Child Support Modification - Preparation Worksheet - Idaho
DO NOT FILE THIS PACKET. Use it to prepare the current Idaho Court
Assistance Office forms for changing child support in an existing case. The
existing order remains operative unless and until the court enters a
modification judgment.
IDAHO CHILD-SUPPORT MODIFICATION PREPARATION PACKET
1. Case and Form Control
Rule 201(c) keeps a modification in the original family law action. Preserve
the original petitioner and respondent designations even if the respondent is
now asking for modification.
| Item | Verified information | Source reviewed | Checked on |
|---|---|---|---|
| Original court and judicial district | [________________________________] | Current docket / operative order | [__/__/____] |
| County | [________________________________] | Current docket / operative order | [__/__/____] |
| Case number | [________________________________] | Current docket / operative order | [__/__/____] |
| Original petitioner | [________________________________] | Operative caption | [__/__/____] |
| Original respondent | [________________________________] | Operative caption | [__/__/____] |
| Party requesting modification | [________________________________] | Client / party record | [__/__/____] |
| Date and title of current support order | [________________________________] | Filed order | [__/__/____] |
| Current monthly support and due date | [________________________________] | Filed order / payment record | [__/__/____] |
| Current medical, child-care, and tax terms | [________________________________] | Filed order | [__/__/____] |
| Department of Health and Welfare a party? | ☐ No ☐ Yes — [________________________________] | Docket / pleadings | [__/__/____] |
| Interstate or registered order involved? | ☐ No ☐ Yes — counsel review: [________________________________] | Docket / order | [__/__/____] |
| Correct current official form set | [________________________________] | Court Assistance Office page | [__/__/____] |
2. Idaho Modification Standard
Idaho Code § 32-709(1) permits modification only for installments accruing
after the motion for modification and only upon a substantial and material
change of circumstances. Rule 201(c) requires the supporting changes to be
pleaded with particularity.
Rule 120(d) says that a change in the guideline amount may constitute the
required change and gives newly addressed health insurance as an example. It
does not create a universal 15% income-change threshold. Calculate the current
guideline amount and describe the actual facts rather than relying on a
percentage label.
| Claimed change | Date it occurred | Prior fact or amount | Current fact or amount | Evidence | Why substantial and material |
|---|---|---|---|---|---|
| Income or earning circumstances | [__/__/____] | [________________________________] | [________________________________] | [________________________________] | [________________________________] |
| Parenting-time arrangement | [__/__/____] | [________________________________] | [________________________________] | [________________________________] | [________________________________] |
| Health-insurance availability or cost | [__/__/____] | [________________________________] | [________________________________] | [________________________________] | [________________________________] |
| Work-related child care | [__/__/____] | [________________________________] | [________________________________] | [________________________________] | [________________________________] |
| Child's needs or other circumstance | [__/__/____] | [________________________________] | [________________________________] | [________________________________] | [________________________________] |
☐ The pleading states dates, amounts, events, and record sources rather than conclusions alone.
☐ The requested effective date does not reach installments that accrued before the modification motion.
3. Current Official Filing Set
The Court Assistance Office currently lists these materials for a child-support
modification. Confirm the page again immediately before filing because form
numbers and revision dates can change.
| Purpose | Current listed form or instruction | Prepared / attached |
|---|---|---|
| Filing instructions | Instructions — Filing a Petition for Modification | ☐ |
| Completion instructions | Instructions — Completing a Petition to Modify an Order, Judgment or Decree | ☐ |
| Case data | Family Law Case Information Sheet | ☐ |
| Pleading | CAO M 1-1, Petition to Modify an Order, Judgment or Decree | ☐ |
| Initial service | Summons with Orders | ☐ |
| Income statement | Affidavit Verifying Income | ☐ |
| Standard calculation | Standard Child Support Worksheet | ☐ Not applicable ☐ Attached |
| Shared or split calculation | Shared or Split Custody Worksheet | ☐ Not applicable ☐ Attached |
| Contested-case exchange | Mandatory Child Support Disclosures and Certificate of Service | ☐ Not yet due ☐ Completed |
| Agreed resolution | Stipulation for Entry of Order, Judgment, or Decree | ☐ Not applicable ☐ Attached |
| Proposed disposition | Judgment of Modification | ☐ |
| Support-system record | Child Support Order Transmittal Form | ☐ |
☐ The current official PDF or editable form was downloaded from the official page, not copied from this packet.
