Individual contributions— Section 8334(c) of title 5, United States Code, is
amended—
(B)
by adding at the end the following:
“(2) Notwithstanding any other provision of this subsection, the applicable percentage of basic pay under this subsection for civilian service by an employee or Member shall, for purposes of computing an amount—
“(A) for a period in calendar year 2014, be equal to the applicable percentage under this subsection for calendar year 2013 plus an additional 0.4 percentage point;
“(B) for a period in calendar year 2015, be equal to the applicable percentage under this subsection for calendar year 2014 (as determined under subparagraph (A)) plus an additional 0.4 percentage point;
“(C) for a period in calendar year 2016, be equal to the applicable percentage under this subsection for calendar year 2015 (as determined under subparagraph (B)) plus an additional 0.4 percentage point; and
“(D) for a period in any calendar year after 2016, be equal to the applicable percentage under this subsection for calendar year 2015 (as determined under subparagraph (C)).
“(3)
“(A) Notwithstanding subsection (a)(2), any excess contributions under subsection (a)(1)(A) (including the portion of any deposit under this subsection allocable to excess contributions) shall, if made by an employee of the United States Postal Service or the Postal Regulatory Commission, be deposited to the credit of the Postal Service Fund under section 2003 of title 39, rather than the Civil Service Retirement and Disability Fund.
“(B) For purposes of this paragraph, the term excess contributions, as used with respect to contributions made under subsection (a)(1)(A) by an employee of the United States Postal Service or the Postal Regulatory Commission, means the amount by which—
“(i) deductions from basic pay of such employee which are made under subsection (a)(1)(A), exceed
“(ii) deductions from basic pay of such employee which would have been so made if paragraph (2) had not been enacted.”