@Tax_Dad83 , per the IRS view of life your wages are earned where you actually perform the work. Thus you reside in Missouri and perform work in Missouri and therefore Missouri is the one whom should be taxing you , no matter where the monies are sourced from. Your employer should have been withholding taxes for the state where you are resident.
Generally in such cases you amend your resident state return and at the same time file a form ( each state has one ) with other state requesting a refund of all withholdings.
Does that make sense ?
pk
