HowMuchChildSupport

Child support for 3 children in Illinois

Illinois guidelines effective March 20, 2026. Illinois overview

For 3 children, with Parent A earning $60,000 and Parent B $40,000, Illinois's guideline amount is $1,360 a month (Parent A pays Parent B).

This is the guideline amount, not a court order.

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Guideline child support

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Child support for 3 children in Illinois by income

Monthly guideline amount for 3 children by Parent A's and Parent B's yearly income; the children live mostly with Parent B (Parent A has 52 overnights a year).
Parent A incomeParent B $0Parent B $30,000Parent B $50,000Parent B $80,000
$20,000$594$590$563$485
$25,000$742$726$690$588
$30,000$869$847$784$668
$35,000$997$970$870$750
$40,000$1,145$1,084$954$844
$45,000$1,272$1,185$1,044$933
$50,000$1,400$1,263$1,141$1,021
$55,000$1,514$1,340$1,212$1,120
$60,000$1,619$1,397$1,275$1,206
$65,000$1,736$1,478$1,340$1,280
$70,000$1,856$1,571$1,417$1,348
$75,000$1,931$1,613$1,489$1,406
$80,000$2,006$1,652$1,560$1,468
$90,000$2,102$1,759$1,714$1,593
$100,000$2,170$1,908$1,851$1,709
$120,000$2,353$2,199$2,070$1,903
$150,000$2,714$2,493$2,332$2,300
$200,000$3,157$3,027$2,933$2,846
$250,000$3,675$3,510$3,495$3,460

Parenting time and child support for 3 children

Monthly guideline amount for 3 children by Parent A's income and overnights a year with Parent A; Parent B earns $40,000. "B→A" means Parent B pays.
Parent A income0 nights52 nights104 nights128 nights182 nights
$20,000$571$571$571$571$384 B→A
$25,000$713$713$713$713$276 B→A
$30,000$825$825$825$825$178 B→A
$35,000$930$930$930$930$85 B→A
$40,000$1,028$1,028$1,028$1,028$16
$45,000$1,103$1,103$1,103$1,103$68
$50,000$1,169$1,169$1,169$1,169$147
$55,000$1,270$1,270$1,270$1,270$233
$60,000$1,360$1,360$1,360$1,360$309
$65,000$1,411$1,411$1,411$1,411$370
$70,000$1,468$1,468$1,468$1,468$432
$75,000$1,522$1,522$1,522$1,522$486
$80,000$1,582$1,582$1,582$1,582$541
$90,000$1,735$1,735$1,735$1,735$663
$100,000$1,886$1,886$1,886$1,886$784
$120,000$2,125$2,125$2,125$2,125$990
$150,000$2,408$2,408$2,408$2,408$1,245
$200,000$2,982$2,982$2,982$2,982$1,705
$250,000$3,493$3,493$3,493$3,493$2,114

How the number of children changes the amount in Illinois

With Parent A earning $60,000 and Parent B $40,000, the guideline amount for 3 children is $1,360 a month, about 1.79 times the $761 for one child. Support rises with each child, but by less than the first child's amount, because the guidelines reflect how households share costs among children.

Illinois uses the income shares model: the schedule gives the support for the parents' combined net income, and the paying parent pays their percentage share.

Frequently asked questions

How much is child support for 3 children in Illinois on $50,000?

If Parent A earns $50,000 a year, Parent B earns $40,000 and the children live mostly with Parent B, Illinois's guideline amount is about $1,169 a month (Parent A pays Parent B).

How much is child support for 3 children in Illinois on $100,000?

If Parent A earns $100,000 a year, Parent B earns $40,000 and the children live mostly with Parent B, the guideline amount is about $1,886 a month (Parent A pays Parent B).

How much more is child support for 3 children than for one child in Illinois?

At $60,000 (Parent B $40,000), the amount for 3 children is about 1.79 times the amount for one child: $1,360 against $761 a month.

Does equal parenting time change child support for 3 children in Illinois?

With about equal parenting time and the same incomes ($60,000 and $40,000), the guideline amount is about $309 a month (Parent A pays Parent B), against $1,360 when Parent A has 52 overnights a year. When each parent has at least 146 overnights a year, the basic obligation is multiplied by one and a half, shared by income and offset by each parent's time.

Official sources and verification

Guidelines effective March 20, 2026. Verified against the official Illinois sources on October 6, 2026. How we calculate →