Indiana calculates child support using the Income Shares Model, which estimates what parents would have spent on their children in an intact household and divides that amount based on each parent's proportionate share of combined weekly income. The Indiana Supreme Court provides a free online child support calculator Indiana parents can use at in.gov/courts to generate court-ready worksheets. Under IC 31-16-6-1, Indiana courts consider each parent's financial resources, the child's standard of living, and the child's physical, mental, and educational needs when setting support obligations.
Key Facts: Indiana Child Support
| Factor | Details |
|---|---|
| Calculation Model | Income Shares Model (IC 31-16-6-1) |
| Filing Fee | $132 to $185, depending on county (as of March 2026) |
| Residency Requirement | 6 months in Indiana, 3 months in filing county (IC 31-15-2-6) |
| Waiting Period | 60 days from date of filing |
| Grounds for Divorce | Irretrievable breakdown of the marriage (no-fault) |
| Property Division | Equitable distribution (presumptive 50/50 split) |
| Parenting Time Credit | Begins at 52 overnights per year (Guideline 6) |
| Modification Threshold | 20% deviation from guidelines or substantial change (IC 31-16-8-1) |
| Official Calculator | in.gov/courts/services/child-support-calculator |
How Indiana's Income Shares Model Works
Indiana determines child support by estimating what a family would have spent on their children if the parents lived together in one household, then dividing that cost between both parents based on their proportionate share of combined weekly adjusted income. Under IC 31-16-6-1, the court calculates each parent's weekly gross income, applies allowable deductions, combines the adjusted totals, and references the Guideline Schedules for Weekly Support Payments to find the base obligation for the number of children involved.
The Indiana child support calculator uses six primary inputs to generate a presumptive support amount. Both parents must report weekly gross income from all sources. The calculator then factors in health insurance premiums attributable to the children, work-related childcare costs, the number of overnight parenting time credits for the noncustodial parent, any existing child support obligations for other children, and the number of children shared between the parents. The resulting figure represents a weekly child support obligation that Indiana courts treat as a rebuttable presumption under the guidelines.
Indiana courts apply the child support guidelines to families with combined weekly adjusted income up to $10,000 per week ($520,000 per year). For families earning above that threshold, courts have discretion to set support based on the children's reasonable needs and the parents' ability to pay. The Income Shares Model was adopted by Indiana in 1989 and has been updated multiple times, most recently in 2024, to reflect current economic data on child-rearing costs.
Step-by-Step Guide to Using the Indiana Child Support Calculator
The Indiana Judicial Branch provides a free online child support calculator at in.gov/courts/services/child-support-calculator that generates court-ready Child Support Obligation Worksheets. Parents can complete the calculator in approximately 15 to 20 minutes if they have income documentation, insurance costs, and parenting time schedules available. The calculator produces downloadable forms accepted by all 92 Indiana county courts.
Step 1: Gather Required Financial Documents
Before using the Indiana child support calculator, both parents need the following documents:
- Last 3 to 6 months of pay stubs showing gross weekly income
- Most recent federal and state tax returns (2025 filing year)
- Documentation of self-employment income, including profit and loss statements
- Health insurance premium statements showing the cost of adding children to coverage
- Work-related childcare invoices or receipts (daycare, after-school care, summer programs)
- Records of any existing child support orders for other biological children
- A parenting time schedule showing the number of overnights each parent has per year
Step 2: Calculate Weekly Gross Income
Under Indiana Guideline 3A, weekly gross income includes income from any source: salaries, wages, commissions, bonuses, overtime, partnership distributions, dividends, severance pay, pensions, interest, trust income, annuities, capital gains, Social Security benefits, workers' compensation, unemployment benefits, disability benefits, gifts, inheritance, and alimony received from a different relationship. Indiana requires income reported on a weekly basis, so divide annual salary by 52, monthly salary by 4.33, or biweekly pay by 2.
