The business license, state by state.

Most states do not issue a single general state-wide business license, so the honest answer for much of the country is that there is nothing to get at that level. A few states run the opposite rule and require one of every entity operating there, whatever it does. Either way the state layer is only the first question, because county, city and industry requirements sit underneath it and apply to almost everyone.

In practice the words are used loosely and the distinction that matters is who issues the document. A general license comes from a government that wants to know you are operating in its territory, usually a state, county or city. A permit is tied to an activity and comes from whichever body regulates that activity. One business commonly holds several of each, issued by bodies that do not talk to one another.

Licensing generally follows where you operate rather than where your customers are, which is why the county and city layers matter so much. Selling into a state can still create obligations of a different kind, particularly around sales tax registration, and physical presence, employees or premises change the analysis again. The state pages set out what triggers a requirement locally, which is where that question gets answered.

There is a federal layer, and for most businesses it never applies. It attaches to specific regulated activities rather than to businesses in general, so the great majority of companies deal only with state, county, city and industry requirements. Where it does apply it sits on top of everything else rather than replacing any of it, and the state pages flag it where it is relevant.

Deliberately, because nothing else works. Each license on the list has its own renewal date set by whichever body issued it, and those dates rarely line up with each other or with your formation anniversary. A business with a state registration, a city license and two industry permits is carrying four separate clocks, which is why renewal tracking is treated as its own piece of work rather than an afterthought.

That depends on which layer was missed and which body issued it, since every issuing authority sets its own consequences. The practical problem is usually discovery rather than the rule itself: a missing license surfaces during an inspection, a lease, a contract award or an insurance question, at which point the work has to be done anyway and under time pressure. The state pages set out what applies locally.