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The Economic Foundation Of The Dormant Commerce Clause, Michael S. Knoll, Ruth Mason
The Economic Foundation Of The Dormant Commerce Clause, Michael S. Knoll, Ruth Mason
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Last Term, a sharply divided Supreme Court decided a landmark dormant Commerce Clause case, Comptroller of the Treasury of Maryland v. Wynne. Wynne represents the Court’s first clear acknowledgement of the economic underpinnings of one of its main doctrinal tools for resolving tax discrimination cases, the internal consistency test. In deciding Wynne, the Court relied on economic analysis we provided. This Essay explains that analysis, why the majority accepted it, why the dissenters’ objections to the majority’s reasoning miss their mark, and what Wynne means for state taxation. Essential to our analysis and the Court’s decision in Wynne …
Amicus Brief In Maryland Comptroller V. Wynne, Michael S. Knoll, Ruth Mason
Amicus Brief In Maryland Comptroller V. Wynne, Michael S. Knoll, Ruth Mason
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The internal consistency test reveals that Maryland applies systematically higher “county” taxes to interstate commerce than to in-state commerce.
Economic analysis of Maryland’s tax regime — including its taxes on inbound, outbound, and domestic activities — confirms what the internal consistency test suggests, namely, that the Maryland “county” tax discourages interstate commerce. Specifically, the Maryland tax regime discourages Maryland residents from earning income outside of Maryland, and it simultaneously discourages nonresidents from earning income in Maryland. Maryland alone causes this distortion; the distortion does not depend on the taxes imposed by any other state.
Petitioner’s argument that Maryland’s outbound tax …