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Preparing for Court

What Happens If Someone Lies in a Child Custody Hearing?

What happens when a parent lies in a custody case: perjury penalties by state, false-abuse sanctions, contempt, and how judges test credibility.

Best for the Children Editorial·9 min read·August 21, 2025·Updated October 18, 2026

You're reading the other parent's sworn declaration, and there it is: a claim you know is false. Maybe it says you drink around the kids, or that you missed visits you never missed. So what happens to a parent who lies in a custody case? In theory, they can be charged with perjury, a crime that can carry prison time. In practice, the consequences you are most likely to see come from the family judge. The court can impose sanctions and fees, and it can rethink who the children should live with.

Not every lie is perjury

People often say "lying in court is a felony." That is not quite right. Perjury has specific elements, and a statement has to meet all of them.

California's definition, in Penal Code § 118, is typical. A person commits perjury when they willfully state as true something they know is false while under oath or under penalty of perjury. That covers live testimony, and it also covers depositions, affidavits, and declarations. This matters in custody cases, because much of the evidence comes in as written declarations signed under penalty of perjury.

The false statement must also be material. It has to have a natural tendency to influence the course or outcome of the proceeding. A parent who misstates what they ate for breakfast has not committed perjury. A parent who falsely swears the other parent left a toddler alone overnight may well have.

An honest mistake is not perjury either, because the statute requires that the person knew the statement was false.

What the criminal penalties look like, state by state

Custody cases are heard in state courts, so state perjury law usually governs. The penalties vary widely:

  • California: Under Penal Code § 126, perjury is a felony punishable by two, three, or four years of imprisonment under Penal Code § 1170(h). Section 118 defines the crime, and § 126 sets the sentence.
  • Texas: Ordinary perjury under Penal Code § 37.02 is a Class A misdemeanor. It becomes aggravated perjury, a third-degree felony under § 37.03, when the false statement is material and made in connection with an official proceeding. A court hearing is an official proceeding.
  • Florida: Under Statutes § 837.02, a false statement under oath about a material matter in an official proceeding is a third-degree felony. It is a second-degree felony in capital felony proceedings.
  • New York: Swearing falsely is Perjury in the Third Degree, a Class A misdemeanor, under Penal Law § 210.05. Swearing falsely in material testimony rises to Perjury in the First Degree, a Class D felony, under § 210.15.

Federal law has its own perjury statutes. Under 18 U.S.C. § 1621, perjury is a felony punishable by fines and up to five years in federal prison. A separate statute, 18 U.S.C. § 1623, covers false declarations in proceedings before or ancillary to federal courts and grand juries. Most custody disputes never touch federal court, so these rarely apply.

The pattern is the same everywhere. The more a lie matters to the case, the more serious the crime. Still, whether a lie from a custody hearing ever reaches a prosecutor is a separate question from whether it is technically a crime. The consequences a lying parent can most reliably expect come from the family court itself.

The consequences inside the custody case

Sanctions for false abuse accusations

The most damaging lies in custody cases are usually false accusations of child abuse or neglect. Several states have laws aimed directly at them.

In California, Family Code § 3027.1 lets the court order reasonable monetary sanctions and attorney's fees against anyone who makes an accusation of child abuse or neglect during a custody proceeding knowing it is false. "Anyone" is meant literally: the sanctions can apply to a party, a witness, or an attorney.

California goes further for false reports of sexual abuse. Under Family Code § 3027.5, the court may restrict a parent's custody or visitation, or order supervised visitation, if it finds the parent knowingly made a false report of sexual abuse to interfere with the other parent's custodial rights. The parent who tried to cut the other parent out can end up with less time with the child.

In Texas, Family Code § 153.013 treats a report of child abuse made during a custody suit as knowingly false if the person knew it lacked factual foundation. The court can impose a civil penalty of up to $500. The finding is also admissible on conservatorship, which is the Texas term for custody. Separately, under Family Code § 261.107, knowingly making a false report is a state jail felony.

These laws are not limited to a few states. According to the U.S. Child Welfare Information Gateway, states across the country penalize knowingly or intentionally false reports of child abuse. These are commonly misdemeanors, and some are felonies for certain offenses. The same laws protect reports made in good faith. A parent who reports a real concern that turns out to be unfounded is not the target.

Contempt of court

Judges have another tool for misconduct in their courtrooms: contempt. In California, Code of Civil Procedure § 1218 allows a person found in contempt to be fined up to $1,000 and jailed for up to five days per act. The court can also order that person to pay the other side's reasonable attorney's fees and costs. Contempt is most often used when someone defies a court order. If dishonesty comes alongside that kind of defiance, contempt becomes a real possibility.

Losing the judge's trust

The quietest consequence is often the most damaging. Every custody decision turns on the child's best interest. Texas Family Code § 153.002 says this "shall always be the primary consideration." California Family Code § 3011 directs judges to weigh the child's health, safety, and welfare. It also directs them to consider any corroborated history of abuse and habitual substance or alcohol abuse.

That word "corroborated" is where many lies fall apart. A judge who finds that a parent invented a story has learned two things. The accusation is worthless, and the parent who made it was willing to put winning ahead of the child. A judge applying a best-interest standard can take that into account.

How lies get tested

Judges do not decide credibility only by watching faces on the witness stand. In contested cases, they can bring in people whose job is to find out what is actually happening.

  • Child custody evaluators. Under California Family Code § 3111, the court may appoint a qualified evaluator in contested custody and visitation cases. The evaluator investigates and submits recommendations based on the child's best interest.
  • Minor's counsel. Under Family Code § 3150 and California Rule of Court 5.240, the court may appoint an independent lawyer to represent the child. That lawyer can also investigate in contested cases.
  • Guardians ad litem. These are often confused with the first two roles. In California, a guardian ad litem is appointed to make litigation decisions for a minor or incompetent person who is an actual party to the case, such as a parent who is under 18. A guardian ad litem is not a general investigator of who is telling the truth.

When an evaluator or the child's attorney is involved, claims get checked against school records, medical records, interviews, and the children's own accounts. A false story has to hold up against all of them.

If you believe the other parent is lying

Your instinct may be to fire back with your own exaggerations. Don't. The same laws that can punish the other parent apply to you, and your credibility is the most valuable thing you bring into the courtroom. A better approach:

  1. Answer with documents, not adjectives. Visitation logs, text messages, school attendance records, and medical records carry more weight than calling the other parent a liar.
  2. Tell your attorney exactly which statements are false and how you can prove it. The legal test is materiality, so focus on the lies that could affect the outcome.
  3. Ask whether an evaluator or minor's counsel makes sense. If the case comes down to one parent's word against the other's, a neutral investigator can break the tie.
  4. Ask about the specific remedies in your state. In California, that may include sanctions under Family Code § 3027.1 for a knowingly false abuse accusation. In Texas, it may include the civil penalty under Family Code § 153.013.
  5. Keep reporting real safety concerns. Good-faith reports are protected. The laws described here target knowing falsehoods, not parents who raise honest worries.

The bottom line

A lie in a custody case can be a crime. It ranges from a misdemeanor to a felony carrying years of imprisonment, depending on the state and on how much the lie mattered. But the consequences a lying parent is most likely to face come from the family court. Those include sanctions, attorney's fees, contempt, restricted or supervised visitation, and a judge who no longer believes them. In a process built around the child's best interest, being caught in a lie can cost a parent their credibility, and with it their case.

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