Child Support Modification

COLORADO CHILD SUPPORT MODIFICATION PREPARATION WORKSHEET

NOT AN OFFICIAL COURT FORM

Do not file this worksheet. Use the current forms and instructions on the
Colorado Judicial Branch's Change Child Support page:

• Change Child Support
• JDF 1403 i — How to Modify Child Support

Download fresh forms each time. Complete this worksheet to organize the facts
and documents before transferring approved information to the official forms.

1. Existing-Order and Route Gate

• Court and county: [COURT / COUNTY]
• Case number: [NUMBER]
• Petitioner named in original case: [NAME]
• Co-Petitioner/Respondent named in original case: [NAME]
• Date of current support order: [DATE]
• Current monthly support amount: $[AMOUNT]
• Person ordered to pay: [NAME]
• Payment frequency and method: [DETAILS]
• Current income assignment: [DETAILS]
• Child Support Services involved: [COUNTY / STATE / NO]
• Public assistance involved: [DETAILS / NO]
• Parent or child in another state or country: [DETAILS / NO]

Keep the same Petitioner and Co-Petitioner/Respondent titles used in the
original case, regardless of who starts the post-decree request.

Select the official route:

• ☐ JDF 1404 Stipulation: both parties agree that modification is needed
  and agree on the new amount.

• ☐ JDF 1403 Motion: the parties do not agree on the change.

• ☐ JDF 1408 or another route: the last or only child may be emancipated,
  termination rather than recalculation is requested, or counsel identified a
  different controlling procedure.

• ☐ Interstate, parentage, public-assistance, or agency facts require a
  separate jurisdiction and notice review before filing.

Reviewer route and explanation: [DETAILS]

2. Modification-Ground Screening

Select every ground supported by current facts:

• ☐ A substantial and continuing change would increase or decrease the
  guideline amount by at least 10 percent.

• ☐ The current order lacks medical or dental support provisions addressed by
  C.R.S. § 14-10-122(1)(a).

• ☐ A court-ordered, voluntary, or mutually agreed physical-care change may
  require analysis under C.R.S. § 14-10-122(5).

• ☐ A child's emancipation affects an order covering two or more children.

• ☐ Other current statutory ground: [GROUND / AUTHORITY].

Do not define “continuing” as a fixed six-month period; the current statute and
Judicial Branch instructions do not create that universal duration. Do not rely
on ordinary new expenses, such as a new car or house, as a modification ground.

Facts supporting the selected ground: [DETAILS]

3. Ten-Percent Calculation

Use the current Colorado Judicial Branch child-support software and guideline
forms. An estimate is a screening tool, not an order.

• Current monthly amount: $[A]
• Estimated new monthly amount: $[B]
• Difference: $[B MINUS A]
• Percentage change: [ABSOLUTE DIFFERENCE ÷ CURRENT AMOUNT × 100] = [PERCENT]
• Calculation date: [DATE]
• Current software or worksheet source: [URL / VERSION]

• Inputs still missing: [DETAILS / NONE]

• ☐ Estimated change is at least 10 percent.

• ☐ Estimated change is below 10 percent; reviewer will analyze whether a
  different statutory ground applies or filing is unsupported.

4. Child and Parenting-Time Information

Changed schedule or physical-care facts: [DETAILS]

Date any physical-care change began: [DATE]

Written agreement or court order concerning that change: [FILE / NONE]

5. Current Financial Information

Each party completes their own current JDF 1111 Sworn Financial Statement.
Use JDF 1111SS only when applicable.

Unemployment, underemployment, disability, incarceration, business-control,
overtime, benefit, or disputed-income issue: [DETAILS]

6. Change-in-Circumstances Narrative

Use dated facts in JDF 1403 or JDF 1404. Avoid commercial-contract language,
default clauses, promises of sanctions, and unsupported conclusions.

1. Current order and amount: [DATE / AMOUNT / TERMS].
2. Event that changed: [FACTS / DATE].
3. Why the change is expected to continue: [FACTS].

4. Updated income, parenting time, child-care, insurance, medical, or other
   guideline inputs: [FACTS].

5. Estimated guideline result and percentage change: [MATH / SOURCE].

6. Medical or dental support missing from current order, if applicable:
   [DETAILS].

7. Requested new amount and starting-date position: [DETAILS].

8. Contrary or uncertain facts: [DETAILS].

7. Forms and Documents

Use the current instructions to select the actual packet.

