Whether you have to give the non-custodial parent your child’s Social Security number depends on your custody order and the reason they’re asking. There is no single federal law forcing a custodial parent to hand it over, but a court order, a parenting plan, or a legal duty the other parent has to fulfill can require it.
When Sharing Is Actually Required
Access to a child’s records is handled at the state level through family court. In many states, both parents can see their child’s records unless a judge has limited that right. If your custody agreement is silent on the SSN, neither of you can point to it as settling the question, and either parent can ask the court for a specific ruling.
A judge is more likely to order disclosure when the non-custodial parent needs the number to meet a legal obligation. The two most common examples are providing health insurance for the child and completing required legal filings. When parents can’t agree, a court can compel disclosure and attach conditions limiting how the number is used.
Taxes Are the Most Common Reason It Comes Up
Federal tax law generally requires an identifying number on a return, and for a child that number is the Social Security number.1Office of the Law Revision Counsel. 26 U.S.C. § 6109 To claim the Child Tax Credit or the Additional Child Tax Credit, the child must have a valid SSN issued by the return’s due date.2IRS. Instructions for Form 1040 – Section: SSN Required by Due Date of Your Return To Claim the CTC and ACTC
The IRS treats the parent the child lived with for the greater number of nights during the year as the custodial parent, and that parent generally has the first right to claim the child as a dependent.3IRS. Qualifying Child Rules A non-custodial parent can claim the child for certain tax benefits only if they meet specific IRS requirements.4IRS. Dependents In that situation, the custodial parent usually has to sign Form 8332 releasing the claim, and the non-custodial parent needs the child’s SSN to file at all.
If your court order or divorce judgment gives the other parent the right to claim the child in certain years, refusing to share the SSN can put you in violation of that order even when the request feels intrusive.
If You Don’t Want to Share the Number
If there is no court order requiring you to turn over the SSN and no legal duty the other parent is trying to meet, you generally don’t have to hand it over on request. If you believe sharing the number would put your child at risk, you can ask the court to rule on the question and, if disclosure is ordered, to add safeguards limiting how the number can be used.
Judges weigh why the information is needed against any risk to the child’s privacy before deciding.
If You Suspect Misuse
Using a child’s Social Security number to file false information on a tax return is a felony under federal law, punishable by up to three years in prison and fines of up to $100,000.5Office of the Law Revision Counsel. 26 U.S.C. § 7206 Misuse also has consequences in family court: if a judge finds a parent has used the child’s SSN to open unauthorized accounts or commit identity theft, the court may restrict that parent’s access to the child’s personal records going forward.
If you’re worried about identity theft, monitor your child’s credit, document your concerns, and report suspicious activity to the Federal Trade Commission. If the risk is serious, ask the court to limit how the other parent may use the number before you share it.