If i work in Missouri but work in Kansas should box 15 say MO or KS?

If i work in Missouri but work in Kansas should box 15 say MO or KS?

I think one of those "works"was suppose to be "live".

The answer is: it is usually your work state. But it could be either or both, depending on how much bother you employer wants to go through. What ever it says is probably accurate. 

The general rule is: your report all your income on your home state return, even the income earned out of state. You file a non-resident state return for the state you worked in and pay tax to that state. Your home state will give you a credit, or partial credit, for what you paid the non-resident state.

I'll assume you live in KS. You will have to file a non resident MO state return and pay MO tax on the income earned there.. You will also file a KS full year resident return and calculate tax on ALL your income. KS will give you a credit, or partial credit, for the tax you pay MO So, there will be little or no double taxation. Do the nonresident state return first.