How to Get Your New York Certificate of Authority

Registering for a New York Certificate of Authority is free and can be completed online through the NYS Department of Taxation and Finance.

What You Will Need Before Starting

Social Security Number for all responsible persons
Federal Employer Identification Number (EIN)
New York business address
Business entity type and formation documents
Estimated quarterly taxable sales
Date you began or will begin making sales

Step-by-Step Registration Process

Step 1: Access NYS Online Services

Visit tax.ny.gov/online and create a Business Online Services account or log in.

Step 2: Complete Form DTF-17

This is the Application for Registration as a Sales Tax Vendor. Complete it online or download the paper form.

Step 3: Submit Required Information

Business Information: Legal name, DBA, entity type, EIN
Owner Information: SSN and contact details for all responsible persons
Location Details: Physical address of each NY location
Business Activities: Products sold, services provided

Step 4: Receive Your Certificate

Processing takes 7-10 business days. Your Certificate of Authority will be mailed. You must display it at your place of business.

Important: Register Before Making Sales

Unlike some states, New York requires you to register and receive your certificate BEFORE making any taxable sales. Selling without a certificate is a misdemeanor.

After You Are Registered

Collect New York sales tax from customers
Use Form ST-120 for tax-exempt purchases for resale
File Form ST-100 (quarterly) or ST-809 (annual) returns

Related New York Guides

Rates and Fees � Understand New York’s complex local rates.

Business Licensing � Other licenses your NY business needs.