What Is a Divorce Decree Modification and When Do You Need One?
Your divorce decree is a court order — but it's not necessarily permanent. Utah law allows you to modify custody, support, and alimony orders when life changes significantly. Here's what you can change, what you can't, and how the process works.
7 min read·Updated July 2026·Utah-specific
Quick answer
A divorce decree modification is a court-approved change to an existing divorce order. In Utah, you can modify child custody, parent-time, child support, and alimony when there has been a substantial, material change in circumstances. Property division is permanent and generally cannot be modified. If both parties agree, modifications can be filed without a court hearing.
What can be modified in Utah?
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Child custody (legal and physical)
Requires substantial material change in circumstances and a best-interest-of-child analysis.
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Parent-time schedule
Can be modified if circumstances have changed or the current schedule is not being followed.
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Child support
Utah allows modification if income changes by 15% or more, or every 3 years regardless of change.
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Alimony amount or duration
Modifiable unless the decree says otherwise. Terminates automatically on recipient's remarriage.
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Health insurance provisions
Can be modified if a spouse loses coverage or gains better coverage through employment.
What cannot be modified?
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Property division
Once a divorce decree is final, the property division is permanent. It cannot be reopened except in cases of fraud or mistake.
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Marital debt allocation
Debt assignments in the decree are final. You may have recourse against a spouse who fails to pay, but the allocation itself does not change.
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Non-modifiable alimony
Some decrees specifically state alimony is non-modifiable. Courts will honor this agreement.
Common triggers for a modification
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Job loss or major income change
Either parent losing a job, getting a significant raise, or becoming disabled triggers eligibility to modify child support and potentially alimony.
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Relocation of a parent
A parent planning to move out of Utah or more than 150 miles away must petition to modify the parenting plan. The court evaluates the move's impact on the child.
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Remarriage or cohabitation
Alimony automatically terminates in Utah when the receiving spouse remarries. Cohabitation in a marriage-like relationship may also support termination.
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Child's changing needs or preferences
As children age, custody arrangements may need updating. Utah courts give increasing weight to a child's preference as they approach 14–16 years old.
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Serious illness or disability
A significant health change in either parent or a child can support modification of support, custody, or parent-time.
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Safety concerns
Evidence of abuse, neglect, substance abuse, or endangerment is grounds for emergency modification and can result in expedited hearings.
How the modification process works in Utah
Agreed (stipulated) modification
If both parents or spouses agree to the change, you file a Stipulated Motion to Modify with your original county district court. A judge reviews and signs without requiring a hearing. This is the fastest, cheapest path — typically 4–8 weeks and $325 filing fee.
Contested modification
If you can't agree, one party files a Petition to Modify and serves the other. The court schedules a hearing. Both parties present evidence of the changed circumstances. A judge issues a ruling. This process takes 6–18 months and typically requires attorney representation.
Emergency (ex parte) modification
If a child is in immediate danger, you can file for an emergency protective order and temporary custody modification without notifying the other party first. Courts treat these with urgency. You must demonstrate immediate harm, not just inconvenience.
Frequently asked questions
What is a divorce decree modification in Utah?
A divorce decree modification is a court-approved change to an existing divorce order. In Utah, you can modify child custody, parent-time, child support, and alimony orders when there has been a substantial material change in circumstances since the original decree was entered.
What counts as a substantial change in circumstances in Utah?
Utah courts recognize many triggering events including: a significant change in either parent's income, relocation of a parent, remarriage, a child's changing needs or preferences (especially teens), job loss, serious illness, or evidence of abuse or neglect. The change must be material — meaning it meaningfully affects the terms of the original order.
Can I modify child support in Utah without going to court?
Utah allows stipulated modifications — meaning both parents agree to the change — which can be filed without a formal hearing. If both parties sign a modified order and it is approved by a judge, no court appearance is needed. divvi's modification wizard helps you prepare stipulated modification documents.
How long does a modification take in Utah?
Agreed (stipulated) modifications typically take 4–8 weeks once filed. Contested modifications that require a hearing can take 6–18 months depending on the court's docket.
Can I modify alimony in Utah?
Yes, but only if the original decree does not say alimony is non-modifiable. Utah courts will consider modifying alimony when there has been a substantial change in either party's financial circumstances. Alimony automatically terminates upon the recipient's remarriage or cohabitation.
Need to modify your decree?
divvi's modification wizard helps you prepare all the documents for a stipulated modification — free, fast, and formatted to Utah court standards.