Indiana calculates child support using a formula, not a fixed amount
Indiana does not have a set dollar amount for child support. Instead, the state uses the Income Shares Model, which means the court calculates what percentage of both parents' combined income should go toward the child, then divides that obligation between them based on each parent's earnings.
The actual payment depends on three things: how much each parent makes, how much time the child spends with each parent, and whether either parent pays for health insurance or childcare. Two families with one child will almost never pay the same amount.
Indiana courts use a guideline table that shows the combined parental income and the total child support obligation for that income level. For one child, the obligation ranges from roughly 17% to 20% of combined parental income, depending on the income bracket. A parent earning $40,000 per year with another parent earning $30,000 will owe a different amount than two parents earning $60,000 each, even though the combined income is the same.
Key Takeaways
- Indiana uses a percentage-based formula tied to both parents' gross income, not a flat rate per child.
- The paying parent's obligation is their share of the total, calculated by dividing their income by the combined household income.
- Health insurance premiums, childcare costs, and parenting time all adjust the final amount up or down.
- You can find the current guideline table on the Indiana Supreme Court website, but a family law attorney or the local child support office can calculate your specific obligation.
How Indiana calculates the base obligation
Start with gross income for both parents. Gross income includes wages, salary, bonuses, self-employment income, rental income, and some benefits. It does not include food stamps or Supplemental Security Income (SSI).
Add both parents' gross incomes together. Look up that combined total on Indiana's child support guideline table. The table tells you the total monthly obligation for one child at that income level. For example, if combined income is $5,000 per month, the guideline obligation might be $900 per month for one child — but this varies by the exact income and changes annually.
Divide each parent's income by the combined income to find their percentage. If Parent A earns $3,000 and Parent B earns $2,000 (combined $5,000), Parent A's share is 60% and Parent B's is 40%. Parent A would owe 60% of the $900 obligation, or $540 per month, if Parent A is the paying parent and has standard parenting time.
Adjustments that change the amount
The base calculation is a starting point. Indiana law requires the court to adjust the obligation if certain costs apply. The most common adjustments are:
Health insurance: If the paying parent provides health insurance for the child, they can deduct the actual premium from their obligation. If the receiving parent provides it, the cost is built into the guideline table already.
Childcare costs: If the receiving parent pays for childcare so they can work, the paying parent's obligation increases. The increase is proportional to their income share. If childcare costs $800 per month and the paying parent earns 60% of combined income, they pay an additional $480 toward childcare.
Parenting time: If the paying parent has the child overnight more than 40% of the time, their obligation decreases. The more overnights, the lower the payment, because they are directly covering expenses during that time. A parent with 50/50 custody pays less than a parent with every other weekend.
Other children: If the paying parent supports other children from different relationships, they can request a reduction. The court considers the number and ages of those children.
What the Indiana guideline table shows
The Indiana Supreme Court publishes an official child support guideline table each year. The table lists combined parental income in rows and shows the total monthly obligation for one child in the corresponding column. The table covers income ranges from roughly $1,000 per month up to $30,000 or more per month. For income above the table's maximum, the court uses the same percentage formula.
The table is updated annually, usually in January, to account for inflation and wage changes. If you are looking at an old table, the amounts will be lower than current obligations. You can find the current table through the Indiana Supreme Court's website or by contacting your local child support office.
The table assumes standard parenting time (the paying parent has the child roughly 20% of the time). If parenting time is different, the obligation shifts. The table also assumes the paying parent provides health insurance; if not, the obligation increases slightly.
Examples of what one child costs in Indiana
These examples use approximate 2024 guideline amounts and assume standard parenting time and that the paying parent provides health insurance. Actual amounts depend on the exact income, current guideline table, and any adjustments.
| Combined Monthly Income | Approximate Total Obligation | Paying Parent's Share (if 50/50 income split) |
|---|---|---|
| $3,000 | $510 | $255 |
| $5,000 | $900 | $450 |
| $7,000 | $1,260 | $630 |
| $10,000 | $1,800 | $900 |
These are rough figures for illustration only. Your actual obligation will differ based on your exact income, the current guideline table, parenting time, insurance costs, and childcare expenses. A $1,000 difference in combined income can shift the obligation by $100 to $200 per month.
Where to find the exact guideline table and get your calculation
The Indiana Supreme Court publishes the official guideline table on its website under child support resources. You can also request it from your county's child support office, which is usually part of the prosecutor's office or a separate agency.
If you want to calculate your own obligation, you need both parents' gross income, the current guideline table, and information about parenting time and any adjustments. Many people use an online calculator based on the Indiana formula, but these are only as accurate as the information you enter and the table they use.
For a precise calculation, especially if income is variable, childcare costs are high, or parenting time is not standard, a family law attorney in your county can run the numbers. Some attorneys offer a brief consultation for this purpose at a flat rate. Your local child support office can also calculate the obligation if you provide income documentation.
What happens if income changes
Child support orders can be modified if either parent's income changes significantly. Indiana law allows a modification if income changes by 10% or more, or if circumstances like job loss, disability, or a major change in parenting time occur.
The parent requesting the change must file a petition with the court. The court will recalculate using current income and issue a new order. Until the new order is in place, the old amount is still owed. If you stop paying because you lost your job, you can fall behind on arrears even if a modification is pending.
If you expect your income to change, do not wait to file. The sooner you request a modification, the sooner a new order takes effect. Some changes, like a temporary layoff, may not result in a permanent modification, but the court will consider them.
Frequently Asked Questions
Is child support the same for every parent in Indiana?
No. The amount depends on both parents' income, parenting time, and whether either parent pays for health insurance or childcare. Two parents earning the same salary but with different parenting arrangements will owe different amounts.
Can I negotiate child support instead of using the guideline?
Yes, but only if both parents agree in writing and the court approves it. The court must find that the agreed amount is in the child's best interest and not below the guideline without good reason. Most agreements that deviate from the guideline require explanation.
What if one parent does not report their income?
The court can impute income based on employment history, education, and earning capacity. If a parent is intentionally underemployed to avoid child support, the judge can assign them a higher income for calculation purposes. Hiding income can result in contempt charges.
Does child support end at age 18 in Indiana?
Usually, yes. Child support ends when the child turns 18 or graduates from high school, whichever is later. If the child is still in high school after turning 18, support continues until graduation or age 19, whichever comes first. Support can continue past 18 if the child is disabled.
What if I have joint custody — do I still pay child support?
Yes. Even with 50/50 custody, one parent usually pays the other because their income is higher. The guideline formula accounts for parenting time, so a parent with equal overnights pays less than a parent with every other weekend, but they usually still owe something unless incomes are equal and parenting time is truly equal.