Illinois Child Support Calculator
*
Number of Overnights with Custodial Parent*
Parent with majority physical custody: must be between 183 and 365.
Common Child Custody Arrangements:
  • 50/50: 183
  • 60/40: 219
  • 70/30: 274
  • 80/20: 292
  • 4-3 schedule: 208
CP
NCP
Gross Monthly Income
Custodial Parent Gross Monthly Income
(Parent with majority physical custody)
$
Non Custodial Parent Gross Monthly Income*
$
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Custodial Parent
Non Custodial Parent
Estimated Child Support Obligation
Custodial Parent's Obligation:
$
Non Custodial Parent's Obligation:
$