Code of Federal Regulations · Section
§ 1.1374-3 — -3 Net Unrealized Built-in Gain
26 C.F.R. § 1.1374-3
(a) In general. An S corporation's net unrealized built-in gain is the total of the following—
(1) The amount that would be the amount realized if, at the beginning of the first day of the recognition period, the corporation had remained a C corporation and had sold all its assets at fair market value to an unrelated party that assumed all its liabilities; decreased by
(2) Any liability of the corporation that would be included in the amount realized on the sale referred to in paragraph (a)(1) of this section, but only if the corporation would be allowed a deduction on payment of the liability; decreased by
(3) The aggregate adjusted bases of the corporation's assets at the time of the sale referred to in paragraph (a)(1) of this section; increased or decreased by
(4) The corporation's section 481 adjustments that would be taken into account on the sale referred to in paragraph (a)(1) of this section; and increased by
(5) Any recognized built-in loss that would not be allowed as a deduction under section 382, 383, or 384 on the sale referred to in paragraph (a)(1) of this section.
(b) Adjustment to net unrealized built-in gain—(1) In general. If section 1374(d)(8) applies to an S corporation's acquisition of assets, some or all of the stock of the corporation from which such assets were acquired was taken into account in the computation of the net unrealized built-in gain for a pool of assets of the S corporation, and some or all of such stock is redeemed or canceled in such transaction, then, subject to the limitations of paragraph (b)(2) of this section, such net unrealized built-in gain is adjusted to eliminate any effect that any built-in gain or built-in loss in the redeemed or canceled stock (other than stock with respect to which a loss under section 165 is claimed) had on the initial computation of net unrealized built-in gain for that pool of assets. For purposes of this paragraph, stock described in section 1374(d)(6) shall be treated as taken into account in the computation of the net unrealized built-in gain for a pool of assets of the S corporation.
(2) Limitations on adjustment—(i) Recognized built-in gain or loss. Net unrealized built-in gain for a pool of assets of the S corporation is only adjusted under paragraph (b)(1) of this section to reflect built-in gain or built-in loss in the redeemed or canceled stock that has not resulted in recognized built-in gain or recognized built-in loss during the recognition period.
(ii) Anti-duplication rule. Paragraph (b)(1) of this section shall not be applied to duplicate an adjustment to the net unrealized built-in gain for a pool of assets made pursuant to paragraph (b)(1) of this section.
(3) Effect of adjustment. Any adjustment to the net unrealized built-in gain made pursuant to this paragraph (b) only affects computations of the amount subject to tax under section 1374 for taxable years that end on or after the date of the acquisition to which section 1374(d)(8) applies.
(4) Pool of assets. For purposes of this section, a pool of assets means—
(i) The assets held by the corporation on the first day it became an S corporation, if the corporation was previously a C corporation; or
(ii) The assets the S corporation acquired from a C corporation in a section 1374(d)(8) transaction.
(c) Examples. The following examples illustrate the rules of this section:
(i) (A) X, a calendar year C corporation using the cash method, elects to become an S corporation on January 1, 1996. On December 31, 1995, X has assets and liabilities as follows:
(B) Further, X must include a total of $60,000 in taxable income in 1996, 1997, and 1998 under section 481(a).
(ii) If, on December 31, 1995, X sold all its assets to a third party that assumed all its liabilities, X's amount realized would be $1,050,000 ($750,000 cash received + $300,000 liabilities assumed = $1,050,000). Thus, X's net unrealized built-in gain is determined as follows:
(i) X, a calendar year C corporation, elects to become an S corporation effective January 1, 2005. On that date, X's assets (the first pool of assets) have a net unrealized built-in gain of $15,000. Among the assets in the first pool of assets is all of the outstanding stock of Y, a C corporation, with a fair market value of $33,000 and an adjusted basis of $18,000. On March 1, 2009, X sells an asset that it owned on January 1, 2005, and as a result has $10,000 of recognized built-in gain. X has had no other recognized built-in gain or built-in loss. X's taxable income limitation for 2009 is $50,000. Effective June 1, 2009, X elects under section 1361 to treat Y as a qualified subchapter S subsidiary (QSub). The election is treated as a transfer of Y's assets to X in a liquidation to which sections 332 and 337(a) apply.
