Indiana child support calculator

Indiana starts from a simple idea: a child should receive the same share of parental income they would have if the parents lived together. So it does not look at one parent’s income alone. It combines both parents’ weekly gross income, finds the total the state expects them to spend on the child, and then divides that total between them in proportion to what each earns.

Gross income is broad — wages, salary, self-employment income, and most other regular income — with limited adjustments. The combined figure is what drives the Guideline Schedule lookup in the next section.

The Basic Child Support Obligation comes from the Indiana Guideline Schedule effective May 14, 2024 — a published table indexed by combined weekly income and number of children. For example, at $650 combined weekly income the basic obligation for one child is $120; at $400 it is $68 for one child and $88 for two. This calculator reads the actual table, so those figures match to the dollar.

The schedule runs up to $9,200 of combined weekly income. Above that, the schedule ends and a percentage of the combined income applies (for two children, 11.4%), with the court holding discretion over the amount. When your combined income is above $9,200, this tool switches to the percentage and marks the result Approximate.

Two costs are added to the basic obligation before splitting: work-related child care and the child’s health insurance premium. The resulting total obligation is then divided by each parent’s share of the combined income. If Parent A earns 55% of the combined income, Parent A is responsible for 55% of the total obligation — that share is the starting support figure before any parenting-time credit.

Indiana reduces the paying parent’s support based on the number of annual overnights they have with the child, recognizing costs they cover directly during parenting time. The credit is read from a table of overnights (for example, 146–150 overnights carries a 0.615 total / 0.472 duplicated factor) and grows as overnights increase. Because the official worksheet computes this credit in more detail than a single factor, this calculator treats any result that includes parenting time as an estimate and flags it — verify with the official worksheet before relying on it for a filing.

It does not handle every adjustment the guidelines allow — subsequent-born children, split or shared physical custody arrangements, extraordinary medical or educational expenses, or imputed income for an underemployed parent. It computes the core income-shares calculation exactly and estimates the parenting-time credit. For a figure you can file, use the official Indiana worksheet or consult an attorney.