Indiana Child Support — Calculator, Laws & Guide (2026)

Understanding Indiana child support laws helps both custodial and non-custodial parents know their rights and obligations. This comprehensive Indiana child support guide covers how payments are calculated, what income counts, when support can be modified, and how orders are enforced. Whether you are going through a divorce, seeking a modification, or dealing with non-payment, this guide explains Indiana’s child support system in plain language.

Verified against Indiana statutes and federal OCSE guidelines as of April 2026.

Indiana Child Support Overview

Indiana uses the income shares model for calculating child support. This model is based on the principle that children should receive the same proportion of parental income they would have received if the family were intact. Both parents’ incomes are combined, and the support obligation is divided proportionally.

Both parents’ weekly gross incomes are determined, adjusted for prior support obligations, then combined. Each parent’s percentage share of the combined income is calculated. The combined weekly adjusted income is looked up in the Guideline Schedules for Weekly Support Payments based on number of children. Each parent’s percentage share is multiplied by the total obligation from the table. Credits are applied for parenting time (based on overnights), work-related childcare costs, and the child’s share of health insurance premiums. The non-custodial parent’s share after credits becomes the weekly child support obligation. Indiana calculates support on a weekly basis, not monthly.

How Indiana Calculates Child Support

The Indiana child support calculation considers multiple factors:

1. Determine each parent’s gross income — wages, salary, commissions, bonuses, self-employment income, investment income, and other sources.
2. Calculate combined parental income — add both parents’ adjusted gross incomes together.
3. Apply the guideline schedule — Indiana’s guidelines provide a base support amount based on combined income and number of children.
4. Prorate between parents — each parent’s share is proportional to their percentage of the combined income.
5. Add healthcare and childcare costs — these are added to the base amount and divided proportionally.
6. Apply adjustments — parenting time credits, other child obligations, and special circumstances may adjust the final amount.

Online calculator: Use our child support estimator below to calculate your estimated obligation.

What Counts as Income in Indiana

Weekly Gross Income from all sources. Included: salaries, wages, tips, commissions, overtime, bonuses, periodic partnership distributions, self-employment income (gross receipts minus ordinary and necessary business expenses), rental income, royalties, interest, dividends, trust income, pensions, annuities, Social Security benefits, disability benefits (workers’ comp, VA benefits), unemployment compensation, and value of in-kind benefits (free housing, company car, reimbursed meals). Excluded: means-tested public assistance (TANF, SSI, SNAP/food stamps) and survivor benefits received by or for other children in either parent’s home. Defined in Guideline 3A of the Indiana Child Support Rules.

Imputed income: YES. If a court finds a parent is voluntarily unemployed or underemployed without just cause, child support is calculated based on potential income determined by evaluating: employment and earnings history, occupational qualifications, educational attainment, literacy, age and health, criminal record or other employment barriers, and prevailing job opportunities and earnings levels in the community. If no other evidence of potential earnings exists, federal minimum wage is used as a floor.

Deviation factors: Courts may deviate if applying guidelines would be unreasonable, unjust, or inappropriate. Written findings required. Factors include: high parenting time credit, debilitating mental illness of a parent, caring for a disabled child, incarcerated parent, debilitating physical health issue of a parent or family member, natural disaster, extraordinary medical expenses, support obligations to elderly parents, and significant travel expenses to exercise parenting time. Agreement of the parties alone is NOT sufficient cause for deviation.

Healthcare & Childcare in Indiana Child Support

Health insurance: Under Guideline 7, the court shall order one or both parents to provide health insurance when accessible at reasonable cost. Insurance may be public (Medicaid, CHIP) or private (employer, ACA marketplace). Rebuttable presumption that insurance is available at reasonable cost; rebutted if the child’s portion of premiums exceeds 5% of the parents’ combined gross incomes. The child’s share of health insurance premium is factored into the child support worksheet as a controlled expense. Effective January 1, 2024, Indiana abolished the prior 6% rule for uninsured medical expenses — both parents now share uninsured healthcare expenses (co-pays, deductibles, uncovered medical/dental/vision/orthodontia) in proportion to their respective income shares.

Childcare costs: Work-related childcare expenses are included in the child support calculation as a controlled expense on the Child Support Obligation Worksheet. The parent who pays childcare has that expense deducted from their share of the obligation. Childcare costs must be reasonable and should not exceed the level required to provide quality care. Limited to work-related childcare necessary for the parent to maintain employment.

When Does Indiana Child Support End?

