Montana Single Mom Guide: Custody Laws, Child Support, Benefits, and Legal Help

Legal disclaimer: This article provides general information only and is not legal advice. Montana family law is complex and state-specific. Consult a licensed Montana family law attorney for guidance specific to your situation.

Montana Single Mom Guide: Custody Laws, Child Support, Benefits, and Legal Help

Montana expanded Medicaid in 2015 through a legislative vote, uses an income shares model for child support, and handles family law through District Courts. Montana has a significant Native American population — eight federally recognized tribes — making the Indian Child Welfare Act relevant for a meaningful portion of the state’s families. Montana is also the fourth-largest state by area with a very small and geographically dispersed population, creating significant rural access challenges. Here’s what single mothers in Montana need to know.

Montana Child Support

Montana uses the Income Shares model, governed by Montana Code Annotated § 40-4-204 and the Montana Child Support Guidelines. Montana calculates child support based on both parents’ gross income.

Key Montana-specific facts:

  • Montana calculates child support using combined gross monthly income of both parents. The Montana Child Support Guidelines provide a schedule of basic support obligations based on combined income and number of children
  • Parenting time adjustment: Montana’s guidelines include a parenting time adjustment that reduces the basic support obligation when the non-custodial parent has substantial parenting time. The adjustment is based on the percentage of overnight parenting time, scaling from 29% to 50% — meaning it activates when the non-custodial parent has approximately 106 overnights per year or more. Below this threshold, the standard formula applies
  • Healthcare costs for the child and work-related childcare costs are added to the basic obligation and shared proportionally
  • Child support in Montana is enforced by the Montana Child Support Enforcement Division (CSED) within the Department of Public Health and Human Services (DPHHS). IV-D services are free
  • Income withholding is the standard enforcement mechanism
  • Child support in Montana continues until the child turns 18, or until age 19 if the child is still in high school. Montana courts also have discretionary authority to order post-secondary education support in appropriate cases — this provision is fact-specific and an attorney should be consulted
  • Montana does not have a comprehensive statutory college support framework

Where to apply: Montana Child Support | How to Apply for Child Support

Montana Custody Law

Montana handles family law through the District Court system. Montana uses legal custody and physical custody terminology, with parenting plan as the expected framework for custody arrangements.

Key Montana-specific facts:

  • Montana has no statutory presumption favoring either parent. Courts apply the best interest of the child standard under Montana Code Annotated § 40-4-212
  • Montana’s best interest factors (MCA § 40-4-212) include: the wishes of the parents; the wishes of the child with appropriate weight; the child’s relationship with each parent, siblings, and other family members; the child’s adjustment to home, school, and community; the mental and physical health of all parties; each parent’s ability to give first priority to the child’s welfare; each parent’s ability to support the other’s relationship with the child; continuity and stability; domestic abuse history; chemical dependency history; and any other relevant factor
  • Parenting plans: Montana law (MCA § 40-4-234) requires parents to submit a parenting plan in all custody proceedings. Courts expect parenting plans — having one prepared before any custody hearing is the standard approach. Montana’s courts provide parenting plan forms through their self-help resources
  • Legal custody can be joint (both parents share major decisions) or sole (one parent decides). Joint legal custody is common when parents can cooperate
  • Physical custody can be primary with one parent and scheduled parenting time for the other, or shared with more equal residential time
  • The child’s preference: Montana’s best interest factors include the wishes of the child with appropriate weight. Courts give increasing consideration to the preferences of older, more mature children
  • Relocation: Montana Code Annotated § 40-4-217 governs relocation. A parent who intends to relocate with the child must provide written notice at least 30 days before the proposed move to the other parent. The other parent can petition to modify the parenting plan, and the court evaluates the proposed relocation under the best interest standard
  • Domestic violence: Montana’s best interest factors explicitly include domestic abuse history. Montana has a Partner and Family Member Assault (PFMA) statute and civil Order of Protection provisions (MCA § 40-15-101 et seq.) that can include temporary custody provisions. A history of domestic abuse is a significant factor in custody proceedings
  • ICWA and tribal considerations: Montana has eight federally recognized tribes, and the Indian Child Welfare Act applies to child custody proceedings involving Native children. This is relevant for a meaningful portion of Montana families — if you or your child have tribal membership or eligibility, ICWA may apply. Consult an attorney with ICWA experience

Resources: Custody Basics | Parallel Parenting vs. Co-Parenting

Montana Benefits and Assistance Programs

Montana Medicaid (Healthy Montana)
Montana expanded Medicaid under the ACA in 2016 through a legislative vote, after initial expansion legislation passed in 2015 and was signed into law. Montana’s Medicaid expansion program is called Healthy Montana.

  • Healthy Montana covers low-income adults under ACA expansion at qualifying income levels
  • Montana Medicaid covers children, pregnant women, and other traditional Medicaid populations
  • Montana CHIP — covers children in families above traditional Medicaid income thresholds
  • Apply through MontanaHelpLink at dphhs.mt.gov/hcsd/medicaid or your local DPHHS office

SNAP (Supplemental Nutrition Assistance Program)
Montana administers SNAP through the Department of Public Health and Human Services (DPHHS). Apply online at benefitsmt.gov — Montana’s online benefits portal — or at your local DPHHS office.

