Amends the State Prompt Payment Act. Makes technical changes to eliminate obsolete provisions. Provides that, if an agency incurs an interest liability that cannot be charged to the same expenditure authority account to which the related goods or services were charged due to federal prohibitions, the agency may pay the interest from any moneys appropriated to the agency that are not otherwise prohibited to be used for the purpose of paying interest. Provides that, when a State official or agency responsible for administering a contract receives a bill or invoice from a contractor, that State official or agency shall confirm the date on which the bill or invoice was received within 15 business days of receipt and shall transmit any approved amount to the Comptroller within 30 days of receipt. Provides that a State official or agency that is responsible for administering a contract submits a voucher to the Comptroller for payment, the official or agency shall make available electronically the voucher number, the date of the voucher, and the amount of the voucher within 15 days after submitting the voucher to the Comptroller (currently, that information shall be made available promptly).