Your best course of action is to file as Married Filing Jointly, even if one of you has little or no income. You receive the highest standard deduction when filing a MFJ.
If you choose to file as Married Filing Separately you will lose any Child and Dependent Care Credit and the Earned Income Tax Credit (if eligible). Also the Child Tax Credit is cut in half.
You can claim a child as a dependent if you file separately, but on only one of you can claim the child on their tax return.
See this TurboTax support FAQ for filing jointly versus separately - https://ttlc.intuit.com/community/married/help/is-it-better-for-a-married-couple-to-file-jointly-or-...
File Jointly and included with your tax return a Form 8379, Injured Spouse Allocation. So that your portion of the federal tax return is not seized.
See this TurboTax support FAQ for the Form 8379 - https://ttlc.intuit.com/community/accessing/help/how-do-i-file-form-8379-injured-spouse-allocation/0...
