Treasury Regulations · 26 CFR
§ 1.172-7. Joint return by husband and wife.
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. § 172
Cite as 26 CFR § 1.172-7
At a glance
Read from the text and its source citation. Not part of the regulation.
- Status
- In the current eCFR
- Issued
- November 26, 1960 by T.D. 6500
- Last amended
- December 2, 1986 by T.D. 8107
- Issued under
- 26 U.S.C. § 172
- Length
- 2,597 words · about 11 min to read
- Cross-references
- cites 1 Code section and 3 regulations; cited by 2
(a) That portion of the combined taxable income of both spouses for such year for which the joint return was made which is attributable to the gross income and deductions of the particular spouse, gross income and deductions being taken into account to the same extent that they are taken into account in computing such combined taxable income, and
(b) That portion of such combined taxable income which is attributable to the other spouse; but, if such other spouse sustained a net operating loss in a taxable year beginning on the same date as the taxable year in which the particular spouse sustained the net operating loss from which the taxable income is subtracted, then such portion shall first be reduced by such net operating loss of such other spouse.
H and W filed joint returns for 1954 and 1955. They sustained a joint net operating loss of $1,000 for 1954 and a joint net operating loss of $2,000 for 1955. For 1954 the deductions of H exceeded his gross income by $700, and the deductions of W exceeded her gross income by $300, the total of such amounts being $1,000. Therefore, $700 of the $1,000 joint net operating loss for 1954 is considered the net operating loss of H for 1954, and $300 of such joint net operating loss is considered the net operating loss of W for 1954. For 1955 the gross income of H exceeded his deductions, so that his separate taxable income would be $1,500, and the deductions of W exceeded her gross income by $3,500. Therefore, all of the $2,000 joint net operating loss for 1955 is considered the separate net operating loss of W for 1955.
(i) H and W filed joint returns for 1954 and 1956, and separate returns for 1955 and 1957. For the years 1954, 1955, 1956, and 1957 they had taxable incomes and net operating losses as follows, losses being indicated in parentheses:
| 1954 | 1955 | 1956 | 1957 | |
|---|---|---|---|---|
| H | ($5,000) | ($2,500) | $6,500 | ($4,000) |
| W | (3,000) | 2,000 | 3,000 | (1,500) |
| Total | (8,000) | 9,500 |
(ii) The net operating loss carryover of H from 1957 to 1958 is $4,000, that is, his $4,000 net operating loss for 1957 which is not reduced by any part of the taxable income for 1956, since none of such taxable income is attributable to H and the portion attributable to W is entirely offset by her separate net operating loss for her taxable year 1957, which taxable year begins on the same date as H's taxable year 1957. H's $4,000 net operating loss for 1957 likewise is not reduced by reference to 1955 since H sustained a loss in 1955. The $0 taxable income for 1956 which reduces H's net operating loss for 1957 is computed as follows:
(iii) The combined taxable income of $9,500 for 1956 is reduced to $1,000 by the net operating loss deduction for such year of $8,500. This net operating loss deduction is computed without taking into account any net operating loss of either H or W sustained in a taxable year beginning on or after January 1, 1957, the date of the beginning of the taxable year in which H sustained the net operating loss from which the taxable income is subtracted. This $8,500 is composed of H's carryovers of $5,000 from 1954 and $2,500 from 1955, and of W's carryover of $1,000 from 1954 (the excess of W's $3,000 loss for 1954 over her $2,000 income for 1955). None of the $1,000 combined taxable income for 1956 (computed with the net operating loss deduction described above) is attributable to H since it is caused by W's income (computed after deducting her separate carryover) offsetting H's loss (computed by deducting from his income his separate carryovers). No part of the $1,000 combined taxable income for 1956 which is attributable to W is used to reduce H's net operating loss for 1957 since such taxable income attributable to W must first be reduced by W's $1,500 net operating loss for 1957, her taxable year beginning on the same date as the taxable year of H in which he sustained the net operating loss from which the taxable income is subtracted.
(iv) The net operating loss carryover of W from 1957 to 1958 is $500, her $1,500 loss reduced by the sum of her $0 taxable income for 1955 (computed by taking into account her $3,000 carryover from 1954) and her $1,000 taxable income for 1956, that is, the portion of the combined taxable income for 1956 which is attributable to her.
(i) Assume the same facts as in Example 2 except that for 1957 the net operating loss of W is $200 instead of $1,500.
