modified adjusted gross income
(2) Household income (A) Household income The term “household income” means, with respect to any taxpayer, an amount equal to the sum of— (i) the modified adjusted gross income of the taxpayer, plus (ii) the aggregate modified adjusted gross incomes of all other individuals who— (I) were taken into account in determining the taxpayer’s family size under paragraph (1), and (II) were required to file a return of tax imposed by section 1 for the taxable year. (B) Modified adjusted gross income The term “modified adjusted gross income” means adjusted gross income increased by— (i) any amount excluded from gross income under section 911, (ii) any amount of interest received or accrued by the taxpayer during the taxable year which is exempt from tax, and (iii) an amount equal to the portion of the taxpayer’s social security benefits (as defined in section 86(d) ) which is not included in gross income under section 86 for the taxable year.