Rescinding a Voluntary Acknowledgment of Paternity in Montana: Deadlines and Fraud

Current as of: October 13, 2026 Paternity & Fathers' Rights Montana
In Montana, you have a strict 60-day window to rescind a Voluntary Acknowledgment of Paternity without a court hearing. If more than 60 days have passed, you must go to court and prove fraud, duress, or a material mistake of fact to undo the paternity declaration.

The 60-Day Window to Rescind a VAP in Montana

Signing a Voluntary Acknowledgment of Paternity (VAP) is a serious legal action. When you sign it, you are legally declaring that you are the biological father of the child, accepting all financial and legal responsibilities that come with parenthood. However, situations arise where a man signs the VAP and shortly thereafter begins to doubt his biological connection to the child. Under Montana law, the state provides a brief grace period to undo this decision. You have a strict 60-day window from the date the VAP was filed to legally rescind (cancel) the acknowledgment without needing to provide a specific reason or go through a lengthy court trial.

How to File a Rescission Within 60 Days

If you are within the 60-day deadline, the process is administrative. You do not need a lawyer to argue in front of a judge. You must obtain and complete a specific form, typically Form Notice of Withdrawal of Paternity Acknowledgment, Montana, DPHHS, Notice of Withdrawal of Paternity Acknowledgment. This form must be signed, notarized, and filed with the Montana Department of Public Health and Human Services, Helena before the 60th day expires. Once the state receives and processes this form, the original VAP is voided, and your name is removed from the child's birth certificate. However, if any administrative or judicial proceeding related to the child (such as a child support hearing) happens before the 60 days are up, the deadline to rescind may expire on the date of that hearing.

Discovering Paternity Fraud After the 60-Day Deadline

If the 60-day window has closed, the Voluntary Acknowledgment of Paternity becomes a binding legal judgment of paternity under Mont. Code Ann. § 40-6-105. You cannot simply change your mind or mail in a rescission form. To remove your name from the birth certificate and terminate your child support obligations, you must file a formal lawsuit in a Montana District Court. This is a difficult legal hurdle because the law strongly favors keeping children with established fathers to ensure they have financial and emotional support.

Filing a Motion to Vacate Based on Fraud, Duress, or Mistake of Fact

To successfully challenge a VAP after 60 days, you must file a Motion to Vacate Paternity at a local court, such as the Gallatin County District Court, Bozeman or the Cascade County District Court, Great Falls. You bear the burden of proving one of three things: fraud (the mother intentionally lied to you about being the only possible father), duress (you were threatened or forced into signing the VAP), or a material mistake of fact (both of you genuinely believed you were the father, but a subsequent medical test proved otherwise). Precedents like In re Paternity of C.T.E.-H., 323 Mont. 498 (MT Supreme Court 2004) illustrate that Montana courts require clear proof of fraud, duress, or material mistake of fact under Mont. Code Ann. § 40-6-105(5)(c) to overturn an established paternity acknowledgment.

Requesting Court-Ordered DNA Testing After Signing a VAP

If you suspect you are not the biological father, you must ask the judge to order genetic testing as part of your Motion to Vacate. However, the judge will not automatically grant a DNA test just because you ask. You must first present enough preliminary evidence of fraud or mistake to justify the test. If the court agrees and orders the test, and the lab results prove you are not the biological father, the judge can vacate the VAP. Be aware that until the judge signs a final order vacating paternity, you are still legally required to pay any active child support orders.

Step-by-Step Process in Montana Courts

If you missed the 60-day window, follow these steps to challenge paternity:

  • Gather Evidence: Collect texts, emails, or communications where the mother admits you might not be the father, or any evidence proving you were misled.
  • File a Motion: Work with an attorney to file a formal Motion to Vacate the Acknowledgment of Paternity in the District Court where the child resides.
  • Request a DNA Test: File a simultaneous motion requesting a court-ordered, chain-of-custody genetic test.
  • Attend the Evidentiary Hearing: Present your evidence of fraud or mistake of fact to the judge. If successful, the judge will order the DNA test.
  • Final Order: If the DNA test excludes you as the father, ask the judge to issue an order terminating your parental rights and obligations.

How Much Does it Cost to Challenge Paternity in Montana?

Undoing paternity after the 60-day deadline is a complex legal battle that often requires significant financial investment.

Cost CategoryEstimated Amount in Montana
Administrative Rescission (Within 60 Days)Free to file, plus a small notary fee (usually $5-$10).
Court Filing Fees (Motion to Vacate)$120 to $200 depending on the specific county court.
Court-Ordered DNA Test$300 to $500 for certified lab testing.
Family Law Attorney Fees$2,000 to $5,000+ for complex fraud litigation.

How Long Does the Process Take?

Filing a rescission form within the first 60 days is fast; the state usually processes it within 2 to 4 weeks. However, if you must go to court to prove fraud or a mistake of fact, the process is much slower. Obtaining a hearing date, securing court-ordered DNA tests, and getting a final judgment from a Montana District Court can easily take 4 to 8 months.

Frequently Asked Questions (FAQ)

Can I get a refund on child support if I prove I am not the father?

Generally, no. Montana courts rarely order a mother to pay back child support that was already spent on raising the child. Vacating paternity usually only stops future child support payments.

What if I suspected I wasn't the father but signed the VAP anyway?

If you signed the VAP knowing there was a strong chance you were not the biological father, the court may deny your request to vacate it, ruling that you cannot claim a material mistake of fact if you already knew the truth.

Will an at-home DNA test hold up in court?

No. At-home DNA kits from pharmacies or genealogy websites are not admissible in Montana courts because they lack a strict legal chain of custody. You must use a court-approved lab.

Can a mother rescind the VAP?

Yes. The mother also has the exact same 60-day window to legally rescind the Voluntary Acknowledgment of Paternity if she realizes she made a mistake regarding the child's biological father.

Do I need a lawyer to prove paternity fraud?

While self-representation (pro se) is legally permissible in Montana District Courts, proving fraud, duress, or a material mistake of fact involves complex evidentiary requirements, making representation by a family law attorney strongly advised.


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