Summary

Mahlon Pitney La Belle Iron Works v. United States…

There is a logical incongruity in entering upon the books of a corporation as the capital value of property acquired for permanent employment in its business and still retained for that purpose, a sum corresponding not to its cost but to what probably might be realized by sale in the market. It is not merely that the market value has not been realized or tested by sale made, but that sale cannot be made without abandoning the very purpose for which the property is held, involving a withdrawal from business so far as that particular property is concerned.
Source: Wikisource

Mahlon Pitney La Belle Iron Works v. United States…

The word 'invested' in itself imports a restrictive qualification. When speaking of the capital of a business corporation or partnership, such as the act deals with, 'to invest' imports a laying out of money, or money's worth, either by an individual in acquiring an interest in the concern with a view to obtaining income or profit from the conduct of its business, or by the concern itself in acquiring something of permanent use in the business
Source: Wikisource

Mahlon Pitney La Belle Iron Works v. United States…

Of course it will be understood that Congress has very ample authority to adjust its income taxes according to its discretion, within the bounds of geographical uniformity. Courts have no authority to pass upon the propriety of its measures; and we deal with the present criticism only for the purpose of refuting the contention, strongly urged, that the tax is so wholly arbitrary as to amount to confiscation.
Source: Wikisource

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