To prove that your child lives with you for taxes, you need records from unrelated third parties that show your child’s name at your address across more than half of the tax year. The IRS calls this the residency test, and it is the gateway to the Child Tax Credit, the Earned Income Tax Credit, Head of Household status, and other benefits tied to a qualifying child. One document showing a single date is not enough. The agency looks for a pattern of shared residency across the year in question, and it can ask for that proof at any time.
What the IRS Means by “Lived With You”
A qualifying child must have lived with you for more than half the tax year. The home does not have to be a house or an apartment. Any place where you and your child regularly live counts, including shelters or temporary housing.1Internal Revenue Service. Qualifying Child Rules
Temporary absences don’t break the streak. Your child is still treated as living with you during time away for school, vacation, medical care, military service, or detention in a juvenile facility, as long as your home remained the child’s primary residence during that absence.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information A college student living on campus during the semester and coming home for breaks still counts as living with you the whole time.
A child born or who died during the year gets special treatment. The child is considered to have lived with you for the full year as long as your home was the child’s home for more than half the time the child was alive. Time a newborn spends in the hospital right after birth counts as time living with you.2Internal Revenue Service. Publication 501 (2025), Dependents, Standard Deduction, and Filing Information
Documents That Prove Residency
When the IRS audits a dependent claim, it usually sends Form 886-H-DEP, which lists exactly what it will accept.3Internal Revenue Service. Form 886-H-DEP, Supporting Documents for Dependents A parallel form, Form 14815, covers Child Tax Credit claims.4Internal Revenue Service. Form 14815, Supporting Documents to Prove the Child Tax Credit (CTC) and Credit for Other Dependents (ODC) The records that work best carry your child’s name, your address, and dates that together cover more than six months of the tax year:
- School records such as report cards, enrollment records, attendance records, or transcripts showing your child’s name and your address. The IRS publishes a letter template that schools can complete on official letterhead confirming the enrollment period, the home address on file, and the parent or guardian of record.5Internal Revenue Service. School Template
- Medical records from a doctor, dentist, hospital, or health insurance provider listing your child’s name and your address. Vaccination records or a signed statement from a healthcare provider on official letterhead work too.
- Childcare records showing enrollment or attendance at a daycare or after-school program at your address.
- Records from a social service agency, child support enforcement office, court, or placement agency confirming that the child lived at your address.
- A lease or rental agreement listing both you and your child as residents.
- A letter on official letterhead from a school official, medical provider, social service agency, or place of worship stating that the child lived with you and specifying the dates.
One firm limit: the IRS will not accept documents signed by someone related to you.3Internal Revenue Service. Form 886-H-DEP, Supporting Documents for Dependents A letter from your sister, your parent, or another family member will be rejected. The writer needs to be an unrelated third party with direct knowledge of your household.
Divorced, Separated, or Living Apart
When parents live apart, the IRS decides who the custodial parent is by counting the nights the child spent with each parent during the year. The parent with more nights is the custodial parent. If the nights split evenly, the parent with the higher adjusted gross income is treated as custodial.6Internal Revenue Service. Claiming a Child as a Dependent When Parents Are Divorced, Separated or Live Apart
By default, only the custodial parent can claim the child. The custodial parent can release that right by signing Form 8332 (Release/Revocation of Release of Claim to Exemption for Child by Custodial Parent), and the noncustodial parent must attach a copy to the return for each year they claim the child.7Internal Revenue Service. Form 8332, Release/Revocation of Release of Claim to Exemption for Child by Custodial Parent
Form 8332 has narrow effect. It transfers only the Child Tax Credit, Additional Child Tax Credit, and Credit for Other Dependents. It does not transfer the Earned Income Tax Credit, Head of Household filing status, or the Child and Dependent Care Credit. Those benefits stay with the custodial parent no matter what any signed form says.8Internal Revenue Service. Dependents 3 A noncustodial parent who claims the EITC based on a Form 8332 will have that credit denied.
A divorce decree or custody agreement is not a substitute. Even when the decree says the noncustodial parent gets to claim the child, the IRS will not act on that language by itself. It requires either a signed Form 8332 or a written statement containing the same information: both parents’ names and Social Security numbers, the child’s name, the specific tax years covered, and the custodial parent’s signature and date.7Internal Revenue Service. Form 8332, Release/Revocation of Release of Claim to Exemption for Child by Custodial Parent
When Two People Claim the Same Child
If someone else has already e-filed a return claiming your child, your electronic return will be rejected. From there you can file a paper return and let the IRS work it out, or contact the other person and try to resolve who has the rightful claim. When more than one person could claim the same child, the IRS applies tie-breaker rules:1Internal Revenue Service. Qualifying Child Rules
- If only one claimant is the child’s parent, the parent wins.
- Between two parents, the child goes to the parent the child lived with longer. If the time was equal, the parent with the higher adjusted gross income wins.
- Between two non-parents, the person with the higher adjusted gross income wins.
- A non-parent can claim the child only if no parent actually claims the child and the non-parent’s AGI is higher than that of any parent who could have claimed.9IRS.gov. Tie-Breaker Rule
These rules are not optional. If both filers refuse to back down, the IRS will audit both returns and apply the tie-breaker itself. The losing party owes back the credits claimed, with interest.
Responding to a CP75 or CP75A Notice
If the IRS questions your dependent claim, you’ll receive a CP75 or CP75A notice by mail asking you to verify the credits, dependents, and filing status on your return.10Internal Revenue Service. Understanding Your CP75A Notice The notice sets a response deadline. Missing it doesn’t end the process, but it lets the IRS move forward with proposed changes and deny the credits you claimed. If you need more time to gather documents, call the number in the top right corner of the notice and request an extension before the deadline passes.11Internal Revenue Service. Topic No. 654, Understanding Your CP75 or CP75A Notice, Request for Supporting Documentation
You can respond by mail or use the IRS Document Upload Tool, which accepts scanned or photographed documents in JPG, PNG, or PDF format. The tool requires the access code from your notice, or the notice number if no code was provided, and sends confirmation once the IRS receives your files.12Internal Revenue Service. IRS Document Upload Tool That confirmation is a real advantage over mailing documents with no tracking.
Send clear copies or digital scans, never originals. Originals can be lost and are often not returned. If you mail your response, include a brief cover letter listing each document and keep copies of everything.
Every document you submit needs to match the tax year the IRS is auditing. A school record from 2024 will not help if the audit is about your 2025 return. Otherwise strong documentation can lose the case when it’s from the wrong year.
What Happens If You Get It Wrong
Claiming a child who didn’t meet the residency test carries real consequences. The size scales with how wrong the claim was:
- If the IRS disallows the claim and finds you were negligent or substantially understated your tax, an accuracy-related penalty of 20% of the underpayment applies.13Office of the Law Revision Counsel. 26 U.S. Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments
- If the IRS finds you claimed the Child Tax Credit, EITC, or other covered credits with reckless or intentional disregard for the rules, you’re banned from claiming those credits for two years after the final determination.14Internal Revenue Service. What to Do If We Deny Your Claim for a Credit
- If the claim was fraudulent, the ban extends to ten years.14Internal Revenue Service. What to Do If We Deny Your Claim for a Credit
A two-year ban on the EITC alone can cost a family thousands of dollars in refunds, even in later years when the claim would have been solid. The straightforward defense is to keep residency records as the year goes. A folder with school enrollment letters, medical visit summaries, and childcare attendance records is easy to maintain and hard to reconstruct after the fact.