New York Consolidated Laws, Public Authorities Law - PBA § 566. Exemptions from taxation

It is hereby found, determined and declared that the creation of the authority and the carrying out of its corporate purposes is in all respects for the benefit of the people of the state of New York, for the improvement of their health, welfare and prosperity, and, in the case of some of the said purposes, for the promotion of their traffic, and is a public purpose, and that, in the case of those purposes which consist of vehicular bridges, vehicular tunnels and approaches thereto, the project is an essential part of the public highway system, and that the authority will be performing an essential governmental function in the exercise of the powers conferred upon it by this title, and the state of New York covenants with the holders of the bonds that the authority shall be required to pay no taxes or assessments upon any of the property acquired by it or under its jurisdiction, control, possession or supervision or upon its activities in the operation and maintenance of the project or any tolls, revenues or other income received by the authority and that the bonds of the authority and the income therefrom shall at all times be exempt from taxation, except for transfer and estate taxes.  This section shall constitute a covenant and agreement with the holders of all bonds issued prior to January first, nineteen hundred thirty-nine.