[Code of Federal Regulations]
[Title 26, Volume 8]
[Revised as of April 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 26CFR1.666(a)-1A]

[Page 187-191]
 
                       TITLE 26--INTERNAL REVENUE
 
    CHAPTER I--INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY 
                               (CONTINUED)
 
PART 1_INCOME TAXES--Table of Contents
 
Sec. 1.666(a)-1A  Amount allocated.

    (a) In general. In the case of a trust that is subject to subpart C 
of part I of subchapter J of chapter 1 of the Code (relating to estates 
and trusts that may accumulate income or that distribute corpus), 
section 666(a) prescribes rules for determining the taxable years from 
which an accumulation distribution will be deemed to have been made and 
the extent to which the accumulation distribution is considered to 
consist of undistributed net income. In general, an accumulation 
distribution made in taxable years beginning after December 31, 1969, is 
deemed to have been made first from the earliest preceding taxable year 
of the trust for which there is undistributed

[[Page 188]]

net income. An accumulation distribution made in a taxable year 
beginning before January 1, 1970, is deemed to have been made first from 
the most recent preceding taxable year of the trust for which there is 
undistributed net income. See Sec. 1.665(e)-1A for the definition of 
``preceding taxable year.''
    (b) Distributions by domestic trusts--(1) Taxable years beginning 
after December 31, 1973. An accumulation distribution made by a trust 
(other than a foreign trust created by a U.S. person) in any taxable 
year beginning after December 31, 1973, is allocated to the preceding 
taxable years of the trust (defined in Sec. 1.665(e)-1A(a)(1)(ii) as 
those beginning after December 31, 1968) according to the amount of 
undistributed net income of the trust for such years. For this purpose, 
an accumulation distribution is first to be allocated to the earliest 
such preceding taxable year in which there is undistributed net income 
and shall then be allocated, beginning with the next earliest, to any 
remaining preceding taxable years of the trust. The portion of the 
accumulation distribution allocated to the earliest preceding taxable 
year is the amount of the undistributed net income for that preceding 
taxable year. The portion of the accumulation distribution allocated to 
any preceding taxable year subsequent to the earliest such preceding 
taxable year is the excess of the accumulation distribution over the 
aggregate of the undistributed net income for all earlier preceding 
taxable years. See paragraph (d) of this section for adjustments to 
undistributed net income for prior distributions. The provisions of this 
subparagraph may be illustrated by the following example:

    Example. In 1977, a domestic trust reporting on the calendar year 
basis makes an accumulation distribution of $33,000. Therefore, years 
before 1969 are ignored. In 1969, the trust had $6,000 of undistributed 
net income; in 1970, $4,000; in 1971, none; in 1972, $7,000; in 1973, 
$5,000; in 1974, $8,000; in 1975, $6,000; and $4,000 in 1976. The 
accumulation distribution is deemed distributed $6,000 in 1969, $4,000 
in 1970, none in 1971, $7,000 in 1972, $5,000 in 1973, $8,000 in 1974, 
and $3,000 in 1975.

    (2) Taxable years beginning after December 31, 1969, and before 
January 1, 1974. If a trust (other than a foreign trust created by a 
U.S. person) makes an accumulation distribution in a taxable year 
beginning after December 31, 1969, and before January 1, 1974, the 
distribution will be deemed distributed in the same manner as 
accumulation distributions qualifying under subparagraph (1) of this 
paragraph, except that the first year to which the distribution may be 
thrown back cannot be earlier than the fifth taxable year of the trust 
preceding the year in which the accumulation distribution is made. Thus, 
for example, in the case of an accumulation distribution made in the 
taxable year of a domestic trust which begins on January 1, 1972, the 
taxable year of the trust beginning on January 1, 1967, would be the 
first year in which the distribution was deemed made, assuming that 
there was undistributed net income for 1967. See also Sec. 1.665(e)-
1A(a)(1). The provisions of this subparagraph may be illustrated by the 
following example:

    Example. In 1973, a domestic trust, reporting on the calendar year 
basis, makes an accumulation distribution of $25,000. In 1968, the fifth 
year preceding 1973, the trust had $7,000 of undistributed net income; 
in 1969, none; in 1970, $12,000; in 1971, $4,000; in 1972, $4,000. The 
accumulation distribution is deemed distributed in the amounts of $7,000 
in 1968, none in 1969, $12,000 in 1970, $4,000 in 1971, and $2,000 in 
1972.