In Indiana, child support generally ends when the child reaches 19. Under IC 31-16-6-6, child support terminates at age 19 (changed from 21 effective July 1, 2012). Early emancipation before 19 if the child: joins the U.S. armed services, marries, is no longer under care or control of either parent, or is at least 18 and has not attended school for 4 months and is capable of self-support. Support extends beyond 19 if the child is incapacitated (physical or mental disability) or still attending secondary school (high school). Arrearages survive emancipation.. However, support may continue or end earlier based on:

• The child graduates from high school (if still a minor)
• The child becomes emancipated (marriage, military service, self-supporting)
• The child has special needs requiring ongoing support
• College support: YES, discretionary. Under IC 31-16-6-2, Indiana courts may order parents to contribute to post-secondary undergraduate educational expenses. This is discretionary, not mandatory. The petition must be filed before the child turns 19. Limited to undergraduate education only — does not extend to graduate or professional school. The court considers: the child’s aptitude and ability, the child’s reasonable ability to contribute (work, loans, financial aid), and each parent’s ability to meet expenses. Covered expenses may include tuition, books, fees, supplies, student activity fees, and room and board (if not living with a parent). If educational support is ordered, the court shall reduce other child support for that child to avoid duplication.

Modifying Indiana Child Support

When to modify: Two independent pathways. Pathway 1: A substantial and continuing change in circumstances that makes the existing order unreasonable — no specific dollar or percentage threshold; the court evaluates the totality (examples: significant income change, additional children, loss of employment, change in parenting time; must be expected to be permanent or last several months). Pathway 2: At least 12 months have passed since the order was issued or last modified AND a recalculation under current guidelines would result in an amount that differs by more than 20% from the existing order — no need to prove a life change. Per IC 31-16-8-1 and Guideline 4.

How to modify: A Petition for Modification of Child Support must be filed with the court that issued the original order. Required forms include Petition for Modification (Form CS-37) and Child Support Obligation Worksheet (Form CS-42), plus any county-specific forms. Modifications can also be initiated through the local county prosecutor’s office for Title IV-D cases. Modifications are effective retroactive to the date the petition was filed, not before. The Indiana DCS Child Support Bureau and county prosecutors handle IV-D (government-assisted) cases; private attorneys handle non-IV-D cases.

Either parent can request a modification. Changes are typically not retroactive to before the date of filing the modification request.

Indiana Child Support Enforcement

Indiana has multiple tools to enforce child support orders when a parent fails to pay:

• Income withholding orders (wage garnishment) up to 50% of disposable income if supporting spouse/other children or 60% if not; contempt of court (IC 31-16-12-6); driver’s license suspension (triggered at 2000 in arrears or 3 months non-payment
• whichever comes first); professional license suspension (IC 31-16-12-8); hunting and fishing license suspension; federal and state tax refund interception; lottery winnings and insurance settlement interception; property liens and vehicle liens; bank account seizure; credit bureau reporting; passport denial/revocation (federal
• for arrears over 2500); new hire reporting cross-match; data interface with federal and state agency systems; interest charges up to 1.5% per month on delinquent payments (IC 31-16-12-2) and 8% per annum on adjudicated arrearages. Statute of limitations: enforcement action must commence within 10 years after the child turns 18 or is emancipated.

Contact Indiana Child Support Bureau (a division of the Indiana Department of Child Services). At the county level, enforcement is administered by elected county prosecutors operating under cooperative agreements with the Child Support Bureau. The Child Support Bureau is the state’s Title IV-D agency. at https://www.in.gov/dcs/child-support/ for enforcement assistance.

Additional Indiana rules: Parenting Time Credit begins at 52 overnights (approximately 27% of the year); below 52 overnights no credit is given, and the non-custodial parent must provide more than just a place to sleep (food, transportation, homework help). Effective 2024, multi-child parenting time uses a three-step averaging methodology when children have different overnight schedules. Indiana calculates support on a weekly basis (unusual among states). The support schedule is maintained by the Indiana Supreme Court (not the legislature). Under IC 31-16-6-1.5, the court must specify which parent may claim the child as a dependent for federal and state tax purposes. The 2024 guideline update used the Rothbarth economic model and abolished the prior 6% uninsured medical expense rule. Indiana is one of the minority of states allowing courts to order undergraduate college expense contributions.

Official Sources & Resources

• Indiana Child Support Bureau (a division of the Indiana Department of Child Services). At the county level, enforcement is administered by elected county prosecutors operating under cooperative agreements with the Child Support Bureau. The Child Support Bureau is the state’s Title IV-D agency.: https://www.in.gov/dcs/child-support/
• Federal OCSE: acf.hhs.gov/css
• Cornell LII — Child Support: law.cornell.edu
• Indiana Guidelines Statute: IC 31-16-6-1 (child support orders); Indiana Child Support Rules and Guidelines (adopted by Indiana Supreme Court, current version effective January 1, 2024, viewable at https://rules.incourts.gov/Content/child-support/default.htm); IC 31-16-6-6 (termination/emancipation); IC 31-16-6-2 (post-secondary education); IC 31-16-8-1 (modification); IC 31-16-12-1 (enforcement remedies); IC 31-18.5 (UIFSA/interstate)

Last verified April 2026. Contact us if you notice outdated information.

Estimate Your Child Support

Use our free child support estimator to calculate estimated monthly payments. Enter both parents’ incomes, number of children, and custody arrangement to see a personalized breakdown based on your state’s formula.

Related Guides

• Indiana Divorce Process Guide
• Indiana Child Custody Guide
• Indiana Alimony Guide
• All Child Support Guides