The Tax Adjustment Act of 1966 was one of several major tax enactments by the United States Congress in 1966. Among other things, it modified the withholding of taxes: instead of a 14% withhold rate, it introduced a graduated rate through 30%. Also, it added section 3402 to the Internal Revenue Code, allowing a taxpayer to elect additional withholding allowances. Also, it introduced section 276 to the Code, allowing a deduction for payments made for advertising in political programs or admission charges to political conventions.