(a) In general. Items of gross income other than those specified in section 861(a) and section 862(a) will generally be separately allocated to sources within or without the United States. See § 1.863-2 for alternate methods to determine the income from sources within or without the United States in the case of items specified in § 1.863-2(a). See also section 865(b) for rules for sourcing income from the sale of inventory property, within the meaning of section 865(i)(1) (inventory), generally, and section 865(e)(2) and § 1.865-3 for sourcing income from the sale of personal property (including inventory) by a nonresident that is attributable to the nonresident's office or other fixed place of business in the United States. In the case of sales of property involving partners and partnerships, the rules of § 1.863-3(f) apply.

(b) Natural resources—(1) In general. Notwithstanding any other provision of this part, except to the extent provided in paragraph (b)(2) of this section or § 1.865-3, gross receipts from the sale outside the United States of products derived from the ownership or operation of any farm, mine, oil or gas well, other natural deposit, or uncut timber within the United States shall be treated as from sources within the United States, and gross receipts from the sale within the United States of products derived from the ownership or operation of any farm, mine, oil or gas well, other natural deposit, or uncut timber outside the United States shall be treated as from sources without the United States.

(2) Additional production activities. Notwithstanding any other provision of this section, gross receipts from the sale of products derived by a taxpayer who performs additional production activities as defined in paragraph (b)(3)(ii) of this section are allocated between sources within and without the United States based on the fair market value of the product immediately prior to the additional production activities. The source of gross receipts equal to the fair market value of the product immediately prior to the additional production activities will be from sources where the farm, mine, oil or gas well, other natural deposit, or uncut timber is located. The source of gross receipts from the sale of the product in excess of the fair market value immediately prior to the additional production activities must be determined under § 1.863-3. For purposes of applying § 1.863-3, only production assets used in the additional production activities are taken into account.

(3) Definitions—(i) Production activity. For purposes of this section, production activity means an activity that creates, fabricates, manufactures, extracts, processes, cures, or ages inventory. See § 1.864-1. Except as otherwise provided in § 1.1502-13 or 1.863-3(f)(2), only production activities conducted directly by the taxpayer are taken into account.

(ii) Additional production activities. For purposes of this section, additional production activities are substantial production activities performed directly by the taxpayer in addition to activities from the ownership or operation of any farm, mine, oil or gas well, other natural deposit, or uncut timber. Whether a taxpayer's activities constitute additional production activities will be determined under the principles of § 1.954-3(a)(4) (except for § 1.954-3(a)(4)(iv)). However, in no case will activities that prepare the natural resource itself for export, including those that are designed to facilitate the transportation of the natural resource, be considered additional production activities for purposes of this section.

(4) Determination of fair market value. For purposes of this section, fair market value depends on all of the facts and circumstances as they exist relative to a party in any particular case. Where the products are sold to a related party in a transaction subject to section 482, the determination of fair market value under this section must be consistent with the arm's length price determined under section 482.

(5) Determination of gross income. To determine the amount of a taxpayer's gross income from sources within or without the United States, the taxpayer's gross receipts from sources within or without the United States determined under this paragraph (b) must be reduced by the cost of goods sold properly attributable to gross receipts from sources within or without the United States.

(6) Tax return disclosure. A taxpayer that determines the source of its income under paragraph (b)(2) of this section shall attach a statement to its return explaining the methodology used to determine fair market value under paragraph (b)(4) of this section, and explaining any additional production activities (as defined in paragraph (b)(3)(ii) of this section) performed by the taxpayer. In addition, the taxpayer must provide such other information as is required by § 1.863-3.

(7) Examples. The following examples illustrate the rules of this paragraph (b):

(i) Example 1. No additional production, foreign source gross receipts. U.S. Mines, a domestic corporation, operates a copper mine and mill in Country X. U.S. Mines extracts copper-bearing rocks from the ground and transports the rocks to the mill where the rocks are ground and processed to produce copper-bearing concentrate. The concentrate is transported to a port where it is dried in preparation for export, stored, and then shipped to purchasers in the United States. Because, under the facts and circumstances, none of U.S. Mines' activities constitute additional production activities, within the meaning of paragraph (b)(3)(ii) of this section, paragraph (b)(2) of this section does not apply, and under paragraph (b)(1) of this section, gross receipts from the sale of the concentrate will be treated as from sources without the United States.

