1.47-1—Recomputation of credit allowed by section 38.

(a) General rule— (1) In general. If during the taxable year any section 38 property the basis (or cost) of which was taken into account, under paragraph (a) of § 1.46-3, in computing the taxpayer's qualified investment is disposed of, or otherwise ceases to be section 38 property or becomes public utility property (as defined in paragraph (g) of § 1.46-3) or is a qualifying commuter highway vehicle (as defined in paragraph (a) of § 1.46-11) which undergoes a change in use (as defined in paragraph (m)(2) of this section) with respect to the taxpayer, before the close of the estimated useful life (as determined under subparagraph (2)(i) of this paragraph) which was taken into account in computing such qualified investment, then the credit earned for the credit year (as defined in subdivision (ii)(a) of this subparagraph) shall be recomputed under the principles of paragraph (a) of § 1.46-1 and paragraph (a) of § 1.46-3 substituting, in lieu of the estimated useful life of the property that was taken into account originally in computing qualified investment, the actual useful life of the property as determined under subparagraph (2)(ii) of this paragraph. There shall also be recomputed under the principles of §§ 1.46-1 and 1.46-2 the credit allowed for the credit year and for any other taxable year affected by reason of the reduction in credit earned for the credit year, giving effect to such reduction in the computation of carryovers or carrybacks of unused credit. If the recomputation described in the preceding sentence results in the aggregate in a decrease (taking into account any recomputations under this paragraph in respect of prior recapture years, as defined in subdivision (ii)(b) of this subparagraph) in the credits allowed for the credit year and for any other taxable year affected by the reduction in credit earned for the credit year, then the income tax for the recapture year shall be increased by the amount of such decrease in credits allowed. For treatment of such increase in tax, see paragraph (b) of this section. For rules relating to “disposition” and “cessation”, see § 1.47-2. For rules relating to certain exceptions to the application of this section, see § 1.47-3. For special rules in the case of an electing small business corporation (as defined in section 1371(b) ), an estate or trust, or a partnership, see respectively, §§ 1.47-4, 1.47-5, or 1.47-6. For rules applicable to energy property, see paragraph (h) of this section. For special rules relating to recomputation of credit allowed by section 38 if progress expenditure property (as defined in § 1.46-5(d)) ceases to be progress expenditure property with respect to the taxpayer, see paragraph (g) of this section.
(ii) For purposes of this section and §§ 1.47-2 through 1.47-6—
(a) The term “credit year” means the taxable year in which section 38 property was taken into account in computing a taxpayer's qualified investment.
(b) The term “recapture year” means the taxable year in which section 38 property the basis (or cost) of which was taken into account in computing a taxpayer's qualified investment is disposed of, or otherwise ceases to be section 38 property or becomes public utility property with respect to the taxpayer, before the close of the estimated useful life which was taken into account in computing such qualified investment.
(c) The term “recapture determination” means a recomputation made under this paragraph.
(2) Rules for applying subparagraph (1). For purposes of subparagraph (1) of this paragraph—
(i) In determining whether section 38 property is disposed of, or otherwise ceases to be section 38 property with respect to the taxpayer, before the close of the estimated useful life which was taken into account in computing the taxpayer's qualified investment, the term “estimated useful life” means the shortest life of the useful life category within which falls the estimated useful life which was assigned to such property under paragraph (e) of § 1.46-3. Thus, section 38 property which is assigned, under paragraph (e) of § 1.46-3, an estimated useful life of 6 years shall not be treated, for purposes of subparagraph (1) of this paragraph, as having been disposed of before the close of its estimated useful life if such property is sold 5 years (that is, the shortest life of the 5 years or more but less than 7 years useful life category) after the date on which it was placed in service. Likewise, section 38 property with an estimated useful life of 15 years which is placed in service on January 1, 1972, shall not be treated as having been disposed of before the close of its estimated useful life if such property is sold at any time after January 1, 1979 (that is, 7 years or more after the date on which it was placed in service).
(ii) In determining the recomputed qualified investment with respect to property which is disposed of or otherwise ceases to be section 38 property the term “actual useful life” means, except as otherwise provided in this section and §§ 1.47-2 through 1.47-6, the period beginning with the date on which the property was placed in service by the taxpayer and ending with the date of such disposition or cessation. See paragraph (c) of this section.
(iii) In determining the recomputed qualified investment with respect to property which ceases to be section 38 property with respect to the taxpayer after August 15, 1971, or which becomes public utility property after such date, such property shall be treated as if it were property described in section 50 at the time it was placed in service (whether or not it was property described in section 50 at such time). Thus, if property was placed in service on October 15, 1968, and was assigned an estimated useful life of 4 years, there would be no increase in tax under section 47 if the property were disposed of at any time after October 14, 1971, that is, 3 years or more after the property was placed in service.
(b) Increase in income tax and reduction of investment credit carryover— (1) Increase in tax. Except as provided in subparagraph (2) of this paragraph, any increase in income tax under this section shall be treated as income tax imposed on the taxpayer by chapter 1 of the Code for the recapture year notwithstanding that without regard to such increase the taxpayer has no income tax liability, has a net operating loss for such taxable year, or no income tax return was otherwise required for such taxable year.
(2) Special rule. Any increase in income tax under this section shall not be treated as income tax imposed on the taxpayer by chapter 1 of the Code for purposes of determining the amount of the credits allowable to such taxpayer under—
(i) Section 33 (relating to taxes of foreign countries and possessions of United States),
(ii) Section 34 (relating to dividends received by individuals before January 1, 1965),
(iii) Section 35 (relating to partially tax-exempt interest received by individuals),
(iv) Section 37 (relating to retirement income), and
(v) Section 38 (relating to investment in certain depreciable property).
(3) Reduction in credit allowed as a result of a net operating loss carryback. (i) If a net operating loss carryback from the recapture year or from any taxable year subsequent to the recapture year reduces the amount allowed as a credit under section 38 for any taxable year up to and including the recapture year, then there shall be a new recapture determination under paragraph (a) of this section for each recapture year affected, taking into account the reduced amount of credit allowed after application of the net operating loss carryback.
(ii) Subdivision (i) of this subparagraph may be illustrated by the following examples:

