How Is Child Support Calculated in Louisiana?
Updated 2026 · Serving New Orleans, Metairie & Southeast Louisiana
Louisiana calculates child support using the Income Shares Model under La. R.S. 9:315 et seq. Both parents' net monthly incomes are combined and applied to a state Schedule of Basic Child Support Obligations. Each parent's share is proportional to their income. The base amount is then adjusted for health insurance premiums, childcare costs, and extraordinary expenses. Shared custody arrangements use a separate worksheet that adjusts for each parent's parenting time percentage.

Written & Reviewed By
Jonathan M. Rhodes
Attorney at Law — The Rhodes Law Firm
Practice Areas: Family Law — Child Support · Last Updated:
Serving: Orleans Parish, Jefferson Parish, St. Charles Parish, Louisiana
Step-by-Step: How Louisiana Calculates Child Support
Determine Each Parent's Gross Income
Include all sources: wages, self-employment, bonuses, rental income, Social Security, etc.
Calculate Net Monthly Income
Subtract allowable deductions (taxes, mandatory retirement contributions, union dues, health insurance premiums paid for the child).
Combine Both Parents' Net Incomes
Add both parents' net monthly incomes together to get the combined monthly income figure.
Apply the Louisiana Support Schedule
Find the basic child support obligation from the state's Schedule of Basic Child Support Obligations based on combined income and number of children.
Allocate Each Parent's Share
Divide the basic obligation proportionally based on each parent's percentage of combined income.
Add Adjustments
Add each parent's share of work-related childcare costs and health insurance premiums for the child. Extraordinary medical expenses may also be allocated.
Questions About Your Child Support Amount?
Jonathan M. Rhodes can review your income situation and help you understand what a court is likely to order. Free consultation.
Deviations From the Guidelines
Louisiana courts may deviate from the calculated guideline amount if strict application would be unjust or inappropriate. Deviation factors include extraordinary medical expenses not covered by insurance, the child's special needs, a parent's financial obligations to other children, and the child's ownership of assets that can satisfy some needs. Any deviation must be supported by written findings explaining why the guideline amount is inappropriate.
Related Child Support Resources
Child Support in Louisiana — Frequently Asked Questions
Ensure Your Child Receives the Support They Deserve
Free initial consultation with Jonathan M. Rhodes. Serving New Orleans, Metairie, and Southeast Louisiana.