Is a merchant's license required to sell over the internet from your own website?

Requirements vary by state and the best thing to do is to check with your secretary of state. Different states may or may not require a license for a particular type of business. A great resource is the U.S. Small Business Administration website. It has a lot of useful information different laws and regulations, as well as opportunities. For licenses and permits you can check here: http://business.gov/guides/licenses_and_permits/. Just scroll down and locate your state. It even allows you to search by ZIP code.