How to properly use Form 8332 (Exemption of Child by Custodial Parent) when someone else claimed my dependent
I'm having a really weird situation with my taxes this year and could use some help! My ex-husband and I have an agreement to alternate claiming our son each year, and 2025 is my year to claim him. However, when I tried filing through H&R Block, it got rejected saying someone already claimed my son as a dependent. Here's where it gets strange - I contacted my ex and he swears he didn't claim our son on his return (he already filed and got his refund). He checked his paperwork and our son's SSN doesn't appear anywhere on his forms. I'm totally confused about: 1. Who the heck could have claimed my son if not my ex? 2. Should I ask my ex to complete Form 8332 now? Would this even help since he claims he didn't use our son's SSN on his return? 3. His accountant told him it's "too late" to fill out Form 8332 and that he should have done it before filing. Is that true? 4. My ex is worried that signing Form 8332 will cause problems with his head of household status and the IRS will come after him for additional taxes. Is this a legitimate concern? I've tried calling the IRS but their phones are completely jammed and I can't get through to anyone. I'm thinking of just mailing in my return with an explanation, but I'm worried that won't solve anything. Any advice would be incredibly helpful! This is so frustrating!
19 comments


Camila Jordan
This is definitely a confusing situation! Let me try to address your questions: First, regarding who claimed your son - it's possible there was an error somewhere. Sometimes identity theft can be involved, or simply someone transposing digits when entering a SSN. The IRS won't tell you who claimed your child, but they will investigate if you mail in your return claiming your son. About Form 8332 - this form is used when the custodial parent (the one the child lives with most) is releasing their right to claim the child to the non-custodial parent. If you're the custodial parent, you wouldn't need your ex to fill out this form. If he's the custodial parent and it's your year to claim, then yes, he should complete it. The timing issue - it's not technically "too late" for Form 8332. Your ex can still complete it and give it to you to attach to your paper return. The form relates to which parent has the right to claim the child, not when it's filled out. Regarding head of household status - this is a legitimate concern but also a misunderstanding. Your ex can still file as head of household if he has another qualifying person, or if your son lived with him more than half the year, even if he doesn't claim your son as a dependent. The Form 8332 only releases the dependency exemption, not the head of household qualification.
0 coins
Alexis Renard
•Thank you for the detailed explanation! This clarifies a lot. My son definitely lives with me more than half the year (about 70% of the time), so I'm the custodial parent. Does that mean I actually don't need Form 8332 at all since I have the default right to claim him? I thought since we have this alternating agreement that we needed paperwork every year. If there might be identity theft happening, should I be doing something else besides mailing in my return? I'm really worried now that someone has my son's SSN.
0 coins
Camila Jordan
•As the custodial parent, you actually have the default right to claim your child. If you have an agreement to alternate years, technically you should be the one filling out Form 8332 in the years when you're allowing your ex to claim your son - not the other way around. Since this is your year to claim him and you're the custodial parent, you don't need any special form. For the potential identity theft concern, I'd recommend filing an identity theft affidavit (Form 14039) for your son along with your paper return. Also, consider placing a credit freeze on your son's credit file with the three major bureaus as a precaution. The IRS will investigate when they receive your paper return claiming the same dependent that's already been claimed. They'll determine who has the legal right based on residence, relationship, and other factors.
0 coins
Tyler Lefleur
After dealing with a similar nightmare scenario last year, I finally discovered taxr.ai (https://taxr.ai) and honestly it was a game-changer for my situation. I was in a similar spot where my child was somehow claimed on someone else's return (turned out to be my ex's new partner trying to get a bigger refund without telling my ex). The tool analyzed my divorce decree, custody agreement, and tax documents, then generated a detailed report explaining exactly which forms I needed and who had the legal right to claim our daughter. They even provided a custom letter to send with my paper return explaining the situation to the IRS with all the relevant tax code citations. I was able to successfully claim my daughter despite the initial rejection, and the IRS actually processed my amended return faster than I expected. Might be worth checking out if you're still stuck after trying the other suggestions.