(ii) Example 2. No additional production, U.S. source gross receipts. U.S. Gas, a domestic corporation, extracts natural gas within the United States, and transports the natural gas to a Country X port where it is liquefied in preparation for shipment. The liquefied natural gas is then transported via freighter and sold without additional production activities in a foreign country. Under paragraph (b)(3)(ii) of this section, liquefaction of natural gas is not an additional production activity because liquefaction prepares the natural gas for transportation. Therefore, under paragraph (b)(1) of this section, gross receipts from the sale of the liquefied natural gas will be treated as from sources within the United States.

(iii) Example 3. Production in United States, foreign sales. U.S. Gold, a domestic corporation, mines gold in Country X, produces gold jewelry using production assets located in the United States, and sells the jewelry in Country Y. Assume that the fair market value of the gold before the additional production activities in the United States is $40x and that U.S. Gold ultimately sells the gold jewelry in Country Y for $100x. Under paragraph (b)(2) of this section, $40x of U.S. Gold's gross receipts will be treated as from sources without the United States, and the remaining $60x of gross receipts will be treated as from sources within the United States under § 1.863-3.

(iv) Example 4. Production and sales in United States. U.S. Oil, a domestic corporation, extracts oil in Country X, transports the oil via a pipeline to the United States, refines the oil using production assets located in the United States, and sells the refined product in the United States to unrelated persons. Assume that the fair market value of the oil before refinement in the United States is $80x and U.S. Oil ultimately sells the refined product for $100x. Under paragraph (b)(2) of this section, $80x of gross receipts will be treated as from sources without the United States, and the remaining $20x of gross receipts will be treated as from sources within the United States under § 1.863-3.

(v) Example 5. Additional production. The facts are the same as in paragraph (b)(7)(i) of this section (the facts in Example 1), except that U.S. Mines also operates a smelter in Country X. The concentrate output from the mill is transported to the smelter where it is transformed into smelted copper. The smelted copper is exported to purchasers in the United States. Under the facts and circumstances, all the processes applied to make copper concentrate are considered mining. Therefore, under paragraph (b)(2) of this section, gross receipts equal to the fair market value of the concentrate at the smelter will be treated as from sources without the United States. Under the facts and circumstances, the conversion of the concentrate into smelted copper is an additional production activity in a foreign country within the meaning of paragraph (b)(3)(ii) of this section. Therefore, the source of U.S. Mines's excess gross receipts will be determined under § 1.863-3, pursuant to paragraph (b)(2) of this section.

(c) Determination of taxable income. The taxpayer's taxable income from sources within or without the United States will be determined under the rules of §§ 1.861-8 through 1.861-14T for determining taxable income from sources within the United States.

(d) Scholarships, fellowship grants, grants, prizes and awards—(1) In general. This paragraph (d) applies to scholarships, fellowship grants, grants, prizes and awards. The provisions of this paragraph (d) do not apply to amounts paid as salary or other compensation for services.

(2) Source of income. The source of income from scholarships, fellowship grants, grants, prizes and awards is determined as follows:

(i) United States source income. Except as provided in paragraph (d)(2)(iii) of this section, scholarships, fellowship grants, grants, prizes and awards made by a U.S. citizen or resident, a domestic partnership, a domestic corporation, an estate or trust (other than a foreign estate or trust within the meaning of section 7701(a)(31)), the United States (or an instrumentality or agency thereof), a State (or any political subdivision thereof), or the District of Columbia shall be treated as income from sources within the United States.

(ii) Foreign source income. Scholarships, fellowship grants, grants, prizes and awards made by a foreign government (or an instrumentality, agency, or any political subdivision thereof), an international organization (as defined in section 7701(a)(18)), or a person other than a U.S. person (as defined in section 7701(a)(30)) shall be treated as income from sources without the United States.

