New York Codes, Rules and Regulations
Title 21 - Miscellaneous
Chapter LXXVII - New York Local Government Assistance Corporation
Subchapter C - Prompt Payment Policy
Part 9770 - Prompt Payment Policy
Section 9770.10 - Predetermined interval payments

A proper invoice submitted by the contractor shall be required to initiate any payment, except where the contract provides that the contractor will be paid at predetermined intervals without having to submit an invoice for each such scheduled payment and, for the purposes of determining eligibility for payment of interest and subject to the tolling and time-to-rectify provisions of sections 9770.7 and 9770.8 of this Part, the date by which contract payment must be made in order for the corporation not to become liable for interest payments shall be the payment due date specified in accordance with the contract.