Summary

Portrait of James Clark McReynolds James Clark McReynolds Union Tank Line v. Wright — Opinion of the Court

Taxes must follow realities, not mere deductions from inadequate or irrelevant data.
In Fargo v. Hart, supra, we condemned an assessment ostensibly proportioned to mileage where property without the state and unnecessary to the express company's actual business had been included; and we pointed out that under no formula can a state tax things wholly beyond its jurisdiction.
The same considerations which establish invalidity of the assessment of plaintiff in error's property for 1913 apply to like ones made by the comptroller general for all other years in question.
Source: Wikisource

Portrait of James Clark McReynolds James Clark McReynolds Union Tank Line v. Wright — Opinion of the Court

In the present case the comptroller general made no effort to assess according to real value or otherwise than upon the ratio which miles of railroad in Georgia over which the cars moved bore to total mileage so traversed in all states. Real values-the essential aim-of property within a state cannot be ascertained with even approximate accuracy by such process; the rule adopted has no necessary relation thereto. During a year two or three cars might pass over every mile of railroad in one state while hundreds constantly employed in another moved over lines of less total length.
Source: Wikisource

Portrait of James Clark McReynolds James Clark McReynolds Union Tank Line v. Wright — Opinion of the Court

While the valuation must be just it need not be limited to mere worth of the articles considered separately but may include as well 'the intangible value due to what we have called the organic relation of the property in the state to the whole system.' How to appraise them fairly when the tangibles constitute part of a going concern operating in many states often presents grave difficulties; and absolute accuracy is generally impossible.
Source: Wikisource

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