Does the other parent's child support end after a stepparent adoption in Montana?

Going forward, yes. Under MCA 42-5-202(1)(b), after the decree the former parent is relieved of all parental responsibilities for the child and has no rights over the child, except for a former parent's duty to pay arrearages for child support. Past-due support can still be owed after the adoption. An attorney review is available if arrears are a concern.

Can a child adopted by a stepparent in Montana inherit from both sides?

Yes. MCA 42-5-202(1)(a) creates the full parent and child relationship between the child and you and your kindred. For inheritance, MCA 72-2-124(2) says adoption by the spouse of a natural parent has no effect on the child's relationship with that parent or on the right of the child or a descendant to inherit from or through the other natural parent. Your spouse's consent form under MCA 42-4-304 recites the same point.

What if the other parent objects or cannot be found in a Montana stepparent adoption?

The packet will not fit; file a petition to terminate and serve notice of the hearing on the parent (MCA 42-2-605). Under MCA 42-2-608 the court may find unfitness for willful abandonment (MCA 41-3-102) or if the parent, if able, has not contributed to support for an aggregate 1 year before the adoption petition. If the child is in the legal and physical custody of your spouse and you, it may also find, upon clear and convincing evidence, that the parent is not able or willing to promptly establish and maintain contact and pay support per the parent's means, with best interests by a preponderance.

Does my spouse have to consent to my stepparent adoption in Montana?

Yes. When you file, the custodial parent shall file a consent executed under MCA 42-4-304 (MCA 42-4-303(1)). It must be in writing, signed before an individual authorized to take acknowledgments, and state that your spouse has legal and physical custody, consents, and understands the adoption will not end your spouse's own parental relationship but will end the other parent's relationship and any existing custody or visitation order.

How long does a stepparent adoption take in Montana, and what does it cost?

Timing depends on the case. MCA 42-5-106(1)(a) requires the child to have been in your physical custody for at least 6 months before the decree, unless the court for good cause waives it under MCA 42-4-309. A contested termination adds time for service and a hearing. Ask the Clerk of District Court for the filing fee; the packet includes an Affidavit of Inability to Pay for those who cannot afford it.

Stepparent Adoption in Montana

Reviewed by DocDraft Legal Team - Montana - Last updated October 6, 2026

In Montana a stepparent adopts in the district court (MCA 42-1-103(8)), and must obtain an order terminating the rights of the child's noncustodial parent prior to or contemporaneously with the petition to adopt (MCA 42-4-310). That parent can relinquish parental rights to you in writing (MCA 42-4-301), or the court can terminate those rights for unfitness under MCA 42-2-608, for example when the parent, if able, has not contributed to the child's support for an aggregate period of 1 year before the adoption petition is filed, after notice of the termination hearing is served on that parent. Your spouse must have legal and physical custody, the child must have lived with you both during the 60 days before filing (MCA 42-4-302), and your spouse files a written consent. A child 12 years of age or older must also consent (MCA 42-4-303(2)).

Find out where you stand in Montana

Where are you with adopting your stepchild?

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How are the other parent's rights ended in a Montana stepparent adoption?

MCA 42-4-310 requires an order ending the other parent's rights before or with your petition. The parent may sign a relinquishment (MCA 42-4-301). Otherwise, after notice of the hearing, the court may find unfitness under MCA 42-2-608, such as willful abandonment (MCA 41-3-102) or, if able, no support contribution for an aggregate 1 year before the adoption petition.

Which court and which form are used for a stepparent adoption in Montana?

File in the district court, through the Clerk of District Court in your county (MCA 42-1-103(8)). The Montana Judicial Branch posts a statewide Stepparent Adoption Packet with a petition, consents, a Waiver of Parental Rights and a decree. The packet is only for cases where the other parent agrees in writing or that parent's rights are already terminated.

Is a home study required for a stepparent adoption in Montana?

Not always. Under MCA 42-4-309, in a stepparent adoption, if the court is satisfied that the adoption is in the best interests of the child, it may waive the preplacement evaluation and the 6-month postplacement evaluation and report and grant a decree. The waiver is the court's decision, so ask for it in your petition.

At what age must the child consent to a stepparent adoption in Montana?

If the child has attained 12 years of age, the child shall consent to the adoption (MCA 42-4-303(2)). MCA 42-2-301(6) lets the child consent either in writing or in court, unless the child does not have the mental capacity to consent. The state packet includes a Child's Consent to Stepparent Adoption form for this.

