Montana's rule on modifying maintenance turns on a feature the national template does not capture: Changed circumstances so substantial and continuing as to make the terms unconscionable — a high bar; retirement at a reasonable age and disabling health changes are the most common successful grounds. The controlling authority is Mont. Code § 40-4-208(2)(b). Where the original decree contained no maintenance, § 40-4-208(2)(a) allows a modification petition only within two years of the decree. Death of either party or remarriage of the recipient ends maintenance unless the decree provides otherwise.
Key takeaways
- Montana calls these payments maintenance, governed for modification purposes by Mont. Code § 40-4-208(2)(b).
- The legal standard: Changed circumstances so substantial and continuing as to make the terms unconscionable — a high bar; retirement at a reasonable age and disabling health changes are the most common successful grounds.
- Modification reaches only installments after actual notice of the motion.
- Termination events: Death of either party or remarriage of the recipient ends maintenance unless the decree provides otherwise.
- Where the original decree contained no maintenance, § 40-4-208(2)(a) allows a modification petition only within two years of the decree.
- File in petition to modify filed in the district court case — do not wait: Modification reaches only installments after actual notice of the motion.
- Companion reading: Montana maintenance guide and how to modify child support in Montana.
Worked example under Montana law
The illustration below uses only rules already stated for Montana. It is a research hypothetical, not a prediction of what a court will do.
A former spouse in Montana asks to change periodic maintenance after retirement or a drop in income.
- File a petition to modify filed in the district court case.
- Match the facts to the Montana standard: Changed circumstances so substantial and continuing as to make the terms unconscionable — a high bar; retirement at a reasonable age and disabling health changes are the most common successful grounds.
- Check whether this award can be modified at all: Where the original decree contained no maintenance, § 40-4-208(2)(a) allows a modification petition only within two years of the decree.
- If the request is to end support, prove a trigger: Death of either party or remarriage of the recipient ends maintenance unless the decree provides otherwise.
Modification reaches only installments after actual notice of the motion. The forum is the district court that entered the decree, or the Child Support Enforcement Division (CSED).
The legal standard in Montana
Changed circumstances so substantial and continuing as to make the terms unconscionable — a high bar; retirement at a reasonable age and disabling health changes are the most common successful grounds.
Courts start from the decree, not from scratch. The judge asks what the parties and the court knew when maintenance was set, what has changed since, and whether the change is significant and durable enough to make the existing terms unreasonable. The moving party carries the burden, and documentation — tax returns, pension statements, medical records, lease agreements — decides most of these cases.
Grounds that most often succeed
- Retirement. Many states now treat reaching full retirement age as a presumptive or statutory ground. Early or voluntary retirement is scrutinized: courts ask whether it was in good faith, whether it was foreseeable at divorce, and whether the recipient had a chance to save.
- Involuntary income loss. Layoffs, business failure, disability, or industry collapse — with proof of diligent job-seeking. Voluntary underemployment is commonly met with income imputation instead of relief.
- The recipient's changed need. Improved earnings, remarriage-adjacent cohabitation, an inheritance, or reduced expenses.
- Health changes. New disability or extraordinary medical costs on either side.
- Cohabitation. Death of either party or remarriage of the recipient ends maintenance unless the decree provides otherwise.
Grounds that rarely work: a new partner's income without statutory cohabitation, ordinary inflation, the payor's new family expenses standing alone, or a temporary dip in earnings.
Cohabitation and remarriage
Death of either party or remarriage of the recipient ends maintenance unless the decree provides otherwise.
Cohabitation cases are intensely fact-driven: shared finances, shared household expenses, the relationship's public character, and its duration all matter. Montana procedure requires proof — surveillance or speculation is not enough, and the recipient gets discovery and a hearing before payments stop. Until a court order issues, keep paying.
Step-by-step: how to file
- Read the decree and any incorporated agreement. Where the original decree contained no maintenance, § 40-4-208(2)(a) allows a modification petition only within two years of the decree. Confirm the court retained jurisdiction to modify.
- Confirm the forum. Modification goes to a petition to modify filed in the district court case. If a party has moved away, UIFSA and registration rules determine where the petition belongs.
- Gather evidence dated to the change. Termination notices, disability awards, pension and Social Security statements, tax returns, medical records, or evidence of the recipient's cohabitation.
- File and serve promptly. Modification reaches only installments after actual notice of the motion.
- Exchange financial disclosure. Many courts require updated financial affidavits; self-employment cases often add forensic accounting or a vocational expert.
- Seek temporary relief if needed. Where circumstances are dire, ask the court for interim reduction or suspension pending the full hearing — Montana judges can grant temporary remedies in appropriate cases.
- Litigate, mediate, or stipulate. A settlement must be reduced to an order and entered before payment obligations change.
When the change takes effect
Modification reaches only installments after actual notice of the motion.
The corollary: unilaterally reducing or stopping payments before an order issues builds arrears, interest, and contempt exposure — even if you ultimately win the modification.
Awards that cannot be modified (or are hard to change)
Where the original decree contained no maintenance, § 40-4-208(2)(a) allows a modification petition only within two years of the decree.
