; and disruption by reason of compromised payment networks or other technological reasons, (II) staffing challenges, (III) decrease in sales or customers, or (IV) partial or full suspension of business. (iii) Small business For purposes of this subparagraph, the term small business means any trade or business if the gross receipts (as determined under the rules of section 448(c)(3), without regard to subparagraph (A) thereof) of such trade or business (when combined with all related trades or businesses) for the relevant taxable year do not exceed $999,999. For purposes of the preceding sentence, a trade or business shall be treated as related if it is a trade or business of the same person or of any person treated as one person under section 448(c)(2). For purposes of this clause, the term relevant taxable year means the last taxable year which ends before the date on which the qualified opportunity zone fund acquires the qualified opportunity fund property to which such trade or business relates. (iv) Application of subparagraph Clause (i) shall only apply with respect to qualified opportunity fund property acquired by a qualified opportunity zone fund during the 1-year period beginning on the date of the enactment of this subparagraph. . (b) Application of capital gains rate for taxable year in which investment is acquired Section 1400Z–2(b) of such Code is amended by adding at the end the following new paragraph: (3) Application of capital gains rates The rate of tax which applies to gain which is included in income as provided in this subsection shall not exceed the rate applicable to such gain in the taxable year in which the investment was acquired. Proper adjustments shall be made in the application of section 1(h) for the taxable year in which such gain is included in gross income to take into account the preceding sentence. . (c) Extension of deferral of gain invested in opportunity zones Section 1400Z–2(b)(1)(B) of such Code is amended to read as follows: (B) the date which is 7 years after the date on