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Example 1. (a) X Corporation, which makes its return on the basis of a calendar year, acquired and placed in service on January 1, 1962, an item of section 38 property with a basis of $10,000 and an estimated useful life of 8 years. The amount of qualified investment with respect to such asset was $10,000. For the taxable year 1962, X Corporation's credit earned of $700 (7 percent of $10,000) was allowed under section 38 as a credit against its liability for tax of $700. In 1963 and 1964 X Corporation had no liability for tax and placed in service no section 38 property. On January 3, 1963, such item of section 38 property was sold to Y Corporation. Since the actual useful life of such item was only 1 year, there was a recapture determination under paragraph (a) of this section. The income tax imposed by chapter 1 of the Code on X Corporation for the taxable year 1963 was increased by the $700 decrease in its credit earned for the taxable year 1962 (that is, the $700 original credit earned minus zero recomputed credit earned). (b) For the taxable year 1965, X Corporation has a net operating loss which is carried back to the taxable year 1962 and reduces its liability for tax, as defined in paragraph (c) of § 1.46-1 , for such taxable year to $200. As a result of such net operating loss carryback, X Corporation's credit allowed under section 38 for the taxable year 1962 is limited to $200 and the excess of $500 ($700 credit earned minus $200 limitation based on amount of tax) is an investment credit carryover to the taxable year 1963. (c) For 1965, there is a recapture determination under subdivision (i) of this subparagraph for the 1963 recapture year. The $700 increase in the income tax imposed on X Corporation for the taxable year 1963 is redetermined to be $200 (that is, the $200 credit allowed after taking into account the 1965 net operating loss minus zero credit which would have been allowed taking into account the 1963 recapture determination). In addition, X Corporation's $500 investment credit carryover to the taxable year 1963 is reduced by $500 ($700 minus $200) to zero and X Corporation is entitled to a $500 refund of the tax paid as a result of the 1963 determination.

