(3) The amount of revenue allocated to the hospital insurance and Federal supplementary medical insurance trust funds shall be the same proportion as the hospital insurance rate (as defined in subsection (e)) bears to the combined Federal tax rate percentage (as defined in section 101(b)(3)). (c) Calendar Year 2019 Notwithstanding subsection (b), the revenue allocation pursuant to subsection (a) for calendar year 2019 shall be as follows: (1) 64.83 percent of total revenue to general revenue, (2) 27.43 percent of total revenue to the old-age and survivors insurance and disability insurance trust funds, and (3) 7.74 percent of total revenue to the hospital insurance and Federal supplementary medical insurance trust funds. (d) Old-Age, Survivors and Disability Insurance Rate The old-age, survivors and disability insurance rate shall be determined by the Social Security Administration. The old-age, survivors and disability insurance rate shall be that sales tax rate which is necessary to raise the same amount of revenue that would have been raised by imposing a 12.4 percent tax on the Social Security wage base (including self-employment income) as determined in accordance with chapter 21 of the Internal Revenue Code of 1986 as most recently in effect prior to the enactment of this Act. The rate shall be determined using actuarially sound methodology and announced at least 6 months prior to the beginning of the calendar year for which it applies. (e) Hospital Insurance Rate The hospital insurance rate shall be determined by the Social Security Administration. The hospital insurance rate shall be that sales tax rate which is necessary to raise the same amount of revenue that would have been raised by imposing a 2.9 percent tax on the Medicare wage base (including self-employment income) as determined in accordance with chapter 21 of the Internal Revenue Code of 1986 most recently in effect prior to the enactment of this Act. The rate shall be determined using actuarially sound methodology and announced at least 6