If your significant other has filed their return first, then your return maybe rejected. Two people cannot claim the same dependent. If your return gets rejected, then you can remove your dependent & then re-e-file.
If your return is accepted, you would have to amend your return to make any changes. Amended returns must be mailed. The amendment form (1040x for Federal) is not available in TurboTax until mid to late February. You would have to wait until the form is available to amend your return.
To amend a return, if you used TurboTax Online, simply log in to your account and select “Amend a return that was filed and accepted.” If you used the CD/download product, sign back into your return and select “Amend a filed return.”
Three weeks after mailing your amended return, you can start tracking it at the IRS Where's My Amended Return? tracking tool. Please allow at least 16 weeks for the IRS to process your amended return.
