State tax filing

They didn't take Maryland out either . No state taxes at all , I lived in pa all year have for 20 .. it a new job my old job always took it out I just assumed they did as well so I paid till about March when I left my old job started new job in march and no longer was paying in . When I filed I didn't notice the new job wasn't added to the state return so the money I made at the new job was never added so I have no idea what I owe . I hope that helps it make better sense