Treasury Regulations · 26 CFR
§ 1.861-8. Computation of taxable income from sources within the United States and from other sources and activities.
Regulation text, no changes From the eCFR, current as of October 15, 2026. The eCFR is an authoritative but unofficial editorial compilation of the Code of Federal Regulations; the official text is the annual CFR on govinfo. Compare it with this section on ecfr.gov (external site) or the official annual CFR on govinfo (external site).
Regulation under 26 U.S.C. § 861
Cite as 26 CFR § 1.861-8
At a glance
Read from the text and its source citation. Not part of the regulation.
- Status
- In the current eCFR
- Issued
- January 6, 1977 by T.D. 7456
- Issued under
- 26 U.S.C. § 861
- Length
- 19,060 words · about 83 min to read
- Defines
- 16 terms
- Cross-references
- cites 54 Code sections and 31 regulations; cited by 62
In the instances provided in §§ 1.863-3 and 1.863-4 with respect to the activities described in (A), (B), and (C) of this subdivision, this section is applicable only in determining worldwide taxable income attributable to these activities.
| To gross income from domestic sales: $150,000x × ($1,000,000x/$1,500,000x) | $100,000x |
| To gross income from foreign sales: $150,000x × ($500,000x/$1,500,000x) | 50,000x |
| Total | 150,000x |
| To gross income from domestic sales: $150,000x × ($1,000,000x/$1,600,000x) | $93,750x |
| To gross income from foreign sales: | |
| $150,000x × ($600,000x/$1,600,000x) | 56,250x |
| Total | 150,000x |
| Personnel department expenses | $50,000x |
| Training department expenses | 35,000x |
| General and administrative expenses | 55,000x |
| President's salary | 40,000x |
| Sales manager's salary | 20,000x |
| Total | 200,000x |
| Apportionment of the $200,000x expense to the statutory grouping of gross income: $200,000x × [$500,000x/($500,000x + $750,000x)] | $80,000x |
| Apportionment of the $200,000x expense to the residual grouping of gross income: $200,000x × [$750,000x/($500,000x + $750,000x)] | 120,000x |
| Total apportioned supportive expense | 200,000x |
| Apportionment of the $200,000x expense to the statutory grouping of gross income: | |
| President's salary: $40,000x × 5% | $2,000x |
| Sales manager's salary: $20,000x × 10% | 2,000x |
| Remaining expenses: $140,000x × [$500,000x/($500,000x + $750,000x)] | 56,000x |
| Subtotal: Apportionment of expense to statutory grouping | 60,000x |
| Apportionment of the $200,000x expense to the residual grouping of gross income: | |
| President's salary: $40,000x × 95% | 38,000x |
| Sales manager's salary: $20,000x × 90% | 18,000x |
| Remaining expenses: $140,000x × [$750,000x/($500,000x + $750,000x)] | 84,000x |
| Subtotal: Apportionment of expense to residual grouping | 140,000x |
| Total: Apportioned supportive expense | 200,000x |
| Apportionment of general and administrative expense to the statutory grouping, gross income from sources within the United States: $100,000x × [$200,000x/($200,000x + $400,000x + $400,000x)] | $20,000x |
| Apportionment of general and administrative expense to the residual grouping, gross income from sources without the United States: $100,000x × [($400,000x + $400,000x)/($200,000x + $400,000x + $400,000x)] | 80,000x |
| Total apportioned general and administrative expense | 100,000x |
| State income tax deduction apportioned to foreign source foreign branch category income (statutory grouping): $69,000x × ($150,000x/$950,000x) | $10,895x |
| State income tax deduction apportioned to income from sources within the United States (residual grouping): $69,000x × ($800,000x/$950,000x) | 58,105x |
| Total apportioned state income tax deduction | 69,000x |
| States B and C income tax deduction apportioned to foreign source foreign branch category income (statutory grouping): $14,000x × ($150,000x/$400,000x) | $5,250x |
| States B and C income tax deduction apportioned to income from sources within the United States (residual grouping): $14,000x × ($250,000x/$400,000x) | 8,750x |
| Total apportioned state income tax deduction | 14,000x |
[T.D. 7456, 42 FR 1195, Jan. 6, 1977]
For Federal Register citations affecting § 1.861-8, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.
