(4) Excess farm loss For purposes of this subsection— (A) In general The term “excess farm loss” means the excess of— (i) the aggregate deductions of the taxpayer for the taxable year which are attributable to farming businesses of such taxpayer (determined without regard to whether or not such deductions are disallowed for such taxable year under paragraph (1)), over (ii) the sum of— (I) the aggregate gross income or gain of such taxpayer for the taxable year which is attributable to such farming businesses, plus (II) the threshold amount for the taxable year. (B) Threshold amount (i) In general The term “threshold amount” means, with respect to any taxable year, the greater of— (I) $300,000 ($150,000 in the case of married individuals filing separately), or (II) the excess (if any) of the aggregate amounts described in subparagraph (A)(ii)(I) for the 5-consecutive taxable year period preceding the taxable year over the aggregate amounts described in subparagraph (A)(i) for such period. (ii) Special rules for determining aggregate amounts For purposes of clause (i)(II)— (I) notwithstanding the disregard in subparagraph (A)(i) of any disallowance under paragraph (1), in the case of any loss which is carried forward under paragraph (2) from any taxable year, such loss (or any portion thereof) shall be taken into account for the first taxable year in which a deduction for such loss (or portion) is not disallowed by reason of this subsection, and (II) the Secretary shall prescribe rules for the computation of the aggregate amounts described in such clause in cases where the filing status of the taxpayer is not the same for the taxable year and each of the taxable years in the period described in such clause. (C) Farming business (i) In general The term “farming business” has the meaning given such term in section 263A(e)(4). (ii) Certain trades and businesses included If, without regard to this clause, a taxpayer is engaged in a farming business with respect to any agricultural or horticultural commodity— (I) the term “farming business” shall include any trade or business of the taxpayer of the processing of such commodity (without regard to whether the processing is incidental to the growing, raising, or harvesting of such commodity), and (II) if the taxpayer is a member of a cooperative to which subchapter T applies, any trade or business of the cooperative described in subclause (I) shall be treated as the trade or business of the taxpayer. (D) Certain losses disregarded For purposes of subparagraph (A)(i), there shall not be taken into account any deduction for any loss arising by reason of fire, storm, or other casualty, or by reason of disease or drought, involving any farming business.
26 USC § 461(j)(4)
None identified. Default scope is assumed to be the entire title.