You are too late to e-file any tax return now---federal or state. E-filing is permanently closed for 2020 returns and will not re-open until they open up for 2021 returns next year.
https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...
And if your child's other parent is claiming her after you already filed and claimed the child then he has to mail his own return too since it is too late to e-file. The IRS will sort out who could rightfully claim the child.
You say you had to amend for custody reasons. Who is the custodial parent? Which parent did the child live with for at least 183 nights in 2020? You both need to know and understand the rules.
Are you the custodial parent? Do you have an agreement with the other parent to allow the other parent to claim them--due to divorce or that you live apart and share custody? Did one of you sign a Form 8332?
If there is a signed 8332 then the custodial parent retains the right to file as Head of Household, get earned income credit and the childcare credit. The non-custodial parent gets the child tax credit for children under the age of 17.
As far as the IRS is concerned, the custodial parent is the one with whom the child spent the most nights during the tax year--at least 183 nights.
If you are a non-married couple who live together then only one of you can claim the child(ren) and the one not claiming the child does not enter anything at all on their tax return about the child.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
