Indiana Child Support Calculator
2026Estimate child support payments in Indiana. Calculate expected IN child support obligations based on income, custody arrangement, and number of children using Indiana guidelines.
Written and reviewed by Konstantin Iakovlev · Methodology · Updated
Total Annual Obligation
$37,600.00
Parent 1 Share
$27,072.00
Parent 2 Share
$12,032.00
Support Calculation
| Combined Gross Income | $100,000.00 |
| Base Obligation Rate (2 children) | 28% |
| Base Support Obligation | $28,000.00 |
| + Child Care Costs (annual) | $6,000.00 |
| + Health Insurance (annual) | $3,600.00 |
| Total Obligation | $37,600.00 |
Each Parent's Share
| Parent 1 Income Share | 60.0% |
| Parent 1 Annual Obligation | $27,072.00 |
| Parent 1 Monthly | $2,256.00 |
| Parent 2 Income Share | 40.0% |
| Parent 2 Annual Obligation | $12,032.00 |
| Parent 2 Monthly | $1,002.67 |
| Per Child (annual) | $18,800.00 |
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
How is child support calculated in Indiana?
Indiana applies the Income Shares model. Both parents' gross incomes are combined and run through a guideline schedule that yields a basic monthly obligation. Each parent's share of that obligation is prorated by their percentage of combined income.
The calculation typically adjusts for: (1) work-related childcare, (2) the child's portion of health-insurance premiums, (3) extraordinary medical expenses, and (4) parenting time when overnights cross a state-defined threshold (e.g., 20%–40% depending on jurisdiction). Pre-existing support orders for other children, alimony paid, and mandatory retirement contributions also reduce gross income before the formula applies.
Guideline figures are presumptive — judges may deviate upward or downward when applying them would be unjust given the child's needs, the parents' resources, or other relevant factors. Indiana courts retain final discretion. Always confirm the current guideline tables and worksheet with the Indiana child support agency or family court.
Indiana child support: model, official calculator, enforcement agency
- Guidelines model
- Income Shares
- Official calculator
- Indiana Child Support Guidelines worksheet (online calculator)
Indiana uses the Income Shares model under Indiana Child Support Rules and Guidelines (most recent revision 2024). Indiana is unique in requiring use of the "Child Support Obligation Worksheet" which incorporates a parenting-time credit table (Postsecondary Education Worksheet for college expenses). The Department of Child Services administers approximately 290,000 cases; the Indiana Centralized Child Support Disbursement Unit (CCDU) processes payments.
Indiana Key Rates & Limits (2026)
| State Income Tax | 3.05% (flat) |
| State Sales Tax | 7% |
| Minimum Wage | $7.25/hr |
Indiana child support — frequently asked questions
How is child support calculated?
Most states use the income shares model, which estimates what parents would have spent on the child if they lived together, then divides that based on each parent's income share. Factors include gross income, number of children, custody arrangement, and healthcare/childcare costs.
Can child support be modified?
Yes. Either parent can request a modification if there is a substantial change in circumstances, such as a significant income change (increase or decrease), job loss, change in custody arrangement, or changes in the child's needs.
At what age does child support end?
In most states, child support ends at age 18 or high school graduation (whichever comes later). Some states extend support to age 19-21 or through college. Court orders may specify different end dates based on individual circumstances.