N.Y. Correct. Law § 108

§ 108. Withdrawal and termination. This compact shall continue in\nforce and remain binding upon a party state until it shall have enacted\na statute repealing the same and providing for the sending of formal\nwritten notice of withdrawal from the compact to the appropriate\nofficials of all other party states. An actual withdrawal shall not\ntake effect until one year after the notices provided in said statute\nhave been sent. Such withdrawal shall not relieve the withdrawing state\nfrom its obligations assumed hereunder prior to the effective date of\nwithdrawal. Before the effective date of withdrawal, a withdrawing state\nshall remove to its territory, at its own expense, such inmates as it\nmay have confined pursuant to the provisions of this compact.\n