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

Form 8332 is the IRS form a custodial parent uses to release their claim to a child as a dependent so the noncustodial parent can claim the Child Tax Credit and related credits instead.¹ It applies only 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 signing it (or failing to) has real money attached.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 that labels one parent “custodial” does not change the answer. If the child slept at your home 183 nights and at the other parent’s 182, you are the custodial parent for tax purposes.³

When nights are split exactly evenly, the parent with the higher adjusted gross income wins the tiebreaker. Nights the child is temporarily away (camp, a friend’s, a hospital) count as nights with the parent the child would otherwise have been with.

Only the custodial parent can sign Form 8332. Everything else in this article assumes that threshold question is settled.

What Signing the Form Actually Transfers

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

What the Noncustodial Parent Gains

With a signed release, the noncustodial parent can claim, for the released child:

The Child Tax Credit, worth $2,200 per qualifying child as of 2025, adjusted for inflation starting in 2026. The credit phases out once income exceeds $200,000 ($400,000 for joint filers).⁴
The Additional Child Tax Credit, the refundable portion, which pays out even when no federal income tax is owed.
The Credit for Other Dependents, a $500 nonrefundable credit that applies when the child doesn’t qualify for the full CTC (typically because of age).

What the Custodial Parent Keeps

Even after signing, the custodial parent retains several benefits that the release does not touch:²

Head of Household filing status, which gives wider tax 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 requirements are met.⁶
The Child and Dependent Care Credit, if you pay for daycare or after-school care so you can work.

The noncustodial parent cannot claim any of these, even with a signed Form 8332. The EITC alone can be worth over $7,000 for families with several children, so a custodial parent who signs a release is not giving away the whole return.

The Three Parts of the Form

Form 8332 has three parts, and you fill in 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 previous release.

Filling Out and Filing a Release

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 in the space provided; a release for “all future years” stays in effect until it’s formally revoked.

Sign, date, and hand the form to the noncustodial parent. From that point, the noncustodial parent is responsible for attaching a copy to their federal tax return every single year they claim the child, even if the release covers multiple years.⁷ Skipping the attachment gives the IRS grounds to disallow the claim.

When e-filing, tax software will usually prompt for the information and transmit a digital version with the return. Keep the original signed paper copy. If the claim is ever questioned, the paper original with the custodial parent’s signature is what settles it.

Revoking a Release

To take back a release you signed for future years, complete Part III with the child’s name, your Social Security number, and the tax years you’re revoking.

Timing matters. A revocation takes effect no earlier than the tax year after you notify the other parent. If you complete the revocation and deliver a copy in 2026, the earliest year it can apply to is 2027. You cannot revoke retroactively for the current year, and a revocation cannot undo a release for a year that has already been filed.

Send the notice by certified mail so you have proof of the date the other parent received it, then attach the completed Part III to your own return for the first year you reclaim the child.

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 the end of the tax year, 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. If any of those tests fail, the CTC claim fails regardless of the form.

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

A Divorce Decree Cannot Replace Form 8332

This catches people out constantly. If your divorce or separation agreement was finalized after 2008, it doesn’t matter what the decree says about who claims the child. The IRS will not accept pages from a post-2008 decree as a substitute.¹ The noncustodial parent needs either the actual form or a written statement containing the same information: the child’s name, the years released, and the custodial parent’s signature.²

Only agreements executed before 1985 and never modified since can substitute, and those are vanishingly rare now. A decree may legally require the custodial parent to sign, but the decree by itself will not satisfy the IRS. If the custodial parent refuses to sign in violation of a court order, the noncustodial parent’s remedy is in family court, typically through a contempt motion, not through the IRS.

What Happens If Both Parents Claim the Child

If two returns claim the same child’s Social Security number, the IRS catches it. The second e-filed return using that SSN is automatically rejected.⁸ If the second parent files on paper instead, both returns get flagged and the IRS asks both taxpayers for documentation.

The parent who can produce a properly signed Form 8332, or who satisfies the custody-night test, wins. The losing parent owes back the credits, plus interest, and potentially 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 alone adds $440. The penalty can be waived for reasonable cause, but “my divorce lawyer told me I could claim the child” generally does not meet that standard when no Form 8332 exists.

The practical takeaway: treat Form 8332 less as paperwork about a $0 exemption and more as the switch that decides whose return gets several thousand dollars in credits. Sign it, keep the original, and attach a copy every year it applies.

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