Yes, you need your baby’s Social Security number to claim the credits that make having a child matter at tax time. The Child Tax Credit alone is worth up to $2,200 per qualifying child for the 2026 tax year, and the law requires you to put a valid SSN on the return to get it.1Office of the Law Revision Counsel. 26 USC 24 – Child Tax Credit Most parents apply at the hospital right after birth and receive the card in a few weeks.
What the SSN Unlocks
The Child Tax Credit is the big one. For 2026 it reduces your tax bill by up to $2,200 for each qualifying child under 17, and the statute specifically requires a Social Security number valid for employment in the United States, entered on the return, for both you and the child.2Internal Revenue Service. Child Tax Credit No SSN, no credit. The credit phases out once modified adjusted gross income passes $200,000, or $400,000 for joint filers.1Office of the Law Revision Counsel. 26 USC 24 – Child Tax Credit
If your tax bill is too small to absorb the full credit, up to $1,700 per child can still come back as a refund through the Additional Child Tax Credit.3Internal Revenue Service. Refundable Tax Credits Same SSN requirement.
The Earned Income Tax Credit is the other refundable credit that turns on your child’s SSN. It’s built for low-to-moderate-income workers, and adding a qualifying child changes the numbers substantially: with one child the credit can exceed $4,000, and with three or more it can top $8,000. The child must have a valid SSN issued by the return’s due date.4Internal Revenue Service. Dependents 9
The Child and Dependent Care Credit, which covers daycare or a babysitter so you can work, also depends on reporting the child’s SSN. Form 2441 asks for the qualifying person’s number, and if the name and number don’t match Social Security Administration records, the IRS may reduce or deny the credit.5Internal Revenue Service. Instructions for Form 2441 – Child and Dependent Care Expenses
The gap between having an SSN and not having one is real money. A dependent claimed with a taxpayer identification number that isn’t an SSN falls back to the Credit for Other Dependents, a non-refundable $500.6Internal Revenue Service. Parents Check Eligibility for the Credit for Other Dependents That’s $500 versus $2,200, before you count anything else.
Getting the Number at the Hospital
The easiest route is Enumeration at Birth. Nearly every hospital and birthing center participates. When you fill out the birth registration paperwork, staff will ask whether you want to apply for a Social Security number. Say yes. The state vital statistics office then sends the birth data electronically to the SSA, which assigns a number and mails the card. Nationally, this takes about two weeks from birth registration, plus up to two more weeks for the card to reach you.7Social Security Administration. What Is Enumeration at Birth and How Does It Work
If You Missed the Hospital Option
Home birth, or a hospital that didn’t offer it, or a “no” you now regret: you’ll file Form SS-5, the Application for a Social Security Card, at a local Social Security office in person or by mail.8Social Security Administration. Application for a Social Security Card After approval, the card arrives in 5 to 10 business days.9Social Security Administration. Request a Social Security Number for the First Time
The SSA needs original documents (or copies certified by the issuing agency) proving three things about the child: age, identity, and U.S. citizenship. The U.S. birth certificate usually covers age and citizenship together. Identity is harder for a newborn because the SSA specifically will not accept the birth certificate for that. For young children the agency accepts medical records kept by a doctor, clinic, or hospital. A U.S. passport works too, though few newborns have one.8Social Security Administration. Application for a Social Security Card
You also prove your own identity with a U.S. driver’s license, state ID, or U.S. passport. Your name on the child’s birth certificate establishes the relationship. Originals mailed in are returned after processing.8Social Security Administration. Application for a Social Security Card
A Baby Born Late in the Year Still Counts
A child born on December 31 is your dependent for the entire tax year. If the child was born alive during the year and meets the dependency tests, you claim the full credit for that year.10Internal Revenue Service. Frequently Asked Questions on Dependents That’s a nice result, and it catches new parents off guard when a late-December baby means racing to get an SSN before filing season opens.
Filing Before the Card Arrives
Say the card just isn’t here yet. You have two workable paths.
The better one: file Form 4868 for an automatic extension, which pushes your filing deadline to October 15. That buys months for the SSN to show up, and you file one complete return with the credits included.
The other path: file on time without claiming the baby, then file an amended return on Form 1040-X once the SSN arrives. You generally have three years from the date you filed the original return, or two years from when you paid the tax, whichever is later.4Internal Revenue Service. Dependents 9 You’ll get the refund, just later.
Once you do have the number, enter it in the Dependents section of Form 1040 with the child’s name, relationship, and months lived with you. The Child Tax Credit and Additional Child Tax Credit are then figured on Schedule 8812 and flow back to the 1040.11Internal Revenue Service. Instructions for Schedule 8812 Make sure the name and SSN on the return match SSA records exactly, including hyphens; mismatches are a common reason returns get rejected.12Internal Revenue Service. Age, Name or SSN Rejects, Errors, Correction Procedures
When an SSN Isn’t Available
Some children can’t get a Social Security number, mainly dependents who aren’t U.S. citizens or residents. For those children the alternative is an Individual Taxpayer Identification Number, applied for on Form W-7.13Internal Revenue Service. About Form W-7 A dependent with an ITIN cannot be claimed for the Child Tax Credit or the Additional Child Tax Credit, only the $500 Credit for Other Dependents, and the ITIN has to be issued on or before the due date of the return (including extensions) for even that credit to apply.11Internal Revenue Service. Instructions for Schedule 8812
If you’re adopting a child domestically and can’t get the existing SSN or a new one issued because the adoption isn’t final, the IRS issues a temporary Adoption Taxpayer Identification Number. You apply on Form W-7A, and it typically takes four to eight weeks.14Internal Revenue Service. Adoption Taxpayer Identification Number The ATIN lets you claim the child as a dependent and claim the Child and Dependent Care Credit during the pending adoption. It’s valid for two years; after the adoption is final, apply for a regular SSN using Form SS-5 and use that going forward.