Indiana Child Support Laws (2026): Guidelines & Calculator

Indiana calculates child support using the Income Shares Model, as established by the Indiana Child Support Rules and Guidelines. Both parents' weekly adjusted gross incomes are combined, matched against the state support schedule, and divided proportionally so each parent contributes a share that reflects their earnings. Use the Indiana child support calculator below to estimate a guideline amount, or open the full-page Indiana child support calculator for a detailed breakdown you can print.

How Indiana Child Support Works

Indiana law requires both parents to contribute financially to raising their children, even after a separation or divorce. The state's child support system is governed by Indiana Code Title 31, Article 16 and the Indiana Child Support Rules and Guidelines, which were originally adopted in 1989 and most recently updated effective May 14, 2024.

The guidelines serve three primary functions:

• Ensure an appropriate standard of support for children based on parental ability to pay
• Make child support awards equitable through consistent treatment of similar cases
• Improve the efficiency of the court process by providing a standardized framework

Indiana's system is built on the Income Shares Model. This approach estimates the amount of money parents would have spent on their children if the family had stayed together, then divides that obligation between both parents based on their respective incomes.

2024 Guideline Changes Still in Effect

The Indiana Supreme Court approved a significant overhaul of the child support guidelines, with the comprehensive revision taking effect January 1, 2024, and a further update effective May 14, 2024. These updated guidelines remain in effect through 2026, as no new rule set has been published. The key changes include:

Updated Support Schedule

The weekly support payment schedule was recalculated using the Rothbarth economic model, which more accurately estimates the cost of raising a child across different income brackets. As a result, weekly child support payments increased by an estimated 4% to 22% depending on the parents' combined income level.

Parents whose income falls under the low-income adjustment threshold are generally exempt from these increases. Notably, the low-income adjustment is now based on the combined income of both parents rather than just one parent's income.

Elimination of the 6% Rule

Under the old guidelines, the custodial parent was responsible for the first 6% of uninsured medical expenses (called "cash medical support"). The 2024 update eliminated this rule entirely. Now, both parents share all uninsured healthcare expenses in proportion to their respective incomes from the first dollar.

New Parenting Time Credit Calculation

The 2024 guidelines introduced a new method for calculating the parenting time credit when children in the same family have different overnight schedules with the noncustodial parent. Parents must now:

1. Run a separate Child Support Obligation Worksheet for each unique overnight schedule
2. Calculate the parenting time credit for each worksheet
3. Average the resulting credit amounts
4. Enter the averaged credit on Line 7 of the final worksheet

Worksheet Filing Requirements

Courts now require both parties to file a complete Child Support Obligation Worksheet with every child support order, even when parents agree on an amount. If the court deviates from the guideline amount, the parties must provide a written justification beyond simply stating "parties agree to deviate."

How Child Support Is Calculated in Indiana

The official Indiana Child Support Calculator walks parents through the calculation process and can generate court-ready forms. Here is how the calculation works step by step.

Step 1: Determine Weekly Gross Income

Each parent's weekly gross income is calculated from all sources, including:

• Salaries, wages, and tips
• Self-employment income (after deducting necessary business expenses)
• Commissions and bonuses
• Regular or expected overtime pay
• Royalties and trust income
• Disability, unemployment, and workers' compensation benefits
• Social Security benefits
• Pensions and annuities
• Interest and dividend income
• Rental income

If a parent is voluntarily unemployed or underemployed, the court may impute income based on what that parent could reasonably earn given their education, work history, and local job market.

Step 2: Make Adjustments

Certain deductions are subtracted from gross income to arrive at "adjusted weekly gross income." These adjustments include:

• Support obligations for prior-born children from other relationships
• Court-ordered spousal maintenance (alimony) actually being paid
• Certain tax obligations

Step 3: Combine Incomes and Consult the Support Schedule

Both parents' adjusted incomes are added together. This combined figure is matched against the Indiana Schedule of Weekly Support Payments to determine the basic child support obligation for the number of children involved.

Step 4: Add Health Insurance and Child Care Costs

The weekly cost of the children's health insurance premiums and any work-related child care expenses are added to the basic support obligation to calculate the total child support obligation.

Step 5: Divide the Obligation Proportionally

Each parent's share of the total obligation is calculated based on their percentage of the combined adjusted income. For example, if Parent A earns 60% of the combined income and Parent B earns 40%, they are responsible for 60% and 40% of the total obligation, respectively.

