Code of Federal Regulations · Section
§ 1.179-3 — -3 Carryover Of Disallowed Deduction
26 C.F.R. § 1.179-3
(a) In general. Under section 179(b)(3)(B), a taxpayer may carry forward for an unlimited number of years the amount of any cost of section 179 property elected to be expensed in a taxable year but disallowed as a deduction in that taxable year because of the taxable income limitation of section 179(b)(3)(A) and § 1.179-2(c) (“carryover of disallowed deduction”). This carryover of disallowed deduction may be deducted under section 179(a) and § 1.179-1(a) in a future taxable year as provided in paragraph (b) of this section.
(b) Deduction of carryover of disallowed deduction—(1) In general. The amount allowable as a deduction under section 179(a) and § 1.179-1(a) for any taxable year is increased by the lesser of—
(i) The aggregate amount disallowed under section 179(b)(3)(A) and § 1.179-2(c) for all prior taxable years (to the extent not previously allowed as a deduction by reason of this section); or
(ii) The amount of any unused section 179 expense allowance for the taxable year (as described in paragraph (c) of this section).
(2) Cross references. See paragraph (f) of this section for rules that apply when a taxpayer disposes of or otherwise transfers section 179 property for which a carryover of disallowed deduction is outstanding. See paragraph (g) of this section for special rules that apply to partnerships and S corporations and paragraph (h) of this section for special rules that apply to partners and S corporation shareholders.
(c) Unused section 179 expense allowance. The amount of any unused section 179 expense allowance for a taxable year equals the excess (if any) of—
(1) The maximum cost of section 179 property that the taxpayer may deduct under section 179 and § 1.179-1 for the taxable year after applying the limitations of section 179(b) and § 1.179-2; over
(2) The amount of section 179 property that the taxpayer actually elected to expense under section 179 and § 1.179-1(a) for the taxable year.
(d) Example. The following example illustrates the provisions of paragraphs (b) and (c) of this section.
A, a calendar-year taxpayer, has a $3,000 carryover of disallowed deduction for an item of section 179 property purchased and placed in service in 1991. In 1992, A purchases and places in service an item of section 179 property costing $25,000. A's 1992 taxable income from the active conduct of all A's trades or businesses is $100,000. A elects, under section 179(c) and § 1.179-5, to expense $8,000 of the cost of the item of section 179 property purchased in 1992. Under paragraph (b) of this section, A may deduct $2,000 of A's carryover of disallowed deduction from 1991 (the lesser of A's total outstanding carryover of disallowed deductions ($3,000), or the amount of any unused section 179 expense allowance for 1992 ($10,000 limit less $8,000 elected to be expensed, or $2,000)). For 1993, A has a $1,000 carryover of disallowed deduction for the item of section 179 property purchased and placed in service in 1991.
(e) Recordkeeping requirement and ordering rule. The properties and the apportionment of cost that will be subject to a carryover of disallowed deduction are selected by the taxpayer in the year the properties are placed in service. This selection must be evidenced on the taxpayer's books and records and be applied consistently in subsequent years. If no selection is made, the total carryover of disallowed deduction is apportioned equally over the items of section 179 property elected to be expensed for the taxable year. For this purpose, the taxpayer treats any section 179 expense amount allocated from a partnership (or an S corporation) for a taxable year as one item of section 179 property. If the taxpayer is allowed to deduct a portion of the total carryover of disallowed deduction under paragraph (b) of this section, the taxpayer must deduct the cost of section 179 property carried forward from the earliest taxable year.
(f) Dispositions and other transfers of section 179 property—(1) In general. Upon a sale or other disposition of section 179 property, or a transfer of section 179 property in a transaction in which gain or loss is not recognized in whole or in part (including transfers at death), immediately before the transfer the adjusted basis of the section 179 property is increased by the amount of any outstanding carryover of disallowed deduction with respect to the property. This carryover of disallowed deduction is not available as a deduction to the transferor or the transferee of the section 179 property.
(2) Recapture under section 179(d)(10). Under § 1.179-1(e), if a taxpayer's section 179 property is subject to recapture under section 179(d)(10), the taxpayer must recapture the benefit derived from expensing the property. Upon recapture, any outstanding carryover of disallowed deduction with respect to the property is no longer available for expensing. In determining the amount subject to recapture under section 179(d)(10) and § 1.179-1(e), any outstanding carryover of disallowed deduction with respect to that property is not treated as an amount expensed under section 179.
(g) Special rules for partnerships and S corporations—(1) In general. Under section 179(d)(8) and § 1.179-2(c), the taxable income limitation applies at the partnership level as well as at the partner level. Therefore, a partnership may have a carryover of disallowed deduction with respect to the cost of its section 179 property. Similar rules apply to S corporations. This paragraph (g) provides special rules that apply when a partnership or an S corporation has a carryover of disallowed deduction.
