Export Tax Clause

Doctrine

The Clause is a direct limit on Congress's taxing power. It reaches federal charges laid on goods because they are exported, but it does not bar every generally applicable tax that affects exporters.

United States v. IBM invalidated a federal excise tax on insurance policies covering exported goods because the tax functioned as a tax on exportation. By contrast, generally applicable income or business taxes are usually valid when they do not target exported articles.

Originalist note

The Clause reflects the export-state compromise at the Convention, especially the concern of southern export states that the new national government might tax staple exports. Its text is categorical, but the key doctrinal question is whether a federal charge is on the exported article or on a separate taxable event.

The prohibition was not a founding consensus; it was won on a contested floor vote against Madison's own objection. On 21 Aug. 1787, Mason moved to add "provided that no tax duty or imposition, shall be laid by the Legislature of the U. States on articles exported from any State," arguing the Northern states "did not mean to deny the Southern this security" against a general taxing power falling too heavily on staple crops. Madison opposed the exemption on five grounds — that the power to tax exports was "proper in itself," that it "might with particular advantage be exercised" on goods like tobacco where America faced no foreign rival, that leaving states free to tax their neighbors' exports (as landlocked states' produce passing through a port state) was already a live grievance, and that "time will equalize the situation of the States in this matter." Gouverneur Morris agreed, warning the proviso was "so radically objectionable, that it might cost the whole system the support of some members." The Convention rejected two narrowing amendments — Clymer's motion to limit any export tax to "the purpose of revenue" (3 ayes-7 noes) and Madison's fallback requiring a two-thirds vote of both houses (5-6) — before adopting the flat prohibition itself, 7 ayes to 4 noes. (Records of the Federal Convention, 1:592, 2:305, 2:359-63.)

Story's Commentaries record the same two failed amendments and treat the flat rule as deliberately categorical rather than a policy default: "the wisdom and sound policy of this restriction cannot admit of reasonable doubt; not so much that the powers of the general government were likely to be abused, as that the constitutional prohibition would allay jealousies, and confirm confidence." Story adds that the prohibition "extends not only to exports, but to the exporter. Congress can no more rightfully tax the one, than the other" — the textual root of the modern inquiry into whether a federal charge falls on exportation itself. Joseph Story, Commentaries on the Constitution 2:§§ 1011-12 (1833).

A direct ingest of §§ 1010-1012 confirms this citation and adds Story's own framing of the clause's purpose, stated jointly with the Port Preference Clause:

"The obvious object of these provisions is, to prevent any possibility of applying the power to lay taxes, or regulate commerce, injuriously to the interests of any one state, so as to favor or aid another." — Joseph Story, Commentaries on the Constitution § 1011 (1833)

The 16 August floor debate: the question raised and deferred, not yet resolved

The "Originalist note" above documents the prohibition's adoption on 21 August, citing the Founders' Constitution's summary of Records of the Federal Convention 2:305, 2:359-63. Madison's own Notes show the question was first raised five days earlier, on 16 August, when the Convention reached Article 7 sect. 1's enumerated taxing power — a floor round with its own distinct cast of arguments, ending not in a vote on the prohibition itself but in a vote simply to defer the question to its later place in the report.

Mason moved to import the Art. 6 sect. 4 export-tax prohibition directly into the new enumeration, framing it as a sectional-security measure rather than a general limit on the taxing power: he was "unwilling to trust to its being done in a future article," and "hoped the Northern States did not mean to deny the Southern this security," professing his "jealousy for the productions of the Southern, or, as he called them, the staple States." Sherman had no objection in principle but worried about disrupting the Committee of Detail's own report structure. Rutledge conditioned his support on the slave-trade clause also being agreed to — the same package-deal logic that would resurface in the Convention's later Article 4 sect. 4 debate over counting slaves in apportionment (see Elliot's Debates (Vol. V)). Gouverneur Morris called the proposed proviso "inadmissible any where," warning it was "so radically objectionable, that it might cost the whole system the support of some members," and argued taxing exports would sometimes be "the most easy and proper" of the two options. Madison gave the debate's fullest defense of leaving export taxation to Congress, in terms distinct from Story's later institutional summary (above): the power was "proper in itself" and better vested nationally than exercised piecemeal by states; it would fall usefully on staples like tobacco where America faced no foreign competitor, since the risk would simply be passed to European consumers; and it would correct an existing grievance — landlocked states' produce, shipped through a commercial neighbor's port, already being taxed by that neighbor on ordinary imports, and equally exposed to a state export tax if Congress could not act instead. Williamson and Ellsworth both favored the prohibition on the merits but, unlike Mason, did not want it inserted out of the report's existing order. Wilson opposed any prohibition on general export taxes, citing the "injustice and impolicy" of leaving states like New Jersey and Connecticut permanently subject to their commercial neighbors' taxing power. Gerry distrusted the legislature with the power altogether: "It might ruin the country. It might be exercised partially, raising one and depressing another part of it." Gouverneur Morris answered that any legislature "if disposed" could ruin the country regardless, and gave the debate's most concrete account of the power's intended use — taxing lumber to "punish" West Indian trade restrictions, taxing live stock and flour, and using scarcity leverage ("In case of a dearth in the West Indies, we may extort what we please") as a revenue source while direct taxes remained impractical: "Seize and sell their effects, and you push them into revolts." Mercer argued the reverse of Mason's sectional case — that Virginia's own tobacco tax had already "given an advantage to that of Maryland," and that the South, not the North, benefited more from federal naval protection of the carrying trade. Sherman closed by warning that comparing states' import-export positions in detail would open "a boundless field," and that "a power to tax exports would shipwreck the whole." Carroll was "surprised that any objection should be made to an exception of exports from the power of taxation."

