under section 4691 of the Internal Revenue Code of 1986, excluding the amount of the increase in households’ energy consumption that is financed by higher cost of living adjustments to Federal benefits that result from increased carbon costs by reason of such tax. (2) Monthly energy refund Subject to paragraph (3) and subsection (c)(2), the amount of the monthly energy refund for an eligible household under this section shall be— (A) if the household has 1, 2, 3, or 4 members, 1⁄12 of the amount estimated under paragraph (1) for such fiscal year for a household of the same size, rounded to the nearest whole dollar amount