D.B.A. or "Doing Business As" is not only a cool bar in the East Village, it also refers to individuals (sole proprietorships), partnerships, corporations and other entities that do business under a name different from their real name. For example, Joe Smith operates a computer service business under the name "Computer Geeks to the Rescue," (fictional example) and Town Sports International, LLC operates a popular gym under the name "New York Sports Club" (real life example.)
When you do business under a name different from your real name, you have to file a business certificate either with the county clerk of your county or with the Secretary of State in Albany. Here are the rules:
1. For Individuals and Partnerships
If you conduct business under an assumed name as an individual (sole proprietor) or partnership, you must file a "certificate of assumed name" or "business certificate" in the county in which you conduct business. Such certificate basically has to set forth the real name and the address of your business and certain other information ( New York General Business Law Section 130(1)(a) .)
In New York County, you have to file your business certificate with the County Clerk in the basement at 60 Centre Street. The necessary form can be purchased at the little coffee shop on the first floor next to the security lines at the entrance. The filing fee is $150. For more information see here.
If you have more than one business under assumed names, you can file more than one business certificate.
2. For Corporations and other Entities
If you conduct business under an assumed name as a corporation, limited liability company or limited partnership, you also must file a business certificate (New York General Business Law Section 130(1)(b).)
This time, however, you have to file the certificate with the Secretary of State. The filing fee is $25. However, for corporations it can become expensive. They collect an extra $100 for each county within New York in which the corporation does business and an extra $25 for each county outside of New York City, with a maximum fee of $1,950.
For more information, including a pdf form with instructions, see here.
[Post updated February 2011]
p.s. photo by Beau Wade


What if you have a New York S corp doing business online under a different name?
Posted by: ray ban aviators | May 18, 2011 at 05:56 AM
Hi,
Can I file for more than one DBA if I am sole proprietor?
Posted by: justin | February 25, 2011 at 02:41 PM
I am interested in the answer to Lynn's question.
I am also planning on selling local services and online products. And I have considered a dba for those products.
It would seem like overkill to have to file in all those different counties...but I wouldn't put that sort of this past NY.
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Posted by: Bail bondsman Las Vegas | October 06, 2010 at 07:39 AM
Great article -- but the link is broken where you write "For more information, including a pdf form with instructions, see here."
It says they moved their website, but I don't know which form you were linking to? Thanks!
Posted by: Experience the Big Apple | September 19, 2010 at 07:18 PM
What do small business owners have to do?
Posted by: Long Island Landscaping | August 25, 2010 at 07:39 AM
I have the same question. We are starting an internet business in NYS where we will be selling both digital info and tangible products. We will be selling our products under the name (DBA) of our URL, and not our S-corporation entity name.
What if you have a New York S corp doing business online under a different name? Do you still have to file a DBA for all the New York counties? Or just in the county where your business is located and has a physical presence (address)?
We plan to sell our products statewide (as well as nationwide).
Posted by: Lynn | May 04, 2010 at 05:40 PM