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Example 2. (a) X Corporation, which makes its returns on the basis of a calendar year, acquired and placed in service on January 1, 1962, an item of section 38 property with a basis of $10,000 and an estimated useful life of 8 years. The amount of qualified investment with respect to such asset was $10,000. For the taxable year 1962, X Corporation's credit earned of $700 (7 percent of $10,000) was allowed under section 38 as a credit against its liability for tax of $700. In 1963 and in 1964 X Corporation had no liability for tax and placed in service no section 38 property. On January 3, 1965, such item of section 38 property is sold to Y Corporation. For the taxable year 1965, X Corporation has a net operating loss which is carried back to the taxable year 1962 and reduces its liability for tax, as defined in paragraph (c) of § 1.46-1 , for such taxable year to $100. (b) As a result of such net operating loss carryback, X Corporation's credit allowed under section 38 for the taxable year 1962 is limited to $100 and the excess of $600 ($700 credit earned minus $100 limitation based on amount of tax) is an investment credit carryover to the taxable year 1963. (c) Since the actual useful life of the item of section 38 property sold to Y Corporation was only 3 years, there is a recapture determination under paragraph (a) of this section. X Corporation's $600 investment credit carryover to 1963 is reduced by $600 to zero. The income tax imposed by chapter 1 of the Code on X Corporation for the taxable year 1965 is increased by the $100 reduction in credit allowed by section 38 for 1962.
(4) Statement of recomputation. The taxpayer shall attach to his income tax return for the recapture year a separate statement showing in detail the computation of the increase in income tax imposed on such taxpayer by chapter 1 of the Code and the reduction in any investment credit carryovers.
(c) Date placed in service and date of disposition or cessation— (1) General rule. For purposes of this section and §§ 1.47-2 through 1.47-6, in determining the actual useful life of section 38 property—
(i) Such property shall be treated as placed in service on the first day of the month in which such property is placed in service. The month in which property is placed in service shall be determined under the principles of paragraph (d) of § 1.46-3.
(ii) If during the taxable year such property ceases to be section 38 property with respect to the taxpayer—
(a) As a result of the occurrence of an event on a specific date (for example, a sale, transfer, retirement or other disposition), such cessation shall be treated as having occurred on the actual date of such event.
(b) For any reason other than the occurrence of an event on a specific date (for example, because such property is used predominantly in connection with the furnishing of lodging during such taxable year), such cessation shall be treated as having occurred on the first day of such taxable year.
(2) Special rule. Notwithstanding subparagraph (1) of this paragraph, if a taxpayer uses an averaging convention (see § 1.167(a)(10)) in computing depreciation with respect to section 38 property, then, for purposes of this section and §§ 1.47-2 through 1.47-6, he may use the assumed dates of additions and retirements in determining the actual useful life of such property provided such assumed dates are used consistently for purposes of subpart B of part IV of subchapter A of chapter 1 of the Code with respect to all section 38 property for which such convention is used for purposes of depreciation. This subparagraph shall not apply in any case where from all the facts and circumstances it appears that the use of such assumed dates results in a substantial distortion of the investment credit allowed by section 38. Thus, for example, if the taxpayer computes depreciation under a convention under which the average of the beginning and ending balances of the asset account for the taxable year are taken into account, he may use July 1 as the assumed date of all additions and retirements to such account. Similarly, if the taxpayer computes depreciation under a convention under which the average of the beginning and ending balances of the asset account for each month is taken into account, he may use the date determined by reference to the weighted average of the monthly averages as the assumed date of all additions and retirements to such account.
(3) Example. This paragraph may be illustrated by the following example:

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Example. Assume that section 38 property is placed in service (within the meaning of paragraph (d) of § 1.46-3 ) on December 1, 1965 (thus, the credit is treated as being earned in 1965) but under the taxpayer's depreciation practice the period for depreciation with respect to such property begins on January 1, 1966, and that the property is actually retired on December 2, 1970. Under the general rule of subparagraph (1) of this paragraph, the property is treated as placed in service on December 1, 1965, and as ceasing to be section 38 property with respect to the taxpayer on December 2, 1970, even though under the taxpayer's depreciation practice the period for depreciation with respect to such property begins on January 1, 1966, and terminates on January 1, 1971. However, under the special rule of subparagraph (2) of this paragraph the taxpayer may determine the actual useful life of the property by reference to the assumed dates of January 1, 1966, and January 1, 1971.
(d) Examples. Paragraphs (a) through (c) of this section may be illustrated by the following examples:

