26 U.S.C. § 63 — Taxable income defined
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“(2) Basic standard deduction For purposes of paragraph (1), the basic standard deduction is— (A) 200 percent of the dollar amount in effect under subparagraph (C) for the taxable year in the case of— (i) a joint return, or (ii) a surviving spouse (as defined in section 2(a)), (B) $4,400 in the case of a head of household (as defined in section 2(b)), or (C) $3,000 in any other case.”
Except as otherwise provided in this subsection, the term “standard deduction” means the sum of— (A) the basic standard deduction, and (B) the additional standard deduction.
(2) Basic standard deduction
For purposes of paragraph (1), the basic standard deduction is— (A) 200 percent of the dollar amount in effect under subparagraph (C) for the taxable year in the case of— (i) a joint return, or (ii) a surviving spouse (as defined in section 2(a)), (B) $4,400 in the case of a head of household (as defined in section 2(b)), or (C) $3,000 in any other case.
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