I've been using FreeTaxUSA for several years and am somewhat satisfied.
The first line of the MO state return apportions income between spouses based on data in worksheet 1 of the instructions according to the tax form. However I can find no way to access the worksheet or understand how income is apportioned between the spouses. While the combined total is correct, there is no way to validate the apportionment.
Has anybody else experienced this? Is there any way to validate the data?