107 STAT. 1268 PUBLIC LAW 103-123—OCT. 28, 1993 "(B) the term 'regular-rate category* means any class of mail or kind of mailer, other than a class or kind referred to in paragraph (3)(A) or section 2401(c); and "(C) the term 'institutional-costs contribution', as used with respect to a class of mail or kind of mailer, means that portion of the estimated revenues to the Postal Service from such class of mail or kind of mailer which remains after subtracting an amount equal to the estimated costs attributable to such class of mail or kind of mailer. "(3)(A) Except as provided in paragraph (4) or (5), rates of postage for a class of mail or kind of mctiler under former section 4358, 4452(b), 4452(c), 4554(b), or 4554(c) of this title shall be established in a manner such that the estimated revenues to be received by the Postal Service from such class of mail or kind of mailer shall be equal to the sum of— "(i) the estimated costs attributable to such class of mail or kind of mailer; and "(ii) the product derived by multiplying the estimated costs referred to in clause (i) by the applicable percentage under subparagraph (B). "(B) The applicable percentage for any class of mail or kind of mailer referred to in subparagraph (A) shall be the product derived by multiplying— "(i) the percentage which, for the most closely corresponding regular-rate category, the institutional-costs contribution for such category represents relative to the estimated costs attributable to such category of mail, times "(ii)(I) one-twelfth, for fiscal year 1994; "(II) one-sixth, for fiscal year 1995; "(III) one-fourth, for fiscal ye£ur 1996; "(IV) one-third, for fiscal year 1997; "(V) five-twelfths, for fiscal year 1998; and "(VI) one-half, for any fiscal year after fiscal year 1998. "(C) Temporary special authority to permit the timely implementation of the preceding provisions of this paragraph is provided under section 3642. "(D) For purposes of establishing rates of postage under this subchapter for any of the classes of mail or kinds of mailers referred to in subparagraph (A), subclauses (I) through (V) of subparagraph (B)(ii) shall be deemed amended by striking the fraction specified in each such subclause and inserting 'one-half. "(4) The rates for the advertising portion of any mail matter under former section 4358(d) or 4358(e) of this title shall be equal to the rates for the advertising portion of the most closely corresponding regular-rate category of mail, except that if the advertising portion does not exceed 10 percent of the issue of the publication involved, the advertising portion shall be subject to the same rates as apply to the nonadvertising portion. "(5) The rates for any advertising under former section 4358(f) of this title shall be equal to 75 percent of the rates for advertising contained in the most closely corresponding regular-rate category of mail.". (2) SPECIAL AUTHORITY.— Subchapter III of chapter 36 is amended by adding at the end the following:
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