Which case is cited as the business purpose doctrine: Gregory v. Helvering or Ableman v. Booth?
Gregory v. Helvering Gregory v. Helvering, 293 U.S. 465 (1935), was a landmark decision by the United States Supreme Court concerned with U.S. income tax law. The case is cited as part of the basis for two legal doctrines: the business purpose doctrine and the doctrine of substance over form. The business purpose doctrine is essentially that where a transaction has no substantial business purpose other than the tax avoidance and tax evasion|avoidance or reduction]] of Federal tax, the tax law will not regard the transaction. The doctrine of substance over form is essentially that, for Federal tax purposes, a taxpayer is bound by the economic substance of a transaction where the economic substance varies from its legal form.
Shelter rule The shelter rule is a doctrine in the common law of property under which a grantee who has received an interest in property from a bona fide purchaser will also be protected as a bona fide purchaser, even if the grantee would not legally qualify for this status. The grantee is "sheltered" from other claims by the grantor's status as an actual bona fide purchaser.