(2) Basis adjustment. Under § 1.179-1(f)(2), the basis of a partnership's section 179 property must be reduced to reflect the amount of section 179 expense elected by the partnership. This reduction must be made for the taxable year for which the election is made even if the section 179 expense amount, or a portion thereof, must be carried forward by the partnership. Similar rules apply to S corporations.
(3) Dispositions and other transfers of section 179 property by a partnership or an S corporation. The provisions of paragraph (f) of this section apply in determining the treatment of any outstanding carryover of disallowed deduction with respect to section 179 property disposed of, or transferred in a nonrecognition transaction, by a partnership or an S corporation.
(4) Example. The following example illustrates the provisions of this paragraph (g).
ABC, a calendar-year partnership, owns and operates a restaurant business. During 1992, ABC purchases and places in service two items of section 179 property—a cash register costing $4,000 and office furniture costing $6,000. ABC elects to expense under section 179(c) the full cost of the cash register and the office furniture. For 1992, ABC has $6,000 of taxable income derived from the active conduct of its restaurant business. Therefore, ABC may deduct only $6,000 of section 179 expenses and must carry forward the remaining $4,000 of section 179 expenses at the partnership level. ABC must reduce the adjusted basis of the section 179 property by the full amount elected to be expensed. However, ABC may not allocate to its partners any portion of the carryover of disallowed deduction until ABC is able to deduct it under paragraph (b) of this section.
(h) Special rules for partners and S corporation shareholders—(1) In general. Under section 179(d)(8) and § 1.179-2(c), a partner may have a carryover of disallowed deduction with respect to the cost of section 179 property elected to be expensed by the partnership and allocated to the partner. A partner who is allocated section 179 expenses from a partnership must reduce the basis of his or her partnership interest by the full amount allocated regardless of whether the partner may deduct for the taxable year the allocated section 179 expenses or is required to carry forward all or a portion of the expenses. Similar rules apply to S corporation shareholders.
(2) Dispositions and other transfers of a partner's interest in a partnership or a shareholder's interest in an S corporation. A partner who disposes of a partnership interest, or transfers a partnership interest in a transaction in which gain or loss is not recognized in whole or in part (including transfers of a partnership interest at death), may have an outstanding carryover of disallowed deduction of section 179 expenses allocated from the partnership. In such a case, immediately before the transfer the partner's basis in the partnership interest is increased by the amount of the partner's outstanding carryover of disallowed deduction with respect to the partnership interest. This carryover of disallowed deduction is not available as a deduction to the transferor or transferee partner of the section 179 property. Similar rules apply to S corporation shareholders.
(3) Examples. The following examples illustrate the provisions of this paragraph (h).
(i) G is a general partner in GD, a calendar-year partnership, and is engaged in the active conduct of GD's business. During 1991, GD purchases and places section 179 property in service and elects to expense a portion of the cost of the property under section 179. GD allocates $2,500 of section 179 expenses and $15,000 of taxable income (determined without regard to the section 179 deduction) to G. The income was derived from the active conduct by GD of a trade or business.
(ii) In addition to being a partner in GD, G conducts a business as a sole proprietor. During 1991, G purchases and places in service office equipment costing $25,000 and a computer costing $10,000 in connection with the sole proprietorship. G elects under section 179(c) and § 1.179-5 to expense $7,500 of the cost of the office equipment. G has a taxable loss (determined without regard to the section 179 deduction) derived from the active conduct of this business of $12,500.
(iii) G has no other taxable income (or loss) derived from the active conduct of a trade or business during 1991. G's taxable income limitation for 1991 is $2,500 ($15,000 taxable income allocated from GD less $12,500 taxable loss from the sole proprietorship). Therefore, G may deduct during 1991 only $2,500 of the $10,000 of section 179 expenses. G notes on the appropriate books and records that G expenses the $2,500 of section 179 expenses allocated from GD and carries forward the $7,500 of section 179 expenses with respect to the office equipment purchased by G's sole proprietorship.
(iv) On January 1, 1992, G sells the office equipment G's sole proprietorship purchased and placed in service in 1991. Under paragraph (f) of this section, immediately before the sale G increases the adjusted basis of the office equipment by $7,500, the amount of the outstanding carryover of disallowed deduction with respect to the office equipment.
(i) Assume the same facts as in Example 1, except that G notes on the appropriate books and records that G expenses $2,500 of section 179 expenses relating to G's sole proprietorship and carries forward the remaining $5,000 of section 179 expenses relating to G's sole proprietorship and $2,500 of section 179 expenses allocated from GD.
(ii) On January 1, 1992, G sells G's partnership interest to A. Under paragraph (h)(2) of this section, immediately before the sale G increases the adjusted basis of G's partnership interest by $2,500, the amount of the outstanding carryover of disallowed deduction with respect to the partnership interest.
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