Indiana Child Support Calculator
Estimate the guideline amount under Indiana's Income Shares model (Indiana Child Support Rules and Guidelines). Based on combined income and each parent's share — free, instant, no data stored.
Guideline Estimate
Indiana uses the Income Shares model under the Indiana Child Support Rules and Guidelines. This simplified estimate applies the percentage to combined monthly gross income and allocates by each parent's share. Actual orders consider work-related childcare, health insurance, and parenting time credits, and are calculated using the state's official worksheet.
How Indiana calculates child support
Indiana uses the Income Shares model under the Indiana Child Support Rules and Guidelines. The child is entitled to the same proportion of parental income they would have received if the parents lived together.
- Add both parents' gross monthly incomes to get combined monthly income.
- Apply the weekly-income percentage for the number of children (20% for 1, up to 36% for 5+).
- Allocate the total obligation between the parents by each parent's share of income.
Indiana guideline percentages (approximate)
| Children | Guideline percentage |
|---|---|
| 1 | 20% |
| 2 | 26% |
| 3 | 30% |
| 4 | 33% |
| 5 or more | 36% |
Adjustments in the full calculation
The official Indiana worksheet adjusts the base obligation for work-related childcare costs, the child's health insurance premiums, parenting time credits (overnights with the non-custodial parent), and support for children from other relationships. This calculator shows the simplified income-share estimate only.
Frequently asked questions
How long does child support last in Indiana? Generally until the child turns 19, unless the court orders otherwise or the child is emancipated earlier.
Does parenting time change the amount? Yes. Parenting time credits reduce the non-custodial parent's obligation based on the number of overnights. The official worksheet applies these credits; this simplified estimate does not.
Can the amount be modified? Yes — upon a showing of changed circumstances so substantial and continuing as to make the terms unreasonable.