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Example 1. (i) X Corporation, which makes its returns on the basis of the calendar year, acquired and placed in service on January 1, 1962, three items of section 38 property each with a basis of $12,000 and an estimated useful life of 15 years. The amount of qualified investment with respect to each such asset was $12,000. For the taxable year 1962, X Corporation's credit earned of $2,520 was allowed under section 38 as a credit against its liability for tax of $4,000. On December 2, 1965, one of the items of section 38 property is sold to Y Corporation. (ii) The actual useful life of the item of property which is sold on December 2, 1965, is three years and eleven months. The recomputed qualified investment with respect to such item of property is zero ($12,000 basis multiplied by zero applicable percentage) and X Corporation's recomputed credit earned for the taxable year 1962 is $1,680 (7 percent of $24,000). The income tax imposed by chapter 1 of the Code on X Corporation for the taxable year 1965 is increased by the $840 decrease in its credit earned for the taxable year 1962 (that is, $2,520 original credit earned minus $1,680 recomputed credit earned).
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Example 2. (i) The facts are the same as in example 1 and in addition on December 2, 1966, a second item of section 38 property placed in service in the taxable year 1962 is sold to Y Corporation. (ii) The actual useful life of the item of property which is sold on December 2, 1966, is four years and eleven months. The recomputed qualified investment with respect to such item of property is $4,000 ($12,000 basis multiplied by 331/3 percent applicable percentage) and X Corporation's recomputed credit earned for the taxable year 1962 is $1,120 (7 percent of $16,000). The income tax imposed by chapter 1 of the Code on X Corporation for the taxable year 1966 is increased by $560 (that is, $1,400 ($2,520 original credit earned minus $1,120 recomputed credit earned) reduced by the $840 increase in tax for 1965).

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Example 3. (i) The facts are the same as in example 1 except that for the taxable year 1962 X Corporation's liability for tax under section 46(a)(3) is only $1,520. Therefore, for such taxable year X Corporation's credit allowed under section 38 is limited to $1,520 and the excess of $1,000 ($2,520 credit earned minus $1,520 limitation based on amount of tax) is an unused credit. Of such $1,000 unused credit, $100 is allowed as a credit under section 38 for the taxable year 1963, $100 is allowed for 1964, and $800 is carried to the taxable year 1965. (ii) The actual useful life of the item of property which is sold on December 2, 1965, is three years and eleven months. The recomputed qualified investment with respect to such item of property is zero ($12,000 basis multiplied by zero applicable percentage) and X Corporation's recomputed credit earned for the taxable year 1962 is $1,680 (7 percent of $24,000). If such $1,680 recomputed credit earned had been taken into account in place of the $2,520 original credit earned, X's credit allowed for 1962 would have been $1,520, and of the $160 unused credit from 1962 $100 would have been allowed as a credit under section 38 for 1963, and $60 would have been allowed for 1964. X Corporation's $800 investment credit carryover to the taxable year 1965 is reduced by $800 to zero. The income tax imposed by chapter 1 of the Code on X Corporation for the taxable year 1965 is increased by $40 (that is, the aggregate reduction in the credits allowed by section 38 for 1962, 1963, and 1964).

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Example 4. (i) X Corporation, which makes its returns on the basis of the calendar year, acquired and placed in service on November 1, 1962, an item of section 38 property with a basis of $12,000 and an estimated useful life of 10 years. The amount of qualified investment with respect to such property was $12,000. For the taxable year 1962, X Corporation's credit earned of $840 was allowed under section 38 as a credit against its liability for tax of $840. For each of the taxable years 1963 and 1964 X Corporation's liability for tax was zero and its credit earned was $400; therefore, for each of such years its unused credit was $400. For the taxable year 1965 its liability for tax was $200 and its credit earned was zero; therefore, $200 of the $400 unused credit from 1963 was allowed as credit for 1965 and $600 ($200 from 1963 and $400 from 1964) is an investment credit carryover to 1966. On February 2, 1966, such item of section 38 property is sold to Y Corporation. (ii) The actual useful life of such item of property is three years and three months. The recomputed qualified investment with respect to such property is zero ($12,000 basis multipled by zero) and X Corporation's recomputed credit earned for the taxable year 1962 is zero. If such zero recomputed credit earned had been taken into account in place of the $840 original credit earned, the entire $400 unused credit from 1963 (including the $200 portion which was originally allowed as a credit for 1965) and the $400 unused credit from 1964 would have been allowed as investment credit carrybacks against X Corporation's liability for tax of $840 for 1962. (See § 1.46-2 for rules relating to the carryback of unused credits.) (iii) Therefore, the $600 carryover from 1963 and 1964 to 1966 is eliminated and the income tax imposed by chapter 1 of the Code on X Corporation for the taxable year 1966 is increased by the $240 aggregate reduction in the credits allowed by section 38 for the taxable years 1962 and 1965 (that is, $1,040 credit allowed minus $800 which would have been allowed).

