26 U.S.C. § 6225 (INTERNAL REVENUE CODE)
§ 6225. Assessments made only after partnership level proceedings are completed
(a) Restriction on assessment and collection
Except as otherwise provided in this subchapter, no assessment of a deficiency attributable to any partnership item may be made (and no levy or proceeding in any court for the collection of any such deficiency may be made, begun, or prosecuted) before—
(1) the close of the 150th day after the day on which a notice of a final partnership administrative adjustment was mailed to the tax matters partner, and
(2) if a proceeding is begun in the Tax Court under section 6226 during such 150-day period, the decision of the court in such proceeding has become final.
(b) Premature action may be enjoined
Notwithstanding section 7421(a), any action which violates subsection (a) may be enjoined in the proper court, including the Tax Court. The Tax Court shall have no jurisdiction to enjoin any action or proceeding under this subsection unless a timely petition for a readjustment of the partnership items for the taxable year has been filed and then only in respect of the adjustments that are the subject of such petition.
(c) Limit where no proceeding begun
If no proceeding under section 6226 is begun with respect to any final partnership administrative adjustment during the 150-day period described in subsection (a), the deficiency assessed against any partner with respect to the partnership items to which such adjustment relates shall not exceed the amount determined in accordance with such adjustment.
(Added Pub. L. 97–248, title IV, § 402(a), Sept. 3, 1982, 96 Stat. 652; amended Pub. L. 105–34, title XII, § 1239(a), Aug. 5, 1997, 111 Stat. 1027.)
heading: Enactment of Part and Repeal and Reenactment of Section
text: Pub. L. 114–74, title XI, § 1101(a), (c)(1), (g), Nov. 2, 2015, 129 Stat. 625, 628, 638, provided that, applicable to returns filed for partnership taxable years beginning after Dec. 31, 2017, with certain exceptions, a new Part II heading “Partnership Adjustments” and analysis consisting of items 6225 to 6227 are enacted, this section is repealed, and a new section 6225 following the Part II analysis is enacted to read as follows:
§ 6225. Partnership adjustment by Secretary
(a) In general
In the case of any adjustment by the Secretary in the amount of any item of income, gain, loss, deduction, or credit of a partnership, or any partner’s distributive share thereof—
(1) the partnership shall pay any imputed underpayment with respect to such adjustment in the adjustment year as provided in section 6232, and
(2) any adjustment that does not result in an imputed underpayment shall be taken into account by the partnership in the adjustment year—
(A) except as provided in subparagraph (B), as a reduction in non-separately stated income or an increase in non-separately stated loss (whichever is appropriate) under section 702(a)(8), or
(B) in the case of an item of credit, as a separately stated item.
(b) Determination of imputed underpayments
For purposes of this subchapter—
(1) In general
Except as provided in subsection (c), any imputed underpayment with respect to any partnership adjustment for any reviewed year shall be determined—
(A) by netting all adjustments of items of income, gain, loss, or deduction and multiplying such net amount by the highest rate of tax in effect for the reviewed year under section 1 or 11,
(B) by treating any net increase or decrease in loss under subparagraph (A) as a decrease or increase, respectively, in income, and
(C) by taking into account any adjustments to items of credit as an increase or decrease, as the case may be, in the amount determined under subparagraph (A).
(2) Adjustments to distributive shares of partners not netted
In the case of any adjustment which reallocates the distributive share of any item from one partner to another, such adjustment shall be taken into account under paragraph (1) by disregarding—
(A) any decrease in any item of income or gain, and
(B) any increase in any item of deduction, loss, or credit.
(c) Modification of imputed underpayments
(1) In general
The Secretary shall establish procedures under which the imputed underpayment amount may be modified consistent with the requirements of this subsection.
(2) Amended returns of partners
(A) In general
Such procedures shall provide that if—
(i) one or more partners file returns (notwithstanding section 6511) for the taxable year of the partners which includes the end of the reviewed year of the partnership,
(ii) such returns take into account all adjustments under subsection (a) properly allocable to such partners (and for any other taxable year with respect to which any tax attribute is affected by reason of such adjustments), and
(iii) payment of any tax due is included with such return,
then the imputed underpayment amount shall be determined without regard to the portion of the adjustments so taken into account.