4. Current Rule 120 Calculation Record
Use the current Affidavit Verifying Income and the applicable current worksheet.
Section 32-706(5) makes the guideline amount presumptive and requires a
written or on-record finding when the court departs because application of the
guidelines would be unjust or inappropriate.
| Calculation item | Parent / party A | Parent / party B | Proof |
|---|---|---|---|
| Current gross income by source | $[____________] | $[____________] | [________________________________] |
| Employment benefits or potential income issue | $[____________] | $[____________] | [________________________________] |
| Rule 120 income adjustments | $[____________] | $[____________] | [________________________________] |
| Final Guidelines Income | $[____________] | $[____________] | [________________________________] |
| Guidelines Income percentage | [____]% | [____]% | Completed worksheet |
| Work-related child-care cost paid | $[____________] | $[____________] | [________________________________] |
| Child health-insurance premium paid | $[____________] | $[____________] | [________________________________] |
| Uncovered health-care cost record | $[____________] | $[____________] | [________________________________] |
| Parenting-time overnights used | [____________] | [____________] | Calendar / order |
| Tax-benefit allocation in current order | [________________________________] | [________________________________] | Filed order |
| Result | Amount or entry |
|---|---|
| Current ordered basic support | $[____________] |
| Current Rule 120 worksheet amount | $[____________] |
| Dollar difference | $[____________] |
| Percentage difference, if useful as evidence | [____]% |
| Proposed monthly support | $[____________] |
| Proposed effective date | [__/__/____] |
☐ Later-born or later-adopted children were screened under the modification rule before being included as an adjustment.
☐ Any requested deviation identifies the ordinary guideline amount and the case-specific facts supporting departure.
5. Petition Fact Organizer
Transfer verified facts to the current official Petition to Modify. Do not file
this organizer.
-
I am [FULL NAME], the original ☐ Petitioner ☐ Respondent in Case No. [NUMBER].
-
The court entered the current [ORDER / JUDGMENT / DECREE] on [DATE]. Its child-support terms are [EXACT TERMS].
-
Since that order, the following substantial and material changes occurred: [FACTS, DATES, AMOUNTS, AND SOURCES].
-
The requested child-support amount is $[____] per month under the attached current Rule 120 worksheet.
-
The requested amount should be paid by [NAME] beginning [DATE], subject to § 32-709(1).
-
The requested health-insurance terms are [________________________________].
-
The requested allocation of health-insurance premiums and uncovered health-care costs is [________________________________].
-
The requested allocation of qualifying work-related child-care costs is [________________________________].
-
The requested tax-benefit terms are [________________________________].
-
All provisions of the existing order not expressly modified should remain in effect.
☐ Every factual statement is supported by personal knowledge or an identified record.
☐ The signer will use the exact declaration, signature, and attachment instructions in the current official form.
6. Requested-Judgment Worksheet
Do not submit this worksheet as a judgment. Transfer only reviewed terms to the
current official Judgment of Modification.
| Judgment term | Requested text or amount | Calculation / authority |
|---|---|---|
| Basic support amount and frequency | [________________________________] | [________________________________] |
| Effective date | [________________________________] | Idaho Code § 32-709(1) / accrual analysis |
| Payment and receipting instructions | [________________________________] | Current official form / agency record |
| Income-withholding treatment | [________________________________] | Existing order / current official judgment form |
| Health-insurance responsibility | [________________________________] | Rule 120 worksheet / coverage proof |
| Uncovered health-care expenses | [________________________________] | Rule 120 / proposed allocation |
| Work-related child care | [________________________________] | Rule 120 / expense proof |
| Tax benefits | [________________________________] | Rule 120 / tax review |
| Multiple-child continuation amounts | [________________________________] | Current continued-support worksheet |
| Prior terms remaining effective | [________________________________] | Existing order |
7. Filing, Service, and Disclosure Record
Unless the parties file a qualifying stipulation, Rule 201(c) requires service
of the petition on the responding party with a summons and any notice, form, or
order issued at filing. Do not serve only the party's former attorney.