(ii) Under paragraph (b) of this section, the net unrealized built in-gain of the first pool of assets is adjusted to account for the elimination of the Y stock in the liquidation. The net unrealized built-in gain of the first pool of assets, therefore, is decreased by $15,000, the amount by which the fair market value of the Y stock exceeded its adjusted basis as of January 1, 2005. Accordingly, for taxable years ending after June 1, 2009, the net unrealized built-in gain of the first pool of assets is $0.
(iii) Under § 1.1374-2(a), X's net recognized built-in gain for any taxable year equals the least of X's pre-limitation amount, taxable income limitation, and net unrealized built-in gain limitation. In 2009, X's pre-limitation amount is $10,000, X's taxable income limitation is $50,000, and X's net unrealized built-in gain limitation is $0. Because the net unrealized built-in gain of the first pool of assets has been adjusted to $0, despite the $10,000 of recognized built-in gain in 2009, X has $0 net recognized built-in gain for the taxable year ending on December 31, 2009.
(i) X, a calendar year C corporation, elects to become an S corporation effective January 1, 2005. On that date, X's assets (the first pool of assets) have a net unrealized built-in gain of negative $5,000. Among the assets in the first pool of assets is 10 percent of the outstanding stock of Y, a C corporation, with a fair market value of $18,000 and an adjusted basis of $33,000. On March 1, 2009, X sells an asset that it owned on January 1, 2005, resulting in $8,000 of recognized built-in gain. X has had no other recognized built-in gains or built-in losses. X's taxable income limitation for 2009 is $50,000. On June 1, 2009, Y transfers its assets to X in a reorganization under section 368(a)(1)(C).
(ii) Under paragraph (b) of this section, the net unrealized built in-gain of the first pool of assets is adjusted to account for the elimination of the Y stock in the reorganization. The net unrealized built-in gain of the first pool of assets, therefore, is increased by $15,000, the amount by which the adjusted basis of the Y stock exceeded its fair market value as of January 1, 2005. Accordingly, for taxable years ending after June 1, 2009, the net unrealized built-in gain of the first pool of assets is $10,000.
(iii) Under § 1.1374-2(a), X's net recognized built-in gain for any taxable year equals the least of X's pre-limitation amount, taxable income limitation, and net unrealized built-in gain limitation. In 2009, X's pre-limitation amount is $8,000 and X's taxable income limitation is $50,000. The net unrealized built-in gain of the first pool of assets has been adjusted to $10,000, so X's net unrealized built-in gain limitation is $10,000. X, therefore, has $8,000 net recognized built-in gain for the taxable year ending on December 31, 2009. X's net unrealized built-in gain limitation for 2010 is $2,000.
(i) X, a calendar year C corporation, elects to become an S corporation effective January 1, 2005. On that date, X's assets (the first pool of assets) have a net unrealized built-in gain of $30,000. Among the assets in the first pool of assets is all of the outstanding stock of Y, a C corporation, with a fair market value of $45,000 and an adjusted basis of $10,000. Y has no current or accumulated earnings and profits. On April 1, 2007, Y distributes $18,000 to X, $8,000 of which is treated as gain to X from the sale or exchange of property under section 301(c)(3). That $8,000 is recognized built-in gain to X under section 1374(d)(3), and results in $8,000 of net recognized built-in gain to X for 2007. X's net unrealized built-in gain limitation for 2008 is $22,000. On June 1, 2009, Y transfers its assets to X in a liquidation to which sections 332 and 337(a) apply.