Common traps:
- Lump-sum or property-division awards styled as maintenance are usually final when entered.
- Agreement language that waives modification binds the parties even though the statute would allow a petition.
- Expired terms — once a fixed term lapses, most states will not revive it; a timely pre-expiration motion is critical.
- Jurisdiction reservations — in some states, if the decree did not expressly reserve jurisdiction to modify, no later court can.
Case law: how Montana courts decide maintenance modification
These LawDiver opinions show how Montana appellate courts weigh changed circumstances, retirement, and cohabitation:
In RE THE MARRIAGE OF MARTHA J. BURRIS, Plaintiff and Respondent, v. BILLY C. BURRIS, Defendant and Appellant
…r. Burris to pay a $250 per month sum “as and for permanent alimony.” Throughout both marriages, Mr. Burris held a position as an Immigration Officer of the United States. Mrs. Burris did not work outside the home but took care of the couple’s three sons. Today Mr. Burris is retired. Mrs. Burris is now unemployed, although at one time she held a full-time job for five years at…
On maintenance modification, In RE THE MARRIAGE OF MARTHA J. BURRIS, Plaintiff and Respondent, v. BILLY C. BURRIS, Defendant and Appellant speaks to the Montana dispute in this passage: "Burris to pay a $250 per month sum “as and for permanent alimony.” Throughout both marriages, Mr. Burris held a position as an Immigration Officer of the United States. Mrs. Burris did not work outside the home but took care of the couple’s three sons. Today Mr. Burris is retired." The surrounding opinion shows how the court applied that language to the record.
In Re the MARRIAGE OF FLORENCE A. REILLY, Petitioner and Respondent, and RUDDY RAYNER REILLY, Respondent and Appellant
…of not less than Two Hundred Dollars ($200.00) per month as alimony and for the care, support, and maintenance and education of said minor children in addition to any reasonable expenses incurred on behalf of said minor children for medical, hospital, dental care and optical.” (Emphasis added.) After the property settlement was executed, the wife with her two minor daughters to…
In Re the MARRIAGE OF FLORENCE A. REILLY, Petitioner and Respondent, and RUDDY RAYNER REILLY, Respondent and Appellant is worth reading on Montana maintenance modification because the court put the point in its own words: "Two Hundred Dollars ($200.00) per month as alimony and for the care, support, and maintenance and education of said minor children in addition to any reasonable expenses incurred on behalf of said minor children for medical, hospital, dental care and optical.” (Emphasis added." Use that passage as the starting point, then read the facts that precede it.
In Re the MARRIAGE OF RICHARD RUSH, Petitioner and Respondent, and BARBARA RUSH, Respondent and Appellant
…ch child attained the age of majority and $400 per month in alimony until the alimony payments reached a total of $24,000. A provision for renegotiation of the terms of the settlement was included therein. Two of the children have been emancipated and are no longer in need of support. The youngest child, Richard Jr., is 17 years of age and still dependent upon his parents for s…
Montana opinions such as In Re the MARRIAGE OF RICHARD RUSH, Petitioner and Respondent, and BARBARA RUSH, Respondent and Appellant are cited where maintenance modification is disputed. The court stated: "A provision for renegotiation of the terms of the settlement was included therein. Two of the children have been emancipated and are no longer in need of support. The youngest child, Richard Jr." That is the language to brief; the rest of the decision supplies the procedural posture.
In Re the MARRIAGE OF JEAN PURDY COOPER, Petitioner and Respondent, and LAWRENCE PETER COOPER, JR., Respondent and
…f the parties hereto are unable to agree upon the amount of alimony to be paid to the wife, if any, the wife reserves the right to present this matter to the court having jurisdiction for a determination of the amount of money to which she would be entitled for alimony. Lawrence Cooper paid the $4,200 pursuant to the above provision. In August, 1976, Mrs. Cooper filed a petitio…
Practitioners open In Re the MARRIAGE OF JEAN PURDY COOPER, Petitioner and Respondent, and LAWRENCE PETER COOPER, JR., Respondent and when Montana maintenance modification turns on the distinction in this sentence: "Lawrence Cooper paid the $4,200 pursuant to the above provision. In August, 1976, Mrs." Do not lift it out of the facts the court was deciding.
In RE THE MARRIAGE OF NANCY JOSEPHINE SCHARA, Petitioner/Appellant, and JOHN LEE SCHARA, Respondent/Respondent
…ization or the consent of the parties, a court cannot award alimony in a gross sum in lieu of a periodical allowance. Although our statutes do not make any specific provision for the award of lump sum maintenance payments, neither do they specifically prohibit such an award. Moreover, this Court has upheld the award of lump sum maintenance payments. See for example, In re the M…
Practitioners open In RE THE MARRIAGE OF NANCY JOSEPHINE SCHARA, Petitioner/Appellant, and JOHN LEE SCHARA, Respondent/Respondent when Montana maintenance modification turns on the distinction in this sentence: "Although our statutes do not make any specific provision for the award of lump sum maintenance payments, neither do they specifically prohibit such an award. Moreover, this Court has upheld the award of lump sum maintenance payments." Do not lift it out of the facts the court was deciding.
