1 Child
~17%
of income
Data updated May 2026
2022 guideline data Income Shares model OCSE FY2023 source
Idaho Child Support Guidelines
Idaho runs the Income Shares model, with no statutory income cap and a parenting-time credit - see the base percentages and OCSE FY2023 enforcement figures below.
By PlainChildSupport Editorial · · Source: Idaho Revised Statutes · Last updated: 2022
Income Shares
2 Children
~24%
of income
3 Children
~29%
of income
4 Children
~33%
of income
Income Cap
None
uncapped
Child Support Snapshot: Idaho
Idaho operates under the Income Shares model, one of 43 U.S. states using this framework. For a parent supporting one child, the base guideline applies roughly 17% of income, scaling to 24% for two children and 29% for three. That places Idaho at rank #32 of 51 states by single-child base percentage. Unlike capped states, there is no statutory income ceiling, the formula applies to the full reported income before deductions. Median household income here runs $58,915/yr.
Idaho ranks #4 of 51 reporting states on OCSE collection efficiency and #39 by caseload volume, see the case counts, collection rate, and paternity-establishment figures in the enforcement breakdown below.
Idaho allows a parenting time adjustment, which can materially reduce the base obligation when the non-custodial parent exercises substantial overnight time. A percentage figure alone doesn't determine the dollar amount, see how Idaho compares to other guideline models →
How Idaho Calculates Child Support
Idaho uses the Income Shares model. Both parents' incomes are combined, the total obligation is looked up from a schedule, then split proportionally based on each parent's income share. Its one-child base rate is in line with the national middle range.
Income Shares model.
Guideline Details
| Parameter | Value |
|---|---|
| Formula Model | Income Shares |
| Income Floor | None |
| Income Ceiling | Uncapped |
| Parenting Time Adjustment | Available |
| Median Household Income | $58,915/yr |
| Single-Child Base | 17% (rank #32 of 51) |
Disclaimer: This page provides estimates for informational purposes only. Actual child support amounts may differ based on judicial discretion, deviation factors, and current Idaho guidelines. Consult a family law attorney in Idaho for legal advice.
Idaho Child Support Enforcement
75,000
Active Cases
$180M
Annual Collections
66.8%
Collection Rate
82.3%
Cases with Orders
96.1%
Paternity Established
Idaho vs national average (51 reporting states)
Collection rate 66.8%
national
66.8% of assessed support collected; national average 60.6%.
Paternity established 96.1%
national
96.1% of cases have legal parentage established; national average 94.9%.
Cases with orders 82.3%
82.3% of the caseload has a formal child support order in place.
Source: OCSE FY2023 preliminary report OCSE FY2023 preliminary report
Interactive Calculator for Idaho
The Idaho interactive calculator is being finalized. Use the official state calculator below for your estimate.
Official ID CalculatorOther Income Shares States
Frequently Asked Questions
What percentage of income goes to child support in Idaho?
In Idaho, approximate guideline percentages are 17% for 1 child, 24% for 2 children, 29% for 3 children, and 33% for 4 children. Actual amounts depend on the income level and any applicable deviation factors.
Does parenting time affect child support in Idaho?
Yes. Idaho provides a parenting time adjustment when the non-custodial parent exercises significant overnight time (typically 40% or more). This credit reduces the base child support obligation proportionally.
Every figure on PlainChildSupport is rendered directly from official state guidelines and federal enforcement data, no number is typed in by an editor. This page draws directly on official state guidelines and federal enforcement data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.
Read our methodology - how this data is sourced, computed, and verified.
Data sources
Data sourced from official federal and state child-support agency records (NCSL, state statutes, ACS). See our methodology for details. Retrieved and formatted by PlainChildSupport Editorial
