1. Short title This Act may be cited as the State Municipal Assistance for Response and Transition Act or the SMART Act . 2. Coronavirus Local Community Stabilization Fund (a) In general Title VI of the Social Security Act , as added by section 5001(a) of the Coronavirus Aid, Relief, and Economic Security Act ( Public Law 116–136 ), is amended by adding at the end the following: 602. Coronavirus Local Community Stabilization Fund (a) Appropriation (1) In general Out of any money in the Treasury of the United States not otherwise appropriated, there are appropriated for making payments to States under this section, $500,000,000,000 for fiscal year 2020, to remain available until expended. (2) Reservation of funds Of the amount appropriated under paragraph (1), the Secretary shall reserve $16,000,000,000 of such amount for making payments to Tribal governments under subsection (c)(7). (b) Authority To make payments (1) In general The Secretary shall pay each State the following amounts: (A) Not later than 30 days after the date of enactment of this section, the relative population proportion amount determined for the State under subsection (c)(1). (B) Not later than 30 days after the date of enactment of this section, the relative infected population proportion amount determined for the State under subsection (c)(2). (C) As soon as practicable after December 31, 2020, the relative lost revenue proportion amount determined for the State under subsection (c)(3). (2) Amounts reserved for payments to local governments A State shall reserve 1/3 of each amount received by the State under paragraph (1) to make direct payments to units of local government in the State under subsection (c)(6). (c) Payment amounts (1) Relative population proportion amount Subject to paragraph (5), the relative population proportion amount for a State is the product of— (A) $161,333,333,333; and (B) the amount equal to the quotient of— (i) the population of the State