(ii) Under paragraph (b) of this section, the net unrealized built in-gain of the first pool of assets is adjusted to account for the elimination of the Y stock in the liquidation. The net unrealized built-in gain of that pool of assets, however, can only be adjusted to reflect the amount of built-in gain that was inherent in the Y stock on January 1, 2005 that has not resulted in recognized built-in gain during the recognition period. In this case, therefore, the net unrealized built-in gain of the first pool of assets cannot be reduced by more than $27,000 ($35,000, the amount by which the fair market value of the Y stock exceeded its adjusted basis as of January 1, 2005, minus $8,000, the recognized built-in gain with respect to the stock during the recognition period). Accordingly, for taxable years ending after June 1, 2009, the net unrealized built-in gain of the first pool of assets is $3,000. The net unrealized built-in gain limitation for 2009 is $0.
Authorizing Statute
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Rules and regulations26 U.S.C. § 7805
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Advanced manufacturing production credit26 U.S.C. § 45X
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Alcohol, etc., used as fuel26 U.S.C. § 40
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Gross income defined26 U.S.C. § 61
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Transfers of excess pension assets to retiree health accounts26 U.S.C. § 420
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Partial exclusion for gain from certain small business stock26 U.S.C. § 1202
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Tax treatment of stripped bonds26 U.S.C. § 1286
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Current taxation of income from qualified electing funds26 U.S.C. § 1293
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Imposition of tax on certain foreign procurement26 U.S.C. § 5000C
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Returns regarding payments of interest26 U.S.C. § 6049
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Signing of returns and other documents26 U.S.C. § 6061
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General requirement of return, statement, or list26 U.S.C. § 6011
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Income from discharge of indebtedness26 U.S.C. § 108
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Indian general welfare benefits26 U.S.C. § 139E
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Bonds must be registered to be tax exempt; other requirements26 U.S.C. § 149
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Trade or business expenses26 U.S.C. § 162
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Accelerated cost recovery system26 U.S.C. § 168
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Amortizable bond premium26 U.S.C. § 171
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Golden parachute payments26 U.S.C. § 280G
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Distributions of stock and stock rights26 U.S.C. § 305
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Transfer to corporation controlled by transferor26 U.S.C. § 351
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Special rules for long-term contracts26 U.S.C. § 460
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Determination of basis of partner’s interest26 U.S.C. § 705
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Taxes of foreign countries and of possessions of United States26 U.S.C. § 901
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Controlled foreign corporations; United States persons26 U.S.C. § 957
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New energy efficient home credit26 U.S.C. § 45L
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2-percent floor on miscellaneous itemized deductions26 U.S.C. § 67
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Certain death benefits26 U.S.C. § 101
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Qualified business income26 U.S.C. § 199A
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Installment method26 U.S.C. § 453
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Certain payments for the use of property or services26 U.S.C. § 467
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Partners, not partnership, subject to tax26 U.S.C. § 701
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Extent of recognition of gain or loss on distribution26 U.S.C. § 731
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Capitalization of certain policy acquisition expenses26 U.S.C. § 848
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Special rules for determining source26 U.S.C. § 863
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Income of foreign governments and of international organizations26 U.S.C. § 892
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Definitions and special rules26 U.S.C. § 6241
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Computation and payment of tax26 U.S.C. § 1503
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Adjusted gross income defined26 U.S.C. § 62
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Treatment of loans with below-market interest rates26 U.S.C. § 7872
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Basis to distributees26 U.S.C. § 358
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Minimum participation standards26 U.S.C. § 410
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Other definitions and special rules26 U.S.C. § 860G
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Adjustments required by changes in method of accounting26 U.S.C. § 481
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Definitions26 U.S.C. § 7701
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Insurance income26 U.S.C. § 953
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Returns relating to actions affecting basis of specified securities26 U.S.C. § 6045B
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Information relating to certain trusts and annuity plans26 U.S.C. § 6047
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Enhanced oil recovery credit26 U.S.C. § 43
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Energy efficient commercial buildings deduction26 U.S.C. § 179D
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Redemption through use of related corporations26 U.S.C. § 304
