I work remotely as an independent contractor from Maryland for clients in DC, MA, and CA. I am a video editor. Do I have to file as a nonresident in MA and CA? I have been paying estimated taxes in MD but now am realizing since the majority of my freelance work is for out of state clients I probably owe to those states instead. I guess I will pay to CA and MA at tax time and get a refund from MD? I know the general rule is that if you don't go to the other states for the work, you don't owe but sounds like maybe CA and MA are exceptions?
Thanks
