I've been looking into incorporating with a partner, and we're both in different states, and obviously looking over Delaware's incorporation laws.
With incorporation, each state says that you need to file for registration within each state that you want to "do business in".
Does this "doing business" include having employed workers?
Does it include having a physical address?
Does it include accepting money from people from this state? (unlikely, but it could be interpreted that way)
Would incorporating in DE and registering in another state have any additional costs besides the registration fees for those other states? (such as income taxes, etc)