What Is Form 8332 and How Does It Affect Your Taxes?

Form 8332 is the IRS form a custodial parent uses to release the right to claim a child as a dependent so the noncustodial parent can claim the Child Tax Credit and related credits instead.¹ It only applies to parents who are divorced, legally separated, or have lived apart for the last six months of the year. The dependency exemption itself is currently worth $0, but the release still controls which parent can claim thousands of dollars in child-related credits, so getting the form right matters.²

Who the IRS Treats as the Custodial Parent

For federal tax purposes, the custodial parent is the one the child lived with for the greater number of nights during the year. That is the only test. A divorce decree calling one parent “custodial” has no bearing on the IRS definition. If your child slept at your home 183 nights and at the other parent’s home 182, you are the custodial parent.³

When nights split exactly evenly, the tiebreaker goes to the parent with the higher adjusted gross income. Nights the child is temporarily away, at camp or a friend’s house or a hospital, count toward the parent the child would otherwise have been with. If a parent works nights and the child sleeps at that parent’s home, the IRS counts those nights with the working parent even though they weren’t physically there.

What the Release Transfers and What It Doesn’t

This is where most people go wrong. Signing Form 8332 moves specific credits to the noncustodial parent and leaves others behind with the custodial parent. It does not hand over every child-related tax benefit.

What the Noncustodial Parent Gains

Once the release is in place, the noncustodial parent can claim, for the released child:

The Child Tax Credit, worth $2,200 per qualifying child as of 2025, with inflation adjustment starting in 2026. The credit phases out above $200,000 in income for single filers and $400,000 for joint filers.⁴
The Additional Child Tax Credit, the refundable portion, available even when the taxpayer owes no federal income tax.
The Credit for Other Dependents, a $500 nonrefundable credit for a child who doesn’t qualify for the full CTC (usually because of age).⁴

What Stays with the Custodial Parent

Several valuable benefits do not move, and the noncustodial parent cannot claim them even with a signed release:²

Head of Household filing status, with wider brackets and a $24,150 standard deduction for 2026.⁵
The Earned Income Tax Credit, using the child as a qualifying child, if the residency and income rules are met.⁶
The Child and Dependent Care Credit for daycare or after-school care that lets the custodial parent work.

The EITC alone can be worth over $7,000 for families with multiple children, so signing a release is not the same as giving up every child-related benefit.

The Three Parts of Form 8332

The form has three parts, and you fill out only the one that fits your situation:¹

Part I releases the claim for the current tax year only.
Part II releases the claim for one or more specified future years, or for all future years.
Part III revokes a release you previously signed.

The custodial parent enters the child’s name and the custodial parent’s own Social Security number. The form does not ask for the child’s SSN. For Part II, list each future year, or write that the release covers all future years, in which case it stays in effect until formally revoked. Sign and date, then give the completed form to the noncustodial parent.

Attaching the Form to the Noncustodial Parent’s Return

The noncustodial parent has to attach a copy of the signed form to their federal tax return every year they claim the child, even when the release covers multiple future years.⁷ Forget the attachment and the IRS has grounds to disallow the claim.

When e-filing, tax software will prompt for the form’s information and transmit a digital version with the return. Keep the original signed paper copy in your records. If the IRS questions the claim later, the paper original with the custodial parent’s signature is what settles it.

The Noncustodial Parent Still Has to Qualify

Form 8332 only removes the residency obstacle. The noncustodial parent still has to independently meet every other Child Tax Credit requirement: the child must be under 17 at year end, must be the taxpayer’s son, daughter, stepchild, or eligible foster child, must be a U.S. citizen or resident, and must not have provided more than half of their own support. Miss any of those and the CTC claim fails no matter what the form says.

The income phase-out applies to the noncustodial parent’s own return. Above $200,000 (single) or $400,000 (joint), the credit drops by $50 for every $1,000 of additional income.⁴

Taking Back a Release

If you previously signed a release for future years and want to take it back, use Part III. Enter the child’s name, your Social Security number, and the tax years you’re revoking.¹

Timing is critical. A revocation takes effect no earlier than the tax year after you notify the noncustodial parent. Deliver a copy in 2026, and the earliest year it applies is 2027. You cannot revoke retroactively for the current year or any year already filed.

Send the notice by certified mail so you have proof of the delivery date. Then attach the completed Part III to your own tax return for the first year you reclaim the child.

Why Your Divorce Decree Isn’t Enough

This surprises people. If your divorce or separation agreement was finalized after 2008, the IRS will not accept pages from the decree as a substitute for Form 8332.¹ The noncustodial parent needs either the actual form or a written statement carrying the same information: the child’s name, the years released, and the custodial parent’s signature.²

A decree may legally obligate the custodial parent to sign the form, but the decree alone will not satisfy the IRS. If the custodial parent refuses to sign despite a court order requiring it, the noncustodial parent’s remedy is in family court, typically through a contempt motion, not with the IRS.

What Happens If Both Parents Claim the Child

The IRS catches duplicate claims. The second return e-filed with the same child’s SSN is rejected automatically.⁸ File on paper instead and both returns get flagged, with the IRS contacting each parent for documentation.

The parent who can produce a properly signed Form 8332, or who wins the custody-nights test as the custodial parent, prevails. The losing parent owes back the credits claimed, plus interest, and possibly a 20% accuracy-related penalty on the underpaid tax if the IRS finds the claim negligent.⁹ On a $2,200 CTC claim, that penalty adds $440. The penalty can be waived for reasonable cause, but relying on what a divorce lawyer said, absent an actual signed form, generally doesn’t meet that standard.

1
Internal Revenue Service. Form 8332 – Release/Revocation of Release of Claim to Exemption for Child by Custodial Parent
2
Internal Revenue Service. Publication 504, Divorced or Separated Individuals
3
Internal Revenue Service. Claiming a Child as a Dependent When Parents Are Divorced, Separated or Live Apart
4
Internal Revenue Service. Child Tax Credit
5
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
6
Internal Revenue Service. Earned Income Tax Credit
7
Internal Revenue Service. Child Tax Credit
8
Internal Revenue Service. Age, Name, SSN Rejects, Errors, Correction Procedures
9
Internal Revenue Service. Accuracy-Related Penalty