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Indiana Child Support Calculator

Updated for Indiana's 2024-IN-v1 guidelines · Last reviewed 2026-07-11

✓ Cross-checked against Indiana's official calculator/worksheet — see our verification methodology

Estimate only — not legal advice. This calculator provides a good-faith estimate based on Indiana's published child support guidelines as of 2026-07-11. Results may differ from a court order. For your official calculation, consult Indiana Child Support Rules and Guidelines (Indiana Supreme Court) or a family law attorney licensed in Indiana.

Calculation is client-side, income figures are never transmitted or stored.

How Indiana Child Support Is Calculated

  1. Determine each parent's weekly gross income (wages, self-employment, and other sources), then compute weekly adjusted income after allowed deductions.
  2. Combine both parents' weekly adjusted incomes to get combined weekly adjusted income.
  3. Look up the basic child support obligation from the official Guideline Schedules for Weekly Support Payments for that combined income and number of children (up to 8; above 8, courts use discretion).
  4. Each parent's share equals their income divided by the combined income, applied to the basic obligation.
  5. Above $9,200/week combined income, a fixed percentage of the excess (8.1% for 1 child up to 20.4% for 8 children) is added to the top-bracket amount.

Indiana Child Support Worksheet Walkthrough

Example: combined weekly adjusted income $700/week, 2 children, Parent A earns $400/wk (57% share), Parent B earns $300/wk (43% share) and has primary custody.

  1. Basic weekly obligation for $700 combined, 2 children: $184/week.
  2. Parent A's share: 57% × $184 ≈ $105/week guideline child support paid by Parent A.

How This Calculator Works — Formula & Constants

Source: Indiana Child Support Rules and Guidelines (Indiana Supreme Court) · Calcul déterministe — no AI, no arbitrary estimate.

Constants used

ConstantValueSource

Formula

combined_income = parentA_income + parentB_income
base_obligation = schedule_lookup(combined_income, children)
share_B = parentB_income / combined_income
total_obligation = base_obligation + childcare_cost + health_insurance_cost
obligation_B = total_obligation × share_B

Deterministic calculation based on Indiana's official guideline schedule table. Verify against Indiana's official calculator for a court-ready figure.

FAQ

How is child support calculated in Indiana?

Determine each parent's weekly gross income (wages, self-employment, and other sources), then compute weekly adjusted income after allowed deductions. Combine both parents' weekly adjusted incomes to get combined weekly adjusted income. Look up the basic child support obligation from the official Guideline Schedules for Weekly Support Payments for that combined income and number of children (up to 8; above 8, courts use discretion). Each parent's share equals their income divided by the combined income, applied to the basic obligation. Above $9,200/week combined income, a fixed percentage of the excess (8.1% for 1 child up to 20.4% for 8 children) is added to the top-bracket amount.

Is Indiana child support based on weekly or monthly income?

Weekly. Indiana's guidelines are built around weekly gross income and a weekly schedule of support amounts — not monthly figures like most other states. If your pay is monthly or biweekly, it needs to be converted to a weekly figure before applying the guideline schedule.

What happens if combined income is above $9,200/week?

Above $9,200/week in combined adjusted income, Indiana adds a fixed percentage of the excess directly on top of the top-bracket schedule amount — ranging from 8.1% for one child up to 20.4% for eight children. This is an automatic formula step, not a discretionary court decision, unlike the case-by-case approach some other states use above their income caps.

Does Indiana have a parenting time credit?

Indiana's official guidelines do include a Parenting Time Credit Table that reduces the paying parent's obligation starting around 52 overnights per year. This calculator does not yet model that adjustment — treat its estimate as the pre-credit guideline amount, and expect a court-ordered figure to run lower if the paying parent has substantial parenting time.

Methodology & Source

Formula model: income shares. Effective 2024-01-01, guideline version 2024-IN-v1, last reviewed 2026-07-11.

Official source: Indiana Child Support Rules and Guidelines (Indiana Supreme Court) (Ind. Child Support Guideline 3).

Above $9,200/week combined income, a fixed percentage of the excess is added to the table's top-bracket amount (this calculator applies it automatically). Indiana's Parenting Time Credit Table (starting at 52 overnights/year) is not modeled in this calculator — consult Indiana's official Child Support Calculator for a parenting-time-adjusted figure. This calculator shows the presumptive guideline amount only, not a court order.

Guideline figures transcribed from the primary source above and cross-checked against Indiana's official calculator/worksheet for multiple test scenarios — see our verification methodology.

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