HOW TO WIN A CHILD SUPPORT MODIFICATION CASE
How to win a child support modification case is really a question about preparation, because no lawyer or article can promise a result. In Colorado, the court can change support only when there has been a substantial and continuing change in circumstances, or the order has no provision for medical support, and under C.R.S. 14-10-122 a recalculation that moves support by less than 10 percent a month is deemed not to meet that test.
Like many Colorado Springs parents, you may be considering a way to modify a child support order. This article covers how to prepare and present a request to modify an existing order: the evidence, the forms, the worksheet, the timing and what the court looks for.
Modifying a child support order can be contentious, even if you have been through a divorce or separation before. Every situation is unique, so speak with an attorney if you have questions about your case.
TABLE OF CONTENTS
- Child Support Modification
- Requesting a Child Support Modification
- Frequently Asked Questions
- Talking With a Colorado Springs Child Support Lawyer
- Sources
CHILD SUPPORT MODIFICATION
Has there been a substantial and continuing change in either parent's circumstances since the order was put into place? If so, there are certain steps to take to put your request properly in front of the court.
- File a motion with the court that entered the original child support order. In El Paso and Teller counties that is usually the district court in the Fourth Judicial District, and the Judicial Branch says you can file through Colorado Courts E-Filing or with the court.
- The motion must explain your reason for the request and document what has changed since the original order. The Judicial Branch's motion form asks you to check the reasons, explain them, and state that the change would move support by at least 10 percent.
- You must give the other parent a copy of your motion. The form's certificate of service lists mail, hand delivery, e-filing and fax, and it tells the other parent that a response is due within 21 days of the service date. Under C.R.C.P. 121, section 1-15, the 21 days run from the filing of the motion unless the court allows more or less time, and a parent who does not respond risks having the motion treated as confessed.
There are several grounds on which a modification may be warranted when the change is substantial and continuing, including:
- A change in income for either parent, such as a pay increase or loss of a job
- A change in the number of overnights the children spend with each parent, which most people think of as the custody arrangement
- An increase or decrease in child care costs
- One parent now paying for child care expenses not previously taken into account
- Emancipation of one child when the order covers two or more children; in Colorado, child support generally ends at 19, not 18
- A change in the cost of the children's health insurance, or an order with no provision for medical support
Your request must explain what has changed since the original order was put into place. According to the Judicial Branch's instructions, added expenses such as a new house or a new car do not qualify.
The 10 Percent Test
The court applies the current guidelines in C.R.S. 14-10-115 to the parents' circumstances when the motion is filed. If the result differs from the current order by less than 10 percent a month, the change is deemed not substantial and continuing.
In practice, a difference of 10 percent or more is treated as presumptively substantial, and Colorado appellate decisions describe that presumption as rebuttable rather than automatic. The change must also be continuing, which the Judicial Branch describes as more than temporary.
The 10 percent is measured on the support amount, not on income, so run a worksheet before you file. Our guide to whether a Colorado child support order can be modified covers the legal standard in more depth, including whether the 2026 guideline changes alone justify a new calculation.
Well-Being of the Child
You may read that you must prove the new amount is in the child's best interests. That is the test for changing parenting time, not support: a support modification turns on whether the guideline amount has changed enough to meet the standard above.
The child's needs still matter. When setting support, C.R.S. 14-10-115(2)(b) directs the court to consider all relevant factors, including:
- The financial resources of the child
- The financial resources and needs of each parent
- The standard of living the child would have enjoyed had the marriage not been dissolved
- The child's physical and emotional condition and educational needs
These factors carry the most weight when a parent asks for an amount different from the guideline figure. The Colorado Supreme Court has explained that the guideline amount is a rebuttable presumption, and a court that departs from it must state the presumptive amount and its reasons (In re Marriage of Boettcher, 2019 CO 81).
REQUESTING A CHILD SUPPORT MODIFICATION
Document Changes in Your Circumstances
Highlight the substantial changes in your circumstances since the original order was put in place. This could be a change in income, a job loss or a change in the children's living arrangements.
If you cannot pay support because you lost your job or your income dropped, look for comparable work and document every attempt. A court that finds a parent voluntarily unemployed or underemployed calculates support on potential income, meaning what the parent could earn, so layoff notices, job applications and medical records help show the change was not your choice.
Report your income and expenses accurately, down to the penny. The guidelines are built on each parent's own income, and C.R.S. 14-10-115(5)(c) requires income to be verified with documentation of current and past earnings, such as pay stubs, employer statements or business receipts and expenses, supplemented with the most recent tax return.
Colorado Child Support Services asks for similar records when it reviews an order, and its list makes a useful checklist for a court motion:
- Pay statements for the last two to three months
- Tax returns, and for self-employed parents the last three years with all schedules and profit and loss statements since the last business return
- Proof of child care enrollment and payments
- Proof of health insurance coverage and its cost, and of extraordinary or ongoing medical expenses
- Other child support or maintenance orders and proof of payment, and records for other children in your home
- The current parenting time order or agreement
If the overnight schedule has changed, keep a calendar of the nights the children actually spend with each parent. If the schedule itself needs to change, the parenting time order may need a motion of its own; see our article on parenting time in Colorado.