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Example 5. (i) X Corporation, which makes its returns on the basis of the calendar year, acquired and placed in service on November 1, 1962, an item of section 38 property with a basis of $10,000 and an estimated useful life of 8 years. The amount of qualified investment with respect to such asset was $10,000. For the taxable year 1962, X Corporation's credit earned of $700 was allowed as a credit against its liability for tax. For each of the taxable years 1963, 1964, and 1965 X had no taxable income. On July 3, 1966, the item of section 38 property is sold to Y Corporation. For the taxable year 1966 X Corporation has a net operating loss of $3,000. (ii) The actual useful life of the item of property is three years and eight months. The recomputed qualified investment with respect to such item of property is zero and X Corporation's recomputed credit earned for the taxable year 1962 is zero. Notwithstanding the $3,000 net operating loss for the taxable year 1966, the income tax imposed by chapter 1 of the Code on X Corporation for such year is $700 (that is, the decrease in its credit earned for the taxable year 1962).
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(e) Identification of property— (1) General rule— In general, the taxpayer must maintain records from which he can establish, with respect to each item of section 38 property, the following facts:
(a) The date the property is disposed of or otherwise ceases to be section 38 property,
(b) The estimated useful life which was assigned to the property under paragraph (e) of § 1.46-3 ,
(c) The month and the taxable year in which the property was placed in service, and
(d) The basis (or cost), actually or reasonably determined, of the property.
(ii) Recapture determination. For purposes of determining whether section 38 property is disposed of, or otherwise ceases to be section 38 property with respect to the taxpayer, before the close of its estimated useful life, and for purposes of determining recomputed qualified investment, the taxpayer must establish from his records the facts required by subdivision (i) of this subparagraph.
(iii) Examples. If the taxpayer fails to maintain records from which he can establish the facts required by subdivision (i) of this subparagraph, then this section shall be applied to the taxpayer in the manner indicated in the following examples:

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Example 1. Corporation X, organized on January 1, 1964, files its income tax return on the basis of a calendar year. During the years 1964 and 1965, X places in service several items of machinery to which it assigns estimated useful lives of 8 years. X places the items of machinery in a composite account for purposes of computing depreciation. When X's 1966 return is being audited, X is unable to establish whether the items placed in service in 1964 and 1965 were still on hand at the end of 1966. Therefore, for purposes of paragraph (a) of this section, X is treated as having disposed of, in 1966, all of the items of machinery placed in service in 1964 and 1965.

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Example 2. Corporation Y, organized on January 1, 1960, files its income tax return on the basis of a calendar year. During each of the years 1960 through 1965, Y places in service four items of machinery to each of which it assigns an estimated useful life of 8 years for depreciation purposes (and for purposes of computing qualified investment for relevant years). Y places the items of machinery in a composite account for purposes of computing depreciation (and for purposes of computing qualified investment for relevant years). When Y's 1965 return is being audited, Y can establish that it retired during 1965 only six items of this machinery. However, Y cannot establish the date on which these six items were placed in service, nor can Y establish that the items placed in service in 1963 or 1964 are still on hand as of the end of 1965. No previous recapture has taken place with respect to any of the items placed in service in 1963 or 1964. Assuming that paragraph (e) (2) and (3) of this section is not applicable, Y is treated, for purposes of paragraph (a) of this section, as having disposed of, in 1965, the four items placed in service in 1964, the most recent year before 1965 in which such property was placed in service, and two items from 1963, the next most recent year.