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Certain stock purchases treated as asset acquisitions26 U.S.C. § 338
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Special limitations on certain excess credits, etc.26 U.S.C. § 383
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Optional treatment of elective deferrals as Roth contributions26 U.S.C. § 402A
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General rule for taxable year of inclusion26 U.S.C. § 451
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Qualified ABLE programs26 U.S.C. § 529A
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Charitable remainder trusts26 U.S.C. § 664
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Nonrecognition of gain or loss on contribution26 U.S.C. § 721
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Investment of earnings in United States property26 U.S.C. § 956
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Definitions and special rule26 U.S.C. § 1377
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Relief from joint and several liability on joint return26 U.S.C. § 6015
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Return of S corporation26 U.S.C. § 6037
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Notice of certain transfers to foreign persons26 U.S.C. § 6038B
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Information at source26 U.S.C. § 6041
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Imposition of accuracy-related penalty on underpayments26 U.S.C. § 6662
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Tax imposed26 U.S.C. § 1
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Railroad track maintenance credit26 U.S.C. § 45G
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Zero-emission nuclear power production credit26 U.S.C. § 45U
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Rehabilitation credit26 U.S.C. § 47
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Clean electricity investment credit26 U.S.C. § 48E
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Special rules26 U.S.C. § 52
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Election to expense certain depreciable business assets26 U.S.C. § 179
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Individual retirement accounts26 U.S.C. § 408
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Special rules for nondealers26 U.S.C. § 453A
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Deductions limited to amount at risk26 U.S.C. § 465
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Exemption from tax on corporations, certain trusts, etc.26 U.S.C. § 501
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Definition of regulated investment company26 U.S.C. § 851
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Source rules for personal property sales26 U.S.C. § 865
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Tax on nonresident alien individuals26 U.S.C. § 871
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Foreign base company income26 U.S.C. § 954
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S corporation defined26 U.S.C. § 1361
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Definitions26 U.S.C. § 1402
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Distributions of property26 U.S.C. § 301
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Life insurance contract defined26 U.S.C. § 7702
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Previously-owned clean vehicles26 U.S.C. § 25E
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Electricity produced from certain renewable resources, etc.26 U.S.C. § 45
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Clean fuel production credit26 U.S.C. § 45Z
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Taxation of employee annuities26 U.S.C. § 403
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Last-in, first-out inventories26 U.S.C. § 472
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Allocation of income and deductions among taxpayers26 U.S.C. § 482
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Definitions applicable to subparts A, B, C, and D26 U.S.C. § 643
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Taxable years of partner and partnership26 U.S.C. § 706
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Disposition of investment in United States real property26 U.S.C. § 897
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Administrative adjustment request by partnership26 U.S.C. § 6227
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Citizens or residents of the United States living abroad26 U.S.C. § 911
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Residence and source rules involving possessions26 U.S.C. § 937
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Rules relating to expatriated entities and their foreign parents26 U.S.C. § 7874
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Regulations26 U.S.C. § 1502
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Capitalization and inclusion in inventory costs of certain expenses26 U.S.C. § 263A
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Foreign corporations26 U.S.C. § 367
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Roth IRAs26 U.S.C. § 408A
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Minimum vesting standards26 U.S.C. § 411
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Partner’s distributive share26 U.S.C. § 704
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Unrealized receivables and inventory items26 U.S.C. § 751
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Taxation of residual interests26 U.S.C. § 860C
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Exclusions from gross income26 U.S.C. § 883
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Income affected by treaty26 U.S.C. § 894
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Other definitions and special rules26 U.S.C. § 989
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Special rules26 U.S.C. § 1474
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Returns of brokers26 U.S.C. § 6045
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Information returns of tax return preparers26 U.S.C. § 6060
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Authority to make credits or refunds26 U.S.C. § 6402
