How do I obtain a sales tax ID (Certificate of Authority)?
To obtain a Certificate of Authority, you must file form DTF-17 “Application for Registration as a Sales Tax Vendor” with the NYS Department of Taxation and Finance at 20 days but no more than 90 days before you begin operating your business. If your application is approved, your Certificate of Authority will be mailed to you. You cannot legally conduct business until you have received your valid Certificate of Authority. To order forms and publications, call 1-800-462-8100. For general business tax information, call 1-800-972-1233.
