If you want to buy and sell multiple cars (not just the one you have now)
this is NY state rules - there is no federal license. - guess what you have to do.
You'll need to lay the groundwork for registering as a dealer by obtaining the following:
A Official Business Certificate of Registration from your county clerk
If you'll have employees, a federal employee ID number and proof of worker's compensation and disability insurance coverage
A sales tax number and a copy of the Certificate of Authority issued by the New York State Department of Taxation and Finance (assuming you will collect sales tax)
Proof of insurance that will cover vehicles owned or operated by the dealer and sporting dealer plates
A surety bond in an amount ranging from $10,000 to $50,000, depending on the type of dealership (see Original Facility Application Form VS-1 for a breakdown)
Franchise agreements with manufacturers of new vehicles you intend to sell (not required for selling used vehicles)
A Statement of Ownership or permission to use the place of business (Form VS-19)
A photocopy of the driver license or non-driver photo ID from the company's owner, president, or partner
You'll need to include all items in the above list when you send in your application, along with the appropriate application and business fees. You'll also need to have the following, which will be inspected as part of the review process for your application (these are explained further in the regulations):
Satisfactory premises in the state of New York with proper security for business records and display space for vehicles
A permanent sign
Bills of sale and other forms dealers use (you will need to buy these from the DMV; see Dealer Forms), and a book of registry for record keeping
http://www.dmv.org/ny-new-york/buy-sell/car-dealers/dealer-licensing.php
And then of course there is all the liability insurance you need to buy. You don't need that with guns - no liability.
= new reply since forum marked as read