Montana's termination-first rule, the district court, and the 60-day standing test

Montana handles stepparent adoption in Title 42, chapter 4, part 3 of its code, and adoptions are heard in the district court (MCA 42-1-103(8)). You have standing under MCA 42-4-302(1)(a) if your spouse has legal and physical custody of the child and the child has been in the physical custody of your spouse and you during the 60 days preceding the filing of the petition. Montana does not simply excuse the other parent's consent: MCA 42-4-310 requires an order of termination of the noncustodial parent's rights prior to or contemporaneously with the petition to adopt, and MCA 42-4-302(3) lets you join the two petitions. The other parent may relinquish rights to you in writing before a notary (MCA 42-4-301, 42-2-408). If not, the court may terminate for unfitness under MCA 42-2-608, including when the parent has willfully abandoned the child as defined in MCA 41-3-102; when it is proven to the satisfaction of the court that the parent, if able, has not contributed to the support of the child for an aggregate period of 1 year before the filing of a petition for adoption; or when it is proven to the satisfaction of the court that the parent is in violation of a court order to support the child or other children with the same birth mother. A ground written for stepparent cases, MCA 42-2-608(1)(h)(ii)(B), applies to a parent given proper notice of hearing who is a respondent to the petition to terminate, when the child is in the legal and physical custody of the other parent and the stepparent: the court must find upon clear and convincing evidence that the parent is not able or willing to promptly establish and maintain contact with the child and to pay for the child's support in accordance with the parent's financial means, and by a preponderance of the evidence that termination is in the child's best interests. The court may waive the home study under MCA 42-4-309, and a child 12 or older must consent (MCA 42-4-303(2)). The Montana Judicial Branch posts a statewide Stepparent Adoption Packet for consent cases.

Relevant Laws

MCA 42-4-302 to 42-4-304 (Standing and consent in stepparent adoption)

A stepparent has standing if the spouse has legal and physical custody and the child was in the physical custody of the spouse and the stepparent during the 60 days preceding the petition. The custodial parent files a written consent under MCA 42-4-304, and if the child has attained 12 years of age, the child shall consent.

MCA 42-4-310 and 42-2-608 (Termination of the other parent's rights)

MCA 42-4-310 requires an order of termination of the noncustodial parent's rights prior to or contemporaneously with the petition to adopt. MCA 42-2-608 lists unfitness grounds, including willful abandonment, failure, if able, to contribute to support for an aggregate period of 1 year before the adoption petition, and, for a child in the custody of the other parent and a stepparent, a parent not able or willing to promptly establish and maintain contact and pay support, found upon clear and convincing evidence, with best interests found by a preponderance.

MCA 42-4-309 (Evaluation waiver in stepparent adoption)

In a stepparent adoption, if the court is satisfied that the adoption is in the best interests of the child, the court may waive the requirement of a preplacement evaluation and the 6-month postplacement evaluation and report and grant a decree of adoption.

Montana Judicial Branch: Adoption forms

Statewide Stepparent Adoption Packet (petition, Agreement to Accept Temporary Custody, Waiver of Parental Rights, spouse's consent, Child's Consent, Order Setting Hearing and decree), for cases where the other parent agrees in writing or that parent's rights are already terminated, plus a link to the DPHHS Certificate of Adoption form.

Regional Variances

Montana stepparent adoption requirements

Court

District court (MCA 42-1-103(8) defines court in Montana as a district court or a tribal court). File with the Clerk of District Court in your county.

Petition form

Statewide Stepparent Adoption Packet posted by the Montana Judicial Branch, with a Petition for Stepparent Adoption and related forms. It has no form number and is only for cases where the other parent agrees in writing or that parent's rights are already terminated. Petition contents: MCA 42-5-101.

Other parent's consent

The noncustodial parent's rights must be terminated by an order prior to or contemporaneously with the petition to adopt (MCA 42-4-310). A voluntary route is a notarized relinquishment to the stepparent, executed after the child is 72 hours old and accepted by the stepparent in writing (MCA 42-4-301). The custodial spouse files a written consent (MCA 42-4-303(1), 42-4-304).

Proceeding without consent

Petition to terminate, joinable with the adoption (MCA 42-4-302(3)), with notice of hearing served on the parent (MCA 42-2-605). Unfitness grounds under MCA 42-2-608 include: willful abandonment as defined in MCA 41-3-102; proof to the satisfaction of the court that the parent, if able, has not contributed to the support of the child for an aggregate period of 1 year before the filing of a petition for adoption; proof to the satisfaction of the court that the parent is in violation of a court order to support the child or other children with the same birth mother; and, for a parent given proper notice when the child is in the legal and physical custody of the other parent and the stepparent, a finding upon clear and convincing evidence that the parent is not able or willing to promptly establish and maintain contact with the child and to pay for the child's support in accordance with the parent's financial means, plus a finding by a preponderance of the evidence that termination is in the child's best interests. A served parent who fails to appear can be found to have irrevocably waived rights (MCA 42-2-611).

Home study

The court may waive the preplacement evaluation and the 6-month postplacement evaluation and report if satisfied the adoption is in the child's best interests (MCA 42-4-309).

Residency or waiting period

The child must have been in the physical custody of the spouse and the stepparent during the 60 days preceding the petition (MCA 42-4-302(1)(a)). The decree requires 6 months of physical custody unless the court for good cause waives it under MCA 42-4-309 (MCA 42-5-106(1)(a)).

