Northwestern States Portland Cement Co. v. Minnesota

1959-02-24

Headline: States may tax apportioned in-state shares of foreign corporations’ net income from interstate sales; Court affirmed Minnesota’s assessment and reversed Georgia’s application, allowing more state collection when apportionment is fair.

Holding:

Real World Impact:

Allows states to tax apportioned in-state share of foreign corporations' net income.
Requires companies selling across state lines to file returns and compute apportioned income.
May increase litigation and administrative burdens over apportionment formulas.

Topics: state corporate taxes, interstate commerce, apportionment formulas, business taxation

Summary

Background

Two companies that sold goods across state lines challenged state income taxes. An Iowa cement maker sold cement into Minnesota from its Mason City plant and ran a small Minneapolis sales office; Minnesota assessed roughly $102,000. A Delaware valve maker sold into Georgia from Alabama and kept a small Atlanta office; Georgia assessed about $1,478.31. Each State used a three-factor apportionment formula (sales, property, payroll or inventory, wages, receipts) to assign part of a foreign corporation’s net income to the taxing State.

Reasoning

The central question was whether a State may tax the portion of a foreign corporation’s net income that is fairly apportioned to activities carried on in the State even when those activities further only interstate commerce. The Court said yes: net income tied to in‑state activities may be taxed if the tax is not discriminatory and the apportionment creates a sufficient connection (nexus) to the State. The majority relied on earlier net‑income cases and distinguished franchise or privilege taxes that directly burden interstate commerce.

Real world impact

The decision lets States collect apportioned corporate income taxes from out‑of‑state companies that run in‑state sales and solicitation operations, so long as formulas are fair and non‑discriminatory. Corporations selling across state lines will need to account for apportioned income for state returns. The Court noted no multiple‑tax problem here, but the opinion and dissents acknowledge potential compliance and litigation burdens.

Dissents or concurrances

Justice Harlan concurred, urging reliance on precedent. Justices Frankfurter and Whittaker dissented, warning this extends state taxing power to exclusively interstate activities and predicting administrative burdens and a need for congressional action.