According to this table, Form MO-NRI is already available in the TurboTax 1040 products. Please clarify why you are asking about this form.
For my non-resident return, the software never asked for the information on this form (% of income from Missouri) to reduce the amount of tax owed to Missouri.
Did you work through Missouri before starting your resident state return? To ensure accurate calculations, we strongly recommend preparing your nonresident state return before you prepare any resident or part-year state returns. You may wish to work through the Missouri state return again. Or delete your resident state, go through Missouri, then complete your resident state.
I have same problem. I moved to mo from tn in November. Tn doesn’t tax income so I can’t use mo cri. But TurboTax doesn’t offer nri
The form is available. If you are using TurboTax Online, log completely out of the TurboTax website, then clear your browser's cache and delete cookies. If you are using TurboTax CD/Download software, you will need to update the program.
Form MO-NRI is still missing from the desktop version.