Starting Form

• ☐ JDF 1403 — Motion to Modify Child Support
• ☐ JDF 1404 — Stipulation Regarding Child Support Modification
• ☐ JDF 1315 — Response to Motion, if responding

Financial and Calculation Forms

• ☐ JDF 1104 — Certificate of Compliance with Mandatory Financial Disclosure
• ☐ JDF 1111 — Sworn Financial Statement
• ☐ JDF 1111SS — Supporting Schedules for Assets, if applicable
• ☐ JDF 1821 — Support Worksheet generated through current software
• ☐ JDF 1313 — Certificate of Service for the Child Support Worksheet

Proposed Orders, If Required Locally

• ☐ JDF 1405 — Order re Modification of Child Support
• ☐ JDF 1117 — Support Order

For JDF 1405 and JDF 1117, fill out only the case caption when the current
instructions or local self-help center requires the proposed forms; the judicial
officer completes the order.

8. Disclosure Calendar

The current JDF 1403 i measures the financial-disclosure deadlines from
service of the motion, not merely its filing date.

• Motion service date: [DATE]
• Forty-two-day date: [DATE / CALCULATION]
• JDF 1104 provided to other party and filed: [DATE]
• Mandatory disclosure documents provided: [DATE / METHOD]
• JDF 1111 provided and filed: [DATE]
• Missing disclosure and explanation: [DETAILS / NONE]

Do not use the old 14-day instruction. Confirm the current form, court order,
and any case-specific deadline before relying on this calendar.

9. Child Support Worksheet

• Current Judicial Branch software used: [NAME / URL / DATE]
• Worksheet generated: [DATE]
• Worksheet amount: $[AMOUNT]
• JDF 1313 service record: [DATE / METHOD]
• Filed with starting papers: ☐ Yes ☐ No
• If not, information still needed from other party: [DETAILS]
• Planned completion and filing after information arrives: [DATE / STEP]

The July 2026 modification instructions still refer to retired JDF 1820, but
the Judicial Branch's official March 2026 Forms Blotter discontinued JDF 1820
and JDF 1822 and made JDF 1821 the current Support Worksheet. Use JDF 1821 and
the current Support Calculator. The modification instructions allow the motion
to be filed without the worksheet when the other party's financial information
is unavailable, but require the worksheet after that information is received.

10. Filing and Notice

• Filing court: [DISTRICT COURT / COUNTY]
• Filing method: [PAPER / E-FILING]
• Filing date: [DATE]
• Fee or approved waiver: [DETAILS]
• Current address update filed, if needed: [DATE / N/A]

Provide filed papers as directed by the current instructions:

Complete the certificate-of-service portion of the official form using actual
facts. Do not paste a generic service certificate into the filing.

11. Court Review and Possible Hearing

• Forty-nine-day review date from post-decree filing: [DATE]
• Court order or case-management notice received: [DATE / FILE]
• Matter decided on documents: [STATUS]
• Hearing, mediation, or status conference set: [DATE / DETAILS]
• Additional financial exchange ordered: [DETAILS]
• Deadline for response or supplemental filing: [DATE / SOURCE]

The current instructions say the court reviews a post-decree filing within 49
days and may decide on the documents, issue a case-management order, require
mediation or a status conference, or set a hearing. Follow the actual notice.

12. Effective-Date and Income-Assignment Review

Modification generally concerns installments after filing. C.R.S.
§ 14-10-122(1)(d) says a granted modification should be effective as of the
filing date unless the court finds undue hardship or substantial injustice, and
it contains a separate physical-care exception. Record a position; do not state
the result as automatic.

• Filing date: [DATE]
• Requested effective date: [DATE]
• Statutory basis and exception analysis: [DETAILS]
• Hardship or injustice issue: [DETAILS / NONE]
• Physical-care-change issue under subsection (5): [DETAILS / NONE]
• Existing income assignment: [DETAILS]
• Updated income-assignment step if support changes: [DETAILS]

13. Final Review

• Existing order and correct post-decree case confirmed: ☐ Yes ☐ No
• Motion, stipulation, termination, or other route selected: ☐ Yes ☐ No
• Current 10-percent calculation completed: ☐ Yes ☐ No
• Every child and parenting-time input reviewed: ☐ Yes ☐ No
• Current financial records collected: ☐ Yes ☐ No
• Official forms downloaded fresh: ☐ Yes ☐ No
• Forty-two-day disclosure calendar confirmed: ☐ Yes ☐ No
• Worksheet and JDF 1313 plan confirmed: ☐ Yes ☐ No
• All parties and Child Support Services recipients identified: ☐ Yes ☐ No
• Forty-nine-day review and hearing tracking set: ☐ Yes ☐ No
• Effective-date and income-assignment issues reviewed: ☐ Yes ☐ No

Reviewer: [NAME / ROLE]

Date: [DATE]

Notes: [DETAILS]

Official Sources

• 2025 Colorado Revised Statutes, Title 14
• Colorado Judicial Branch Change Child Support
• JDF 1403 i — How to Modify Child Support, revised July 13, 2026
• Colorado Judicial Branch Forms Blotter, March 2026