Pub. L. 102-486, tit. XIX, subtit. B, sec. 1935
INCREASE IN BACKUP WITHHOLDING RATE.
SEC. 1935. INCREASE IN BACKUP WITHHOLDING RATE. (a) In General.— Section 3406(a)(1) is amended by striking “20 percent” and inserting “31 percent”. (b) Effective Date.— The amendment made by subsection (a) shall apply to amounts paid after December 31, 1992.