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Failure by individual to pay estimated income tax26 U.S.C. § 6654
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Interest on certain home mortgages26 U.S.C. § 25
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Credit for qualified commercial clean vehicles26 U.S.C. § 45W
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Interest on State and local bonds26 U.S.C. § 103
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Qualified lessee construction allowances for short-term leases26 U.S.C. § 110
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Losses26 U.S.C. § 165
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Charitable, etc., contributions and gifts26 U.S.C. § 170
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Incentive stock options26 U.S.C. § 422
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Deemed paid credit for subpart F inclusions26 U.S.C. § 960
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Election of mark to market for marketable stock26 U.S.C. § 1296
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Returns relating to certain life insurance contract transactions26 U.S.C. § 6050Y
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Clean vehicle credit26 U.S.C. § 30D
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Credit for carbon oxide sequestration26 U.S.C. § 45Q
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Amount of credit26 U.S.C. § 46
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Advanced manufacturing investment credit26 U.S.C. § 48D
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Arbitrage26 U.S.C. § 148
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Amortization of goodwill and certain other intangibles26 U.S.C. § 197
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Interest on education loans26 U.S.C. § 221
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Disallowance of certain entertainment, etc., expenses26 U.S.C. § 274
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Qualifications for tax credit employee stock ownership plans26 U.S.C. § 409
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Unrelated debt-financed income26 U.S.C. § 514
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Rules for allocation of basis26 U.S.C. § 755
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Rules for certain reserves26 U.S.C. § 807
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Special rules in case of foreign oil and gas income26 U.S.C. § 907
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Basis of property acquired from a decedent26 U.S.C. § 1014
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Special rules26 U.S.C. § 1298
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Definitions26 U.S.C. § 3401
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Extension of time for filing returns26 U.S.C. § 6081
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Renumbered § 45C]26 U.S.C. § 28
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Credit for production of clean hydrogen26 U.S.C. § 45V
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Energy credit26 U.S.C. § 48
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Limitation on credit26 U.S.C. § 904
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Qualified pension, profit-sharing, and stock bonus plans26 U.S.C. § 401
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Dependent care assistance programs26 U.S.C. § 129
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Special rules for nuclear decommissioning costs26 U.S.C. § 468A
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Mark to market accounting method for dealers in securities26 U.S.C. § 475
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Basis of distributed property other than money26 U.S.C. § 732
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Straddles26 U.S.C. § 1092
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Qualified electing fund26 U.S.C. § 1295
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Averaging of farm income26 U.S.C. § 1301
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Withholdable payments to foreign financial institutions26 U.S.C. § 1471
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Definitions26 U.S.C. § 1504
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Basis information to persons acquiring property from decedent26 U.S.C. § 6035
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Information with respect to certain foreign-owned corporations26 U.S.C. § 6038A
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Returns relating to cash received in trade or business, etc.26 U.S.C. § 6050I
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Credit for increasing research activities26 U.S.C. § 41
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Definitions and special rules26 U.S.C. § 150
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Passive activity losses and credits limited26 U.S.C. § 469
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Certain expenses for which credits are allowable26 U.S.C. § 280C
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Assumption of liability26 U.S.C. § 357
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Complete liquidations of subsidiaries26 U.S.C. § 332
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Distribution of stock and securities of a controlled corporation26 U.S.C. § 355
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Period for computation of taxable income26 U.S.C. § 441
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General rule for taxable year of deduction26 U.S.C. § 461
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Special rules for modified guaranteed contracts26 U.S.C. § 817A
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Treatment of variable contracts26 U.S.C. § 817
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Certain reinsurance agreements26 U.S.C. § 845
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Failure to file notice of redetermination of foreign tax26 U.S.C. § 6689
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Branch transactions26 U.S.C. § 987
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Qualified zone property defined26 U.S.C. § 1397D
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Withholdable payments to other foreign entities26 U.S.C. § 1472
