Child Support Calculator
Explore an illustrative child-support scenario from two incomes and entered costs. This unvalidated model does not calculate a legal obligation.
Assumptions and limits
Enter both monthly gross incomes, other children, insurance and childcare, then select 1–5+ children and custody. Each other child reduces that parent’s income by 7.5%, capped at 30%. Adjusted incomes determine the unrounded allocation ratio.
Basic percentages for 1/2/3/4/5+ children are 20/28/32/35/38%. Parent 1 basic share uses the real income ratio. Add the entered parent-1 insurance cost in full and childcare times that ratio; subtract a credit of 0% sole, 40% shared or 20% primary of the parent-1 basic share, then floor at zero.
Insurance here is the entered child-related cost attributed to parent 1 and added to this scenario payment. It is not an insurance reimbursement rule. No jurisdiction, year, official coefficient validation or court amount is supplied.
Adjusted incomes, basic share, childcare and custody credit post half-up to cents; allocation ratios are not rounded for calculation. Display shares are complementary to 100%. Annual amount is exactly 12 × posted monthly amount.
Two monthly incomes of $1000, 1 child, no costs or other children: $200/month and $2400/year in the sole scenario; shared gives $120, primary $160. These are synthetic model examples.
Switch shared back to sole to remove the custody credit. Clear insurance and childcare to remove their additions. Keep the coefficients visible when discussing a scenario.
Amounts are calculated in this page and are not saved or sent by this calculator. Surrounding site services are separate.
Parent 1 (Non-Custodial Parent)
Parent 2 (Custodial Parent)
Income Breakdown
Adjustments
Assumptions and limits
| Combined Income | 1 Child | 2 Children | 3 Children |
|---|---|---|---|
| $5,000 / Monthly | $1,000 | $1,400 | $1,600 |
| $10,000 / Monthly | $2,000 | $2,800 | $3,200 |
| $15,000 / Monthly | $3,000 | $4,200 | $4,800 |
| $20,000 / Monthly | $4,000 | $5,600 | $6,400 |
Insurance here is the entered child-related cost attributed to parent 1 and added to this scenario payment. It is not an insurance reimbursement rule. No jurisdiction, year, official coefficient validation or court amount is supplied.
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About Child Support Calculator
Explore an illustrative child-support scenario from two incomes and entered costs. This unvalidated model does not calculate a legal obligation.
Two monthly incomes of $1000, 1 child, no costs or other children: $200/month and $2400/year in the sole scenario; shared gives $120, primary $160. These are synthetic model examples.
No. The 40% shared and 20% primary credits are unvalidated scenario assumptions applied only to the basic share. Childcare and the entered insurance add-on remain separate. Use the appropriate official local process for a jurisdiction-specific obligation.
Use Cases
How to use
Enter both monthly gross incomes, other children, insurance and childcare, then select 1–5+ children and custody. Each other child reduces that parent’s income by 7.5%, capped at 30%. Adjusted incomes determine the unrounded allocation ratio.
Basic percentages for 1/2/3/4/5+ children are 20/28/32/35/38%. Parent 1 basic share uses the real income ratio. Add the entered parent-1 insurance cost in full and childcare times that ratio; subtract a credit of 0% sole, 40% shared or 20% primary of the parent-1 basic share, then floor at zero.
Pro Tips
- Switch shared back to sole to remove the custody credit. Clear insurance and childcare to remove their additions. Keep the coefficients visible when discussing a scenario.
Troubleshooting
Why are the two displayed income shares complementary?
They come from the adjusted incomes. One displayed share is rounded to two decimals and the other is its complement to 100%; the actual calculation uses the full income ratio. Two zero incomes have no defined allocation and produce no result.
Does shared custody determine my actual payment?
No. The 40% shared and 20% primary credits are unvalidated scenario assumptions applied only to the basic share. Childcare and the entered insurance add-on remain separate. Use the appropriate official local process for a jurisdiction-specific obligation.
Frequently Asked Questions
They come from the adjusted incomes. One displayed share is rounded to two decimals and the other is its complement to 100%; the actual calculation uses the full income ratio. Two zero incomes have no defined allocation and produce no result.
No. The 40% shared and 20% primary credits are unvalidated scenario assumptions applied only to the basic share. Childcare and the entered insurance add-on remain separate. Use the appropriate official local process for a jurisdiction-specific obligation.