In Re the Marriage of GERALD E. ROWEN, and v. MARY HELEN ROWEN, and
In Re the Marriage of GERALD E. ROWEN, and v. MARY HELEN ROWEN, and, 199 Mont. 315 (1982)
…nthly maintenance award to the wife: “To pay to the Wife as alimony the sum of $750.00 per month commencing on September 1, 1976, and continuing each and every month thereafter, subject to the following contingencies: (1) This amount of $750 per month is based upon 13 percent of the Husband’s taxable income and if said income should rise or fall then the $750 shall be adjusted…
In Re the Marriage of GERALD E. ROWEN, and v. MARY HELEN ROWEN, and is worth reading on Montana maintenance modification because the court put the point in its own words: "To pay to the Wife as alimony the sum of $750." Use that passage as the starting point, then read the facts that precede it.
In Re the MARRIAGE OF MARGARET I. SHELTON, Petitioner and Respondent, and MICHAEL L. SHELTON, Respondent and Appellant
…articularly where the court made no finding on the issue of alimony. There was no abuse of discretion in the court’s detailed distribution of the property. In their nine-year marriage, respondent wife has made nonmonetary contributions as a homemaker. The issue of alimony and the lack of finding is irrelevant in that respondent did not petition for alimony. The court was simply…
In Re the MARRIAGE OF MARGARET I. SHELTON, Petitioner and Respondent, and MICHAEL L. SHELTON, Respondent and Appellant is worth reading on Montana maintenance modification because the court put the point in its own words: "There was no abuse of discretion in the court’s detailed distribution of the property. In their nine-year marriage, respondent wife has made nonmonetary contributions as a homemaker." Use that passage as the starting point, then read the facts that precede it.
In re the MARRIAGE OF SHERYLE JO RICHARDSON, and v. WAYNE LYNN RICHARDSON, and
In re the MARRIAGE OF SHERYLE JO RICHARDSON, and v. WAYNE LYNN RICHARDSON, and, 214 Mont. 353 (1985)
…perty. Compare Washington, 512 P.2d at 1302-1303, (finding “alimony” payments of $750 per month for nine years to be an inseparable part of a property settlement where neither the wife’s remarriage nor the husband’s death terminated the obligation undertaken by the husband in exchange for the wife’s interest in corporate assets). In response to appellant’s first contentions, we…
Montana opinions such as In re the MARRIAGE OF SHERYLE JO RICHARDSON, and v. WAYNE LYNN RICHARDSON, and are cited where maintenance modification is disputed. The court stated: "perty. Compare Washington, 512 P.2d at 1302-1303, (finding “alimony” payments of $750 per month for nine years to be an inseparable part of a property settlement where neither the wife’s remarriage nor the husband’s death terminated the obligation undertaken by the husband in exc" That is the language to brief; the rest of the decision supplies the procedural posture.
Practical checklist before you file
- Identify which type of maintenance your decree awards — the modification rules differ by type.
- Confirm the decree or agreement does not bar modification.
- Document the change with third-party records, not just testimony.
- For retirement motions: assemble pension statements, Social Security estimates, the divorce-era financial disclosures, and evidence of good faith.
- For cohabitation petitions: gather admissible evidence and expect a discovery fight and an evidentiary hearing.
- Keep paying until the new order is signed; calendar the effective-date rules under Mont. Code § 40-4-208(2)(b).
- Search LawDiver for recent Montana appellate decisions before filing.
Frequently asked questions
Can maintenance be modified in Montana?
Yes, in most cases. Changed circumstances so substantial and continuing as to make the terms unconscionable — a high bar; retirement at a reasonable age and disabling health changes are the most common successful grounds.
Does retirement end maintenance in Montana?
Retirement is a recognized ground in Montana — Mont. Code § 40-4-208(2)(b) governs how courts weigh it. Reaching normal retirement age carries more weight than early or voluntary retirement, and the recipient's own retirement readiness is considered.
Does my ex's cohabitation stop maintenance?
Death of either party or remarriage of the recipient ends maintenance unless the decree provides otherwise. You must petition the court and prove the statutory elements — the obligation does not end by operation of the new relationship alone until a judge so orders (unless Montana's statute makes termination automatic on remarriage).
Can maintenance be increased?
Yes, where the statute permits. Recipients who prove a material increase in need — often medical — can seek upward modification, subject to the payor's ability to pay.
Can Montana courts modify maintenance retroactively?
Modification reaches only installments after actual notice of the motion.
What if my maintenance was set by agreement?
Where the original decree contained no maintenance, § 40-4-208(2)(a) allows a modification petition only within two years of the decree. Agreements matter: read the incorporated terms before assuming a petition will be heard on ordinary changed-circumstances grounds.
Related guides
- How Montana calculates child support
- Montana maintenance / alimony guide
- How to modify maintenance in Montana
- How to modify child support in Montana
Disclaimer
This guide is general legal information about modifying maintenance in Montana, not legal advice. Statutes and case law change. Confirm the current text of Mont. Code § 40-4-208(2)(b) and consult a licensed Montana family-law attorney about your decree before filing or changing payments.