(a) In general. A recipient may only use funds to cover costs incurred during the period beginning March 3, 2021, and ending December 31, 2024, for one or more of the purposes enumerated in sections 602(c)(1) and 603(c)(1) of the Social Security Act, as applicable, including those enumerated in § 35.6, subject to the restrictions set forth in sections 602(c)(2) and 603(c)(2) of the Social Security Act, as applicable.

(b) Costs incurred. A cost shall be considered to have been incurred for purposes of paragraph (a) of this section if the recipient has incurred an obligation with respect to such cost by December 31, 2024.

(c) Return of funds. A recipient must return any funds not obligated by December 31, 2024. A recipient must also return funds obligated by December 31, 2024 but not expended by December 31, 2026.