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Example 3. The facts are the same as in example 2 except that when Y's 1966 return is being audited, Y can establish from its records that all four items placed in service in 1965 are still on hand and that only three items were retired in 1966. For purposes of paragraph (a) of this section, Y is treated as having disposed of, in 1966, the two remaining items of machinery placed in service in 1963, and one of the items placed in service in 1962.
(2) Treatment of “mass assets”. (i) If, in the case of mass assets (as defined in subparagraph (4) of this paragraph), it is impracticable for the taxpayer to maintain records from which he can establish with respect to each item of section 38 property the facts required by subparagraph (1) of this paragraph, and if he adopts other reasonable recordkeeping practices, consonant with good accounting and engineering practices, and consistent with his prior recordkeeping practices, then he may substitute data from an appropriate mortality dispersion table. An appropriate mortality dispersion table must be based on an acceptable sampling of the taxpayer's actual experience or other acceptable statistical or engineering techniques. In lieu of such mortality dispersion table, the taxpayer may use a standard mortality dispersion table prescribed by the Commissioner. If the taxpayer uses such standard mortality dispersion table for any taxable year, it must be used for all subsequent taxable years unless the taxpayer obtains the consent of the Commissioner to change. If mass assets are placed in a multiple asset account and if the depreciation rate for such account is based on the maximum expected life of the longest lived asset in such account, in applying a mortality dispersion table (including a standard mortality dispersion table) the average expected useful life of the mass assets in such account must be used.
(ii) Subdivision (i) of this subparagraph shall not apply with respect to assets placed in service in a taxable year ending on or after June 30, 1967, and beginning before January 1, 1971, or with respect to assets placed in service for a taxable year beginning after December 31, 1970, for which the taxpayer has not made the election provided by section 167(m), unless the estimated useful lives which were assigned to such assets for purposes of determining qualified investment—
(a) Were separate lives based on the estimated range of years taken into account in establishing the average useful life of assets similar in kind under paragraph (e)(3)(ii)(b) of § 1.46-3, and
(b) Were determined by use of a mortality dispersion table (including a standard mortality dispersion table).
(iii) Any standard mortality dispersion table prescribed by the Commissioner shall be based on average useful life categories and with respect to each category shall contain five columns, the first four of which shall state the percentage of property assumed to have a useful life of—
Column (1): Less than 4 years,
Column (2): 4 years or more but less than 6 years,
Column (3): 6 years or more but less than 8 years, and
Column (4): 8 years or more.

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The fifth column shall show the total qualified investment as a percentage and shall be used in connection with the determination to be made under § 1.46-3(e)(3)(iii) . In the case of a table which is to apply to property which is described in section 50 or to property which is treated as property described in section 50 under paragraph (a)(2)(iii) of this section, this subdivision shall be applied by substituting “3 years” for “4 years”, “5 years” for “6 years”, and “7 years” for “8 years”.
(iv) Whenever the standard mortality dispersion table is used for a taxable year under subdivision (i) of this subparagraph (whether or not such table was used in determining qualified investment), the percentage of property shown in column (1) of the table shall (for purposes of section 47, this section, and §§ 1.47-2 through 1.47-6) be deemed to have been disposed of on the day before the expiration of the 4-year period beginning on the date on which it was considered as placed in service under § 1.47-1(c); the percentage of property shown in column (2) of the table shall be deemed to have been disposed of on the day before the expiration of the 6-year period beginning on the date on which it was so considered as placed in service; and the percentage of property shown in column (3) shall be deemed to have been disposed of on the day before the expiration of the 8-year period beginning on the date on which it was so considered as placed in service. In applying this subdivision for purposes of recomputing qualified investment, the proper average useful life category shall be used whether or not such category was used in determining qualified investment. In the case of property which is described in section 50 or property which is treated as property described in section 50 under paragraph (a)(2)(iii) of this section (other than property the qualified investment with respect to which was determined by use of the standard or an appropriate mortality dispersion table), this subdivision shall be applied by substituting “3-year period” for “4-year period”, “5-year period” for “6-year period”, and “7-year period” for “8-year period”.
(v) In lieu of using subdivision (iv) of this subparagraph for purposes of recomputing qualified investment, a taxpayer may, for the first recapture year (as defined in paragraph (a)(1)(ii)(b) of this section) to which such subdivision (iv) would otherwise apply with respect to any mass asset account, recompute qualified investment on the basis of the difference between (a) the proper total qualified investment based on the percentage shown in column (5) of the table, and (b) the total qualified investment actually claimed by the taxpayer for the year in which the property was placed in service.