Child's consent age

12 years of age or older (MCA 42-4-303(2)), in writing or in court, unless the child does not have the mental capacity to consent (MCA 42-2-301(6)).

Suggested Compliance Checklist

Decide how the other parent's rights will be terminated

Before filing days after starting

MCA 42-4-310 requires a termination order before or with the adoption petition. Ask whether the other parent will sign a notarized relinquishment (MCA 42-4-301). If not, check the MCA 42-2-608 grounds: willful abandonment as defined in MCA 41-3-102; failure, if able, to contribute to support for an aggregate period of 1 year before the adoption petition; or, if the child is in the legal and physical custody of your spouse and you, a finding upon clear and convincing evidence that the parent is not able or willing to promptly establish and maintain contact and pay support per the parent's means, with termination in the child's best interests found by a preponderance of the evidence. Notice of the hearing must be served on the parent.

File the petition with the Clerk of District Court

After 60 days of the child living with you and your spouse days after starting

File the Petition for Stepparent Adoption, your spouse's consent, any relinquishment or termination order, and any custody or visitation orders (MCA 42-5-101(2)). Join a petition to terminate if needed (MCA 42-4-302(3)). Address the Indian Child Welfare Act in the petition (MCA 42-5-101(1)(j)). Ask the clerk for the filing fee.

Serve notice and request the evaluation waiver

Right after filing days after starting

Serve notice of the termination hearing on a parent who has not waived notice, under the Montana Rules of Civil Procedure, and file proof of service (MCA 42-2-605). Ask the court to waive the preplacement and postplacement evaluations under MCA 42-4-309 and, for good cause, the 6-month custody period (MCA 42-5-106(1)(a)).

Gather the written consents

Before the hearing days after starting

Collect your spouse's acknowledged consent under MCA 42-4-304 and, if the child is 12 or older, the child's consent (MCA 42-4-303(2)), which may also be given in court. Bring copies of everything filed to the hearing, which you must attend.

Confirm the child's new name and update records

After the decree of adoption days after starting

Check that the decree reflects the name stated in your petition (MCA 42-5-101(1)(e)) and orders a new birth certificate if you asked for one (MCA 42-5-201(2)). File the DPHHS Certificate of Adoption form and get certified copies of the decree for schools and agencies. A separate name change petition is needed only for changes outside the adoption.

Document: name-change-petition

Task	Description	Document	Days after starting
Decide how the other parent's rights will be terminated	MCA 42-4-310 requires a termination order before or with the adoption petition. Ask whether the other parent will sign a notarized relinquishment (MCA 42-4-301). If not, check the MCA 42-2-608 grounds: willful abandonment as defined in MCA 41-3-102; failure, if able, to contribute to support for an aggregate period of 1 year before the adoption petition; or, if the child is in the legal and physical custody of your spouse and you, a finding upon clear and convincing evidence that the parent is not able or willing to promptly establish and maintain contact and pay support per the parent's means, with termination in the child's best interests found by a preponderance of the evidence. Notice of the hearing must be served on the parent.	-	Before filing
File the petition with the Clerk of District Court	File the Petition for Stepparent Adoption, your spouse's consent, any relinquishment or termination order, and any custody or visitation orders (MCA 42-5-101(2)). Join a petition to terminate if needed (MCA 42-4-302(3)). Address the Indian Child Welfare Act in the petition (MCA 42-5-101(1)(j)). Ask the clerk for the filing fee.	-	After 60 days of the child living with you and your spouse
Serve notice and request the evaluation waiver	Serve notice of the termination hearing on a parent who has not waived notice, under the Montana Rules of Civil Procedure, and file proof of service (MCA 42-2-605). Ask the court to waive the preplacement and postplacement evaluations under MCA 42-4-309 and, for good cause, the 6-month custody period (MCA 42-5-106(1)(a)).	-	Right after filing
Gather the written consents	Collect your spouse's acknowledged consent under MCA 42-4-304 and, if the child is 12 or older, the child's consent (MCA 42-4-303(2)), which may also be given in court. Bring copies of everything filed to the hearing, which you must attend.	-	Before the hearing
Confirm the child's new name and update records	Check that the decree reflects the name stated in your petition (MCA 42-5-101(1)(e)) and orders a new birth certificate if you asked for one (MCA 42-5-201(2)). File the DPHHS Certificate of Adoption form and get certified copies of the decree for schools and agencies. A separate name change petition is needed only for changes outside the adoption.	name-change-petition	After the decree of adoption

Frequently Asked Questions

Other Montana guides

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Asset Protection Planning in Montana (2026)

Dealing With Debt Collectors in Montana (2026)

Expunging a Criminal Record in Montana (2026)

Filing a Workplace Harassment Complaint in Montana

Filing Chapter 7 Bankruptcy in Montana (2026)

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