N.Y. Tax Law § 1213
Where a sale of tangible personal property or services, including prepaid telephone calling services, but not including other services described in subdivision (b) of section eleven hundred five of this chapter, including an agreement therefor, is made in any city, county or school district, but the property sold, the property upon which the services were performed or prepaid telephone calling or other service is or will be delivered to the purchaser elsewhere, such sale shall not be subject to tax by such city, county or school district. However, if delivery occurs or will occur in a city, county or school district imposing a tax on the sale or use of such property, prepaid telephone calling or other services, the vendor shall be required to collect from the purchaser, as provided in section twelve hundred fifty-four of this article, the aggregate sales or compensating use taxes imposed by the city, if any, county and school district in which delivery occurs or will occur, for distribution by the commissioner to such taxing jurisdiction or jurisdictions. For the purposes of this section delivery shall be deemed to include transfer of possession to the purchaser and the receiving of the property or of the service, including prepaid telephone calling service, by the purchaser. Notwithstanding the foregoing, where a transportation service described in paragraph ten of subdivision (c) of section eleven hundred five of this chapter begins in one jurisdiction but ends in another jurisdiction, any tax imposed pursuant to the authority of this article shall be due the jurisdiction or jurisdictions where the service commenced.
N.Y. Tax Law § 1213