Pub. L. 94-12, tit. II, sec. 202
INCREASE IN PERCENTAGE STANDARD DEDUCTION.
SEC. 202. INCREASE IN PERCENTAGE STANDARD DEDUCTION. (a) Increase.— Subsection (b) of section 141 (relating to percentage standard deduction) is amended to read as follows: “(b) Percentage Standard Deduction.— The percentage standard deduction is an amount equal to 16 percent of adjusted gross income but not to exceed— “(1) $2,600 in the case of— “(A) a joint return under section 6013, or “(B) a surviving spouse (as defined in section 2(a)), “(2) $2,300 in the case of an individual who is not married and who is not a surviving spouse (as so defined), or “(3) $1,300 in the case of a married individual filing a separate return.” (b) Conforming Amendment.— Subparagraph (B) of section 3402 (m)(1) (relating to withholding allowances based on itemized deductions) is amended to read as follows: “(B) an amount equal to the lesser of (i) 16 percent of his estimated wages, or (ii) $2,600 ($2,300 in the case of an individual who is not married (within the meaning of section 143) and who is not a surviving spouse (as defined in section 2(a))).”