    (3) Taxable years beginning after December 31, 1968, and before 
January 1, 1970. Accumulation distributions made in taxable years of the 
trust beginning after December 31, 1968, and before January 1, 1970, are 
allocated to prior years according to Sec. 1.666(a)-1.
    (c) Distributions by foreign trusts-- (1) Foreign trusts created 
solely by U.S. persons--(i) Taxable years beginning after December 31, 
1969. If a foreign trust created by a U.S. person makes an accumulation 
distribution in any taxable year beginning after December 31, 1969, the 
distribution is allocated to the trust's preceding taxable years 
(defined in Sec. 1.665(e)-1A(a)(2) as those beginning after Dec. 31, 
1953, and ending after Aug. 16, 1954) according to the amount of 
undistributed net income of the trust for such years. For this purpose, 
an accumulation distribution is first allocated to the earliest such 
preceding

[[Page 189]]

taxable year in which there is undistributed net income and shall then 
be allocated in turn, beginning with the next earliest, to any remaining 
preceding taxable years of the trust. The portion of the accumulation 
distribution allocated to the earliest preceding taxable year is the 
amount of the undistributed net income for that preceding taxable year. 
The portion of the accumulation distribution allocated to any preceding 
taxable year subsequent to the earliest such preceding taxable year is 
the excess of the accumulation distribution over the aggregate of the 
undistributed net income for all earlier preceding taxable years. See 
paragraph (d) of this section for adjustments to undistributed net 
income for prior distributions. The provisions of this subdivision may 
be illustrated by the following example:

    Example. In 1971, a foreign trust created by a U.S. person, 
reporting on the calendar year basis, makes an accumulation distribution 
of $50,000. In 1961, the trust had $12,000 of undistributed net income; 
in 1962, none; in 1963, $10,000; in 1964, $8,000; in 1965, $5,000; in 
1966, $14,000; in 1967, none; in 1968, $3,000; in 1969, $2,000; and in 
1970, $1,000. The accumulation distribution is deemed distributed in the 
amounts of $12,000 in 1961, none in 1962, $10,000 in 1963, $8,000 in 
1964, $5,000 in 1965, $14,000 in 1966, none in 1967, and $1,000 in 1968.

    (ii) Taxable years beginning after December 31, 1968, and before 
January 1, 1970. Accumulation distributions made in taxable years of the 
trust beginning after December 31, 1968, and before January 1, 1970, are 
allocated to prior years according to Sec. 1.666(a)-1.
    (2) Foreign trusts created partly by U.S. persons--(i) Taxable years 
beginning after December 31, 1969. If a trust that is in part a foreign 
trust created by a U.S. person and in part a foreign trust created by a 
person other than a U.S. person makes an accumulation distribution in 
any year after December 31, 1969, the distribution is deemed made from 
the undistributed net income of the foreign trust created by a U.S. 
person in the proportion that the total undistributed net income for all 
preceding years of the foreign trust created by the U.S. person bears to 
the total undistributed net income for all years of the entire foreign 
trust. In addition, such distribution is deemed made from the 
undistributed net income of the foreign trust created by a person other 
than a U.S. person in the proportion that the total undistributed net 
income for all preceding years of the foreign trust created by a person 
other than a U.S. person bears to the total undistributed net income for 
all years of the entire foreign trust. Accordingly, an accumulation 
distribution of such a trust is composed of two portions with one 
portion relating to the undistributed net income of the foreign trust 
created by the U.S. person and the other portion relating to the 
undistributed net income of the foreign trust created by the person 
other than a U.S. person. For these purposes, each portion of an 
accumulation distribution made in any taxable year is first allocated to 
each of such preceding taxable years in turn, beginning with the 
earliest preceding taxable year, as defined in Sec. 1.665(e)-1A(a), of 
the applicable foreign trusts, to the extent of the undistributed net 
income for the such trust for each of those years. Thus, each portion of 
an accumulation distribution is deemed to have been made from the 
earliest accumulated income of the applicable trust. If the foreign 
trust created by a U.S. person makes an accumulation distribution in any 
year beginning after December 31, 1969, the distribution is included in 
the beneficiary's income for that year to the extent of the 
undistributed net income of the trust for the trust's preceding taxable 
years which began after December 31, 1953, and ended after August 16, 
1954. The provisions of this subdivision may be illustrated by the 
following example:

    Example. A trust is created in 1962 under the laws of Country X by 
the transfer to a trustee in Country X of property by both a U.S. person 
and a person other than a U.S. person. Both the trust and the only 
beneficiary of the trust (who is a U.S. person) report their taxable 
income on a calendar year basis. On March 31, 1974, the trust makes an 
accumulation distribution of $150,000 to the beneficiary. The 
distributable net income of both the portion of the trust which is a 
foreign trust created by a U.S. person and the portion of the trust 
which is a foreign trust created by a person other than a U.S. person 
for each year is computed in accordance with the provisions of paragraph 
(b)(3) of Sec. 1.643(d)-1 and the undistributed net income for each 
portion of the trust for each year is computed as described in paragraph 
(b) of

[[Page 190]]

Sec. 1.665(a)-1A. For taxable years 1962 through 1973, the portion of 
the trust which is a foreign trust created by a U.S. person and the 
portion of the trust which is a foreign trust created by a person other 
than a U.S. person had the following amounts of undistributed net 
income:

