it depends. How does Turbo Tax incorrectly fill out the form? I ran a sample test in my program and recorded information that was strictly under my name and received the full amount of the credit. I ran this in Turbo Tax Online thus if you were using the software version, this may make a difference. Check your entries in the program to make sure everything is reported in your name and not your spouse's.
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I am doing a joint return using a cd version of turbotax.
I have a misc. maternity home credit in excess of $100 in my name only.
My MO taxes are less than 100.
Turbo tax applies the correct credit for me on the MO-TC but also applies $7 on my spouses.
I cannot go into the "forms" option and change this.