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Example. Assume that the taxpayer places in service during 1963 mass assets costing him $100,000, that he places these assets in a multiple asset account for which he properly claims a useful life of 6 years and a qualified investment of $66,667 (2/3× $100,000), and that he is allowed an investment credit of $4,667.67. When the taxpayer's 1967 return is being audited he is unable to establish that any of the mass assets placed in service in 1963 were still on hand at the end of 1967. The taxpayer elects to use the standard mortality dispersion table prescribed by the Commissioner to determine the amount of recapture with respect to these mass assets. Assume that the table prescribed by the Commissioner shows with respect to mass assets with an average useful life of 6 years the following:
Percent of property assumed to have a useful life of— Total qualified investment (percent)(5)
Less than 4 years(1) 4 years or more, but less than 6 years(2) 6 years or more, but less than 8 years(3) 8 years or more(4)
15.87 34.13 34.13 15.87 50.00
(a) Under these circumstances 15.87 percent of the mass assets placed in service in 1963 are deemed to have been disposed of during 1967. With respect to these assets, the amount of qualified investment for 1963 was $10,580 ($15,870×2/3) and the amount of credit earned was $740.60 (7 percent of $10,580), whereas the recomputed qualified investment is zero and the recomputed credit earned is zero. Thus, the tax imposed by chapter 1 of the Code for 1967 is increased by $740.60. (b) No recapture determination is required for 1968 since no assets are deemed to have been disposed of in that year. During 1969, 34.13 percent of the mass assets placed in service in 1963 are deemed to have been disposed of. With respect to these assets, the amount of qualified investment for 1963 was $22,753.34 ($34,130×2/3) and the amount of credit earned was $1,592.73 (7 percent of $22,753.34), whereas the recomputed qualified investment is $11,376.67 ($34,130×1/3) and the recomputed credit earned is $796.37 (7 percent of $11,376.67). Thus, the tax imposed by chapter 1 of the Code for 1969 is increased by $796.36 ($1,592.73 minus $796.37). (c) If the taxpayer chooses to recompute qualified investment by using the method provided in subdivision (v) of this subparagraph, the increase in tax for 1967 (the first recapture year) would be $1,167.67, i.e., the original credit earned, $4,667.67, minus the recomputed credit earned, $3,500 (50 percent, the percentage shown in column (5), of $100,000 multiplied by 7 percent). As long as the same average useful life category reflects the taxpayer's experience for subsequent years, no recapture determination will be required for any future year, except as provided by subparagraph (3)(iv) of this paragraph.
(vi) Subdivision (i) of this subparagraph shall not apply with respect to section 38 property to which an election under section 167(m) applies unless the taxpayer assigns actual retirements of such section 38 property for all taxable years to the same vintage account for purposes of section 47 and for purposes of computing the allowance for depreciation under section 167. The assignment of actual retirements of section 38 property for a taxable year to particular vintage accounts may be made on the basis of an appropriate mortality dispersion table (based on an acceptable sampling of the taxpayer's actual experience or other statistical or engineering techniques) or on the basis of a standard mortality dispersion table prescribed by the Commissioner. If the taxpayer assigns actual retirements for any taxable year to particular vintage accounts on the basis of such standard mortality dispersion table, actual retirements for all subsequent taxable years must be assigned to particular vintage accounts on the basis of such table. Actual retirements of section 38 property for a taxable year shall be assigned to particular vintage accounts by—
(a) Determining the expected retirements for such taxable year from each vintage account containing such section 38 property, and
(b) Ratably allocating such actual retirements to each vintage account containing such section 38 property.
However, the unadjusted basis of retired assets assigned to any particular vintage account shall not exceed the unadjusted basis of the property contained in such account.
(3) Special rules. (i) Taxpayers who properly determine estimated useful lives under § 1.46-3(e)(3) (ii) (b) or (iii) may treat such assets as having been disposed of or having ceased to be section 38 assets in the order of the estimated useful lives that were assigned to such assets. Thus, the asset that is first disposed of or first ceases to be section 38 property may be treated as the asset to which there was assigned the shortest estimated useful life; the next asset disposed of or ceasing to be section 38 property may be treated as the asset to which there was assigned the second shortest life, etc.
(ii) In the case of taxpayers who use the rule of subdivision (i) of this subparagraph with respect to mass assets for which the estimated useful life was determined under § 1.46-3(e)(3)(iii), if the dispersion shown by the mortality dispersion table effective for a taxable year subsequent to the credit year is the same as the dispersion shown by the mortality table that was effective for the credit year (for example, if the same average useful life on the standard mortality dispersion table reflects the taxpayer's experience for both such years), no recapture determination is required for such subsequent taxable year.
(iii) Notwithstanding subdivision (i) of this subparagraph, taxpayers who, for purposes of determining qualified investment, do not use a mortality dispersion table with respect to certain section 38 assets similar in kind but who consistently assign under paragraph (e)(3)(ii)(b) of § 1.46-3 to such assets separate lives based on the estimated range of years taken into consideration in establishing the average useful life of such assets, may select the order in which such assets shall be considered as having been disposed of, regardless of the taxable years in which such assets were placed in service. If a taxpayer uses the method provided in this subdivision to determine that any asset is considered as having been disposed of, then, in addition to complying with the record requirements of subparagraph (1)(i) of this paragraph, such taxpayer must maintain records from which he can establish to the satisfaction of the district director that such asset has not previously been considered as having been disposed of. In addition, if, for any taxable year, a taxpayer uses the method provided in this subdivision for any asset, he must use for such year and for each subsequent taxable year (unless he obtains the district director's consent to change) with respect to all assets similar in kind to such asset—
(a) The method of determining estimated useful lives described in paragraph (e)(3)(ii)(b) of § 1.46-3, and
(b) The method he has selected under this subdivision for determining the order in which such assets are considered as having been disposed of.
A request by a taxpayer to obtain the district director's consent to change a system or method described in this subdivision with respect to assets similar in kind must be submitted to the district director on or before the last day of the taxable year with respect to which the change is sought.
(iv) Notwithstanding subdivisions (i), (ii), and (iii) of this subparagraph, there shall be taken into account separately any abnormal retirement of section 38 property of substantial value for which the estimated useful life was determined under § 1.46-3(e)(3) (ii) (b) or (iii). For definition of abnormal retirement, see paragraph (b) of § 1.167(a)-8.
(4) [Reserved]
(5) Example. This paragraph may be illustrated by the following example:

