When child support ends in Idaho
The age support ends, the high school and disability rules, and what happens with orders from other states.
Checked against official sources: Oct 25, 2026.
Short answer
18. If the child is still in high school after turning 18, the court may order support to continue until the child leaves high school or turns 19, whichever comes first.
- Usual end age
- 18
- Latest age in the rule
- 19
- Law
- Idaho Code 32-706(1)-(2)
Idaho's rule on the end of support
18. If the child is still in high school after turning 18, the court may order support to continue until the child leaves high school or turns 19, whichever comes first.
Law: Idaho Code 32-706(1)-(2)
The guidelines do not cover support for education after high school (I.R.F.L.P. 120(a)).
When does support end? Check your situation
If your order is from another state
How long support lasts follows the law of the state that made the order, even if you move.
Law: 28 U.S.C. 1738B(h)(2)
A state must enforce another state's child support order. The state that made the order keeps the power to change it while a parent or the child still lives there.
Law: 28 U.S.C. 1738B(a), (d)
Arrears are still owed
Support that was due before it ended is still owed. Each unpaid payment became a judgment on the day it was due, and the agency can keep collecting it.
Law: 42 U.S.C. 666(a)(9)
In nearby states
- Oregon: 18, or up to 21 if the child qualifies as a Child Attending School
- Montana: 18, or graduation from high school if the child is still enrolled…
- Washington: Set in the order
- Nevada: 18, or if the child is still in high school, when the child…
Steps as support ends in Idaho
Read your order
Your order may name an end date or event.
Compare with the law
In Idaho: 18. If the child is still in high school after turning 18, the court may order support to continue until the child leaves high school or turns 19, whichever comes first.
Contact the agency
Ask the agency how and when payments stop: Idaho Department of Health and Welfare, Child Support Services (800-356-9868) · Apply online
Settle past-due support
Arrears can still be collected after support ends.
Talk to legal aid
Free help: Idaho Legal Aid Services and Idaho State Bar Lawyer Referral Service.
Free help in Idaho
Questions about when support ends in Idaho
At what age does child support stop in Idaho?
18. If the child is still in high school after turning 18, the court may order support to continue until the child leaves high school or turns 19, whichever comes first.
Is there support during the last year of high school in Idaho?
If the child is still in high school after turning 18, the court may order support to continue until the child leaves high school or turns 19, whichever comes first.
Are there exceptions to the end age in Idaho?
The guidelines do not cover support for education after high school (I.R.F.L.P. 120(a)).