CA and Iowa. CA is the big concern since it is community property. See Married/RDP filing separately | FTB.ca.gov. First, it must be determined if you meet all the conditions to file separately claiming all of your income or if you would both need to file a return each claiming your half of the income. Determine if you are actually better to file a MFJ return and only claim CA income or if you really want to file MFS.
Iowa- filing status -allows MFJ while only claiming income from Iowa. It also allows MFS with two options, combined on same return or separate.
Honestly, my guess would be that you should file MFJ for all 3 states. Review your situation and the rules before making a decision.
@Every year
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