Opinion of the Court

which produced that income is "acquired, managed or disposed of for purposes relating or contributing to the taxpayer's business."" Ibid. (quoting Brief for Appellee 4). In re

jecting the argument we observed:

"This definition of unitary business would destroy the concept. The business of a corporation requires that it earn money to continue operations and to provide a return on its invested capital. Consequently all of its operations, including any investment made, in some sense can be said to be 'for purposes related to or contributing to the [corporation's] business.' When pressed to its logical limit, this conception of the 'unitary business' limitation becomes no limitation at all." 458 U. S., at 326.

Apart from semantics, we see no distinction between the "purpose" test we rejected in ASARCO and the "ingrained acquisition-divestiture policy" approach adopted by the New Jersey Supreme Court. 125 N. J., at 36, 592 A. 2d, at 544. The hallmarks of an acquisition that is part of the taxpayer's unitary business continue to be functional integration, centralization of management, and economies of scale. Container Corp. clarified that these essentials could respectively be shown by: transactions not undertaken at arm's length, 463 U. S., at 180, n. 19; a management role by the parent that is grounded in its own operational expertise and operational strategy, ibid.; and the fact that the corporations are engaged in the same line of business, id., at 178. It is undisputed that none of these circumstances existed here.

The New Jersey Supreme Court also erred in relying on the fact that Bendix intended to use the proceeds of its gain from the sale of ASARCO to acquire Martin Marietta. Even if we were to assume that Martin Marietta, once acquired, would have been operated as part of Bendix's unitary business, that reveals little about whether ASARCO was run as part of Bendix's unitary business. Nor can it be main

O'CONNOR, J., dissenting

tained that Bendix's shares of ASARCO stock, which it held for over two years, amounted to a short-term investment of working capital analogous to a bank account or certificate of deposit. See Container Corp., 463 U. S., at 180, n. 19; ASARCO, 458 U. S., at 325, n. 21.

In sum, the agreed-upon facts make clear that under our precedents New Jersey was not permitted to include the gain realized on the sale of Bendix's ASARCO stock in the former's apportionable tax base.

The judgment of the New Jersey Supreme Court is reversed, and the case is remanded for further proceedings not inconsistent with this opinion.

It is so ordered.

JUSTICE O'CONNOR, with whom THE CHIEF JUSTICE, JUSTICE BLACKMUN, and JUSTICE THOMAS join, dissenting.

In my view, petitioner has not shown by "clear and cogent evidence" that its investment in ASARCO was not operationally related to the aerospace business petitioner conducted in New Jersey. Exxon Corp. v. Department of Revenue of Wis., 447 U. S. 207, 221 (1980) (internal quotation marks omitted). Though I am largely in agreement with the Court's analysis, I part company on the application of it here.

I agree with the Court that we cannot adopt New Jersey's suggestion that the unitary business principle be replaced by a rule allowing a State to tax a proportionate share of all the income generated by any corporation doing business there. See ante, at 784. Were we to adopt a rule allowing taxation to depend upon corporate identity alone, as New Jersey suggests, the entire due process inquiry would become fictional, as the identities of corporations would fracture in a corporate shell game to avoid taxation. Under New Jersey's theory, for example, petitioner could avoid having its ASARCO investment taxed in New Jersey simply by establishing a separate subsidiary to hold those earnings outside New Jersey. A constitutional principle meant to ensure

O'CONNOR, J., dissenting

that States tax only business activities they can reasonably claim to have helped support should depend on something more than manipulations of corporate structure. See Mobil Oil Corp. v. Commissioner of Taxes of Vt., 445 U. S. 425, 440 (1980) (“[T]he form of business organization may have nothing to do with the underlying unity or diversity of business enterprise"); Fargo v. Hart, 193 U. S. 490 (1904) (refusing to find unitary business even though single owner); Adams Express Co. v. Ohio State Auditor, 165 U. S. 194, 222 (1897) (same).

