Can I sue my ex for claiming child on taxes?

Asked by: Franco McClure  |  Last update: September 4, 2026
Score: 4.2/5 (19 votes)

Yes, you can take legal action against an ex for improperly claiming a child on taxes, especially if a court order dictates who has the right, by filing a motion to enforce the existing order or for contempt, but you'll also need to resolve it with the IRS by filing your own return (possibly by mail) and proving your eligibility, as the IRS follows federal law for dependency rules, though state courts can enforce their decrees.

What can you do if your ex claimed your child on taxes?

If a non-custodial parent claims your child on their taxes, first check your divorce decree, then file your return (paper-file if rejected), and if the issue persists, the IRS will likely audit both of you, requiring you to provide proof (like school/medical records) that the child lived with you more than half the year to resolve it. The custodial parent generally has priority, but the non-custodial parent needs a signed Form 8332 (Release/Revocation of Release) from the custodial parent to claim the child, otherwise, the IRS applies tie-breaker rules. 

What to do if someone filed my child on their taxes?

If someone claims your child on taxes, first paper file your return (as e-filing gets rejected) and the IRS will investigate, sending letters to both parties to determine who's eligible, which can take time and delay refunds. If it's identity theft, report it to IdentityTheft.gov and IRS.gov and file Form 14039, Identity Theft Affidavit; for fraud by a known person (like an ex), you might use Form 3949-A.

Can a father claim a child on taxes without custody?

Yes, a father can claim a child without primary physical custody if the custodial parent signs IRS Form 8332 (or a similar statement) to release their claim to the dependency exemption, allowing the noncustodial father to claim the child as a dependent for credits like the Child Tax Credit, but the custodial parent usually keeps Head of Household status and the Earned Income Credit (EITC) unless other rules apply. The key is the formal release from the parent the child lived with more than half the year (the custodial parent). 

Is it better for the mother or father to claim a child on taxes?

The parent with whom the child lives the most nights (the custodial parent) usually claims the child, but the noncustodial parent can claim the child if the custodial parent signs and provides IRS Form 8332, releasing the claim, or if the divorce decree/custody order grants it to them. If the child lived with both parents equally, the parent with the higher Adjusted Gross Income (AGI) is the custodial parent for tax purposes, and they generally claim the child unless they sign Form 8332 to release the claim. 

My Ex Claimed the Kids on Their Taxes - What Can I do??

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Does the IRS know who the custodial parent is?

Yes, the IRS knows who the custodial parent is based on who the child lived with for more than half the year (more nights), but parents "self-certify" this when they file, with the custodial parent usually claiming the child unless a Form 8332 is signed to release the claim to the noncustodial parent, who then attaches it to their return. If a dispute arises or both claim the child, the IRS uses tie-breaker rules (higher AGI for equal time) and can request documentation like school records or medical bills to determine the rightful claimant. 

Can you sue someone for filing your child on their taxes?

If you do know that the parents don't meet the necessary requirements, then you may be able to report suspected tax fraud to the I.R.S., but you're not going to be able to personally sue them in a court of law, as you have no right to claim the children yourself, and thus are not incurring any sort of personal damages ...

Can you get in trouble for claiming a child on taxes?

Claiming false deductions like dependents is considered tax evasion and is, therefore, a felony with potentially severe criminal penalties. However, the IRS will only consider alleging a malicious dependent fraud if the taxpayer demonstrated willfulness—meaning that you have to be aware of your crime to be charged.

What are common dependent claim mistakes?

Claiming a child who does not meet the qualifying child requirements. Filing with an incorrect filing status. Overreporting or underreporting income and expenses. Having more than one person claiming the same child.

Is it illegal to claim a child that doesn't live with you?

To claim a child as a dependent, that child had to live with you for over half the year. If the child did not live with you at all during the year, it is typically the case that the custodial parent is entitled to claim that child as a dependent instead.

What happens if the noncustodial parent claims a child on taxes without permission?

If the non-custodial parent claimed the child without your permission, they may be in violation of the form's terms and may face penalties. Additionally, if they have previously been denied the ability to claim the child in the past, claiming the child again without permission could be considered fraud.

What happens when one parent claims a child on taxes?

If only one of the persons is the child's parent, the child is treated as the qualifying child of the parent. If the parents file a joint return together and can claim the child as a qualifying child, the child is treated as the qualifying child of the parents.

Who claims a child on taxes with 60/40 custody?

Who claims the child on taxes with 60/40 custody? In a 60/40 custody arrangement, the IRS typically considers the parent with 60% physical custody (the one with whom the child spends 219 or more nights per year) to be the custodial parent with the right to claim tax benefits.

What to do when your ex claimed your child on taxes?

If a non-custodial parent claims your child on their taxes, first check your divorce decree, then file your return (paper-file if rejected), and if the issue persists, the IRS will likely audit both of you, requiring you to provide proof (like school/medical records) that the child lived with you more than half the year to resolve it. The custodial parent generally has priority, but the non-custodial parent needs a signed Form 8332 (Release/Revocation of Release) from the custodial parent to claim the child, otherwise, the IRS applies tie-breaker rules. 

Who has the legal right to claim a child on taxes?

You can claim a child as a dependent if he or she is your qualifying child. Generally, the child is the qualifying child of the custodial parent. The custodial parent is the parent with whom the child lived for the longer period of time during the year.

How to prove custodial parent IRS?

If the child is yours, proving the relationship is usually as simple as providing the child's birth certificate. If it is a grandchild, sibling, niece, or nephew, you may also have to show the birth certificate of the child's parent and your birth certificate to prove the relationship.

What are the three requirements for the IRS to consider someone a dependant?

Make sure your dependent meets the IRS requirements. Generally, the IRS requires that the child is under the age of 19 (or under 24 if a full-time student), lives with you for more than half the year, and does not provide more than half of their own financial support.

What is proof of child dependency?

The dependent's birth certificate, and if needed, the birth and marriage certificates of any individuals, including yourself, that prove the dependent is related to you. For an adopted dependent, send an adoption decree or proof the child was lawfully placed with you or someone related to you for legal adoption.

What is the biggest mistake in custody battle?

The biggest mistake in a custody battle is prioritizing adult emotions (anger, revenge) over the child's best interests, often leading parents to badmouth the other parent, use children as pawns, or fail to co-parent, all of which courts view negatively and can harm the child's well-being and the parent's case. Courts focus on stability, safety, and a parent's ability to support the child's relationship with the other parent, so focusing on conflict or failing to cooperate signals poor parenting, say Inman & Tourgee Attorneys At Law, AMS Mediation, and Johnson Law Firm, P.C..

Who gets the child tax credit in a 50/50 custody?

In a 50/50 custody situation, the parent with the higher Adjusted Gross Income (AGI) generally claims the Child Tax Credit (CTC) if the child lives with each parent for an equal number of nights, according to IRS tie-breaker rules. However, the custodial parent (who has the child more nights, even just one more) usually claims the credit and other benefits like Head of Household status, but can release the right to claim the child to the noncustodial parent using IRS Form 8332. Parents can also agree to alternate years or claim different children, but the IRS favors the higher income parent in true 50/50 splits unless a Form 8332 is filed.
 

What happens if a custodial parent lies about income?

Contempt of court: When a parent lies, they can be held in contempt of court. Contempt means they have disobeyed court orders or failed to comply with the legal process, both of which can result in fines, penalties, and even jail time.