In the case of Maguire et ux. v. Commissioner of Internal Revenue, 1940, the Supreme Court ruled on a tax dispute involving stock dividends and capital gains taxes. The appellants had received additional shares as a dividend from their company but did not sell them immediately; when they eventually sold these shares, they argued that the profit should be taxed as capital gain rather than income because it was derived from an increase in value over time rather than immediate income at the time of receipt. However, the court disagreed with this interpretation and held that such profits were taxable as ordinary income under Section 115(g) of the Revenue Act of 1936 since it was essentially a distribution made by a corporation to its shareholders out of earnings or profits accumulated after February 28th, 1913.

In the dissenting opinion for Maguire et ux. v. Commissioner of Internal Revenue, Justice Roberts disagreed with the majority's interpretation of Section 113(a)(5) and (b)(1) of the Revenue Act regarding tax liability on stock dividends. He argued that these sections should be read in conjunction to determine whether a taxpayer received income from a dividend or merely experienced an increase in capital value due to market fluctuations. According to him, if there was no actual distribution by the corporation but only an increase in share value, it would not constitute taxable income under existing laws at that time; rather it would be considered as capital appreciation which is not subject to immediate taxation until realized through sale or disposition. The justice believed this interpretation better aligned with Congress' intent when drafting these provisions and more accurately reflected economic realities faced by taxpayers.