TANF (Montana — FAIM)
Montana’s TANF program is called Families Achieving Independence in Montana (FAIM):
– Montana has a 60-month (5-year) lifetime limit on FAIM cash assistance, consistent with the federal TANF limit
– FAIM emphasizes work participation and employment services
– Montana also has an Individual Development Account (IDA) program within FAIM that allows recipients to save matched funds for education, a home, or a business — a distinctive asset-building component
– Apply through benefitsmt.gov or your local DPHHS office

Child Care Assistance Program
Montana’s childcare subsidy is administered through DPHHS. Eligibility is income-based for working or training families. Apply through your local DPHHS office or the Montana childcare resource and referral network.

Additional Montana programs:
– WIC — apply through your local health department or WIC clinic
– Low Income Home Energy Assistance Program (LIHEAP) — important given Montana’s cold climate; administered through local Community Action Agencies; apply in the fall for winter heating assistance
– Montana Board of Housing — housing.mt.gov — state housing finance agency with rental assistance and homebuyer programs
– Tribal assistance programs — members of Montana’s eight federally recognized tribes may be eligible for tribal-administered assistance programs; contact your tribe’s social services department
– Montana 2-1-1 — dial 2-1-1 for local resource referrals

Apply at: benefitsmt.gov — Montana’s online benefits portal for SNAP, FAIM, and other DPHHS programs

Montana Legal Help Resources

Montana Legal Services Association (MLSA) — the primary statewide legal aid organization for Montana. montanalegalservices.org | Intake: 406-442-9830 (Helena) or 1-800-666-6899 (statewide)

Montana Advocates for Children and Families — advocacy organization for families and children’s issues in Montana. mtadvocates.org

Montana LawHelp — montanalawhelp.org — legal information and referral for Montana, including family law self-help guides.

Montana Judicial Branch Self-Help — courts.mt.gov/portals/189/library/docs/self-help — self-help resources and family law forms including parenting plan forms for Montana District Courts.

State Bar of Montana Lawyer Referral — montanabar.org — attorney referral with initial consultations.

Montana Coalition Against Domestic and Sexual Violence (MCADSV): mcadsv.com | 24-hour hotline: 1-888-404-7794

Montana-Specific Points Worth Knowing

ICWA and eight tribal nations: Montana has eight federally recognized tribes — the Blackfeet Nation, Crow Nation, Assiniboine and Sioux Tribes of Fort Peck, Chippewa Cree Tribe of Rocky Boy’s, Confederated Salish and Kootenai Tribes, Fort Belknap Indian Community, Little Shell Tribe of Chippewa Indians, and Northern Cheyenne Tribe. ICWA applies to child custody proceedings involving children who are or may be members of or eligible for membership in these tribes. If tribal heritage is relevant to your family, consulting an attorney with ICWA experience before any custody proceeding is important.

Healthy Montana expansion in 2016: Montana expanded Medicaid through a bipartisan legislative vote in 2015 (effective 2016) — a notable achievement in a largely conservative state. Healthy Montana has been reauthorized since. Check current income thresholds and program status.

FAIM’s Individual Development Account: Montana’s TANF program includes an IDA component that allows recipients to save money with matching funds for a home, education, or small business. This is a distinctive asset-building feature not found in most states’ TANF programs. If you’re on FAIM, ask specifically about the IDA program.

Parenting plans required: Montana law requires parenting plans in all custody proceedings. Montana’s courts provide standardized parenting plan forms. Preparing a proposed parenting plan before any custody hearing reflects what Montana courts expect.

30-day relocation notice: Montana’s 30-day notice requirement before relocating with a child is among the shorter windows nationally. Prompt action if you’re considering any move that would affect the existing parenting plan is important.

106-overnight parenting time threshold: Montana’s parenting time adjustment in child support activates at approximately 106 overnights per year (29% of the year). A relatively moderate threshold.

Montana’s geography: Montana is the fourth-largest state by area with a population of roughly one million — meaning vast distances between communities. Legal aid offices, DPHHS offices, and courts may be hours away for residents of rural Montana. MLSA’s statewide intake line and the benefitsmt.gov online portal are critical access points for Montanans in remote areas.

Cold climate and energy assistance: Montana’s winters are severe across most of the state, and heating costs are a significant financial pressure. LIHEAP through local Community Action Agencies is an important resource — applying in the fall before the heating season is essential.


Key Links: Montana Single Mom Resources

Resource What It Covers Website
benefitsmt.gov SNAP, FAIM, other DPHHS benefits benefitsmt.gov
Montana Medicaid Healthy Montana, CHIP dphhs.mt.gov/hcsd/medicaid
Montana CSED Child support services dphhs.mt.gov/csed
Montana Legal Services Free legal help statewide montanalegalservices.org
Montana LawHelp Legal information and referral montanalawhelp.org
Montana Courts Self-Help Family law forms courts.mt.gov
MCADSV Domestic violence resources mcadsv.com
Montana 2-1-1 Local social services Dial 2-1-1