I live in MO but did a clinical research trial in KS. Do I have to file a KS state tax return?

[RachelM]

I live in MO but did a clinical research trial in KS and received a 1099-misc with the income reported as "other income" box 3.  Do I have to report that income as having been earned in KS and file a KS return, or since I live in MO, do I just include that as part of my MO income?  The 1099 doesn't even have KS anywhere on it, since the company headquarters is in North Carolina.  I don't imagine that KS even has any record of the money anyway?

On a similar note, my son has taxable grant money that was more than his college tuition.  (He used it for room and board, but it is still taxable.)  He is a MO resident, but went to school in Idaho.  Does that money get reported as earned in MO or in ID?  

[TomD8]

What if I am a resident of another state with income from Kansas?

You are required to file a Kansas income tax return. File as a nonresident and complete Kansas Schedule S, Part B.

Answer is from:

https://www.ksrevenue.org/faqs-taxii.html

Your son's grant money, if received while living in Idaho or from an Idaho source, is taxable by Idaho.  See "Student" in this Idaho tax reference: https://tax.idaho.gov/i-2014.cfm?seg=specificc 

All out-of-state income received by you or your son is also taxable by your home state of MO.  MO allows a credit on its tax return for taxes paid to another state, so neither of you will be double-taxed.  But you each must include the out-of-state income on your MO tax return.  In TurboTax, complete the out-of-state tax returns before the home state tax returns, so that the credit flows properly.