Set up IT Consulting LLC in Delaware but work from home in MD
Thanks in advance!
If you intend to use your home as an office and deduct related expenses you would create physical nexus and would need to have your company registered in Maryland either as domestic or foreign entity.
As far as other states go the answer would depend on the nature of your business activity in those states. Technically if you are just meeting clients (occasionally) in those states by itself it should not create physical nexus.