Would work performed for a Missouri employer performed onsite (not online) at an Illinois location be subject to Missouri State Income tax?

[obrienkobey]

I work for an employer based out of St. Louis, Missouri and I am a resident of Illinois. Most of my work is performed either online or at different branches in Illinois, though I do work some days in Missouri. I noticed Turbo Tax asked me to enter my remote work income and I was wondering if both the online and the onsite Illinois work is considered remote work.

[MaryK4]

No, work performed in Illinois would not be subject to Missouri state income tax.  The remote work income would include both the online/home office and Illinois locations.  

[obrienkobey]

Thank you!!