[¶ 1] The State of North Dakota, by and through its Tax Commissioner (“Commissioner”), appealed from a judgment declaring the dividends received deduction in N.D.C.C. § 57-38-01.3(l)(g) unconstitutional and enjoining collection of the Commissioner’s assessments of corporate income tax against D.D.I., Inc., Danov Corporation, and Estuary Corporation (collectively referred to as “taxpayers”). 1 We hold the dividends received deduction is not a valid compensatory tax and violates the Commerce Clause. We affirm.
I
[¶ 2] The taxpayers are Florida corporations engaged in managing assets, including oil and gas properties in North Dakota, and they pay North Dakota corporate income taxes on their net income from business done by them in North Dakota. The taxpayers also receive dividend income from other corporations conducting business either wholly or primarily outside of North Dakota. D.D.I. and Estuary initially excluded the dividends received from those other corporations in the calculation of their North Dakota corporate income tax for tax years 1989 through 1997, and Danov excluded those dividends for tax years 1989 through 1995. The Commissioner determined those dividends were business income subject to apportionment, and to the extent the Commissioner determined the dividends were includable in the taxpayers’ North Dakota apportioned income, the Commissioner applied the dividends received deduction under N.D.C.C. § 57-38-01.3(l)(g), which authorizes adjustments to a corporation’s taxable income and provides:
*230 1. The taxable income of a corporation as computed pursuant to the provisions of the Internal Revenue Code of 1954, as amended, must be:
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g. Reduced by dividends or income received by any person from stock or interest in any corporation, the income of which has been assessed and paid by a corporation under this chapter or sections 57-35.3-01 through 57-35.3-12, received by the taxpayer and included in the gross income within the income year if such corporation has reported the name and address of each person owning stock and the amount of dividends or income paid each such person during the year, but when only part of the income of any corporation has been assessed and income tax paid under this chapter or sections 57-35.3-01 through 57-35.3-12, only a corresponding part of the dividends or income received therefrom may be deducted.
[¶ 3] The taxpayers brought this declaratory judgment action against the Commissioner, claiming the dividends received deduction violated the Commerce Clause. The trial court concluded the dividends received deduction violated the “negative” or “dormant” aspect of the Commerce Clause because the deduction was similar to a North Carolina “intangibles tax” held unconstitutional in
Fulton Corp. v. Faulkner,
II
[¶ 4] The Commerce Clause, U.S. Const, art. I, § 8, cl. 3, grants Congress the power “[t]o regulate commerce ... among the several States.” Although the Commerce Clause is phrased as a grant of power to Congress, it has long been understood to have a “negative” or “dormant” aspect that denies states the power unjustifiably to discriminate against or burden the interstate flow of articles of commerce.
Fulton,
[¶ 5] In
Complete Auto Transit, Inc. v. Brady,
[¶ 6] Here, the dispositive issue under that four-part test is whether the dividends received deduction discriminates against interstate commerce. In
Oregon Waste,
[¶ 7] The Commissioner concedes the dividends received deduction facially discriminates against interstate commerce. A facially discriminatory tax may survive Commerce Clause scrutiny if the tax is a “compensatory” or “complementary” tax that requires interstate commerce bear a burden already born by intrastate commerce.
Fulton,
First, “a State must, as a threshold matter, ‘identify] ... the [intrastate tax] burden for which the State is attempting to compensate.’ ” Oregon Waste, supra, at 103[,114 S.Ct. 1345 ] (quoting Maryland v. Louisiana,451 U.S. 725 , 758[,101 S.Ct. 2114 ,68 L.Ed.2d 576 ] (1981)). Second, “the tax on interstate commerce must be shown roughly to approximate — but not exceed — the amount of the tax on intrastate commerce.” Oregon Waste,511 U.S. at 103 [,114 S.Ct. 1345 ]. “Finally, the events on which the interstate and intrastate taxes are imposed must be ‘substantially equivalent’; that is, they must be sufficiently similar in substance to serve as mutually exclusive ‘proxies]’ for each other.” Ibid. (quoting Armco Inc. v. Hardesty, supra, at 643[,104 S.Ct. 2620 ]).
[¶ 8] The Commissioner argues the dividends received deduction must be presumed constitutional because statutes enjoy a strong presumption of constitutionality in North Dakota,
see MCI Telecomms. v. Heitkamp,
[¶ 9] The Commissioner argues the dividends received deduction is a valid *232 compensatory tax. The Commissioner argues the “intangibles tax” found unconstitutional in Fulton and the dividends received deduction in this case are not similar. We reject the Commissioner’s arguments.
[¶ 10] In
Fulton,
[A] corporation doing all of its business within the State would pay corporate income tax on 100% of its income, and the taxable percentage deduction allowed to resident owners of that corporation’s stock under the intangibles tax would likewise be 100%. Stock in a corporation doing no business in North Carolina, on the other hand, would be taxable on 100% of its value. For the intermediate cases, holders of stock were able to look up the taxable percentage for a large number of corporations as determined and published annually by the North Carolina Secretary of Revenue (Secretary). In 1990, for example, the Secretary determined the appropriate taxable percentage of IBM stock to be 95%, meaning that IBM did 5% of its business in North Carolina, with its stock held by North Carolina residents being taxable on 95% of its value.
