How Is Child Support Calculated in Louisiana?

November 18, 2025

In Louisiana, child support is determined using the “income shares” model, which considers both parents’ combined income and divides responsibility based on each parent’s share. The state provides a structured schedule for basic support, but courts can adjust amounts for childcare, health insurance, and extraordinary expenses. The process is guided by Louisiana Revised Statutes (R.S.) 9:315 et seq., ensuring that children receive the same proportion of parental income they would have if their parents lived together.

If you’re navigating a child support case in Louisiana, knowing how these calculations work can help you understand what to expect—and what documentation the court requires.

Understanding the Louisiana Child Support Framework

Child support laws in Louisiana are designed to protect a child’s right to financial stability. According to Louisiana Civil Code Article 141, both parents are legally obligated to provide financial support based on their means and the child’s needs.

These laws ensure fairness and consistency across the state by following the guidelines outlined in La. R.S. 9:315 through 9:315.47. Unless proven otherwise, the court presumes that the amount determined by the state’s formula is correct. However, judges can deviate if sticking to the guideline would be unfair or not in the child’s best interest.

Step 1: Determining Each Parent’s Income

The first step in calculating child support in Louisiana is determining each parent’s adjusted gross income (AGI). This figure includes all income sources, such as:

  • Wages or salary
  • Bonuses and commissions
  • Self-employment income
  • Unemployment or workers’ compensation
  • Rental income or dividends

Courts require verified income statements supported by tax returns, W-2s, or pay stubs. Self-employed parents must show profit-and-loss statements or similar documentation. Once both parents’ AGIs are verified, they are added together to determine the combined monthly income.

This combined figure is essential because it establishes the baseline for calculating the basic child support obligation.

Step 2: Using the Louisiana Child Support Schedule

Louisiana maintains a statewide child support schedule (found in R.S. 9:315.19), which outlines the basic obligation based on the parents’ combined income and the number of children. The court refers to this chart to find the standard amount that should be allocated for child support.

For example, if the parents’ combined monthly income is $6,000 and they have two children, the schedule provides a base support amount. That amount is then divided proportionally according to each parent’s share of the total income.

Example:

  • Parent A earns $4,000/month (66% of the total income)
  • Parent B earns $2,000/month (34%)

If the combined support obligation is $1,200, Parent A would be responsible for roughly $792 (66%), while Parent B would pay $408 (34%).

Step 3: Adding Mandatory and Discretionary Expenses

Once the basic child support amount is established, the court adds other relevant expenses to calculate the total child support obligation. These include:

Mandatory Add-Ons

  • Health insurance premiums: The cost of insuring the child is added to the support calculation.
  • Work-related childcare expenses: Costs like daycare or after-school care are included.
  • Extraordinary medical expenses: Unreimbursed medical costs exceeding $250 per child per year are factored in.

Discretionary Add-Ons

  • Private school tuition: If it’s necessary for the child’s needs or consistent with the family’s standard of living.
  • Special needs costs: Such as therapy or tutoring.
  • Transportation costs: Especially in long-distance custody arrangements.

These add-ons are divided between parents according to their income percentage, ensuring that both contribute fairly.

Step 4: Custody Arrangements and Their Impact on Calculations

The amount of time each parent spends with the child directly affects support calculations. Louisiana courts recognize three main custody arrangements:

1. Sole or Primary Custody

One parent is the primary custodian. The noncustodial parent typically pays their share of support directly to the custodial parent.

2. Shared Custody

When both parents have the child for roughly equal time, Louisiana law multiplies the basic obligation by 1.5 before dividing it according to income share. This adjustment accounts for duplicated household expenses like housing, food, and utilities.

3. Split Custody

If each parent has custody of at least one child, the court calculates separate obligations for each and offsets them.

These variations ensure that child support reflects both parents’ contributions and time spent with the child.

Step 5: Final Calculation and Court Order

After determining income, basic obligations, and additional expenses, the court:

  1. Calculates the total child support obligation (basic amount + add-ons).
  2. Allocates that obligation proportionally based on each parent’s income share.
  3. Issues a child support order requiring one parent (typically the noncustodial) to make payments to the other.

The order will also specify payment frequency, method, and any conditions for direct payment of specific expenses (such as medical bills or school fees).

When Courts Deviate from the Guidelines

While the statutory formula is presumed correct, judges can deviate if applying it would result in unfairness or contradict the child’s best interests. Reasons for deviation may include:

  • Significant income disparity between parents
  • The child has special needs or extraordinary expenses
  • Substantial travel costs for visitation
  • Shared or alternating custody that reduces costs for one parent

When deviating, the court must clearly state its reasons and show what the guideline amount would have been.

How Long Child Support Lasts in Louisiana

Generally, child support ends when a child turns 18 or graduates from high school—whichever comes later. However, there are exceptions:

  • If the child is disabled or unable to become self-supporting, support can continue beyond 18.
  • If the child is a full-time student under 19, courts may extend support while they finish school.

Each order may vary depending on the circumstances and the court’s discretion.

Modifying a Child Support Order

Child support isn’t set in stone. Either parent can request a modification if there’s a material and substantial change in circumstances, such as:

  • A significant increase or decrease in income
  • Change in custody or parenting time
  • Job loss or medical disability

Louisiana law (R.S. 9:311) also allows a review every three years, even without a major change, to ensure fairness based on updated income and expenses.

What Documents You’ll Need

When filing for or modifying child support, it’s essential to prepare complete documentation, including:

  • Recent pay stubs or income statements
  • Tax returns (typically the most recent two years)
  • Proof of health insurance coverage
  • Childcare and medical expense receipts
  • Custody orders or parenting agreements

These documents help the court verify income, ensure accuracy, and apply the formula correctly.

Common Questions About Child Support in Louisiana

Does overtime count as income?

Yes, overtime and bonuses can be included if they’re consistent and reliable. Courts often average irregular income over time to prevent inflated or unfair figures.

Who pays for health insurance?

Usually, the parent who has access to affordable coverage provides it. The child’s portion of the premium is added to the total support obligation.

Can child support be paid directly to the other parent?

Most payments are made through the Louisiana Department of Children & Family Services (DCFS) to maintain clear records. However, the court may allow direct payments if both parties agree.

What happens if child support isn’t paid?

Failure to pay can lead to enforcement actions such as wage garnishment, license suspension, or even contempt of court proceedings.

Why Legal Guidance Matters

Louisiana’s child support process is formula-based but not always straightforward. Complex issues—like shared custody, fluctuating income, or special needs—can significantly affect the final amount. Having a family law attorney helps ensure that your rights and your child’s interests are protected throughout the process.

At The Hinch Firm Trial Attorneys, we help clients understand and navigate Louisiana’s child support laws with precision and care. Our team focuses on practical solutions that support families and promote long-term stability.

Final Thoughts

Child support in Louisiana is built on fairness and predictability, but every family’s situation is unique. Understanding how the state’s formula works—and how courts may adjust it—can make a big difference in preparing for your case. Whether you’re seeking an initial order, modification, or enforcement, professional guidance can help you achieve the best outcome for your family.

Call us at (337) 267-8430 to schedule a consultation with an experienced Louisiana child support attorney.

Disclaimer: This article is for informational purposes only and does not constitute legal advice. For legal guidance tailored to your specific situation, consult a licensed attorney.

We encourage you to reach out to us right away for a confidential consultation. Call (337) 267-8430 or contact us online to get started.