The Convention did not vote the prohibition up or down that day. It voted instead to defer the whole question to the place in the report where the exception belonged:

"It was finally agreed, that the question concerning exports should lie over for the place in which the exception stood in the report.—Maryland alone voting against it." — Notes on the Convention, 16 Aug. 1787

key-insight

The 21 August adoption this page's "Originalist note" already documents (Mason's motion, Clymer's and Madison's defeated narrowing amendments, the final 7-4 vote) was not the prohibition's first floor appearance — it was the second, five days after this range's inconclusive first round. The near-unanimous 16 August deferral vote (Maryland alone dissenting) shows the Convention agreed only that the question belonged elsewhere in the document, not that it agreed on an answer; Gouverneur Morris's, Wilson's, and Gerry's opposition on 16 August did not prevent the prohibition's adoption five days later, but this range shows their objections were raised, and answered by Mason, Madison, and Mercer, before that later vote rather than only during it.

The 21 August floor debate: verbatim record of the prohibition's adoption

The "Originalist note" above and the "16 August" section document the prohibition's deferral (16 Aug.) and its eventual 7-4 adoption (21 Aug.), both drawn from the Founders' Constitution's citation to Records of the Federal Convention 2:305, 2:359-63 — a summary without direct speaker quotations for the 21 August session itself. Elliot's diary text supplies that missing verbatim record.

Mason renewed the prohibition, unwilling to trust it to "its being done in a future article." Langdon warned that without the flat bar, New Hampshire and other non-exporting states would remain exposed to taxation by their exporting neighbors' own commercial regulations, though he thought a supermajority requirement might guard against the same danger without a categorical rule. Ellsworth answered with three distinct objections to any congressional export tax:

"There are solid reasons against Congress taxing exports. First, it will discourage industry, as taxes on imports discourage luxury. Secondly, the produce of different states is such as to prevent uniformity in such taxes. There are indeed but a few articles that could be taxed at all, as tobacco, rice, and indigo; and a tax on these alone would be partial and unjust. Thirdly, the taxing of exports would engender incurable jealousies." — Oliver Ellsworth, Notes on the Convention, 21 Aug. 1787

Williamson, despite Virginia's own duty on North Carolina tobacco shipped through its ports, said he would "never agree to this power," warning it would "destroy the last hope of the adoption of the plan." Gouverneur Morris disagreed at length, cataloguing specific commodities an export tax could reach — tobacco, lumber, and live stock "belonging to different states," plus ginseng and masts for ships "by which a tax might be thrown on other nations" — and warning that without the power, "an embargo cannot be laid, though in time of war such a measure may be of critical importance." Butler called the power "unjust and alarming to the staple states." Dickinson thought a blanket, permanent prohibition worse than excepting particular articles by name; Sherman answered that any such enumeration would be "difficult, invidious, and improper," and that the states "will never give up all power over trade."

Madison gave the debate's fullest defense of vesting the power nationally, distinct from Ellsworth's institutional caution:

"As we ought to be governed by national and permanent views, it is a sufficient argument for giving the power over exports, that a tax, though it may not be expedient at present, may be so hereafter." — James Madison, Notes on the Convention, 21 Aug. 1787

Madison argued the imports and exports of every state were "pretty nearly equal," so the sectional-burden fear was overstated, and that only a general federal power could ever effect an embargo, since a state acting alone could simply be routed around by its neighbors. Wilson, opposing his own state's immediate commercial interest as a re-exporter for Maryland, New Jersey, and Delaware, argued a federal export power might prove "more effectual than that over imports in obtaining beneficial treaties of commerce." Gerry distrusted the legislature with the power altogether, warning "it might be exercised partially, raising one and depressing another part of" the country. Fitzsimons would oppose an immediate tax but wanted the power reserved for when America became "a manufacturing country."

Mason cast the fight in explicit sectional-arithmetic terms distinct from any register already on this page:

"If we compare the states in this point of view, the eight Northern States have an interest different from the five Southern States, and have, in one branch of the legislature, thirty-six votes against twenty-nine, and in the other in the proportion of eight against five. The Southern States had therefore ground for their suspicions." — George Mason, Notes on the Convention, 21 Aug. 1787

Clymer answered that every state, not only the South, could reason the same way about its own staple — the Middle states might fear for wheat and flour, exposed to more foreign competition than tobacco or rice — and moved qualifying the power by inserting "for the purpose of revenue" after "duty." That motion failed, 3-8. Madison's own fallback, requiring two-thirds of both houses to tax exports as "a lesser evil than a total prohibition," failed 5-6 — with Virginia's own delegation split, Mason, Randolph, and Blair opposed, Washington and Madison in favor. The flat prohibition itself then passed, 7-4, Washington and Madison again voting with the minority against their own state's majority.

key-insight

The "Originalist note" and "16 August" sections above already state the 21 August outcome and its Founders'-Constitution citation; this section supplies the verbatim exchange itself — Ellsworth's three-part reasoning, Mason's sectional vote count (36-29 and 8-5), Gouverneur Morris's specific list of taxable exports, and the two failed narrowing amendments (Clymer's revenue-purpose qualifier, Madison's two-thirds requirement) — directly from Madison's diary rather than from a secondary citation to it.