be in compliance, and which is signed by the taxpayer, is a return despite its inaccuracies. See, e. g., §§7207, 6531(3), 6653(b). Neither do petitioners contend that their original returns were nullities for all purposes of § 6501. They contend, instead, that a fraudulent return is a nullity only for the limited purpose of applying § 6501(a). See Brief for Petitioners in No. 82-1453, p. 24; Brief for Petitioner in No. 82-1509, pp. 33-34. The word “return,” however, appears no less than 64 times in § 6501. Surely, Congress cannot rationally be thought to have given that word one meaning in § 6501(a), and a totally different meaning in §§ 6501(b) through (q).
Zellerbach Paper Co. v. Helvering, 293 U. S. 172 (1934), which petitioners cite, affords no support for their argument. The Court in Zellerbach held that an original return, despite its inaccuracy, was a “return” for limitations purposes, so that the filing of an amended return did not start a new period of limitations running. In the instant cases, the original returns similarly purported to be returns, were sworn to as such, and appeared on their faces to constitute endeavors to satisfy the law. Although those returns, in fact, were not honest, the holding in Zellerbach does not render them nullities. To be sure, current Regulations, in several places, e. g., Treas. Reg. §§301.6211-l(a), 301.6402-3(a), 1.451-l(a), and 1.461-l(a)(3)(i) (1983), do refer to an amended return, as does § 6213(g)(1) of the Code itself, 26 U. S. C. § 6213(g)(1) (1976 ed., Supp. V). None of these provisions, however, requires the filing of such a return. It does not follow from all this that an amended return becomes “the return” for purposes of § 6501(a).
We conclude, therefore, that nothing in the statutory language, the structure of the Code, or the decided cases supports the contention that a fraudulent return is a nullity for statute of limitations purposes.
IV
Petitioners contend that a nonliteral reading should be accorded the statute on grounds of equity to the repentant