49 C.F.R. § 24.402
(a) Eligibility. A tenant or homeowner displaced from a dwelling is entitled to a payment not to exceed $9,570 for rental assistance, as computed in accordance with paragraph (b) of this section, or down payment assistance, as computed in accordance with paragraph (c) of this section, if such displaced person:
(b) Rental assistance payment—(1) Amount of payment. An eligible displaced person under paragraph (a) of this section who rents a replacement dwelling is entitled to a payment not to exceed $9,570 for rental assistance. (See § 24.404) Such payment shall be 42 times the amount obtained by subtracting the base monthly rental for the displacement dwelling from the lesser of:
(2) Base monthly rental for displacement dwelling. The base monthly rental for the displacement dwelling is the lesser of:
(iii) The total of the amounts designated for shelter and utilities if the displaced person is receiving a welfare assistance payment from a program that designates the amounts for shelter and utilities.
Note 1 to paragraph (b)(2): The Survey's income limits are updated annually and are available on FHWA's website at https://www.fhwa.dot.gov/real_estate/low_income_calculations/index.cfm.