Divorce Agreement Modifications

A divorce or family law judgment reflects the circumstances when it was entered, but jobs, finances, parenting schedules, and children’s needs can change. Illinois law allows certain family court orders to be modified when you meet the legal requirements for a modification.

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Understanding a “Substantial Change in Circumstances”

Many requests to modify child support or maintenance require the person seeking the modification to demonstrate a substantial change in circumstances. Illinois law doesn’t treat every change as sufficient, and the specific requirements depend on the type of order being modified.

Major changes in your finances, work, parenting schedule, or your child’s needs may be enough to revisit an existing court order. The court will look at what has changed, how significant the change is, and whether it is likely to continue.

An attorney can help you understand whether your situation may support a modification and what steps may make sense next.

Common Changes That May Support a Modification

  • Significant increase or decrease in income
  • Voluntary job loss or reduction in work hours
  • A significant change in a child’s needs
  • Changes in childcare, medical, or other child-related expenses
  • A parent’s relocation or schedule change
  • Retirement or other significant financial changes

What Happens When You Request a Modification?

Review the Existing Order

Understanding exactly what the current judgment, parenting plan, or support order requires.

Identify Changes

Determine what circumstances have changed since the existing order and whether those changes satisfy Illinois requirements for modification.

Gather Supporting Evidence

Relevant evidence can include income records, employment info, parenting schedules, communications, medical expenses, and school information.

File the Appropriate Request

The party seeking a change generally must file a motion or petition asking the court to modify the existing order.

Negotiate When Possible 

Some post-decree disputes can be resolved through negotiations rather than a contested hearing.

Present the Issue to the Court

If the parties cannot reach an agreement, the court may hear evidence and make a determination.

Agreed vs. Contested Modification

Parents and former spouses can often agree to change an existing arrangement. However, simply following an informal agreement may create problems later if the existing court order says something different.

For parenting matters, Illinois law allows courts to modify parenting plans based on parental agreements unless the court finds the modification is not in the child’s best interest.

Formalizing an agreed modification gives both parties a clear, updated court order and reduces uncertainty about future obligations.

When the parties cannot agree, the person requesting the modification generally must demonstrate to the court that the applicable legal requirements have been met.

Agreed or Contested Modification?

  • Do both parties agree that the current order needs to change?
  • Do you agree on the exact new terms?
  • Is one party asking for a change that the other opposes?
  • Are there disagreements about finances, parenting time, or support?
  • Can the modification be resolved through negotiation?
  • Will a judge need to decide whether to approve the requested change?

Modification vs. Enforcement

1

Parenting Schedules

Currenting parents schedule no longer works because of work, school or other ongoing changes, a modification may be appropriate.
2

Financial Circumstances

Significant change in income, employment, or financial needs may support a request to modify.
3

Child's Needs

New educational, medical, childcare or development needs may make an existing order less practical.
4

Parenting Time

Current parenting schedule works but one parent is not following it, enforcement may be a better option.
5

Unpaid Support or Maintenance

If support is owed under an existing order but not paid, enforcement may be necessary.
6

Failure to Follow Court Orders

Enforcement may be needed when a party is not complying with other requirements contained in the judgement.
7

Both Issues

Some cases involve both an outdated order and a failure to follow it, modification and enforcement may need to be addressed together.