For self-employed parents, Indiana Guideline 3A defines gross income as gross receipts minus ordinary and necessary business expenses. Tax return deductions may differ significantly from guideline-allowed deductions. Depreciation, home office deductions, and vehicle expenses claimed on tax returns are commonly added back to income for child support purposes. A self-employed parent earning $150,000 in gross receipts with $40,000 in legitimate business expenses would report $110,000 annually, or approximately $2,115 per week, as gross income for the child support worksheet.
Step 3: Apply Adjustments to Gross Income
Indiana allows specific deductions from gross income to arrive at weekly adjusted income. Allowable deductions include mandatory tax withholdings (federal, state, local, FICA), union dues required as a condition of employment, and existing child support orders for children from other relationships. Voluntary retirement contributions and health insurance premiums for the parent alone (not the children) are also deductible. A parent earning $1,200 per week gross with $300 in taxes, $25 in union dues, and $50 in prior child support would have a weekly adjusted income of $825.
Step 4: Determine the Basic Child Support Obligation
The calculator combines both parents' weekly adjusted incomes and references the Indiana Guideline Schedules for Weekly Support Payments. These schedules are organized by combined weekly income and number of children. For example, parents with a combined weekly adjusted income of $1,500 and two children would find a basic weekly obligation of approximately $327 according to the current guideline schedule. The obligation increases with income and the number of children, ranging from approximately $58 per week at the lowest income levels to over $2,000 per week at the $10,000 combined weekly income cap.
Step 5: Add Health Insurance and Childcare Costs
Under Indiana Guideline 7, the weekly cost of health insurance premiums attributable to the children is added to the basic child support obligation. Indiana isolates the child's portion of insurance costs by subtracting the "employee only" premium from the "employee plus child" premium. If employee-only coverage costs $150 per week and employee-plus-child costs $220 per week, the child's portion is $70 per week. Work-related childcare expenses, such as daycare costing $250 per week, are also added. These combined add-on costs are divided between parents proportionally based on each parent's share of combined adjusted income.
Step 6: Apply the Parenting Time Credit
Indiana Guideline 6 provides a parenting time credit to the noncustodial parent based on the number of annual overnight visits. The credit begins at 52 overnights per year (equivalent to alternate weekends) and increases proportionally up to equal parenting time at 182.5 overnights. A noncustodial parent with 52 overnights receives a modest credit, while a parent with 120 overnights receives a substantially larger credit that can reduce the child support obligation by 20% to 30%. The credit recognizes that the noncustodial parent incurs direct costs for housing, food, and activities during overnight parenting time. For families with multiple children on different parenting schedules, Indiana averages the overnight credits across all children.
Parenting Time Credit Table
| Annual Overnights | Credit Level | Approximate Impact on Support |
|---|---|---|
| Fewer than 52 | No credit | Full guideline amount applies |
| 52 (alternate weekends) | Minimum credit | Reduces obligation by approximately 5% to 8% |
| 79 (alternate weekends plus 4 weeks summer) | Moderate credit | Reduces obligation by approximately 10% to 15% |
| 105 (expanded schedule) | Significant credit | Reduces obligation by approximately 15% to 22% |
| 143 (near-equal time) | Substantial credit | Reduces obligation by approximately 25% to 35% |
| 182.5 (equal parenting time) | Maximum credit | Offset calculation applies; lower-income parent may receive support |
What Counts as Income for Indiana Child Support
Indiana Guideline 3A defines weekly gross income broadly to include virtually all sources of money received by a parent, whether earned or unearned. Wages, salaries, and commissions represent the most common income sources, but Indiana courts also count bonuses, overtime pay, partnership distributions, dividends, rental income, trust distributions, annuity payments, capital gains, Social Security benefits, workers' compensation, unemployment insurance, disability payments, gifts, and inheritances. Alimony or spousal maintenance received from a different relationship also counts as income under the guidelines.
