Hi @SL2134 Thank you for bring this to our attention. We have checked and do see this was reported to Lacerte Development. After being reveiwed by them, it was deemed that this is working as designed. According to the instructions for Form MO-1040, page 6, "If the amount you would otherwise report as your federal adjusted gross income would be a negative number, enter $0 on Line 1. Attach a copy of Federal Form 1040 or Federal Form 1040-SR."

Hope this helps, and thank you for your ongoing contributions to the community!