Only one parent can claim a child as a dependent on federal taxes in any given year
The IRS does not allow both parents to claim the same child on the same tax return. One parent claims the child, and the other does not. If both parents try to claim the same child, the IRS will reject one return or flag both for review, which delays refunds and can result in penalties.
The parent who claims the child gets the tax benefit — usually a larger standard deduction and access to child-related credits like the Child Tax Credit. The other parent loses that benefit for that year. This rule applies whether parents are married, divorced, separated, or never married.
The IRS uses the child's Social Security number to track who claims them. If two returns with the same child's number arrive, the agency processes whichever return was filed first and rejects or corrects the second one.
Key Takeaways
- Only one parent can claim a child as a dependent per tax year; filing jointly as a married couple is the only exception.
- The parent who claims the child receives the Child Tax Credit and a larger standard deduction; the other parent cannot claim these benefits.
- If both parents file separate returns and both claim the same child, the IRS will process the first return received and reject or correct the second.
- Unmarried parents must decide in advance who will claim the child, or the parent with the higher income usually claims them to maximize the tax benefit.
- A custody agreement or divorce decree may specify which parent claims the child, and the IRS can enforce that order.
Married couples filing jointly can both benefit from claiming one child
If you and your spouse file a joint tax return, you are filing as one unit. You claim your children together on that single return, and both of you benefit from the credits and deductions. This is the only scenario where "both parents" get the tax advantage — because you are filing as one taxpayer.
When you file jointly, you do not have to choose which parent claims the child. The return itself claims the child, and both spouses benefit equally from the Child Tax Credit and other child-related benefits.
Unmarried parents must decide who claims the child each year
If you and the other parent are not married or are filing separately, one of you must claim the child and the other must not. You can alternate years — one parent claims the child in 2024, the other in 2025 — but only one parent per year.
Many unmarried parents decide based on income. The parent with the higher income often claims the child because the tax benefit is worth more to them. However, there is no IRS rule requiring this. You and the other parent can agree to any arrangement that works for you.
If you cannot agree, the IRS has a tiebreaker rule: the parent with whom the child lived for the longer part of the year has the right to claim them. If the child lived with each parent equally, the parent with the higher income wins the tiebreaker.
Divorce decrees and custody agreements can specify who claims the child
A divorce decree or custody agreement often states which parent will claim the child on taxes. If your agreement says one parent claims the child, that parent should claim them, and the other parent should not — even if the IRS tiebreaker rule would favor the other parent.
The IRS can enforce a custody agreement. If a parent claims a child against the terms of a court order, the other parent can report it to the IRS, and the agency may disallow the claim and assess penalties.
If your custody agreement does not mention taxes, you and the other parent should put the arrangement in writing — even a text message or email counts — so there is no confusion later. This protects both of you if the IRS questions the return.
The Child Tax Credit and other benefits go to whoever claims the child
The parent who claims the child on their tax return receives the Child Tax Credit, which is worth up to $2,000 per child under age 17. This is a dollar-for-dollar reduction in taxes owed, not a deduction. The other parent cannot claim this credit in the same year.
The claiming parent also gets a larger standard deduction if the child is a dependent. For the 2024 tax year, a single parent with one dependent child has a standard deduction of $23,200, compared to $14,600 for a single person with no dependents. This means less of their income is subject to tax.
Other credits tied to the child — such as the Earned Income Tax Credit (EITC) if the parent qualifies — also go to the parent who claims the child. The non-claiming parent cannot access these benefits in that year.
What happens if both parents claim the same child
If you and the other parent both file returns claiming the same child, the IRS will catch it. The agency processes returns in the order they arrive. The first return to arrive is accepted, and the second return is either rejected or corrected to remove the child claim.
When the second return is rejected, the parent who filed it will not receive their refund until the issue is resolved. They will receive a notice from the IRS explaining that another return already claimed the child. At that point, they must either amend their return to remove the child or contact the IRS to dispute the claim.
If the IRS determines that both parents knowingly filed false returns, penalties can explore. These penalties are separate from the loss of the tax benefit and can add hundreds of dollars to what you owe.
How to file correctly when you are not the claiming parent
If the other parent is claiming the child, you must file your return without claiming them. On your federal tax return (Form 1040), you will not list the child as a dependent, and you will not claim any child-related credits.
You can still claim other deductions and credits you are may have access to to — such as the standard deduction, the Earned Income Tax Credit if you have no may have access to children, or education credits if you paid for college. You straightforward cannot claim the child.
Some parents worry that not claiming the child means they get no tax benefit at all. That is not true. You still file a return and receive any refund you are may have access to to based on your income and other circumstances. You straightforward do not receive the additional benefit that comes from claiming the child.
Frequently Asked Questions
Can we split the Child Tax Credit between two parents?
No. The Child Tax Credit is an all-or-nothing benefit. One parent claims the child and receives the full credit; the other parent cannot claim any portion of it. You cannot divide the credit or the deduction between parents.
What if the child lived with each parent equally during the year?
If the child lived with each parent for exactly half the year, the IRS tiebreaker rule says the parent with the higher income has the right to claim the child. However, if your custody agreement says otherwise, that agreement takes precedence.
Can I claim the child one year and the other parent claim them the next year?
Yes. You and the other parent can alternate who claims the child from year to year. You should put this arrangement in writing so both of you know whose turn it is. Make sure only one of you claims the child in any given year.
What if I paid for the child's expenses but the other parent claims them?
Paying for the child's expenses does not determine who can claim them on taxes. The IRS looks at who the child lived with and the custody agreement, not who paid for food or school supplies. The parent with custody rights or the one named in the agreement claims the child, regardless of who paid for what.
Do I need the other parent's permission to claim the child?
If you have the legal right to claim the child under a custody agreement or the IRS tiebreaker rule, you do not need permission. However, if you and the other parent have an informal agreement about who claims the child, it is wise to confirm it before filing to avoid both of you claiming the same child.