File a Motion to Modify Child Support
The Colorado Judicial Branch's Change Child Support page lists the forms, and its instructions, JDF 1403i, describe two paths: a stipulation (JDF 1404) if both parents agree on the new amount, or a Motion to Modify Child Support (JDF 1403) if they do not. If you file a motion, it should include the following:
- Your signature, and a Sworn Financial Statement (JDF 1111). The current form is signed under penalty of perjury rather than notarized, and if it is not attached to the motion it is due within 42 days of service.
- Why you are asking for a new amount, and the new amount you are asking for, which JDF 1403 asks you to state if you attach a worksheet.
- A figure calculated with the support software linked from the Judicial Branch's Calculate Child Support and Maintenance page. Colorado Child Support Services notes that online calculators only give an estimate.
- A Support Worksheet (JDF 1821), revised March 1, 2026, showing your calculation. The instructions still name the old JDF 1820, which the Judicial Branch discontinued on March 2, 2026, so use JDF 1821; they also let you file the worksheet once you receive the other parent's financial information.
The Judicial Branch's List of Fees shows $105 for a motion to modify a decree or final order filed more than 60 days after the order, and a fee waiver may be available. Many parents file on their own, but we recommend having an attorney review the papers so the request clearly explains what has changed and why it meets the 10 percent test.
Why Timing Matters
File as soon as the change is clearly lasting. Under C.R.S. 14-10-122(1)(d), a modification should be effective as of the date the motion was filed unless that would cause undue hardship or substantial injustice, and it cannot reach back before filing except for a mutually agreed change of physical custody.
Until the court rules, the current order stays in force, and each unpaid payment becomes a support judgment when it is due. When physical care changes, the statute allows modification as of the date of the change, generally not more than five years before the motion; see retroactive child support in Colorado.
| Step | When | Notes |
|---|---|---|
| File the motion and pay the fee | Day one | A modification generally reaches back only to this date |
| Copy to the other parent, and to county child support services if involved | When you file | Include a certificate of service |
| Other parent's response (JDF 1315) | 21 days | JDF 1403 counts from the service date; C.R.C.P. 121, section 1-15, counts from filing unless the court sets another time |
| Mandatory disclosures, Sworn Financial Statement and Certificate of Compliance (JDF 1104) | Within 42 days after service | C.R.C.P. 16.2(e); only the financial statement and worksheets are filed with the court |
| Court review | Within 49 days of filing | C.R.C.P. 16.2(d); a ruling on the papers, a case management order, or a hearing |
| Mediation | Before a hearing in El Paso and Teller counties | A party may ask to waive it based on claims of abuse |
Child Support Modification Hearing
You may have to attend a hearing on your request, but a hearing is not automatic. JDF 1403i says the court reviews the motion within 49 days of filing and may rule on the papers, issue a case management order requiring the parents to exchange financial information, or set a hearing, possibly after mediation or a status conference.
In El Paso County, the post-decree case management order (FCF 400a) says the court will try to rule on the pleadings or schedule the matter within 49 days, and will likely require mediation, which the moving party schedules, before an evidentiary hearing. The Fourth Judicial District's mediation order requires a remote session of at least two hours before a hearing in domestic cases in El Paso and Teller counties.
Read the order in your own case, because divisions add their own requirements. One El Paso County division's post-decree order, for example, requires a pretrial statement at least seven days before the hearing and limits hearings to two hours, with equal time for each side, unless the court orders otherwise. If a hearing is scheduled, it is wise to consult an attorney.
At the hearing, the court applies the current guidelines to the parents' circumstances. Expect it to focus on each parent's actual income and earning ability, the documents behind each figure, each parent's overnights, and the costs of child care and health insurance.
Child Support Orders
The purpose of child support is to meet the child's basic needs, such as food, shelter, clothing and education. In El Paso and Teller counties, support orders in divorce, legal separation and parental responsibilities cases are entered in district court by a judge or magistrate, not by a county court judge, and county child support services can also review orders in cases open with them.
Once an order is in place, the parent ordered to pay must keep paying the full amount until it is changed. If that parent falls behind, Colorado Child Support Services lists enforcement tools that include income assignment, federal tax refund offsets, bank liens, credit reporting and license suspensions; our article on Colorado child support orders covers payment and enforcement.
A court sets support after reviewing both parents' incomes under the guidelines. In some cases, one parent feels the other is not paying a fair share, and that parent may file a motion asking the court to change the support terms.
Child Support Order Calculations
It's essential to understand how child support is calculated in Colorado. The guidelines use a formula that considers both parents' incomes, the number of overnights the children spend with each parent, child care and health insurance costs, and other factors, such as an adjustment for a parent who supports children from another relationship.
The formula changed on March 1, 2026, when the child support provisions of HB25-1159 began to apply. The schedule now reaches $40,000 in combined monthly adjusted gross income, every overnight now counts toward a parenting time credit (the old shared-care adjustment applied only when each parent had more than 92 overnights a year), and a $10 minimum order applies when the paying parent's monthly adjusted gross income is $650 or less, unless shared parenting time produces a lower amount.
