Child Support in Louisiana: How Much Will You Owe?

Quick answer: it depends on both parents' incomes, how many children you have, and the parenting schedule. The calculator on this page turns those numbers into a real guideline estimate in about a minute. It is an educational estimate, not legal advice, and the judge always sets the final amount. FamilyCourtHelp.com is a self-help resource, not a law firm.

Wondering how much child support you will owe or receive in Louisiana? The state uses one formula everywhere, so the same math applies in every parish. This page explains how it works, lets you run a live estimate, and links to a dedicated page for each parish at the bottom.

Louisiana follows the Income Shares model under La. R.S. 9:315 et seq.. The court combines both parents' monthly gross incomes, looks up the basic support obligation on the state's guideline schedule for that income level and number of children, then prorates the obligation between the parents according to each parent's percentage share of the combined income.

What counts as income? Louisiana runs the formula on gross income, meaning income before taxes come out. Gross income from any source, salaries, wages, commissions, bonuses, dividends, severance, pensions, interest, trust income, Social Security, workers' compensation, unemployment, and recurring gifts. Self-employment income is net of business expenses.

Parenting time matters directly in Louisiana: the number of overnights each parent has changes the math itself. Louisiana uses a shared-care formula for parenting time. When each parent has the child for at least 146 overnights per year, the case qualifies as shared custody and the court uses a separate shared-custody worksheet instead of the standard one. That shared worksheet can change the support number because it accounts for both households carrying real costs for the child. Below that overnight level, the standard Income Shares worksheet under La. R.S. 9:315 et seq. applies and parenting time alone does not automatically reduce the obligation.

When does it end? Louisiana child support generally ends at age 18 or upon graduation from high school, whichever is later, but not past age 19. Continuing support is available for an adult child with a disability that began before majority.

Can the amount change later? File a rule to modify in district court or request review through Louisiana Child Support Enforcement (DCFS). The general standard under La. R.S. 9:311(A) is a material change in circumstances that is substantial and continuing. The 25% presumption in 9:311(C)(1) is limited to cases where DCFS provides enforcement services, does not apply where the existing award reflects a deviation, and the court retains discretion under 9:311(C)(2). Periodic three-year reviews under 9:311(C)(3) are a separate agency track.

If payments fall behind, Louisiana has real enforcement tools. Louisiana DCFS enforces through automatic income withholding, tax intercept, license suspension, credit reporting, and contempt referrals. The state actively uses license suspension on professional and recreational categories.

Child support cases in Louisiana are generally handled through the state's District Court, and Louisiana Department of Children and Family Services, Child Support Enforcement Section runs the state's child support services program. Forms and local practice can vary, so confirm the current details with your local court or the agency.

The calculator on this page is the same live engine behind our full Child Support Calculator. Enter both incomes, the number of children, and the overnight split, and the estimate updates instantly. The full calculator page adds extras like health insurance, child care costs, and saved scenarios.

Bottom line for Louisiana: the guideline number comes from incomes, children, and parenting time. Run the estimate on this page, keep your paperwork honest and complete, and let the court confirm the final amount.

Frequently asked questions

How much child support will I owe in Louisiana?

There is no flat amount. Louisiana uses the Income Shares model under La. R.S. 9:315 et seq., so the number depends on both parents' incomes, the number of children, and the parenting schedule. The calculator on this page gives you a guideline estimate, and the court sets the final amount.

When does child support end in Louisiana?

Age 18, or until graduation from high school not past age 19, whichever is later.

Can the child support amount be changed later in Louisiana?

Usually yes, when circumstances change enough. La. R.S. 9:311(A): a material change in circumstances that is substantial and continuing. The 25% presumption in 9:311(C)(1) applies ONLY when DCFS is providing child support enforcement services, is subject to the deviation exception, and 9:311(C)(2) leaves the court discretion. The three-year periodic reviews in 9:311(C)(3) are a separate agency process.

Who handles child support cases in Louisiana?

Cases are generally heard in the state's District Court, and Louisiana Department of Children and Family Services, Child Support Enforcement Section handles services like locating parents, establishing orders, and collecting payments.