There are a number of different regulations and licenses that a small business has to deal with. The most often overlooked is the requirement from each city for specific licensing.
The State of Wisconsin requires licenses for a number of businesses from Accountants and Acupuncturists to Wild Rice Harvester and X-Ray Services. You can see the complete list here. However, each city or municipality also has its own set of license and business requirements that need to be complied with. Often times these are much more specific than the State requirements. Read more