Step 6: Apply the Parenting Time Credit

If the noncustodial parent has the child for 52 or more overnights per year (approximately 14% of annual overnights), a parenting time credit reduces the noncustodial parent's obligation. The credit increases as overnight time increases, up to an equal 50/50 parenting time arrangement. The credit table begins at 52 overnights; below that threshold, no standard credit applies.

Deviations from the Guidelines

Indiana judges may deviate from the calculated guideline amount if strict application would produce a result that is unjust or inappropriate. Factors that may justify a deviation include:

• Significant travel expenses for exercising parenting time
• Unusual daily work commuting costs
• Financial support of an elderly parent
• Military housing benefits
• Extraordinary medical expenses of a parent
• Purchase of school clothing or supplies by the noncustodial parent

What Expenses Child Support Covers

Child support in Indiana is intended to cover the child's basic needs, including:

• Housing: A share of rent or mortgage, utilities, and household maintenance
• Food and clothing: Daily necessities for the child
• Medical care: Health insurance premiums and uninsured medical, dental, and vision expenses
• Child care: Work-related daycare or after-school care costs
• Education: School tuition, fees, books, and supplies when applicable

Extracurricular activities such as sports leagues, music lessons, and summer camps are considered "optional expenses" under Indiana law. These costs are not automatically included in the support calculation and require a separate agreement between the parents on how they will be shared.

How to Modify a Child Support Order

A child support order does not automatically change when the guidelines are updated or when circumstances shift. A parent must petition the court for a modification. Indiana law under IC 31-16-8 provides two grounds for modification:

Substantial Change in Circumstances

A parent may request modification at any time by demonstrating a substantial and continuing change in circumstances, such as:

• Involuntary job loss or significant income reduction
• A serious illness or disability affecting earning capacity
• A significant change in the child's needs (medical condition, educational requirements)
• A change in parenting time arrangements
• Additional children born to either parent

20% Threshold After 12 Months

Alternatively, a parent can request modification if at least 12 months have passed since the current order (or last modification) and a recalculation under the current guidelines would result in an amount more than 20% different from the existing order.

How to File

Indiana provides forms for modification through Indiana Legal Help. Parents can file:

• With the other parent's agreement
• Without the other parent's agreement

Modification procedures may vary by county. Under IC 31-16-16-6, a court may modify only the support payments that come due after notice of the petition to modify has been given to the other party, either directly or through the appropriate agent, and before a final order on the petition is entered. Payments already delinquent cannot be modified retroactively. The operative date is service of that notice rather than the filing date, which matters when service lags the filing by weeks.

Enforcement of Child Support in Indiana

When a parent falls behind on child support payments, Indiana provides several enforcement tools through the Department of Child Services and the courts.

Income Withholding

Income withholding is the primary enforcement method. Under Indiana law, employers must deduct child support from the obligor's paycheck and send it to the Indiana State Central Collection Unit (INSCCU). Key rules include:

• Up to 50% of disposable income can be withheld if the obligor supports a spouse or other children, and up to 55% once the arrears reach back more than twelve weeks
• Up to 60% can be withheld if the obligor has no other dependents, and up to 65% once the arrears reach back more than twelve weeks. Indiana ties its ceiling to the federal limit in 15 U.S.C. 1673(b) through IC 31-16-15-7.5(b)
• Child support withholding takes priority over all other claims on income except federal, state, and local taxes
• An income payor that fails to forward withheld income receives a certified-mail notice of failure to comply from the Title IV-D agency. If it still does not forward the money within 30 days, IC 31-16-15-23 makes it liable to the obligee for the support not paid and to the obligor for the amount withheld and not paid, interest at the judgment rate, reasonable attorney's fees, and court costs, and it may be held in contempt of court
• A separate civil penalty of $25 per obligor per pay period under IC 31-16-15-16(c) applies only to an income payor with more than 50 employees that does not remit through electronic funds transfer or the state central collection unit's electronic or Internet method
• IC 31-16-15-25 imposes a penalty of up to $5,000 on an income payor that discharges, refuses to employ, disciplines, or otherwise discriminates against an obligor because of a withholding order

Additional Civil Enforcement Actions

For parents who remain delinquent, Indiana can pursue:

• License suspension or revocation: Driver's license, professional licenses, and other state-issued permits
• Tax refund intercept: Seizure of federal and state tax refunds
• Property liens: Filed against real estate, vehicles, and other assets
• Bank account garnishment: Funds seized directly from financial accounts
• Credit reporting: Delinquent child support reported to credit bureaus
• Passport denial: Federal law allows denial of passport applications for arrears exceeding $2,500

Contempt of Court

A court can hold a non-paying parent in contempt. Even if the parent is unemployed, the court may order the parent to actively seek employment or perform community service. Repeated contempt findings can result in jail time.