Terms defined here
Where the text says “the term … means”. Select a term to jump to its definition.
- exempt asset § 1.861-8(d)(2)(ii)(A)
- exempt asset § 1.861-8(d)(2)(ii)(C)(2)(i)
- exempt asset § 1.861-8(d)(2)(ii)(C)(2)(ii)
- exempt assets § 1.861-8(d)(2)(v)(A)(1)
- exempt assets § 1.861-8(d)(2)(v)(A)(2)
- exempt income § 1.861-8(d)(2)(ii)(A)
- exempt income § 1.861-8(d)(2)(ii)(B)
- exempt income § 1.861-8(d)(2)(ii)(C)(1)
- exempt income § 1.861-8(d)(2)(v)(A)(1)
- exempt income § 1.861-8(d)(2)(v)(A)(2)
- GILTI inclusion stock § 1.861-8(d)(2)(ii)(C)(3)
- gross FDDEI, § 1.861-8(d)(2)(ii)(C)(1)
- gross foreign-derived deduction eligible income, § 1.861-8(d)(2)(ii)(C)(1)
- section 861 regulations § 1.861-8(a)(1)
- statutory grouping § 1.861-8(a)(4)
- statutory grouping of gross income § 1.861-8(a)(4)
Cross-references
Computed from the citations in the text of 26 CFR.
Code sections it cites
- § 861 Income from sources within the United States
- § 862 Income from sources without the United States
- § 61 Gross income defined
- § 864 Definitions and special rules
- § 267 Losses, expenses, and interest with respect to transactions between related taxpayers
- § 1563 Definitions and special rules
- § 243 Dividends received by corporations
- § 245 Dividends received from certain foreign corporations
- § 951A Net CFC tested income included in gross income of United States shareholders
- § 78 Gross up for deemed paid foreign tax credit
- § 250 Foreign-derived deduction eligible income and net CFC tested income
- § 367 Foreign corporations
- § 904 Limitation on credit
- § 245A Deduction for foreign source-portion of dividends received by domestic corporations from specified 10-percent owned foreign corporations
- § 911 Citizens or residents of the United States living abroad
- § 965 Treatment of deferred foreign income upon transition to participation exemption system of taxation
- § 959 Exclusion from gross income of previously taxed earnings and profits
- § 801 Tax imposed
- § 805 General deductions
- § 807 Rules for certain reserves
- § 831 Tax on insurance companies other than life insurance companies
- § 832 Insurance company taxable income
- § 834 Determination of taxable investment income
- § 812 Definition of company’s share and policyholder’s share
Show 30 more
- § 803 Life insurance gross income
- § 818 Other definitions and special rules
- § 804 Life insurance deductions
- § 482 Allocation of income and deductions among taxpayers
- § 734 Adjustment to basis of undistributed partnership property where section 754 election or substantial basis reduction
- § 164 Taxes
- § 172 Net operating loss deduction
- § 163 Interest
- § 213 Medical, dental, etc., expenses
- § 151 Allowance of deductions for personal exemptions
- § 170 Charitable, etc., contributions and gifts
- § 871 Tax on nonresident alien individuals
- § 873 Deductions
- § 954 Foreign base company income
- § 58 Denial of certain losses
- § 901 Taxes of foreign countries and of possessions of United States
- § 907 Special rules in case of foreign oil and gas income
- § 931 Income from sources within Guam, American Samoa, or the Northern Mariana Islands
- § 936 Repealed
- § 933 Income from sources within Puerto Rico
- § 934 Limitation on reduction in income tax liability incurred to the Virgin Islands
- § 935 Repealed
- § 952 Subpart F income defined
- § 953 Insurance income
- § 999 Reports by taxpayers; determinations
- § 994 Inter-company pricing rules
- § 863 Special rules for determining source
- § 7602 Examination of books and witnesses
- § 905 Applicable rules
- § 951 Amounts included in gross income of United States shareholders
Regulations it cites
- § 1.861-8T Computation of taxable income from sources within the United States and from other sources and activities (temporary).
