You are correct. MO-A is broken and does not properly add results from Section A, line 5, Section B, line 9 and Section C, line 4 into Section D (Total Exemption). As a result the amount transferred to MO-1040, line 8 can be incorrect. I hope turbotax fixes this or there may be thousands of users (especially ones with public or private pensions) that will file inaccurate Missouri returns. I told turbotax about this but no idea if they will do anything. Meanwhile, I will have to look to use a different tax software vendor for my return.
