Are there any special requirements for adoption in Montana?

The Montana requirements at a glance

Here is what Montana asks of you, under Montana Code Annotated Title 42:

• Court: You file in District Court. Montana has 56 counties, and each has its own clerk and local filing practices.
• Residency: There is no minimum residency period for adopting a child (Mont. Code Ann. § 42-1-104(1)).
• Child's consent: A child who is 12 or older must consent to the adoption (Mont. Code Ann. § 42-2-301).
• Abandonment period: Montana's period is 6 months (Mont. Code Ann. § 42-2-608). This matters when the other parent has dropped out of the child's life.
• Home study: Waived for stepparent adoptions (Mont. Code Ann. § 42-4-309). Nobody inspects your house as a condition of adopting your stepchild.
• No separate termination case: You don't have to file a stand-alone case to end the other parent's rights before you start. It is handled within the adoption.
• Adopter's age: An unmarried or legally separated adult adopting on their own must be at least 18, and a married couple adopts jointly. We found no required age gap between adopter and child in the statute.

That's the list. Nothing here requires you to live in Montana for a set time first, wait out a trial period, or pass a home inspection.

Consent: what actually happens

Courts want a child to have the security of two active legal parents. The judge's question is whether the adoption gives your stepchild a stable family, and whether the other parent is actually part of the child's life.

In most stepparent adoptions, the other parent, usually the father, never signs a consent. This is what courts see every day. The usual reasons:

• Contact stopped. The parent hasn't been in the child's life.
• Support stopped. The parent hasn't been providing for the child.
• Can't be found. The parent's whereabouts are unknown.
• Deceased. The parent has died.

Montana sets the abandonment period at 6 months, so if the other parent has been out of the picture for that long, your situation is the kind courts handle regularly.

If the other parent can't be reached, notice and publication are routine steps. We prepare those documents as part of your package. They are not obstacles.

If the other parent is willing to sign, that makes things simpler, but you don't need a signature to go forward. If the other parent actively shows up to fight the adoption in court, some families choose to add an attorney for that hearing.

If your stepchild is 12 or older, plan on their consent too. Most kids that age have strong feelings about it, and for many families this is the best part of the process.

One more point on money: once the adoption is final, your stepchild's other parent no longer owes support going forward. Whether past-due support can still be collected depends on state law.

How the process and timeline work

You prepare a petition and the supporting documents, file them with the District Court clerk in your county, and attend a hearing where the judge finalizes the adoption. Because the home study is waived and there's no separate termination case, the paperwork is more direct than in many states.

• Timeline: Stepparent adoptions in Montana generally take 3-6 months from filing to decree.
• Court filing fee: Your county clerk sets it. Call the clerk's office to confirm the amount and ask whether the court has any local forms or filing preferences.
• After the decree: You work with the Montana Office of Vital Statistics to update your child's birth certificate. We walk you through that step too.

Billings, Missoula, Great Falls, Bozeman, and Butte are Montana's major cities, and each sits in a different county with its own clerk. The state rules are the same, but small local details can differ, so your documents should be prepared for your specific county.

Adult adoption in Montana

If you want to adopt a stepchild who is already an adult, Montana permits it, and the rules differ from child adoption.

Other points for adult adoption:

• Who can adopt: An adult may adopt another adult or an emancipated minor, but may not adopt the adult's spouse (MCA 42-4-402(1)). Adopting an incompetent individual of any age must meet all the child-adoption requirements.
• Parents' consent: Adults may be adopted without the consent of their parents (MCA 42-4-401).
• Who consents: Only the adoptee, the prospective adoptive parent, and the adoptive parent's spouse. The spouse's consent isn't needed if the spouse and adopter are legally separated, or if the court finds the spouse incapable or withholding consent contrary to best interests.
• How consents are signed: In writing, before the court or a person authorized to take acknowledgments. They must state that the parties agree to the parent-child relationship and understand the inheritance, property, and support consequences.
• Where to file: In the county where a petitioner lives.
• One adult at a time: A person who adopted an adult may not adopt another adult within 1 year unless the new adoptee is a sibling of the first.

For hearing details in an adult case, call us at (855) 924-0450 and we'll tell you what your county expects.

Questions families ask next

Do we need a home study? No. Montana waives it for stepparent adoptions (Mont. Code Ann. § 42-4-309).

Do I have to live in Montana for a certain time before I file? For a child adoption, Montana has no minimum residency period (Mont. Code Ann. § 42-1-104(1)). For an adult adoption, the petitioner must have lived in Montana at least 90 days before filing.

What if I don't know where the other parent is? That's common, and it's one of the main reasons the other parent never signs. Notice and publication are routine steps, and we prepare those documents for you.

Can I do this without a lawyer? Yes. Many families file on their own. We prepare the complete package for your county, and you file it yourself.

How much is the court filing fee? Your county clerk sets it. Call the clerk's office to confirm before you file.

Getting started with us

StepParent Adoption 360 is a document preparation service, not a law firm. You answer questions online, and we prepare the complete court document package for your Montana county, ready within 24-48 hours after you finish. You file it yourself, and we support you until the decree. The price is $349 for the first child (or one adult adoptee) and $99 for each additional child, backed by a 100% court acceptance guarantee. We've helped 151 Montana families and more than 34,000 nationally since 2001. Questions? Call us at (855) 924-0450.