Deductions & credits

You have to enter the amount you received for the advance child tax credit payments.  It is on your IRS letter 6419.   If you do not claim those children on your 2021 tax return you may have to pay some of it back--depending on your income,

You say the father "wants" to claim one child.   Who did the children live with?   Are you the custodial parent?  Do you have a signed agreement with him as to who claims the children?

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 18.

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.

As for whether you have to pay it back if you do not claim the child:

TurboTax calculates the Repayment Protection.  This determines if a person is required to repay the advance CTC.

What is Repayment Protection?

Repayment protection is an income-based program that reduces the amount of excess advance Child Tax Credit payments you have to repay.

Full repayment protection equals $2,000, multiplied by the following:

• The number of qualifying children that the IRS took into account when estimating your advance Child Tax Credit payments, minus
• The number of qualifying children you’re claiming on your 2021 tax return.

To be eligible for full repayment protection, your adjusted gross income (AGI) for the 2021 tax year must be at or below the following:

• $60,000 if you are married and filing a joint return or if filing as a qualifying widow or widower;
• $50,000 if you are filing as head of household; and
• $40,000 if you are a single filer or you are married and filing a separate return. 

 You won’t qualify for any repayment protection if your modified AGI is at or above the amounts listed below based on the filing status on your 2021 tax return.

• $120,000 if you are married and filing a joint return or if filing as a qualifying widow or widower;
• $100,000 if you are filing as head of household; and
• $80,000 if you are a single filer or are married and filing a separate return.

For information on the definition of modified AGI, see Topic C: Calculation of the 2021 Child Tax Credit.