In this case, we originally held, in Part III of our opinion, that the District of Columbia erred in apportioning and taxing, as business income, the insurance proceeds that the taxpayer received for flood damage to its Virginia manufacturing facility.
District of Columbia v. Pierce Associates, Inc.,
The District of Columbia and thirty-five states have adopted the Uniform Division of Income for Tax Purposes Act (UDITPA). UDITPA, also referred to as the Multistate Tax Compact, generally divides income into two types: business income and non-business income. D.C.Code § 47-441 Art. IV(1)(a), (e) (1982 Supp.).
1
Business income is apportioned among taxing jurisdictions according to a three factor formula,
id.
§ 47-441 Art. IV(9);
Pierce, supra,
The District Department of Finance and Revenue interprets the statutory definition of business income to include the insurance payments. “[A]n agency’s interpretation of a statute should be followed when it ‘is reasonable and does not contravene the language or legislative history of the statute.’ ”
District of Columbia v. Catholic University of America,
Section 47-441 Art. IV(l)(a) provides two tests by which income can be classified as business income. “Business income [i] means income arising from transactions and activity in the regular course of the taxpayer’s trade or business and [ii] includes 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.”
The first clause sets out a “transactional” test;
i.e.,
income will be classified as business income if it is attributable to a type of business transaction in which the taxpayer regularly engages.
Tipperary Corp. v. New Mexico Bureau of Revenue,
The second clause, sometimes characterized as a “functional test,” includes as business income all income from tangible and intangible property if it results from a transaction that is an “integral part[] of the taxpayer’s regular trade or business operations.” This means that “all gain from the disposition of the property is considered business income if the property disposed of was used by the taxpayer in its regular trade or business operations. Under this test, the extraordinary nature or the infrequency of the transactions is irrelevant.”
Atlantic Richfield Co., supra,
We originally perceived the definition of “business income” as a unitary transactional test, requiring that every transaction, taxable as such, must itself be in the regular course of the trade or business.
See Pierce, supra,
We are now persuaded that the District’s interpretation of the statute is correct. The second clause of UDITPA’s business income definition provides an alternative, “functional” test. We conclude the District reasonably may decide that “the acquisition, management, and disposition of[] property constitute^] an integral part[] of the taxpayer’s regular trade or business,” D.C.Code § 47-441 Art. IV(l)(a), if — however sporadically — it arises out of normal business operations.
3
If the property had an integral function in the taxpayer’s unitary business,
4
its income properly can be apportioned and taxed as business income, even though the transaction itself does not reflect the taxpayer’s normal trade or business.
See Qualls v. Montgomery Ward & Co.,
In this case, taxpayer’s manufacturing plant furthers its business of furnishing and installing mechanical systems. Taxpayer treated the facility as part of its business, deducted from its District of Columbia income taxes the expenses it incurred in connection with maintaining the plant, D.C.Code § 47-1803.3(a)(1) (1981), and took depreciation deductions for wear and tear. Id., § 47-1803.3(a)(7). Thus, the facility is an integral part of taxpayer’s unitary business (see note 4 supra), and any gain from its disposition may be taxed (if properly apportioned) as business income. 6
Accordingly, we reaffirm our holding in Part IV of our previous opinion that “the District of Columbia may not use a single, ‘sales factor’ in apportioning the business income of a company that conducts business both within and without the District. See D.C.Code [§ 47-1810.2 (1981)];
General Motors [Corp. v. District of Columbia,
We reverse the trial court’s judgment awarding taxpayer a tax refund of $71,-144.10 plus interest and remand for entry of a judgment awarding a refund, consistent with this opinion, based on proper apportionment of all business income.
So ordered.
Notes
. This codification substantially reflects the regulations originally contained in 16 D.C.R.R. § 309.5 (1970), now at 9 D.C.M.R. § 9901.1 (1982).
. Taxpayer is a mechanical contractor in the business of furnishing and installing plumbing, heating, air conditioning, and ventilation systems in the metropolitan area. It also owns a manufacturing plant where it produces sheetmetal ducts, automatic sprinklers, and other specialties for use in its contracting business.
Pierce, supra,
. The Supreme Court has defined the outer limits of income that the state may apportion and tax consistently with the Due Process Clause of the Constitution, as “corporate income that is ‘reasonably related to the activities conducted within the taxing state.’ In order to exclude certain income from the apportionment formula [on constitutional grounds], the company must prove that ‘the income was earned in the course of activities unrelated to [taxpayer’s business in the state].’ The court looks to the ‘underlying economic realities of a unitary business,’ and the income must derive from ‘unrelated business activity’ which constitutes a ‘discrete business enterprise.’ ”
Exxon Corp. v. Wisconsin Dep’t of Revenue,
. The test for a unitary business is whether or not the operation of the portion of the business within the state is dependent upon or contributory to the operation of the business outside the state.
Joslin Dry Goods v. Dolan,
.
But see Western Natural Gas Co. v. McDonald,
. The essence of taxable income is “the accrual of some gain, profit or benefit to the taxpayer.”
Commissioner v. Wilcox,