- § 1.861-14T Special rules for allocating and apportioning certain expenses (other than interest expense) of an affiliated group of corporations (temporary).
- § 1.861-9T Allocation and apportionment of interest expense (temporary).
- § 1.861-9 Allocation and apportionment of interest expense and rules for asset-based apportionment.
- § 1.861-12T Characterization rules and adjustments for certain assets (temporary).
- § 1.861-12 Characterization rules and adjustments for certain assets.
- § 1.1502-12 Separate taxable income.
- § 1.861-11T Special rules for allocating and apportioning interest expense of an affiliated group of corporations (temporary).
- § 1.250(b)-1 Computation of foreign-derived intangible income (FDII).
- § 1.951A-1 General provisions.
- § 1.1502-51 Consolidated section 951A.
- § 1.861-13 Special rules for characterization of controlled foreign corporation stock.
- § 1.911-6 Disallowance of deductions, exclusions, and credits.
- § 1.965-6 Computation of foreign income taxes deemed paid and allocation and apportionment of deductions.
- § 1.951A-6 Adjustments related to tested losses.
- § 1.861-17 Allocation and apportionment of research and experimental expenditures.
- § 1.482-9 Methods to determine taxable income in connection with a controlled services transaction.
- § 1.482-1 Allocation of income and deductions among taxpayers.
- § 301.7701-2 Business entities; definitions.
- § 1.861-14 Special rules for allocating and apportioning certain expenses (other than interest expense) of an affiliated group of corporations.
- § 1.861-20 Allocation and apportionment of foreign income taxes.
- § 1.1502-4 Consolidated foreign tax credit.
- § 1.865-1 Loss with respect to personal property other than stock.
- § 1.904(g)-3 Ordering rules for the allocation of net operating losses, net capital losses, U.S. source losses, and separate limitation losses, and for the recapture of separate limitation losses, overall foreign losses, and overall domestic losses.
Show 7 more
- § 1.904-4 Separate application of section 904 with respect to certain categories of income.
- § 1.904-5 Look-through rules as applied to controlled foreign corporations and other entities.
- § 1.882-5 Determination of interest deduction.
- § 1.935-1 Coordination of individual income taxes with Guam and the Northern Mariana Islands.
- § 1.863-3 Allocation and apportionment of income from certain sales of inventory.
- § 1.861-7 Sale of personal property.
- § 1.904(b)-3 Disregard of certain dividends and deductions under section 904(b)(4).
Cited by 62 other regulations
- § 1.59A-3 Base erosion payments and base erosion tax benefits.
- § 1.163(j)-10 Allocation of interest expense, interest income, and other items of expense and gross income to an excepted trade or business.
- § 1.199A-10 Allocation of cost of goods sold (COGS) and other deductions to domestic production gross receipts (DPGR), and other rules.
- § 1.250(b)-1 Computation of foreign-derived intangible income (FDII).
- § 1.406-1 Treatment of certain employees of foreign subsidiaries as employees of the domestic corporation.
- § 1.482-9 Methods to determine taxable income in connection with a controlled services transaction.
- § 1.704-1 Partner's distributive share.
- § 1.721(c)-3 Gain deferral method.
- § 1.857-3 Net income from foreclosure property.
- § 1.861-1 Income from sources within the United States.
- § 1.861-8T Computation of taxable income from sources within the United States and from other sources and activities (temporary).
- § 1.861-9 Allocation and apportionment of interest expense and rules for asset-based apportionment.
- § 1.861-10T Special allocations of interest expense (temporary).
- § 1.861-12 Characterization rules and adjustments for certain assets.
- § 1.861-13 Special rules for characterization of controlled foreign corporation stock.
- § 1.861-14 Special rules for allocating and apportioning certain expenses (other than interest expense) of an affiliated group of corporations.
- § 1.861-14T Special rules for allocating and apportioning certain expenses (other than interest expense) of an affiliated group of corporations (temporary).
- § 1.861-17 Allocation and apportionment of research and experimental expenditures.
- § 1.861-20 Allocation and apportionment of foreign income taxes.
- § 1.862-1 Income specifically from sources without the United States.
- § 1.863-1 Allocation of gross income under section 863(a).
