Idaho · STATE-SPECIFIC WORKFLOW

Idaho support worksheet.

Enter both parties’ countable income and the adjustments relevant to this state. The Idaho calculation uses the state’s income definition and the specific formula fields below.

Affidavit Verifying Income and applicable Idaho Child Support Worksheet. Idaho Rules of Family Law Procedure, Rule 120

Independent estimate: This is not an official court calculation, a certified court form, or legal advice. Courts may order more or less. A PDF can still be edited; this site does not certify authenticity or guarantee court acceptance.

Idaho financial worksheet

Complete Party A and Party B, then the state formula fields.

State for this worksheet

Changing state opens its separate worksheet page. Entries are not transferred between states.

IdahoLimited base calculation

Idaho worksheet output

Income reconciliation, calculation, sources, and PDF.

Ready when you are

Complete both parties’ financial accounting to review your state-specific worksheet.

Amounts are calculated in your browser. No account or upload is required. PDF/print is the only report format.

Idaho requirements and review scope

Affidavit Verifying Income and applicable Idaho Child Support Worksheet. Use Idaho Rules of Family Law Procedure, Rule 120 to determine the amounts counted for each party.
Wages, dividends, interest, business earnings, and other countable income are added separately for each party. Enter each dollar once; do not repeat business profit as an owner distribution.
General asset balances, loan balances, and household spending are not collected in this support-calculation workflow. Enter countable earnings from assets. A separate court financial affidavit may require additional disclosures.
Business and rental deductions must be expenses allowed for support, which can differ from tax-return deductions. Do not deduct personal living expenses as business expenses.
Uses Idaho Rules of Family Law Procedure Rule 120, amended June 3, 2025 and effective July 1, 2025.
Rule 120 bases the standard calculation on both parents’ annual Guidelines Income and applies marginal percentage rates by child count; the basic monthly obligation is divided between parents by Guidelines Income share.
This module implements the ordinary primary-parenting-time base calculation where the paying parent has 25% or less of annual overnights.
Shared physical custody over 25% overnights, split custody, tax-benefit adjustments, health insurance, child care, transportation, disability/retirement dependency benefits, other-child deductions and deviations require the full Idaho worksheet.
For combined Guidelines Income above $440,000 per year, support on the first $440,000 is calculated under Rule 120 and any additional support is court-specific.

The available formula is a limited base calculation. Full parity with every line of the official worksheet, custody arrangement, tax computation, credit, and discretionary adjustment has not been verified. Review the stated limitations and the official sources.

Read the Idaho guideline guide · Methodology and limitations · 50-state worksheet review