose between her and Mr. Chamberlain over custody of their two children. While Mrs. Norris’s refusal to set aside past grievances and abide by her prior agreement may have contributed to the existence of the instant dispute and petitioners’ unfortunate situation, thisPage: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 10, 2007