What qualifies as income from a Pennsylvania source? Does the fact that a company is headquartered in PA automatically mean income from that company comes from a PA source? Is there a distinction for a nonresident who never worked in PA? For instance, would a nonresident, who worked remote full time, that received wages from a PA based company, be required to pay tax and file with PA as well as their resident state? If so, wouldn't that be double taxation?
