Indiana uses an income shares model combining both parents’ weekly gross incomes. A basic support obligation is determined from published guidelines. Each parent pays a pro rata share.
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Indiana calculates child support using the Income shares model established under Indiana Child Support Guidelines. This is a statutory formula that leaves limited room for judicial discretion on the base calculation amount, ensuring consistency and predictability for families across the state.
Basic obligation from Indiana guidelines schedule based on combined weekly gross income and number of children. Each parent's share = pro rata based on income percentage.
The calculation begins with determining each parent's net disposable income, which includes virtually all sources of income minus taxes, mandatory payroll deductions, and certain hardship deductions. The court then applies the statutory formula using the time each parent has primary physical responsibility for the children and the applicable income allocation brackets.
Beyond the base formula amount, Indianarequires additional contributions for mandatory add-on expenses. These typically include childcare costs necessary for the custodial parent's employment or education, uninsured healthcare expenses for the children, and in some cases, educational and travel costs. These add-ons are split between parents in proportion to their respective incomes.
Primary statute: Indiana Child Support Guidelines
Income shares model using weekly gross income.
Parenting time credits available for substantial overnights.
Health insurance and childcare added to basic obligation.
2024 update increased guideline schedule amounts.
Indiana is a "one pot" state — all property (including premarital) is subject to division.
Indiana does NOT award traditional alimony — only 3 narrow spousal maintenance situations.
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Residency Requirement
6 months state + 3 months county (IC 31-15-2-6)
Mandatory Waiting Period
60-day waiting period from filing (IC 31-15-2-10)
No-Fault Ground
Irretrievable breakdown
State Income Tax
Flat 3.05% state + approximately 1% local county tax
Indiana uses the Income shares model under Indiana Child Support Guidelines. Indiana uses an income shares model combining both parents’ weekly gross incomes. A basic support obligation is determined from published guidelines. Each parent pays a pro rata share.
Key factors include both parents' income, the number of children, custodial time share, mandatory add-on expenses (childcare, health insurance), and any applicable deductions. Income shares model using weekly gross income.
Yes. Either parent can request a modification if there has been a material change in circumstances, such as a significant change in income, custody arrangements, or the needs of the child. The court will recalculate support using the same statutory formula.
Basic obligation from Indiana guidelines schedule based on combined weekly gross income and number of children. Each parent's share = pro rata based on income percentage.
Get a personalized child support calculation based on Indiana's actual statutory formula.
Start My Free IndianaEstimate →This tool provides educational estimates based on Indiana family law and does not constitute legal advice. Child support calculations are approximations of the statutory formula and may differ from court-ordered amounts. Consult a licensed Indiana family law attorney before making decisions. Primary statute: Indiana Child Support Guidelines.