| Event | Date and time | Method / recipient | Receipt or proof |
|---|---|---|---|
| Petition and case-information sheet filed | [________________________________] | [________________________________] | [________________________________] |
| Summons and court-issued papers obtained | [________________________________] | [________________________________] | [________________________________] |
| Petition packet served | [________________________________] | [________________________________] | [________________________________] |
| Proof or acknowledgment of service filed | [________________________________] | [________________________________] | [________________________________] |
| Responsive pleading filed | [________________________________] | [________________________________] | [________________________________] |
| Rule 401 disclosure deadline | [________________________________] | 35 days after responsive pleading, unless altered | [________________________________] |
| Mandatory disclosures exchanged | [________________________________] | [________________________________] | [________________________________] |
| Disclosure certificate filed | [________________________________] | [________________________________] | [________________________________] |
Rule 401 currently requires the Affidavit Verifying Income, the applicable
worksheet, three completed years of specified tax and income records,
year-to-date income information, and proof of listed support, insurance,
child-care, education, and special-circumstance expenses. The Court Assistance
Office instructs parties to exchange the disclosures and file only the
Certificate of Service, not the disclosure packet itself.
☐ Any written agreement or court order changing the 35-day disclosure timing is attached or identified.
☐ Protected identifiers and confidential records were handled under current court rules and filing instructions.
8. Final Review
☐ The original petitioner/respondent labels and case number match the operative case.
☐ The current official forms and their revision dates were checked on the filing date.
☐ The petition pleads the asserted changes with particularity.
☐ No universal 15% threshold, three-year review entitlement, or automatic modification rule was inserted.
☐ The current Rule 120 affidavit, worksheet, schedules, and supporting records are complete.
☐ The requested effective date complies with Idaho Code § 32-709(1).
☐ Service, disclosure, default, stipulation, and judgment routes were checked for this case's actual posture.
☐ Idaho counsel reviewed interstate jurisdiction, registration, agency-party, arrears, withholding, fee, enforcement, and local-practice issues before filing.
Sources and References
About this template
- Last updated
- August 23, 2026
- Citations checked
- August 23, 2026
- Jurisdiction
- Idaho
- Category
- Family Law
Legal authority
- Idaho Code § 32-709(1)
- Idaho Code § 32-706(5)
- Idaho Rules of Family Law Procedure 120
- Idaho Rules of Family Law Procedure 201(c)
- Idaho Rules of Family Law Procedure 401
Family law covers the paperwork that shapes divorce, custody, child support, adoption, guardianship, and other family matters. These filings are emotional and high-stakes, and they also have to meet strict procedural rules for service, financial disclosure, and parenting plans. Clean, accurate paperwork keeps the focus on getting a workable outcome for the family instead of getting derailed by technical problems that delay hearings or force amended filings.
Not legal advice
This template is provided for informational purposes. We recommend having an attorney review any legal document before signing, especially for high-value or complex matters.
Checked against the law it cites
A reviewer verified this template's legal citations against the official source on August 23, 2026.
Idaho Code § 32-709(1) (checked August 23, 2026): "The provisions of any decree respecting maintenance or support may be modified only as to installments accruing subsequent to the motion for modification and only upon a showing of a substantial and material change of circumstances."
Idaho Code § 32-706(5) (checked August 23, 2026): "There shall be a rebuttable presumption that the amount of the award which would result from the application of the guidelines is the amount of child support to be awarded, unless evidence is presented in a particular case that indicates that an application of the guidelines would be unjust or inappropriate."
Idaho Rules of Family Law Procedure 120 (checked August 23, 2026): "When the amount of child support under these Guidelines changes, it may constitute a substantial and material change of circumstances for granting a motion for modification for child support amount. In a proceeding to modify an existing award, children who are born or adopted after the entry of the existing order will not be considered. A basic child support calculation does not cover work-related child care costs. For each child support order, the court must consider health insurance coverage. In all cases, the Affidavit Verifying Income, Child Support Worksheet, and the Continued Child Support Worksheet will be provided to the court."
Idaho Rules of Family Law Procedure 201(c) (checked August 23, 2026): "A petition to modify will be in a form similar to an original petition. All allegations of substantial and material changes in circumstances supporting a petition to modify a term of a prior judgment or decree must be stated with particularity. Unless the parties have filed a stipulation for entry of a judgment, a petition to modify must be served upon all parties entitled to service along with a (1) summons and (2) any notice, form, or order issued by the court at the time of filing of the petition to modify."
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