Can I adopt my stepchild if they live with the other biological parent part-time in Montana?

Yes, you can pursue a stepparent adoption in Montana even if your stepchild lives part-time with the other biological parent, but how that parent is involved is the key question, and the answer depends on your family's facts. The petition is filed in District Court, and living in a shared-custody arrangement does not by itself take the option off the table.

Why the other parent's role matters

When a child spends regular time with both biological parents, the other parent is usually still actively involved. Montana's abandonment statute, Mont. Code Ann. § 42-2-608, refers to a 6-month period. How that statute applies to a parent who has regular parenting time is a fact-specific question. Confirm it with an attorney or the District Court clerk in your county before you rely on it. A contested situation, where the other parent objects, should also be reviewed by an attorney.

Your realistic paths

• The other parent agrees. Talking openly with the other parent, and explaining what the adoption would mean for the child, is often where families start.
• The other parent's involvement changes over time. If contact drops, keeping a careful written record of dates and communication will help you or an attorney evaluate the abandonment statute later.
• The other parent objects. This is a contested case. Because the outcome turns on the specific facts and on how the court views them, speak with a Montana family law attorney about your situation.

Other Montana points that still apply

• Residency: Montana has no minimum residency period for filing (Mont. Code Ann. § 42-1-104(1)).
• Your stepchild's consent: Montana sets the child consent age at 12 (Mont. Code Ann. § 42-2-301). If your stepchild is 12 or older, their consent is part of the process.
• Home study: It is waived in stepparent adoptions (Mont. Code Ann. § 42-4-309).
• Timeline: A stepparent adoption in Montana typically takes about 3-6 months.
• Fees: Court filing fees vary, so the District Court clerk in your county can confirm the current amount.

Where to start

Think through your custody schedule and how involved the other parent really is. Is there a written parenting plan or court order? Does the other parent communicate with you? Has their involvement changed recently? These details shape which path is realistic, and the clerk's office can explain local filing steps, though it cannot advise you on your case. If the other parent might object, an attorney can tell you what the facts mean for your situation.

How we help

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. You then file it yourself without an attorney. The cost is $349 for the first child and $99 for each additional child. You receive court-ready documents within 24-48 hours after you finish the questions, and the package comes with our 100% court acceptance guarantee.