Does it matter how federal adjustments are allocated between spouses in Missouri? Can i put all my deductions or IRA contributions in her name if it lowers our tax due?

[KathrynG3]

No, the IRA contributions should be allocated as received. The IRS associates IRA contributions per taxpayer, and any calculation of excess contributions are based on individual income. 

Secondly, when splitting income for Line 1 of the MO-1040, this is only for IRA distributions. See page 7 of the 2019 MO-1040 Individual Income Tax Long Form Instructions.

Follow TurboTax Employee Tax Expert Katrina B48 instructions for entering 2019 IRA Contributions instructions:

Enter your 2019 IRA contributions (money you put into your IRA) as follows:

1. Log in and open your return
2. Type ira contributions into the search box in the upper right screen
3. Select the Jump to link in the search results.
4. We'll take you to the Traditional IRA and Roth IRA screen where you can start the IRA interview.

@cpajoehat67