Code of Federal Regulations

Example. (i) Taxpayer A uses numerous small returnable containers in his business. It is impracticable for A to keep individual detailed records with respect to such containers which are mass assets. In 1965, A places in service 10 million containers purchased for $1 million, and reasonably determines that each of such containers has a basis of 10 cents. A places such containers in a multiple asset account to which is assigned a 5-year average useful life for purposes of computing depreciation. A has conducted an appropriate mortality study which shows that the containers have the following estimated useful lives:
Percent of assets Useful life (years)
10 3
20 6
40 5
20 6
10 7
A assigns separate lives to such assets based on the estimated range of years taken into account in establishing the average useful life of such containers. The qualified investment with respect to such containers is $400,000 computed as follows:
Code of Federal Regulations 329
Useful life Basis Applicable percentage Qualified investment
4 $200,000 331/3 $66,666
5 400,000 331/3 133,334
6 200,000 662/3 133,334
7 100,000 662/3 66,666
400,000
A's credit earned for 1965 of $28,000 (7 percent times $400,000) is allowed as a credit under section 38 against A's liability for tax of $2 million. (For purposes of this example the computations of investment credit and recapture with respect to containers placed in service in years other than 1965 are omitted.) The mortality studies effective for 1966 and 1967 show that none of the containers placed in service in 1965 was retired. (ii) A's mortality study effective with respect to 1968 shows that the containers are being retired as follows:
Percent of assets Useful life (years)
30 3
20 4
30 5
10 6
10 7
Thus, the 1968 study shows that 30 percent of the 10 million containers placed in service in 1965 were retired in 1968. Under the rule of subparagraph (3)(i) of this paragraph, the 3 million containers are treated as consisting of the 1 million containers to which was assigned a 3-year useful life and the 2