Treasury Regulations · 26 CFR
§ 1.665(a)-1. Undistributed net income.
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. § 665(a)
Cite as 26 CFR § 1.665(a)-1
At a glance
Read from the text and its source citation. Not part of the regulation.
- Status
- In the current eCFR
- Issued
- T.D. 6989
- Issued under
- 26 U.S.C. § 665(a)
- Length
- 1,434 words · about 6 min to read
- Defines
- 1 term
- Cross-references
- cites 7 Code sections and 3 regulations; cited by 1
The application of the rule in this paragraph to the first year of a trust in which income is accumulated may be illustrated by the following example:
Assume that under the terms of the trust, $10,000 of income is required to be distributed currently to A and the trustee has discretion to make additional distributions to A. During the taxable year 1954 the trust had distributable net income of $30,100 derived from royalties and the trustee made distributions of $20,000 to A. The taxable income of the trust is $10,000 on which a tax of $2,640 is paid. The undistributed net income of the trust as of the close of the taxable year 1954 is $7,460 computed as follows:
| Distributable net income | $30,100 | |
| Less: | ||
| Income currently distributable to A | $10,000 | |
| Other amounts distributed to A | 10,000 | |
| Taxes imposed on the trust (see § 1.665(d)-1) | 2,640 | |
| 22,640 | ||
| Undistributed net income | 7,460 | |
See also paragraphs (e)(1) and (f)(1) of § 1.668(b)-2 for additional illustrations of the application of the rule in this paragraph to the first year of a trust in which income is accumulated.
A trust was created in 1952 under the laws of Country X by the transfer to a trustee in Country X of money or property by a U.S. person. The entire trust constitutes a foreign trust created by a U.S. person. The governing instrument of the trust provides that $7,000 of income is required to be distributed currently to a U.S. beneficiary and gives the trustee discretion to make additional distributions to the beneficiary. During the taxable year 1963 the trust had income of $10,000 from dividends of a U.S. corporation (on which Federal income taxes of $3,000 were imposed pursuant to the provisions of section 871 and withheld under section 1441 resulting in the receipt by the trust of cash in the amount of $7,000), $20,000 in capital gains from the sale of stock of a Country Y corporation, and $30,000 from dividends of a Country X corporation, none of the gross income of which was derived from sources within the United States. The trustee did not file a U.S. income tax return for the taxable year 1963. The distributable net income of the trust before distributions to the beneficiary for 1963 is $60,000 ($57,000 of which is cash). During 1963 the trustee made distributions to the U.S. beneficiary equaling one-half of the trust's distributable net income or $30,000. Thus, the U.S. beneficiary is treated as having had distributed to him $5,000 (composed of $3,500 as a cash distribution and $1,500 as the tax imposed pursuant to the provisions of section 871 and withheld under section 1441), representing one-half of the income from U.S. sources; $10,000 in cash, representing one-half of the capital gains from the sale of stock of the Country Y corporation; and $15,000 in cash, representing one-half of the income from Country X sources for a total of $30,000. The undistributed net income of the trust at the close of taxable year 1963 is $28,500 computed as follows:
| Distributable net income | $60,000 | |
| Less: | ||
| (1) Amounts distributed to the beneficiary— | ||
| Income currently distributed to the beneficiary | $7,000 | |
| Other amounts distributed to the beneficiary | 21,500 | |
| Taxes under sec. 871 deemed distributed to the beneficiary | 1,500 | |
| Total amounts distributed to the beneficiary | 30,000 | |
| (2) Amount of taxes imposed on the trust under chapter 1 of the Code (See § 1.665(d)-1) | 1,500 | |
| Total | 31,500 | |
| Undistributed net income | 28,500 | |
The facts are the same as in example 1 except that property has been transferred to the trust by a person other than a U.S. person, and during 1963 the foreign trust created by a U.S. person was 60 percent of the entire foreign trust. The trustee paid no income taxes to Country X in 1963.
(1) The undistributed net income of the foreign trust created by a U.S. person for 1963 is $17,100, computed as follows:
| Distributable net income (60% of each item of gross income of entire trust): | ||
| 60% of $10,000 U.S. dividends | $6,000 | |
| 60% of $20,000 Country X capital gains | 12,000 | |
| 60% of $30,000 Country X dividends | 18,000 | |
| Total | 36,000 | |
| Less: | ||
| (i) Amounts distributed to the beneficiary— | ||
| Income currently distributed to the beneficiary (60% of $7,000) | $4,200 | |
| Other amounts distributed to the beneficiary (60% of $21,500) | 12,900 | |
| Taxes under sec. 871 deemed distributed to the beneficiary (60% of $1,500) | 900 | |
| Total amounts distributed to the beneficiary | 18,000 | |
| (ii) Amount of taxes imposed on the trust under chapter 1 of the Code (See § 1.665(d)-1) (60% of $1,500) | $900 | |
| Total | $18,900 | |
| Undistributed net income | 17,100 | |
(2) The undistributed net income of the portion of the entire trust which is not a foreign trust created by a U.S. person for 1963 is $11,400, computed as follows:
| Distributed net income (40% of each item of gross income of entire trust) | ||
| 40% of $10,000 U.S. dividends | $4,000 | |
| 40% of $20,000 Country X capital gains | 8,000 | |
| 40% of Country X dividends | 12,000 | |
| Total | 24,000 | |
| Less: | ||
| (i) Amounts distributed to the beneficiary— | ||
| Income currently distributed to the beneficiary (40% of $7,000) | $2,800 | |
| Other amounts distributed to the beneficiary (40% of $21,500) | 8,600 | |
| Taxes under sec. 871 deemed distributed to the beneficiary (40% of $1,500) | 600 | |
| Total amounts distributed to the beneficiary | 12,000 | |
| (ii) Amount of taxes imposed on the trust under chapter 1 of the Code (See § 1.665(d)-1) (40% of $1,500) | $600 | |
| Total | $12,600 | |
| Undistributed net income | 11,400 | |
[T.D. 6989, 34 FR 733, 741, Jan. 17, 1969]
Terms defined here
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Cross-references
Computed from the citations in the text of 26 CFR.
Code sections it cites
- § 643 Definitions applicable to subparts A, B, C, and D
- § 661 Deduction for estates and trusts accumulating income or distributing corpus
- § 871 Tax on nonresident alien individuals
- § 1441 Withholding of tax on nonresident aliens
- § 666 Accumulation distribution allocated to preceding years
- § 665 Definitions applicable to subpart D
- § 663 Special rules applicable to sections 661 and 662
Regulations it cites
- § 1.665(d)-1 Taxes imposed on the trust.
- § 1.668(b)-2 Illustration of the provisions of subpart D.
- § 1.643(a)-6 Income of foreign trust.
Cited by 1 other regulation
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.
- Date not givenIssued by T.D. 6989 (34 FR 733)
Where it sits in 26 CFR
- Subchapter A Income tax
- Part 1 Income taxes
- Treatment of excess distributions of trusts applicable to taxable years beginning before january 1, 1969
Nearby sections
- § 1.665(a)-0 Excess distributions by trusts; scope of subpart D.
- § 1.665(a)-1 Undistributed net income.
- § 1.665(b)-1 Accumulation distributions of trusts other than certain foreign trusts; in general.
- § 1.665(b)-2 Exclusions from accumulation distributions in the case of trusts (other than a foreign trust created by a U.S. person).
- § 1.665(b)-3 Exclusions under section 663(a)(1).
- § 1.665(c)-1 Accumulation distributions of certain foreign trusts; in general.