; and (B) by striking $3 and inserting $20 . (b) Indexing Section 6096 of such Code is amended by adding at the end the following new subsection: (d) Indexing of amount designated (1) In general With respect to each taxable year after 2017, each amount referred to in subsection (a) shall be increased by the percent difference described in paragraph (2), except that if any such amount after such an increase is not a multiple of $1, such amount shall be rounded to the nearest multiple of $1. (2) Percent difference described The percent difference described in this paragraph with respect to a taxable year is the percent difference determined under section 315(c)(1)(A) of the Federal Election Campaign Act of 1971 with respect to the calendar year during which the taxable year begins, except that the base year involved shall be 2016. . (c) Ensuring tax preparation software does not provide automatic response to designation question Section 6096 of such Code, as amended by subsection (b), is amended by adding at the end the following new subsection: (e) Ensuring tax preparation software does not provide automatic response to designation question The Secretary shall promulgate regulations to ensure that electronic software used in the preparation or filing of individual income tax returns does not automatically accept or decline a designation of a payment under this section. . (d) Public information program on designation Section 6096 of such Code, as amended by subsections (b) and (c), is amended by adding at the end the following new subsection: (f) Public information program (1) In general The Federal Election Commission shall conduct a program to inform and educate the public regarding the purposes of the Presidential Election Campaign Fund, the procedures for the designation of payments under this section, and the effect of such a designation on the income tax liability of taxpayers. (2) Use of funds for program Amounts in the Presidential Election Campaign Fund shall be made available to the Federal Election