The Minnesota Tea Co. v. Helvering case in 1937 involved the Minnesota Tea Company challenging a tax assessment by the Commissioner of Internal Revenue, Guy T. Helvering. The company argued that it should not be taxed on income derived from its subsidiaries because they were separate entities and their profits did not constitute income for the parent company until distributed as dividends. However, the Supreme Court ruled against this argument, stating that under Section 22(a) of the Revenue Act of 1928, gross income included gains or profits acquired through any source; thus including those earned by wholly-owned subsidiaries even if undistributed to shareholders at year-end. This decision upheld an expansive interpretation of taxable corporate "income," which includes earnings retained within a controlled group rather than only amounts formally paid out as dividends.

In the dissenting opinion for Minnesota Tea Co. v. Helvering, it was argued that the majority's decision to allow a tax deduction for losses incurred due to theft by employees contradicted previous rulings and interpretations of the law. The dissent emphasized that such losses should not be considered as "losses incurred in trade or business" under Section 23(e) of the Revenue Act because they are not directly tied to normal operations but rather result from criminal activities outside regular business transactions. Furthermore, it was contended that allowing these deductions would set a dangerous precedent where businesses could claim deductions for any loss resulting from illegal actions, which is contrary to public policy and legislative intent behind taxation laws.