Criminal Penalties

Under Indiana Code 35-46-1-5, knowingly or intentionally failing to provide support to a dependent child is a criminal offense:

• Level 6 felony: 6 months to 2.5 years imprisonment and a fine of up to $10,000
• Level 5 felony (repeat offenders): 1 to 6 years imprisonment and a fine of up to $10,000

Indiana law provides three affirmative defenses to a nonsupport charge: the child abandoned the home without the parent's consent or a court order (unless the child's leaving was the parent's fault), the accused provided treatment by spiritual means through prayer, in the legitimate practice of a religious belief, in lieu of medical care, or the accused was unable to provide support. Federal charges under the Deadbeat Parents Punishment Act may also apply when a parent crosses state lines to avoid paying support.

When Child Support Ends in Indiana

In Indiana, the age of emancipation is 19, not 18 as in many other states. When a child turns 19, the noncustodial parent's obligation to pay current child support terminates by operation of law.

However, child support does not always end at 19. The court may order continued support if:

• The child has a physical or mental incapacity that existed before age 19
• The child is still a full-time student in a secondary school. Under IC 31-16-6-6(a)(4) and (c), a parent or guardian must file a notice with the court and provide it to each party no earlier than the child's 17th birthday and no later than the child's 19th birthday, attaching proof of enrollment and the expected graduation date. If no party files an objection or requests a hearing within 30 days of receiving that notice, the court may issue an order continuing support through the expected graduation date without holding a hearing, and support then terminates on graduation from secondary school

Early Termination Before Age 19

A parent may petition the court to terminate child support before the child turns 19 if the child:

• Gets married
• Joins active duty military service
• Is no longer under the care or control of either parent or a court-approved agency
• Demonstrates financial independence

Emancipation forms are available through Indiana Legal Help.

Arrears After Termination

Even after a child support order terminates, any unpaid arrears remain legally enforceable. The noncustodial parent must continue paying until the balance is cleared. Indiana law sets two statutes of limitations for collection:

• Enforcement actions: Must begin within 10 years after the child turns 18 or is emancipated, whichever comes first
• Child support judgments: Remain enforceable for 20 years

How to Make and Track Payments

Indiana processes child support payments through the Indiana State Central Collection Unit (INSCCU). Parents have several payment options:

• Online: Pay by credit or debit card at childsupportbillpay.com/Indiana, with options for one-time or recurring payments (weekly, bi-weekly, or monthly)
• By phone: Call 1-855-972-9427 to pay by credit or debit card
• By mail: Send a personal check, money order, cashier's check, or certified check payable to INSCCU
• In person: Pay cash at MoneyGram locations (including Walmart, CVS, and Kroger) or at the County Clerk's Office where the order was issued

To check your balance or payment history, call the KIDSLINE at 1-800-840-8757. Automated service is available 24/7, and live representatives are available Monday through Friday, 7:00 AM to 5:00 PM ET.

Payments are distributed to the custodial parent weekly or monthly, depending on the arrangement, via direct deposit or a prepaid debit card.

Establishing Paternity

Before a child support order can be entered, legal paternity must be established. Indiana law presumes the husband is the father if a child is born during the marriage or within 300 days after the marriage legally ends.

For unmarried parents, paternity can be established by:

• Paternity affidavit: Both parents sign a voluntary acknowledgment at the hospital or later through the local health department
• Court order: Either parent or the state can file a petition to establish paternity, which may include genetic testing

If you are unsure about paternity, request genetic testing before signing any agreements. Contact the county prosecutor's Title IV-D office for assistance with paternity establishment.

More Indiana Laws

• Indiana Alimony Laws
• Indiana Child Custody Laws
• Indiana Divorce Laws