(iii) Certain activities conducted outside the United States. Scholarships, fellowship grants, targeted grants, and achievement awards received by a person other than a U.S. person (as defined in section 7701(a)(30)) with respect to activities previously conducted (in the case of achievement awards) or to be conducted (in the case of scholarships, fellowships grants, and targeted grants) outside the United States shall be treated as income from sources without the United States.

(3) Definitions. The following definitions apply for purposes of this paragraph (d):

(i) Scholarships are defined in section 117 and the regulations thereunder.

(ii) Fellowship grants are defined in section 117 and the regulations thereunder.

(iii) Prizes and awards are defined in section 74 and the regulations thereunder.

(iv) Grants are amounts described in subparagraph (3) of section 4945(g) and the regulations thereunder, and are not amounts otherwise described in paragraphs (d)(3) (i), (ii), or (iii) of this section. For purposes of this paragraph (d), the reference to section 4945(g)(3) is applied without regard to the identity of the payor or recipient and without the application of the objective and nondiscriminatory basis test and the requirement of a procedure approved in advance.

(v) Targeted grants are grants—

(A) Issued by an organization described in section 501(c)(3), the United States (or an instrumentality or agency thereof), a State (or any political subdivision thereof), or the District of Columbia; and

(B) For an activity undertaken in the public interest and not primarily for the private financial benefit of a specific person or persons or organization.

(vi) Achievement awards are awards—

(A) Issued by an organization described in section 501(c)(3), the United States (or an instrumentality or agency thereof), a State (or political subdivision thereof), or the District of Columbia; and

(B) For a past activity undertaken in the public interest and not primarily for the private financial benefit of a specific person or persons or organization.

(4) Effective dates. The following are the effective dates concerning this paragraph (d):

(i) Scholarships and fellowship grants. This paragraph (d) is effective for scholarship and fellowship grant payments made after December 31, 1986. However, for scholarship and fellowship grant payments made after May 14, 1989, and before June 16, 1993, the residence of the payor rule of paragraph (d)(2) (i) and (ii) of this section may be applied without applying paragraph (d)(2)(iii) of this section.

(ii) Grants, prizes and awards. This paragraph (d) is effective for payments made for grants, prizes and awards, targeted grants, and achievement awards after September 25, 1995. However, the taxpayer may elect to apply the provisions of this paragraph (d) to payments made for grants, prizes and awards, targeted grants, and achievement awards after December 31, 1986, and before September 26, 1995.

(e) Residual interest in a REMIC—(1) REMIC inducement fees. An inducement fee (as defined in § 1.446-6(b)(2)) shall be treated as income from sources within the United States.

(2) Excess inclusion income and net losses. An excess inclusion (as defined in section 860E(c)) shall be treated as income from sources within the United States. To the extent of excess inclusion income previously taken into account with respect to a residual interest (reduced by net losses previously taken into account under this paragraph), a net loss (described in section 860C(b)(2)) with respect to the residual interest shall be allocated to the class of gross income and apportioned to the statutory grouping(s) or residual grouping of gross income to which the excess inclusion income was assigned.

(f) Applicability date. Paragraph (b) of this section applies to taxable years ending on or after December 23, 2019. However, a taxpayer may apply paragraph (b) of this section in its entirety for taxable years beginning after December 31, 2017, and ending before December 23, 2019, provided that the taxpayer and all persons related to the taxpayer (within the meaning of section 267 or 707) apply paragraph (b) of this section and §§ 1.863-2(b), 1.863-3, 1.863-8(b)(3)(ii), 1.864-5(a) and (b), 1.864-6(c)(2), and 1.865-3 in their entirety for the taxable year, and once applied, the taxpayer and all persons related to the taxpayer (within the meaning of section 267 or 707) continue to apply these regulations in their entirety for all subsequent taxable years. For regulations generally applicable to taxable years ending before December 23, 2019, see § 1.863-1 as contained in 26 CFR part 1 revised as of April 1, 2020. Paragraph (e)(2) of this section applies for taxable years ending after August 1, 2006.