0 coins
Madeline Blaze
•Did it actually work though? I'm in a similar situation and worried the IRS will just automatically side with whoever filed first. How long did it take for your amended return to process?
0 coins
Max Knight
•I'm curious about this too. Did you need to provide a lot of documentation? My custody arrangement isn't formally documented (we have a verbal agreement) so I'm not sure this would work for me.
0 coins
Tyler Lefleur
•Yes, it absolutely worked! The IRS doesn't simply side with whoever filed first - they look at the actual facts of who has the legal right to claim the dependent. In my case, it took about 8 weeks for the amended return to be processed, which was faster than the 16+ weeks they were quoting at the time. For documentation, I uploaded what I had, which included my divorce decree and informal custody calendar. The system actually helped me document my verbal agreements by creating a sworn statement template. Even if you don't have formal court documents, they have options for demonstrating your custodial status through school records, medical records, or even text message exchanges showing the time your child spends with you. The key is having some evidence you can point to beyond just your word.
0 coins
Max Knight
I tried taxr.ai after seeing it mentioned here and it was exactly what I needed! I was skeptical at first since my situation seemed too complicated for an online tool, but it asked really specific questions about my custody situation and helped me figure out that as the custodial parent, I actually had the legal right to claim my daughter regardless of what my informal agreement said. The report showed that my ex shouldn't have been claiming head of household at all since our daughter didn't live with him more than half the year. It even generated a letter to the IRS explaining the tie-breaker rules that apply in my case. My paper return got processed in about 5 weeks, and I received my full refund with the child tax credit included. Totally worth it for the peace of mind alone, especially since I couldn't get through to anyone at the IRS.
0 coins
Emma Swift
Have you tried getting through to the IRS? I was in a similar situation last year and spent WEEKS trying to reach someone. The phone lines are absolutely insane this time of year. After getting disconnected like 15 times, I found this service called Claimyr (https://claimyr.com) that somehow got me connected to an actual IRS agent in about 20 minutes. They have a video showing how it works: https://youtu.be/_kiP6q8DX5c The IRS agent was able to tell me that my sister had accidentally claimed my son (she was helping with childcare and got confused when filing her own taxes), and they walked me through exactly what documentation I needed to mail in with my return to fix it. Saved me so much headache compared to mailing in my return and just hoping for the best.
0 coins
Isabella Tucker
•How does this actually work? I'm super confused because every time I call the IRS they just say all representatives are busy and hang up on me. Does this really get you through or is it just another scam?
0 coins
Jayden Hill
•Sounds sketchy. Why would some random service be able to get through when nobody else can? And do they charge for this? The IRS phone system is designed to limit calls, how could they possibly bypass that?
0 coins
Emma Swift
•It works by basically calling the IRS repeatedly with an automated system until it gets through, then it calls you and connects you directly to the agent. Think of it like having someone continuously redial for you until they get through, but it's all automated. The reason it succeeds where manual calling fails is because their system calls hundreds of times if necessary, which is something no human has the patience for. The IRS phone system isn't designed to block calls - it's just overwhelmed with volume. This service just handles the frustrating part of getting through the busy signals and holds.
0 coins
Jayden Hill
I hate to admit when I'm wrong but I need to update my skeptical comment. After struggling for another week trying to reach the IRS about my dependent issue, I broke down and tried Claimyr. Within 15 minutes I was talking to an actual IRS agent who confirmed someone had incorrectly entered my daughter's SSN on their return (turned out to be a simple transposition error from another taxpayer). The agent put notes in my file and told me exactly what documentation to include with my paper return. They even gave me a special fax number to send my documentation directly to the department handling my case. My return is now being processed, and I should have my refund in about 3 weeks. Definitely worth it just for the peace of mind of knowing exactly what was happening instead of guessing and waiting for months. The IRS agent was actually super helpful once I could actually speak to one!
