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?
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.