Flint v. Stone Tracy Company — Opinion of the Court
“ Conceding the power of Congress to tax the business activities of private corporations, including, as in this case, the privilege of carrying on business in a corporate capacity, the tax must be measured by some standard, and none can be chosen which will operate with absolute justice and equality upon all corporations. Some corporations do a large business upon a small amount of capital; others with a small business may have a large capital. A tax upon the amount of business done might operate as unequally as a measure of excise as it is alleged the measure of income from all sources does. ”
