Under NY tax law, each selling vendor must be registered with the New York State Sales Tax Bureau. Permits must be obtained from the tax bureau in advance. State tax application form DTF17 and Instructions may be downloaded here. The form and instructions are in the .pdf format.
The New York state sales tax office may be reached by telephone from 830am to 425pm Monday through Friday. For tax information, call 800-225-5829. For forms and publications, call 800-462-8100.