(B) Reallocation of distributive share
In the case of any adjustment which reallocates the distributive share of any item from one partner to another, paragraph (2) shall apply only if returns are filed by all partners affected by such adjustment.
(3) Tax-exempt partners
Such procedures shall provide for determining the imputed underpayment without regard to the portion thereof that the partnership demonstrates is allocable to a partner that would not owe tax by reason of its status as a tax-exempt entity (as defined in section 168(h)(2)).
(4) Modification of applicable highest tax rates
(A) In general
Such procedures shall provide for taking into account a rate of tax lower than the rate of tax described in subsection (b)(1)(A) with respect to any portion of the imputed underpayment that the partnership demonstrates is allocable to a partner which—
(i) in the case of ordinary income, is a C corporation, or
(ii) in the case of a capital gain or qualified dividend, is an individual.
In no event shall the lower rate determined under the preceding sentence be less than the highest rate in effect with respect to the income and taxpayer described in clause (i) or clause (ii), as the case may be. For purposes of clause (ii), an S corporation shall be treated as an individual.
(B) Portion of imputed underpayment to which lower rate applies
(i) In general
Except as provided in clause (ii), the portion of the imputed underpayment to which the lower rate applies with respect to a partner under subparagraph (A) shall be determined by reference to the partners’ distributive share of items to which the imputed underpayment relates.
(ii) Rule in case of varied treatment of items among partners
If the imputed underpayment is attributable to the adjustment of more than 1 item, and any partner’s distributive share of such items is not the same with respect to all such items, then the portion of the imputed underpayment to which the lower rate applies with respect to a partner under subparagraph (A) shall be determined by reference to the amount which would have been the partner’s distributive share of net gain or loss if the partnership had sold all of its assets at their fair market value as of the close of the reviewed year of the partnership.
(5) Other procedures for modification of imputed underpayment
The Secretary may by regulations or guidance provide for additional procedures to modify imputed underpayment amounts on the basis of such other factors as the Secretary determines are necessary or appropriate to carry out the purposes of this subsection.
(6) Year and day for submission to Secretary
Anything required to be submitted pursuant to paragraph (1) shall be submitted to the Secretary not later than the close of the 270-day period beginning on the date on which the notice of a proposed partnership adjustment is mailed under section 6231 unless such period is extended with the consent of the Secretary.
(7) Decision of Secretary
Any modification of the imputed underpayment amount under this subsection shall be made only upon approval of such modification by the Secretary.
(d) Definitions
For purposes of this subchapter—
(1) Reviewed year
The term “reviewed year” means the partnership taxable year to which the item being adjusted relates.
(2) Adjustment year
The term “adjustment year” means the partnership taxable year in which—
(A) in the case of an adjustment pursuant to the decision of a court in a proceeding brought under section 6234, such decision becomes final,
(B) in the case of an administrative adjustment request under section 6227, such administrative adjustment request is made, or
(C) in any other case, notice of the final partnership adjustment is mailed under section 6231.
heading: Amendments
text: 1997—Pub. L. 105–34 substituted “the proper court, including the Tax Court. The Tax Court shall have no jurisdiction to enjoin any action or proceeding under this subsection unless a timely petition for a readjustment of the partnership items for the taxable year has been filed and then only in respect of the adjustments that are the subject of such petition.” for “the proper court.”
heading: Effective Date of Repeal
text: Repeal applicable to returns filed for partnership taxable years beginning after Dec. 31, 2017, with certain exceptions, see section 1101(g) of Pub. L. 114–74, set out as an Effective Date of 2015 Amendment note under section 6221 of this title.
heading: Effective Date of 1997 Amendment
text: Pub. L. 105–34, title XII, § 1239(f), Aug. 5, 1997, 111 Stat. 1028, provided that: “The amendments made by this section [amending this section and sections 6226, 6230, 6501, 6512, 7421, 7459, and 7482 of this title] shall apply to partnership taxable years ending after the date of the enactment of this Act [Aug. 5, 1997].”