- § 1.863-3 Allocation and apportionment of income from certain sales of inventory.
- § 1.863-3A Income from the sale of personal property derived partly from within and partly from without the United States.
- § 1.863-4 Certain transportation services.
Show 38 more
- § 1.863-8 Source of income derived from space and ocean activity under section 863(d).
- § 1.863-9 Source of income derived from communications activity under section 863(a), (d), and (e).
- § 1.865-1 Loss with respect to personal property other than stock.
- § 1.865-2 Loss with respect to stock.
- § 1.873-1 Deductions allowed nonresident alien individuals.
- § 1.882-4 Allowance of deductions and credits to foreign corporations.
- § 1.884-1 Branch profits tax.
- § 1.904-4 Separate application of section 904 with respect to certain categories of income.
- § 1.904-5 Look-through rules as applied to controlled foreign corporations and other entities.
- § 1.904-6 Allocation and apportionment of foreign income taxes.
- § 1.904(b)-3 Disregard of certain dividends and deductions under section 904(b)(4).
- § 1.904(f)-1 Overall foreign loss and the overall foreign loss account.
- § 1.904(g)-1 Overall domestic loss and the overall domestic loss account.
- § 1.904(g)-3 Ordering rules for the allocation of net operating losses, net capital losses, U.S. source losses, and separate limitation losses, and for the recapture of separate limitation losses, overall foreign losses, and overall domestic losses.
- § 1.905-2 Conditions of allowance of credit.
- § 1.907(c)-1 Definitions relating to FOGEI and FORI (for taxable years beginning after December 31, 1982).
- § 1.907(c)-2 Section 907(c)(3) items (for taxable years beginning after December 31, 1982).
- § 1.911-6 Disallowance of deductions, exclusions, and credits.
- § 1.931-1 Exclusion of certain income from sources within Guam, American Samoa, or the Northern Mariana Islands.
- § 1.932-1 Coordination of United States and Virgin Islands income taxes.
- § 1.933-1 Exclusion of certain income from sources within Puerto Rico.
- § 1.934-1 Limitation on reduction in income tax liability incurred to the Virgin Islands.
- § 1.936-6 Intangible property income when an election out is made: Cost sharing and profit split options; covered intangibles.
- § 1.951A-2 Tested income and tested loss.
- § 1.954-2 Foreign personal holding company income.
- § 1.960-1 Overview, definitions, and computational rules for determining foreign income taxes deemed paid under section 960(a), (b), and (d).
- § 1.962-1 Limitation of tax for individuals on amounts included in gross income under section 951(a).
- § 1.965-7 Elections, payment, and other special rules.
- § 1.992-3 Deficiency distributions to meet qualification requirements.
- § 1.994-1 Inter-company pricing rules for DISC's.
- § 1.995-6 Taxable income attributable to military property.
- § 1.1275-4 Contingent payment debt instruments.
- § 1.1294-1T Election to extend the time for payment of tax on undistributed earnings of a qualified electing fund (temporary).
- § 1.1297-1 Definition of passive foreign investment company.
- § 1.1502-4 Consolidated foreign tax credit.
- § 1.1503(d)-7 Examples.
- § 3.2 Ceiling on deposits.
- § 4.954-2 Foreign personal holding company income; taxable years beginning after December 31, 1986.
Amendment history
From the source citation at the end of the section, newest first. T.D. is a Treasury decision; FR is the Federal Register.
- Issued by T.D. 7456 (42 FR 1195)
Where it sits in 26 CFR
- Subchapter A Income tax
- Part 1 Income taxes
- Determination of Sources of Income
Nearby sections
- § 1.861-4 Compensation for labor or personal services.
- § 1.861-5 Rentals and royalties.
- § 1.861-6 Sale of real property.
- § 1.861-7 Sale of personal property.
- § 1.861-8 Computation of taxable income from sources within the United States and from other sources and activities.
- § 1.861-8T Computation of taxable income from sources within the United States and from other sources and activities (temporary).
- § 1.861-9 Allocation and apportionment of interest expense and rules for asset-based apportionment.
- § 1.861-9T Allocation and apportionment of interest expense (temporary).
- § 1.861-10 Special allocations of interest expense.