----------------------------------------------------------------------------------------------------------------
                                                                                            Undistributed net
                                                                    Undistributed net     income-portion of the
                              Year                                income-portion of the     trust created by a
                                                                    trust created by a     person other than a
                                                                       U.S. person             U.S. person
----------------------------------------------------------------------------------------------------------------
1962............................................................           $7,000                  $4,000
1963............................................................           12,000                   7,000
1964............................................................             None                    None
1965............................................................           11,000                   5,000
1966............................................................            8,000                   3,000
1967............................................................             None                    None
1968............................................................            4,000                   2,000
1969............................................................           17,000                   8,000
1970............................................................           16,000                   9,000
1971............................................................             None                    None
1972............................................................           25,000                  12,000
1973............................................................           20,000                  10,000
                                                                 -----------------------------------------------
 Totals.........................................................          120,000                  60,000
----------------------------------------------------------------------------------------------------------------


The accumulation distribution in the amount of $150,000 is deemed to 
have been distributed in the amount of $100,000 (120,000/
180,000x$150,000) from the portion of the trust which is a foreign trust 
created by a U.S. person and in the amount of $39,000, which is less 
than $50,000 (60,000/180,000x$150,000), from the portion of the trust 
which is a foreign trust created by a person other than a U.S. person 
computed as follows:

----------------------------------------------------------------------------------------------------------------
                                                                                          Throwback to preceding
                                                                        Throwback to     years of portion of the
                                                                     preceding years of    entire foreign trust
                               Year                                    foreign trust      which is not a foreign
                                                                     created by a U.S.   trust created by a U.S.
                                                                           person                 person
----------------------------------------------------------------------------------------------------------------
1962..............................................................          $7,000                   None
1963..............................................................          12,000                   None
1964..............................................................            None                   None
1965..............................................................         $11,000                   None
1966..............................................................           8,000                   None
1967..............................................................            None                   None
1968..............................................................           4,000                   None
1969..............................................................          17,000                 $8,000
1970..............................................................          16,000                  9,000
1971..............................................................            None                   None
1972..............................................................         $25,000                $12,000
1973..............................................................            None                 10,000
                                                                   ---------------------------------------------
 Totals...........................................................         100,000                 39,000
----------------------------------------------------------------------------------------------------------------

Pursuant to this paragraph, the accumulation distribution in the amount 
of $100,000 from the portion of the trust which is a foreign trust 
created by a U.S. person is included in the beneficiary's income for 
1974, as the amount represents undistributed net income of the trust for 
the trust's preceding taxable years which began after December 31, 1953, 
and ended after August 16, 1954. The accumulation distribution in the 
amount of $50,000 from the portion of the trust which is a foreign trust 
created by a person other than a U.S. person is included in the 
beneficiary's income for 1974 to the extent of the undistributed net 
income of the trust for the preceding years beginning after December 31, 
1968. Accordingly, with respect to the portion of the trust which is a 
foreign trust created by a person other than a U.S. person, only the 
undistributed net income for the years 1969 through 1973, which totals 
$39,000, is includible in the beneficiary's income for 1974. Thus, of 
the $150,000 distribution made in 1974, the beneficiary is required to 
include a total of $139,000 in his income for 1974. The balance of 
$11,000 is deemed to represent a distribution of corpus.

    (ii) Taxable years beginning after December 31, 1968, and before 
January 1, 1970. Accumulation distributions made in taxable years of the 
trust beginning after December 31, 1968, and before January 1, 1970, are 
allocated to prior years according to Sec. 1.666(a)-1.
    (3) Foreign trusts created by non-U.S. persons. To the extent that a 
foreign trust is a foreign trust created by a person other than a U.S. 
person, an accumulation distribution is included in the beneficiary's 
income for the year paid, credited, or required to be distributed to the 
extent provided under paragraph (b) of this section.
    (d) Reduction of undistributed net income for prior accumulation 
distributions. For the purposes of allocating to any preceding taxable 
year an accumulation distribution of the taxable year, the undistributed 
net income of such preceding taxable year is reduced by the amount from 
such year deemed distributed in any accumulation distribution of 
undistributed net income made in any taxable year intervening between 
such preceding taxable year and the taxable year. Accordingly, for 
example, if a trust has undistributed net income for 1974 and makes 
accumulation distributions during the taxable years 1978 and 1979, in 
determining that part of the 1979 accumulation distribution that is 
thrown back to 1974 the undistributed net income for 1974 is first 
reduced by the amount of the undistributed net income for 1974 deemed 
distributed in the 1978 accumulation distribution.
    (e) Rule when no undistributed net income. If, before the 
application of the provisions of subpart D to an accumulation 
distribution for the taxable

[[Page 191]]

year, there is no undistributed net income for a preceding taxable year, 
then no portion of the accumulation distribution is undistributed net 
income deemed distributed on the last day of such preceding taxable 
year. Thus, if an accumulation distribution is made during the taxable 
year 1975 from a trust whose earliest preceding taxable year is taxable 
year 1970, and the trust had no undistributed net income for 1970, then 
no portion of the 1975 accumulation distribution is undistributed net 
income deemed distributed on the last day of 1970.

[T.D. 7204, 37 FR 17143, Aug. 25, 1972]