return for the taxable year. (7) Nonresident aliens If the taxpayer is a nonresident alien individual for any portion of the taxable year, this section shall apply only if such individual is treated as a resident alien of the United States for purposes of this chapter by reason of an election under subsection (g) or (h) of section 6013. (8) Restrictions on taxpayers who improperly claimed credit in prior year (A) Taxpayers making prior fraudulent or reckless claims (i) In general No credit shall be allowed under this section for any taxable year in the disallowance period. (ii) Disallowance period For purposes of clause (i), the disallowance period is— (I) the period of 10 taxable years after the most recent taxable year for which there was a final determination that the taxpayer’s claim of credit under this section was due to fraud, and (II) the period of 2 taxable years after the most recent taxable year for which there was a final determination that the taxpayer’s claim of credit under this section was due to reckless or intentional disregard of rules and regulations (but not due to fraud). (B) Taxpayers making improper prior claims In the case of a taxpayer who is denied credit under this section for any taxable year as a result of the deficiency procedures under subchapter B of chapter 63, no credit shall be allowed under this section for any subsequent taxable year unless the taxpayer provides such information as the Secretary may require to demonstrate eligibility for such credit. (g) Inflation adjustment (1) In general In the case of a taxable year beginning after 2018, the $80,000 amount in subsection (c)(1)(A)(ii) shall each be increased by an amount equal to— (A) such dollar amount, multiplied by (B) the cost-of-living adjustment determined under section 1(c)(2)(A) for the calendar year in which the taxable year begins, determined by substituting calendar year 2017 for calendar year 2016 in clause (ii) thereof. (2) Rounding If any amount as adjusted under paragraph (1) is not a multiple of $1,000,