How do we allocated multiple state tax refunds and student loan deductions on 2018 MO state tax return?

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My wife and I are IL residents. I work in MO. My wife works in IL. How do I allocated 2017 IL and MO tax refunds between MO source and non-MO source and between my wife and myself on our MO state return? I am having a similar issue for allocating 2018 student loan deductions on the same return.

[KrisD · Accepted solution]

Since you are both Illinois residents, it would all be allocated to Illinois. 

Only the earned (employment) income is taxable on your Missouri non-resident return.