Divorce in Montana: Costs, Laws, and Calculators (2026)

Everything you need to understand the financial reality of divorce in Montana. State-specific costs, formulas, and free calculators.

Avg. uncontested
$1,500 - $3,500
Avg. contested
$9,000 - $28,000
Typical timeline
3 - 10 months
DCE State Score
68 / 100

Montana divorces typically cost 52% less than the national average of $12,900.

Montana uses the Melson child support formula and allows only no-fault divorce.

Montana is an equitable distribution state that permits only no-fault divorce, so neither spouse pleads wrongdoing. It is one of just three states, with Delaware and Hawaii, that use the Melson formula for child support, which reserves a basic living amount for each parent before calculating support. The waiting period is a short 20 days after filing, and a 90-day residency requirement applies. Attorney rates run $175 to $325 per hour, and a contested case typically lands between $9,000 and $28,000.

Key Fact

Montana is one of only three states that use the Melson child support formula, and its 20-day waiting period is among the shorter minimums in the country.

Recent Development

Montana continues to use the Melson formula for child support and to allow only no-fault divorce. These established rules mean cases focus on dividing property and arranging parenting, while the Melson calculation accounts for each parent's basic needs before setting support.

Montana Divorce Quick Facts

Verified statutory data, attorney rates, and procedural rules for Montana.

Property division system
Equitable Distribution (judicial discretion)
Alimony formula type
Judicial Discretion
Child support formula
Melson Formula
Mandatory waiting period
20 days
Residency requirement
90 days
Mediation required
No
Equal parenting presumption
No
Fault divorce available
No
Collaborative divorce available
Yes
Filing fee range
$200
Attorney hourly rates
$175 - $325/hour
Data last verified
January 1, 2025

DCE State Score Breakdown

Our proprietary index ranks every state on cost, complexity, and timeline. Higher is more favorable.

Overall DCE State Score

68/ 100

A score of 68 means Montana is roughly average in terms of divorce cost and complexity.

Cost Score

29/ 40

Based on filing fees, attorney rates, and total typical costs in Montana.

Complexity Score

24/ 30

Reflects judicial discretion, mandatory mediation, and procedural hurdles.

Timeline Score

15/ 30

Driven by waiting periods and average case duration from filing to decree.

Divorce Calculators for Montana

All 15 calculators preconfigured with Montana statutory data.

Montana Divorce Laws Overview

Property Division

Montana uses equitable distribution to divide marital property. This does not mean equal, it means fair, based on the circumstances. Judges consider factors including each spouse's income and earning capacity, contributions to the marriage, length of the marriage, and the economic circumstances of each spouse. Outcomes can vary significantly from case to case.

Spousal Support (Alimony)

Montana judges have broad discretion in setting alimony awards. There is no statutory formula. Courts weigh a set of statutory factors including: length of the marriage, standard of living during the marriage, each spouse's earning capacity, financial resources of each spouse. This means outcomes can vary significantly depending on the judge and the specific facts of your case.

Child Support

Montana uses the Melson Formula for child support. This model first reserves a basic self-support amount for each parent before calculating the child's share of the remaining income, which results in lower payments for lower-income parents compared to other models.

Custody and Parenting Time

Montana courts determine custody based on the best interests of the child. While there is no statutory presumption of equal time, courts generally favor arrangements that allow both parents meaningful involvement in the child's life.

This estimate is for planning purposes only and does not constitute legal or financial advice. Consult a licensed family law attorney in your state for guidance specific to your situation.

Frequently Asked Questions

How much does a divorce cost in Montana?
An uncontested divorce in Montana typically costs $1,500 - $3,500. Contested cases run $9,000 - $28,000, depending on attorney involvement, custody disputes, and the complexity of the marital estate. Court filing fees alone are $200.
How long does a divorce take in Montana?
Montana requires a 20-day waiting period after filing. Uncontested cases finalize in roughly 3 months on average, while contested cases take about 10 months from filing to final decree.
How is property divided in Montana?
Montana uses equitable distribution. Marital assets are divided based on what the court considers fair, not necessarily equal. Judges weigh income, contributions, length of marriage, and the economic circumstances of each spouse.
How is child support calculated in Montana?
Montana uses the Melson Formula. Montana uses the Melson Formula for child support. This model first reserves a basic self-support amount for each parent before calculating the child's share of the remaining income, which results in lower payments for lower-income parents compared to other models.
How is alimony determined in Montana?
Montana alimony follows a judicial discretion approach. Montana judges have broad discretion in setting alimony awards. There is no statutory formula. Courts weigh a set of statutory factors including: length of the marriage, standard of living during the marriage, each spouse's earning capacity, financial resources of each spouse. This means outcomes can vary significantly depending on the judge and the specific facts of your case.

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