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Liquidating, etc., transactions26 U.S.C. § 6043
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Verification of returns26 U.S.C. § 6065
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Mode or time of collection26 U.S.C. § 6302
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Transfer of certain credits26 U.S.C. § 6418
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American Opportunity and Lifetime Learning credits26 U.S.C. § 25A
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Refundable credit for coverage under a qualified health plan26 U.S.C. § 36B
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Clean electricity production credit26 U.S.C. § 45Y
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Other special rules26 U.S.C. § 50
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Treatment of community income26 U.S.C. § 66
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Basis to corporations26 U.S.C. § 362
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Election of taxable year other than required taxable year26 U.S.C. § 444
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Transactions between partner and partnership26 U.S.C. § 707
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Special allocation rules for certain asset acquisitions26 U.S.C. § 1060
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Discounted unpaid losses defined26 U.S.C. § 846
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Definitions and special rules26 U.S.C. § 864
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Capital asset defined26 U.S.C. § 1221
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Interest on tax deferral26 U.S.C. § 1291
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Passive foreign investment company26 U.S.C. § 1297
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Withholding of tax on nonresident aliens26 U.S.C. § 1441
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Returns as to interests in foreign partnerships26 U.S.C. § 6046A
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State and local income tax refunds26 U.S.C. § 6050E
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Returns relating to exchanges of certain partnership interests26 U.S.C. § 6050K
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Returns relating to higher education tuition and related expenses26 U.S.C. § 6050S
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Reporting of health insurance coverage26 U.S.C. § 6055
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Low-income housing credit26 U.S.C. § 42
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New markets tax credit26 U.S.C. § 45D
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Definitions and special rules26 U.S.C. § 414
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Qualified asset account; limitation on additions to account26 U.S.C. § 419A
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General rule for methods of accounting26 U.S.C. § 446
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Interest on certain deferred payments26 U.S.C. § 483
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Reserves for losses on loans of banks26 U.S.C. § 585
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Certain revocable trusts treated as part of estate26 U.S.C. § 645
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Insurance company taxable income26 U.S.C. § 832
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Income from sources within the United States26 U.S.C. § 861
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Treatment of certain foreign currency transactions26 U.S.C. § 988
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Functional currency26 U.S.C. § 985
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Other definitions and special rules26 U.S.C. § 1275
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Election to extend time for payment of tax on undistributed earnings26 U.S.C. § 1294
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Requirement to maintain minimum essential coverage26 U.S.C. § 5000A
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Returns by exempt organizations26 U.S.C. § 6033
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Information with respect to foreign financial assets26 U.S.C. § 6038D
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Returns relating to the cancellation of indebtedness by certain entities26 U.S.C. § 6050P
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Identifying numbers26 U.S.C. § 6109
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Elective payment of applicable credits26 U.S.C. § 6417
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Certain fringe benefits26 U.S.C. § 132
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Dependent defined26 U.S.C. § 152
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Interest26 U.S.C. § 163
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Bad debts26 U.S.C. § 166
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Special rules for credits and deductions26 U.S.C. § 642
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General rule for inventories26 U.S.C. § 471
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Political organizations26 U.S.C. § 527
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Special rules applicable to sections 661 and 66226 U.S.C. § 663
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Allowance of deductions and credits26 U.S.C. § 874
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Branch profits tax26 U.S.C. § 884
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Tax imposed on certain built-in gains26 U.S.C. § 1374
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Foreign tax-exempt organizations26 U.S.C. § 1443
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Valuation tables26 U.S.C. § 7520
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Losses on small business stock26 U.S.C. § 1244
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Distributions26 U.S.C. § 1368
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Definitions26 U.S.C. § 1473
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Information with respect to certain fines, penalties, and other amounts26 U.S.C. § 6050X
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Failure by corporation to pay estimated income tax26 U.S.C. § 6655