Income that is excluded from the child support calculation includes means-tested public assistance benefits such as Temporary Assistance for Needy Families (TANF), Supplemental Nutrition Assistance Program (SNAP) benefits, and Supplemental Security Income (SSI). The Earned Income Tax Credit (EITC) is also excluded. Child support received for children from other relationships is not counted as income for calculating a new support obligation.
Imputed Income for Unemployed or Underemployed Parents
Indiana courts may impute income to a parent who is voluntarily unemployed or underemployed without just cause under Guideline 3A. The court evaluates the parent's employment history, education, professional qualifications, age, health, and local job market conditions to determine earning capacity. A parent with a college degree and 10 years of professional experience who voluntarily leaves a $75,000 per year position may have income imputed at that level ($1,442 per week) even if currently earning nothing. Indiana courts distinguish between voluntary unemployment (choosing not to work) and involuntary unemployment (laid off, disabled, or actively seeking work), with imputed income applied only in voluntary situations.
How to Modify an Indiana Child Support Order
Indiana allows modification of child support orders through two distinct legal pathways under IC 31-16-8-1. The first pathway requires a showing of changed circumstances so substantial and continuing as to make the existing order unreasonable. Common qualifying changes include job loss, significant income increase or decrease, changes in the child's medical needs, and changes in the parenting time schedule. The second pathway permits modification when the existing order differs by more than 20% from the amount that current guidelines would produce, provided at least 12 months have passed since the order was issued or last modified.
To file for modification, a parent submits a Petition to Modify Child Support in the court that issued the original order. The filing fee for a modification petition ranges from $132 to $157 depending on the county. As of March 2026, verify current fees with your local clerk of court. Both parents must complete updated child support worksheets using the Indiana child support calculator with current income figures. Indiana courts process uncontested modifications in approximately 30 to 60 days, while contested modifications requiring a hearing may take 3 to 6 months.
Indiana Child Support Deviation Factors
Indiana courts may deviate from the guideline amount when applying the standard calculation would be unjust or inappropriate. Under IC 31-16-6-1, the court considers the financial resources of both parents, the standard of living the child would have enjoyed in an intact household, the child's physical and mental condition, and the child's educational needs. A court that deviates from the guidelines must enter a written finding explaining the amount that the guidelines would have produced and the reason for the deviation.
Common deviation factors in Indiana include extraordinary medical expenses for a child with chronic illness or disability, travel costs for long-distance parenting time when parents live more than 100 miles apart, educational expenses such as private school tuition or tutoring, and the tax consequences of the support arrangement. Indiana courts also consider whether a parent has additional dependents in the household, though the guidelines already include a credit for prior-born children. Deviations typically range from 5% to 25% above or below the guideline amount, though extreme circumstances can produce larger deviations.
Enforcement of Indiana Child Support Orders
The Indiana Title IV-D Child Support Bureau enforces child support orders through income withholding, which is the primary enforcement mechanism under IC 31-16-15-2. Employers must withhold court-ordered child support from the paying parent's wages and remit payment to the Indiana State Central Collection Unit (INSCCU) within 3 business days. Indiana processes approximately 450,000 child support cases through the IV-D system, collecting over $900 million in child support annually according to the Indiana Department of Child Services.
Additional enforcement tools available to Indiana courts include interception of federal and state tax refunds, suspension of driver's licenses, suspension of professional and recreational licenses, passport denial for arrearages exceeding $2,500, contempt of court proceedings that can result in fines or jail time, and liens on real and personal property. A parent who falls behind by 3 or more months of payments is considered in arrears, and Indiana charges 1.5% annual interest on past-due child support balances. Parents experiencing genuine financial hardship should file for modification rather than simply stopping payments, as arrearages cannot be retroactively reduced for any period before the modification petition is filed.
Frequently Asked Questions
Where can I find the official Indiana child support calculator?
The Indiana Supreme Court provides a free child support calculator at in.gov/courts/services/child-support-calculator that generates court-ready worksheets. The calculator requires both parents' weekly gross income, health insurance costs for the children, work-related childcare expenses, and the number of annual overnight parenting time credits. Results include downloadable Child Support Obligation Worksheets accepted by all 92 Indiana county courts.
