Your Missouri tax return begins with your federal adjusted gross income, as reported on your federal return. It then applies all allowable deductions and computes the tax on all of your income. The tax is then reduced by either the Missouri resident credit (Form MO-CR) or (as in your case) the Missouri income percentage (Form MO-NRI). The result for part-year residents is a prorated income tax based only on the income earned while a Missouri resident.
https://dor.mo.gov/forms/MO-NRI_2022.pdf
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