Once you understand the calculation, you can begin to build your case for why a modification is necessary. If your income has changed significantly since the original order, you may be able to show that the current amount no longer fits the guidelines.
Similarly, if the children now spend more nights with you than before, you may be able to show that the original order no longer reflects the actual arrangement. Our overview of child support in Colorado explains each part of the worksheet.
If you seek a child support modification in Colorado, keep these points in mind. Understanding how support is calculated and building a well-documented case for why a modification is necessary gives the court what it needs to decide on the facts.
FREQUENTLY ASKED QUESTIONS
Do I Need a Lawyer to Modify Child Support in Colorado?
No. Parents can file the Judicial Branch's forms on their own, by stipulation if both agree or by motion if they do not, but a parent who files without a lawyer is bound by the same rules and procedures as an attorney. A lawyer can check the worksheet, the evidence and the deadlines, and no one can promise how the court will rule.
What Counts as a Big Enough Change to Modify Child Support in Colorado?
The change must be substantial and continuing, unless the order has no provision for medical support, which is a separate ground. If recalculating support under the current guidelines changes it by less than 10 percent a month, the change is deemed not substantial and continuing. A change of 10 percent or more is generally treated as presumptively substantial, though that can be rebutted, and a temporary change is unlikely to qualify.
What Forms Do I Need to Modify Child Support in Colorado?
Usually a Motion to Modify Child Support (JDF 1403) or, if both parents agree, a stipulation (JDF 1404), plus a Sworn Financial Statement (JDF 1111) and a Support Worksheet (JDF 1821). In a contested motion, each parent also completes mandatory disclosures and a Certificate of Compliance (JDF 1104) within 42 days after service.
How Long Does a Child Support Modification Take in Colorado?
There is no fixed time. The court reviews a motion within 49 days of filing and may rule on the papers or set further steps, and in El Paso and Teller counties mediation is required before a hearing; a review through county child support services can take up to six months.
Does the Sworn Financial Statement Have to Be Notarized?
No. The current JDF 1111 is signed under penalty of perjury, and the form warns that the court may punish statements made with intent to defraud or mislead it.
Can a Modification Go Back to When My Circumstances Changed?
Generally no. A modification is usually effective from the date the motion was filed, so file promptly; the main exception is a change of physical care, which can reach back to the date of the change, generally up to five years.
TALKING WITH A COLORADO SPRINGS CHILD SUPPORT LAWYER
Colorado child support law is complex, and a modification turns on the numbers, the documents and the timing. Whether you want to increase or decrease support, a Colorado Springs child support lawyer can check your worksheet and evidence and help you file before more months pass at the old amount.
Moran, Allen & Associates Family Law Attorneys works with parents in El Paso County and Teller County. Call (719) 447-0762 in Colorado Springs or (719) 686-7554 in Woodland Park, or schedule a free consultation; related changes to parenting time or maintenance are covered on our post-decree modifications page.
For more reading, browse more articles on child support.
This article is general information about Colorado law as of October 2026 and is not legal advice, and it does not predict or promise any result. Laws, forms and local court orders change, so speak with a licensed Colorado attorney about your own situation.
SOURCES
- C.R.S. 14-10-122, Modification and Termination of Support
- C.R.S. 14-10-115, Child Support Guidelines
- HB25-1159, Child Support Commission Recommendations (Colorado General Assembly)
- HB25-1159, enrolled act text
- HB26-1217, enrolled text (amends C.R.S. 14-10-115 "as they will become effective March 1, 2026")
- Colorado Supreme Court, In re Marriage of Boettcher, 2019 CO 81
- Colorado Judicial Branch, Change Child Support
- Colorado Judicial Branch, JDF 1403i How to Modify Child Support (revised July 13, 2026)
- Colorado Judicial Branch, JDF 1403 Motion to Modify Child Support
- Colorado Judicial Branch, JDF 1111 Sworn Financial Statement
- Colorado Judicial Branch, JDF 1104 Certificate of Compliance with Mandatory Financial Disclosures
- Colorado Judicial Branch, JDF 1821 Support Worksheet (revised March 1, 2026)
- Colorado Judicial Branch, March 2026 Form Blotter (JDF 1820 discontinued, JDF 1821 updated)
- Colorado Judicial Branch, Calculate Child Support and Maintenance
- Colorado Judicial Branch, List of Fees
- El Paso County District Court, Domestic Relations Case Management Order, Post-Decree (FCF 400a)
- El Paso County District Court, Division 9 Post-Decree Case Management Order (November 13, 2025)
- Fourth Judicial District, Mediation and ADR Order (FCF 300A)
- Colorado Child Support Services, Changing an Order
- Colorado Child Support Services, Review and Adjustment Request Packet (with Income and Expense Declaration, CSE102)
- Colorado Child Support Services, Calculating Payments
- Colorado Child Support Services, Frequently Asked Questions