Ferguson v. Skrupa, 372 U.S. 726 (1963), was a case before the United States Supreme Court regarding the constitutionality of prohibiting debt adjustment.

A Kansas statute[1] makes it a misdemeanor for any person to engage "in the business of debt adjusting" except as an incident to the lawful practice of law, "debt adjusting" being defined as the making of a contract whereby an adjuster, for consideration, agrees to distribute payments by a debtor among his creditors in accordance with an agreed upon plan.

[2] On appeal, the Supreme Court of the United States reversed by a vote of 9-0.

Justice Black delivered the majority opinion, which held that the statute did not violate the due process clause.

Harlan, J., concurred in the judgment on the ground that the state statute bore a rational relation to a constitutionally permissible objective.