0 coins
LordCommander
Few things to consider here that others haven't mentioned: 1. Is there any chance your ex might be confused about whether he claimed your son? Sometimes people don't realize that claiming Head of Household with a qualifying child IS actually claiming that child for certain tax benefits, even if they don't claim the Child Tax Credit. 2. If you're absolutely sure no one in your family claimed him, consider the possibility of an accidental SSN typo by some random taxpayer. This happens more often than you'd think - someone transposes two digits when entering their own child's SSN and accidentally enters your child's number instead. 3. Paper filing is your best option now. Include a letter explaining your situation, and attach any documentation showing that your child lives with you (school records, medical records, etc.). 4. Form 8332 is ONLY needed when the custodial parent (whoever the child lives with most of the time) is releasing their claim to the non-custodial parent. If you're the custodial parent and it's your year to claim, you don't need this form at all.
0 coins
Alexis Renard
•You know, I didn't consider that my ex might have claimed Head of Household using our son without realizing that counts as "claiming" him in a way. I'll definitely ask about that specifically. He may have been told by his tax preparer that he wasn't "claiming" our son for the Child Tax Credit, but still used him for HOH status. That's reassuring about the Form 8332 - it sounds like since I'm the custodial parent, I actually don't need him to sign anything this year. I'll collect some documentation showing my son lives with me primarily and include that with my paper return.
0 coins
LordCommander
•You're on the right track. A lot of people don't realize that Head of Household status is actually a form of "claiming" a dependent for tax purposes. The tax software sometimes doesn't make this clear, and tax preparers often focus on the Child Tax Credit when talking about "claiming" a child. One more tip - when you paper file, use certified mail with return receipt so you have proof of when you submitted it. Also make copies of absolutely everything before sending. The IRS will eventually sort this out, but it might take a while, so documentation is your best friend here.
0 coins
Lucy Lam
The IRS actually has a specific procedure for this situation! When two people claim the same dependent, they use "tie-breaker rules" to determine who gets to claim the child. As the custodial parent (child lives with you more), you almost always win these tie-breaker rules. Here's what you should do: 1. File a paper return claiming your son 2. Include a letter briefly explaining the situation (custody arrangement, that it's your year to claim) 3. Include evidence that your son lives with you (school records showing your address, medical records, etc.) 4. The IRS will investigate both returns and make a determination Don't worry about Form 8332 for now. That's only needed when you (as custodial parent) want to release your claim to your ex. Since this is your year to claim and you're the custodial parent, you have the strongest claim.
0 coins
Aidan Hudson
•This is all correct except for one important detail - the tie-breaker rules are ONLY used when both parents have an equal claim (like if the child lived exactly 50/50 with both parents). Since OP is the custodial parent (child lives with them more than half the year), they automatically have the right to claim the child unless they explicitly release that right via Form 8332. The IRS will side with the custodial parent 99% of the time in these disputes, assuming they can provide even basic documentation showing the child lived with them.
0 coins
Giovanni Greco
I went through almost the exact same situation two years ago! Here's what I learned that might help: The most likely scenario is that someone made an honest mistake with SSN digits - it happens way more than you'd think. My case turned out to be a grandparent who transposed two numbers when entering their grandchild's SSN and accidentally used my daughter's number instead. Since you're the custodial parent (your son lives with you 70% of the time), you have the automatic legal right to claim him regardless of any informal agreements. You don't need Form 8332 - that's only for when YOU want to release your claim to your ex in future years. Here's exactly what worked for me: 1. File your return on paper claiming your son 2. Include a brief letter explaining you're the custodial parent and it's your agreed-upon year to claim him 3. Attach documentation showing he lives with you primarily (school enrollment, medical records, etc.) 4. Send it certified mail with return receipt The IRS processed mine in about 10 weeks and I got my full refund including the Child Tax Credit. They also sent a notice to whoever incorrectly claimed my daughter, so the mistake got corrected on both ends. Don't stress too much about this - as the custodial parent, the law is heavily in your favor!
0 coins