(ii) The net operating loss carryover of H from 1957 to 1958 is $3,200, that is, his $4,000 net operating loss for 1957 reduced by the sum of his $0 taxable income for 1955 (a year in which he sustained a loss) and his $800 taxable income for 1956. Such $800 is computed as follows:
(iii) The combined taxable income for 1956, computed with the net operating loss deduction in the manner described in Example 2, remains $1,000, no part of which is attributable to H. To the $0 taxable income attributable to H for 1956 there is added $800, the excess of the $1,000 taxable income for such year attributable to W over her $200 net operating loss sustained in 1957, a taxable year beginning on the same date as the taxable year of H in which he sustained the $4,000 net operating loss from which the taxable income is subtracted.
(iv) W has no net operating loss carryover from 1957 to 1958 since her net operating loss of $200 for 1957 does not exceed the $1,000 taxable income for 1956 attributable to her.
(i) Assume the same facts as in Example 2, except that W changes her accounting period in 1957 to a fiscal year ending on January 31, and has neither income nor losses for the taxable year January 1, 1957, to January 31, 1957, or for the fiscal year February 1, 1957, to January 31, 1958, but has a net operating loss of $200 for the fiscal year February 1, 1958, to January 31, 1959.
(ii) The net operating loss carryover of H from 1957 to 1958 is $3,000, that is, his net operating loss of $4,000 for 1957 reduced by the sum of his $0 taxable income for 1955 (a year in which he sustained a loss) and his $1,000 taxable income for 1956. Such $1,000 is computed as follows:
(iii) The combined taxable income for 1956, computed with the net operating loss deduction in the manner described in Example 2, remains $1,000, no part of which is attributable to H. To the $0 taxable income attributable to H for 1956 there is added the $1,000 taxable income attributable to W for such year. The taxable income attributable to W is not reduced by any amount since she does not have a net operating loss for her taxable year beginning on January 1, 1957, the date of the beginning of the taxable year of H in which he sustained the $4,000 net operating loss from which his taxable income is subtracted.
(iv) The net operating loss carryover of W from the fiscal year beginning February 1, 1958, to her next fiscal year is $200, that is, her net operating loss of $200 for the fiscal year beginning February 1, 1958, reduced by the sum of her $0 taxable income for 1956, her $0 taxable income for the taxable year January 1, 1957, to January 31, 1957 (a year in which she had neither income nor loss), and her $0 taxable income for the fiscal year February 1, 1957, to January 31, 1958 (also a year in which she had neither income nor loss). The $0 taxable income for 1956 is computed as follows:
(v) The combined taxable income of $9,500 for 1956 is reduced to $0 amount by the net operating loss deduction for such year of $12,500. This net operating loss deduction is computed by taking into account the net operating loss of H for 1957 since it was sustained in a taxable year beginning before February 1, 1958, the date of the beginning of the taxable year of W in which she sustained the $200 net operating loss from which her taxable income is subtracted. This $12,500 is composed of H's carryovers of $5,000 from 1954 and $2,500 from 1955 and of his carryback of $4,000 from 1957, plus W's carryover of $1,000 from 1954 (the excess of W's $3,000 loss for 1954 over her $2,000 income for 1955). Since there is no combined taxable income for 1956, there is no taxable income attributable to W for such year.
[T.D. 6500, 25 FR 11402, Nov. 26, 1960, as amended by T.D. 8107, 51 FR 43346, Dec. 2, 1986]
Cross-references
Computed from the citations in the text of 26 CFR.
Code sections it cites
Regulations it cites
- § 1.172-4 Net operating loss carrybacks and net operating loss carryovers.
- § 1.172-3 Net operating loss in case of a taxpayer other than a corporation.
- § 1.172-5 Taxable income which is subtracted from net operating loss to determine carryback or carryover.
Cited by 2 other regulations
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.
- Amended by T.D. 8107 (51 FR 43346)
- Issued by T.D. 6500 (25 FR 11402)
Where it sits in 26 CFR
- Subchapter A Income tax
- Part 1 Income taxes
- Itemized Deductions for Individuals and Corporations (Continued)
Nearby sections
- § 1.172-3 Net operating loss in case of a taxpayer other than a corporation.
- § 1.172-4 Net operating loss carrybacks and net operating loss carryovers.
- § 1.172-5 Taxable income which is subtracted from net operating loss to determine carryback or carryover.
- § 1.172-6 Illustration of net operating loss carrybacks and carryovers.
- § 1.172-7 Joint return by husband and wife.
- § 1.172-8 Net operating loss carryovers for regulated transportation corporations.
- § 1.172-9 Election with respect to portion of net operating loss attributable to foreign expropriation loss.
- § 1.172-10 Net operating losses of real estate investment trusts.
- § 1.172-13 Product liability losses.