How does Indiana calculate child support for self-employed parents?
Indiana Guideline 3A defines self-employment income as gross receipts minus ordinary and necessary business expenses, which may differ from tax return deductions. Courts commonly add back depreciation, vehicle expenses, and home office deductions claimed on tax returns. A self-employed parent must provide profit and loss statements, bank records, and 2 to 3 years of tax returns. Courts may average income over multiple years to account for fluctuating self-employment earnings.
What is the minimum child support payment in Indiana?
Indiana does not set a statutory minimum child support amount, but the guideline schedules produce a minimum weekly obligation of approximately $58 for the lowest combined income levels. Courts may impute minimum wage income ($7.25 per hour, or $290 per week gross) to a parent who is voluntarily unemployed. At imputed minimum wage for one parent with typical combined income, the noncustodial parent's weekly obligation generally falls between $50 and $80 for one child.
How many overnights reduce child support in Indiana?
The parenting time credit under Indiana Guideline 6 begins at 52 overnights per year, equivalent to alternate weekend parenting time. Below 52 overnights, no credit applies and the full guideline amount is owed. At 52 overnights, the credit reduces the obligation by approximately 5% to 8%. The credit increases proportionally up to 182.5 overnights (equal parenting time), where an offset calculation determines whether either parent owes support based on the income differential.
Can Indiana child support be modified after the order is entered?
Yes. Under IC 31-16-8-1, Indiana permits modification through two pathways: (1) a substantial and continuing change in circumstances that makes the current order unreasonable, or (2) a 20% or greater deviation between the current order and the amount that current guidelines would produce, provided at least 12 months have passed since the last order. Common qualifying changes include job loss, significant income changes, changes in parenting time, and changes in the child's needs.
Does Indiana consider a new spouse's income for child support?
Indiana does not include a new spouse's income in the child support calculation under the guidelines. However, a new spouse's income may indirectly affect the calculation if the court finds that the parent's household expenses have decreased due to shared living costs, potentially freeing up more income for child support. A new spouse's income is more relevant in deviation arguments than in the standard guideline calculation.
How long does child support last in Indiana?
Child support in Indiana continues until the child turns 19 years old under IC 31-16-6-6, which is older than the 18-year-old threshold in most states. Support may terminate earlier if the child is emancipated, marries, joins the military, or is no longer under parental care. Indiana courts may also order educational support for college expenses for children up to age 21, which is separate from the base child support obligation and governed by IC 31-16-6-2.
What happens if a parent does not pay court-ordered child support in Indiana?
Indiana enforces child support through income withholding, tax refund interception, license suspension (driver's, professional, and recreational), passport denial for arrearages exceeding $2,500, property liens, and contempt of court proceedings that may result in fines or incarceration. The Indiana Title IV-D Child Support Bureau manages enforcement and collects over $900 million annually. Interest accrues at 1.5% per year on past-due balances, and arrearages cannot be retroactively forgiven for any period before a modification petition is filed.
Can parents agree to no child support in Indiana?
Indiana courts retain authority to review and approve any child support agreement between parents. While parents can agree to a specific amount, the court must find that the agreement serves the child's best interests and is not unconscionably low. A zero-support agreement is rarely approved unless both parents have substantially equal incomes and equal parenting time, and the court is satisfied that the child's needs are fully met. Any agreement below the guideline amount requires a written deviation finding by the court.
How does the Indiana child support calculator handle shared custody?
When both parents have 182.5 overnights per year (equal parenting time), the Indiana child support calculator applies an offset calculation rather than the standard formula. The calculator determines each parent's individual obligation based on their proportionate share of combined income, then offsets the two amounts. The parent with the higher income pays the difference between the two calculated obligations. For example, if Parent A owes $300 per week and Parent B owes $200 per week, Parent A pays $100 per week to Parent B under the offset calculation.