26 USC 772 - Simplified flow-through

(a) General rule 
In determining the income tax of a partner of an electing large partnership, such partner shall take into account separately such partners distributive share of the partnerships
(1) taxable income or loss from passive loss limitation activities,
(2) taxable income or loss from other activities,
(3) net capital gain (or net capital loss)
(A) to the extent allocable to passive loss limitation activities, and
(B) to the extent allocable to other activities,
(4) tax-exempt interest,
(5) applicable net AMT adjustment separately computed for
(A) passive loss limitation activities, and
(B) other activities,
(6) general credits,
(7) low-income housing credit determined under section 42,
(8) rehabilitation credit determined under section 47,
(9) foreign income taxes, and
(10) other items to the extent that the Secretary determines that the separate treatment of such items is appropriate.
(b) Separate computations 
In determining the amounts required under subsection (a) to be separately taken into account by any partner, this section and section 773 shall be applied separately with respect to such partner by taking into account such partners distributive share of the items of income, gain, loss, deduction, or credit of the partnership.
(c) Treatment at partner level 

(1) In general 
Except as provided in this subsection, rules similar to the rules of section 702 (b) shall apply to any partners distributive share of the amounts referred to in subsection (a).
(2) Income or loss from passive loss limitation activities 
For purposes of this chapter, any partners distributive share of any income or loss described in subsection (a)(1) shall be treated as an item of income or loss (as the case may be) from the conduct of a trade or business which is a single passive activity (as defined in section 469). A similar rule shall apply to a partners distributive share of amounts referred to in paragraphs (3)(A) and (5)(A) of subsection (a).
(3) Income or loss from other activities 

(A) In general 
For purposes of this chapter, any partners distributive share of any income or loss described in subsection (a)(2) shall be treated as an item of income or expense (as the case may be) with respect to property held for investment.
(B) Deductions for loss not subject to section 67 
The deduction under section 212 for any loss described in subparagraph (A) shall not be treated as a miscellaneous itemized deduction for purposes of section 67.
(4) Treatment of net capital gain or loss 
For purposes of this chapter, any partners distributive share of any gain or loss described in subsection (a)(3) shall be treated as a long-term capital gain or loss, as the case may be.
(5) Minimum tax treatment 
In determining the alternative minimum taxable income of any partner, such partners distributive share of any applicable net AMT adjustment shall be taken into account in lieu of making the separate adjustments provided in sections 56, 57, and 58 with respect to the items of the partnership. Except as provided in regulations, the applicable net AMT adjustment shall be treated, for purposes of section 53, as an adjustment or item of tax preference not specified in section 53 (d)(1)(B)(ii).
(6) General credits 
A partners distributive share of the amount referred to in paragraph (6) of subsection (a) shall be taken into account as a current year business credit.
(d) Operating rules 
For purposes of this section
(1) Passive loss limitation activity 
The term passive loss limitation activity means
(A) any activity which involves the conduct of a trade or business, and
(B) any rental activity.

For purposes of the preceding sentence, the term trade or business includes any activity treated as a trade or business under paragraph (5) or (6) of section 469 (c).

(2) Tax-exempt interest 
The term tax-exempt interest means interest excludable from gross income under section 103.
(3) Applicable net AMT adjustment 

(A) In general 
The applicable net AMT adjustment is
(i) with respect to taxpayers other than corporations, the net adjustment determined by using the adjustments applicable to individuals, and
(ii) with respect to corporations, the net adjustment determined by using the adjustments applicable to corporations.
(B) Net adjustment 
The term net adjustment means the net adjustment in the items attributable to passive loss activities or other activities (as the case may be) which would result if such items were determined with the adjustments of sections 56, 57, and 58.
(4) Treatment of certain separately stated items 

(A) Exclusion for certain purposes 
In determining the amounts referred to in paragraphs (1) and (2) of subsection (a), any net capital gain or net capital loss (as the case may be), and any item referred to in subsection (a)(11), shall be excluded.
(B) Allocation rules 
The net capital gain shall be treated
(i) as allocable to passive loss limitation activities to the extent the net capital gain does not exceed the net capital gain determined by only taking into account gains and losses from sales and exchanges of property used in connection with such activities, and
(ii) as allocable to other activities to the extent such gain exceeds the amount allocated under clause (i).

A similar rule shall apply for purposes of allocating any net capital loss.

(C) Net capital loss 
The term net capital loss means the excess of the losses from sales or exchanges of capital assets over the gains from sales or exchange of capital assets.
(5) General credits 
The term general credits means any credit other than the low-income housing credit, the rehabilitation credit, and the foreign tax credit.
(6) Foreign income taxes 
The term foreign income taxes means taxes described in section 901 which are paid or accrued to foreign countries and to possessions of the United States.
(e) Special rule for unrelated business tax 
In the case of a partner which is an organization subject to tax under section 511, such partners distributive share of any items shall be taken into account separately to the extent necessary to comply with the provisions of section 512 (c)(1).
(f) Special rules for applying passive loss limitations 
If any person holds an interest in an electing large partnership other than as a limited partner
(1) paragraph (2) of subsection (c) shall not apply to such partner, and
(2) such partners distributive share of the partnership items allocable to passive loss limitation activities shall be taken into account separately to the extent necessary to comply with the provisions of section 469.

The preceding sentence shall not apply to any items allocable to an interest held as a limited partner.