New Jersey suggests that we should presume that all the holdings of a single corporation are mutually interdependent because common ownership will stabilize profits from the commonly held businesses, generating flows of value between them that make them part of a unity. While it may be true that many corporations attempt to diversify their holdings to avoid business cycles, we have refused to presume a flow of value into an in-state business from the potential benefits of being part of a larger multistate, multibusiness corporation. The reason for this is simple: Diversification may benefit the corporation as an entity without necessarily affecting the business activity in the taxing State and without requiring any support from the taxing State. See Wisconsin v. J. C. Penney Co., 311 U. S. 435, 444 (1940) (State may not tax where it has not "given anything for which it can ask return").

I also agree with the Court that there need not be a unitary relationship between the underlying business of a taxpayer and the companies in which it invests in order for a State to tax investment income. See ante, at 787. "[A]ctive operational control" of the investment income payor by the taxpayer is certainly not required. ASARCO Inc. v. Idaho Tax Comm'n, 458 U. S. 307, 343 (1982) (O'CONNOR, J., dissenting). Insofar as a requirement that the investment payor and payee be unitary was suggested by our decisions in ASARCO and F. W. Woolworth Co. v. Taxation and Reve

O'CONNOR, J., dissenting

nue Dept. of N. M., 458 U. S. 354 (1982), petitioner concedes that was a "doctrinal foot fault." Reply Brief for Petitioner on Reargument 4. Although a unitary relationship between the investment income payor and payee would suffice to relate the investment income to the in-state business, such a connection is not necessary. Taxation of investment income received from a nondomiciliary taxpayer's investment in another corporation requires only that the investment income be sufficiently related to the taxpayer's in-state business, not that the taxpayer's business and the corporation in which it invests be unitary. Only when the State seeks to tax directly the income of a nondomiciliary taxpayer's subsidiary or affiliate through combined reporting, see Container Corp. of America v. Franchise Tax Bd., 463 U. S. 159, 169, and n. 7 (1983), must the underlying businesses of the taxpayer and its affiliate or subsidiary be unitary. In any case, the key question for purposes of due process is whether the income that the State seeks to tax is, by the time it is realized, sufficiently related to a unitary business, part of which operates in the taxing State.

In this connection, I agree with the Court that out-of-state investments serving an operational function in the nondomiciliary taxpayer's in-state business are sufficiently related to that business to be taxed. In particular, I agree that "interim uses of idle funds "accumulated for the future operation of [the taxpayer's] business [operation],""" may be taxed. Ante, at 787 (quoting ASARCO, supra, at 325, n. 21). The Court, however, leaves "operational function" largely undefined. I presume that the Court's test allows taxation in at least those circumstances in which it is allowed by the Uniform Division of Income for Tax Purposes Act (UDITPA). Ante, at 786. UDITPA counts as apportionable business income from "tangible and intangible property if the acquisition, management, and disposition of the property constitute integral parts of the taxpayer's regular trade or business operations." UDITPA §1(a), 7A U. L. A. 336

O'CONNOR, J., dissenting

(1985) (emphasis added). Presumably, investment income serves an operational function if it is, to give only some examples, intended to be used by the time it is realized for making the business' anticipated payments; for expanding or replacing plants and equipment; or for acquiring other unitary businesses that will serve the in-state business as stable sources of supply or demand, or that will generate economies of scale or savings in administration.

In its application of these principles to this case, however, I diverge from the Court's analysis. The Court explains that while "interest earned on short-term deposits in a bank located in another State" may be taxed "if that income forms part of the working capital of the corporation's unitary business," petitioner's longer term investment in ASARCO may not be taxed. Ante, at 787. The Court finds the investment here not to be operational because it was not analogous to a "short-term investment of working capital analogous to a bank account or certificate of deposit." Ante, at 790.

Any distinction between short-term and long-term investments cannot be of constitutional dimension. Whether an investment is short-term or long-term, what matters for due process purposes is whether the investment is operationally related to the in-state business. "The interim investment of retained earnings prior to their commitment to a major corporate project... merely recapitulates on a grander scale the short-term investment of working capital prior to its commitment to the daily financial needs of the company." ASARCO, supra, at 338 (O'CONNOR, J., dissenting). I see no distinction relevant to due process between investing in a company in order to build capital to acquire a second company related to the in-state business and, for example, “leas[ing] for a term of years the areas of [the taxpayer's] office buildings into which it intends ultimately to expand," which could hardly be claimed to set up a "separate and unrelated leasing business." 458 U. S., at 338, n. 6.