Start a business: registration planner
Answer four questions and get a step-by-step list of where to form the business, which state tax and employer accounts to open, and what to file every year, with a link to each portal and the source for each step.
This planner covers state and federal registrations. It does not cover city or county licenses and taxes, professional licensing, or whether your activity in a state is enough to require registering there (nexus); those depend on the facts. Every step links to the agency page or statute it comes from. Where a source did not state something, such as a fee or a deadline for one kind of entity, the step leaves it out rather than guess, so a missing fee or filing means it was not confirmed, not that there is none. Informational only, not legal or tax advice.