US SB3863

Terminates the Hazardous Substance Superfund financing rate under Section 4611 of the Internal Revenue Code, effective January 1, 2026

Ends Treasury's authority to make advances to the Superfund, changing the termination date from December 31, 2032 to the date of this Act's enactment

Requires repayment of any outstanding advances on a quarterly basis from unobligated Superfund amounts until repaid in full

Introduced February 12, 2026 by Senator Barrasso with 9 Republican co-sponsors and referred to the Committee on Finance