; (C) may, with respect to sales, fuel, and other excise tax estimates, submit estimates to the Secretary either monthly or quarterly, depending on when such taxes are collected; and (D) shall, with respect to income and property taxes, submit estimates to the Secretary quarterly, and shall adjust for delays in payment dates. (c) Payment of grants (1) Timing The Secretary shall make grant payments to a State under this section not later than 15 days after the date on which the Secretary receives a loss estimate under subsection (b)(1)(B). (2) Pro rata distribution If, with respect to a month, the Secretary does not have sufficient funds available under this section to make full grant payments to all States based on the loss estimates submitted to the Secretary, the Secretary shall make pro rata payments to the States based on each State’s share of the aggregate national amount of losses submitted to the Secretary for the applicable month. (3) Treatment of overpayments With respect to a State, an overpayment made by the Secretary in a prior month shall decrease the following month’s payment or, if an overpayment occurs in the final month of the Program, the Secretary may treat such overpayment as a debt of the State to the Federal Government. (d) Distribution to political subdivisions A State that receives a grant under this section shall distribute a percentage of such grant to each political subdivision of the State in an amount equal to the percentage that such political subdivision’s loss made up of the revenue loss to the State as whole, as reported to the Secretary. (e) Program termination The Secretary’s authority to make grants under this section shall terminate on the earlier of— (1) the date on which funds are no longer available to carry out this section