Maybe yes, maybe no. It is safe to say that most small businesses probably do not need a license. For example, if you will be consulting (a typical and popular small business) it is doubtful that you need a license.

However most states have licensing requirements for certain types of businesses and you should check with your local government offices to see if your specific business needs a license. Examples of businesses requiring licensing include Barbers, Attorneys, Doctors, Dentists, Contractors, Insurance Brokers, Opticians, Veterinarians.