[¶ 11] In
Fulton,
[¶ 12] The Supreme Court rejected North Carolina’s claim that its intangibles tax was roughly approximate to, but did not exceed, the intrastate corporate income tax.
Fulton,
When a corporation doing business in a State pays its general corporate income tax, it pays for a wide range of things: construction and maintenance of a transportation network, institutions that educate the work force, local police and fire protection, and so on. The Secretary’s justification for the intangibles tax, however, rests on only one of the many services funded by the corporate income tax, the maintenance of a capital market for the shares of both foreign and domestic corporations. To the extent that corporations do their business outside North Carolina, after all, they get little else from the State. Even, then, if we *233 suppressed our suspicion that North Carolina actually funds its capital market through its blue sky fees, not its general corporate taxation, the relevant comparison for our analysis has to be between the size of the intangibles tax and that of the corporate income taxes component that purportedly funds the capital market.
Id.
at 337-38,
[¶ 13] The Supreme Court also rejected North Carolina’s claim that its intangibles tax and its general corporate income tax fell on substantially equivalent events.
Fulton,
[¶ 14] Here, N.D.C.C. § 57-38-01.3(l)(g) authorizes a dividends received deduction to a dividend recipient to the extent the dividend payor’s income was subject to North Dakota corporate income tax, but does not grant a dividends received deduction to a dividend recipient if the dividend payor’s income was not subject to North Dakota corporate income tax. The Commissioner argues the intrastate tax burden for which the dividends received deduction attempts to compensate is the North Dakota corporate income tax paid by a North Dakota corporation that distributes the already taxed corporate profits as a dividend. The Commissioner argues the dividends received deduction compensates for the tax already paid on North Dakota income by the North Dakota corporation paying that dividend. The Commissioner argues “[o]nly one level of North Dakota income tax should be imposed on North Dakota income. The [dividends received deduction] insures that, in the end, there is only one level of North Dakota income tax on North Dakota income. Interstate commerce, i.e., the dividend from [an out-of-state corporation] to [taxpayers] bears the same burden ... already borne by intrastate commerce, i.e., the dividend from [a North Dakota corporation] to [taxpayers].” The Commissioner offers the following comparative tax hypothetical, with a ten percent tax rate on North Dakota corporate income and on dividends:
North Dakota Corporation Out-of-State Corporation
Dividend Received by Taxpayers $100 $100
North Dakota Corporate Income Tax on Profits out of which Dividend is Paid $10 $0
Dividends Received Deduction $100 $0
Taxable Dividend O o r-H o
North Dakota Corporate Income Tax on Receipt of Dividend $0 $10
Total North Dakota Tax Paid By Dividend Payor Corporation and by Taxpayers $10 $10
*234
[¶ 15] Although avoiding double taxation of North Dakota income is a permissible goal, the Commissioner has not identified any specific in-state activity or benefit received by the taxpayers to justify the compensatory levy on their dividends received from out-of-state corporations. The State of North Dakota does not have a general sovereign interest in taxing income earned out-of-state and must identify some specific in-state activity or benefit to justify a compensatory levy.
Fulton,
[¶ 16] The Commissioner’s comparative tax hypothetical ignores the corporate income tax that an out-of-state corporation’s state might impose on the out-of-state corporation’s profits, which effectively imposes a double layer of tax on the out-of-state income but not on the in-state income. The risk of multiple taxation may be considered in assessing a Commerce Clause claim,
see Mobil Oil Corp. v. Commissioner of Taxes,
[¶ 17] Here, when the effect of the corporate income tax that an out-of-state corporation’s state might impose on the out-of-state corporation’s profits is considered, the dividends received deduction does not avoid double taxation for out-of-state corporate income and does not roughly approximate the tax on intrastate commerce under the Commissioner’s comparative tax hypothetical. We conclude the dividends received deduction does not satisfy the first two elements of the compensatory tax doctrine, and we need not address whether the interstate and intrastate taxes are imposed on substantially equivalent events.
See Fulton,
III
[¶ 18] Relying on
Oregon Waste,
[¶ 19] However,
Oregon Waste
does not apply an alternative commerce clause test for compensatory tax cases. In
Oregon Waste,
IV
[¶ 20] We conclude the dividends received deduction is not a valid compensatory tax and impermissibly discriminates against interstate commerce; therefore, N.D.C.C. § 57-38-01.3(l)(g) violates the Commerce Clause of the United States Constitution and is invalid. 2 We affirm the district court judgment.
Notes
. The Commissioner has not separately raised or argued the appropriateness of the injunc-five relief granted by the district court. We, therefore, do not address the issue.
. Having declared subsection (g) unconstitutional has no effect on the remainder of the statute.
See
N.D.C.C. § 1-02-20.
See also Montana-Dakota Utils. Co. v. Johanneson,
