Calculator

Enter both parents' monthly gross incomes, the number of children, and the parenting arrangement. The calculator combines income, reads the basic obligation off the LA schedule, prorates by income share, and applies add-ons, the parenting adjustment, and any deviation you specify. Free, no signup.

Schedule effective 2025-01-01. How it works · About this calculator

Income

Parent A — monthly gross

Parent B — monthly gross

Enter each parent's adjusted gross monthly income. Imputed or self-employment income should already be resolved to a monthly figure.

Children & parenting

Number of children

Parenting arrangement

Standard — one parent is the residential/custodial parentApproximately equal / shared (50-50)Custom — specify overnights with each parent

For approximately-equal (shared) custody, Louisiana uses Worksheet B: the basic obligation is multiplied by 1.5, each parent's share is cross-multiplied by the OTHER parent's share of physical-custody time, and the two are offset. The result is capped at what the obligor would owe as the domiciliary parent — a ceiling, never a floor (R.S. 9:315.9).

Paying (non-residential) parent

Add-ons (pro-rated by income share)

Health insurance (children's portion)

Paid by

Work-related childcare

Paid by

Extraordinary uninsured medical

Paid by

Deviation (optional)

A court-ordered adjustment to the presumptive amount, supported by written findings. Enter a monthly dollar amount.

Deviation amount / mo

Direction