Mississippi Child Support Guidelines

Mississippi uses the percentage of income model to calculate child support, making it one of only a handful of states that rely on this approach. Unlike the income shares model used by most states, Mississippi’s system bases the support obligation on a fixed percentage of the noncustodial parent’s adjusted gross income. The governing statute is Miss. Code Ann. 43-19-101, and the guidelines apply to all child support determinations, whether in divorce, paternity, or modification proceedings.

This article explains how Mississippi calculates child support, what income counts, the specific percentages used, when courts deviate from the guidelines, and how healthcare and modification work.

The Percentage of Income Model

Most states use the income shares model, which combines both parents’ incomes and allocates the child support obligation proportionally. Mississippi takes a different approach. The percentage of income model looks only at the noncustodial parent’s income and applies a statutory percentage based on the number of children.

The logic is straightforward: the noncustodial parent pays a set percentage of their income, and the custodial parent is presumed to spend their share directly on the child through day-to-day care. This model is simpler to calculate but does not account for the custodial parent’s income in the formula.

Statutory Percentages

The Mississippi child support guidelines establish the following percentages based on the number of children:

These percentages create a rebuttable presumption of the correct child support amount. This means the court will apply them unless a party presents evidence justifying a deviation. The percentages apply to the noncustodial parent’s adjusted gross income up to a certain level. For very high incomes, the court may exercise discretion rather than mechanically applying the percentage.

How the Calculation Works

The basic calculation is:

Adjusted gross income x statutory percentage = child support obligation

For example, if the noncustodial parent has an adjusted gross income of $4,000 per month and there is one child, the guideline amount is:

$4,000 x 14% = $560 per month

For the same income with two children:

$4,000 x 20% = $800 per month

The simplicity of this calculation is both the model’s strength and its limitation. It provides a clear, predictable result but does not factor in the custodial parent’s income, the specific needs of the child, or the actual cost of raising a child in the family’s community.

Adjusted Gross Income

The starting point for the child support calculation is the noncustodial parent’s adjusted gross income (AGI). Mississippi defines this broadly to capture all sources of income, then allows specific deductions.

Gross income includes:

• Wages, salary, bonuses, and commissions
• Self-employment income (gross receipts minus ordinary and necessary business expenses)
• Interest and dividend income
• Rental income
• Pension, retirement, and annuity income
• Social Security benefits
• Workers’ compensation benefits
• Unemployment benefits
• Disability benefits
• Alimony received from a prior relationship
• Capital gains
• Trust and estate income
• Any other income from any source

Allowable deductions to arrive at adjusted gross income include:

• Federal, state, and local income taxes
• Social Security contributions (FICA)
• Mandatory retirement contributions
• Union dues required as a condition of employment
• Health insurance premiums for the parent (not including the child’s portion, which is handled separately)

After subtracting these deductions from gross income, the result is the noncustodial parent’s adjusted gross income, which serves as the base for applying the statutory percentage.

Imputing Income

When a parent is voluntarily unemployed or underemployed, the court may impute income to that parent. Imputation means the court assigns an income level based on what the parent could reasonably earn, rather than what they currently report.

Courts consider:

• The parent’s education, training, and work experience
• The parent’s recent employment history
• The prevailing wage for comparable positions in the parent’s community
• Whether the parent is making a good-faith effort to find employment
• Whether the parent has a physical or mental disability that limits earning capacity

Imputation is particularly common when a parent quits a job, reduces hours, or takes a lower-paying position around the time of a divorce or support action. The court will not allow a parent to artificially lower their income to reduce their child support obligation.

Deviation Factors

While the statutory percentages create a presumption, the court may deviate upward or downward based on specific factors. Under Mississippi law, the court considers:

• Extraordinary medical, psychological, or educational expenses of the child
• Independent income of the child (such as a trust or employment)
• The paying parent’s support obligations for other children from a prior relationship
• Seasonal variations in a parent’s income
• The age of the child and the increasing costs associated with older children
• Special needs of the child, including disabilities or chronic medical conditions
• The relative financial condition of each parent
• The custodial parent’s earning capacity (while not part of the formula, it may justify a deviation)
• The standard of living the child would have enjoyed if the family had remained intact
• Tax advantages available to either parent
• Any other factor the court considers relevant to achieving a just result

When the court deviates from the guidelines, it must make specific written findings explaining why the guideline amount is unjust or inappropriate under the circumstances. This requirement provides transparency and creates a record for any future appeal or modification.

Healthcare Obligations

Mississippi law requires that child support orders address the child’s healthcare needs. The court typically orders one or both parents to maintain health insurance coverage for the child, with the cost factored into the overall support arrangement.

Health Insurance

If the noncustodial parent has access to employer-provided health insurance at a reasonable cost, the court usually orders that parent to add the child to their policy. The cost of the child’s portion of the health insurance premium may be:

• Added to the child support obligation
• Deducted from the noncustodial parent’s income before applying the percentage
• Divided between the parents based on the court’s discretion

Unreimbursed Medical Expenses

Medical, dental, vision, orthodontic, and prescription expenses not covered by insurance are typically divided between the parents. Courts often order a proportional split or assign the costs based on what is equitable given each parent’s financial situation.

Extraordinary Medical Expenses

If a child has special medical needs requiring ongoing treatment, therapy, or specialized care, the court may order additional support above the guideline amount to cover these expenses. This falls under the deviation authority described above.

Duration of Child Support

In Mississippi, child support generally continues until the child reaches age 21 or is otherwise emancipated. Emancipation events include:

• Marriage of the child
• Entry into military service
• The child becoming self-supporting
• A court order of emancipation

Mississippi’s age-21 threshold is higher than most states, where child support typically ends at 18 or upon high school graduation. This extended obligation can result in a significantly longer payment period compared to neighboring states.

Modification of Child Support

Either parent may seek a modification of child support when there has been a material change in circumstances since the original order was entered. Common grounds for modification include:

• A significant increase or decrease in the noncustodial parent’s income
• A change in the child’s needs, such as new medical requirements or educational expenses
• A change in custody or visitation arrangements
• The paying parent’s involuntary job loss (voluntary unemployment does not justify a reduction)
• A change in the cost of health insurance or childcare

Mississippi also allows for modification if applying the current guidelines to the noncustodial parent’s current income would result in a support amount that differs from the existing order by 25% or more. This provides an objective threshold for triggering a review.

The Modification Process

To modify child support in Mississippi:

1. File a petition to modify in the court that issued the original order
2. Serve the other parent with the petition and supporting documentation
3. Provide evidence of the material change in circumstances
4. Attend a hearing where both sides present their case
5. Receive the court’s order, which takes effect from the date of the petition (not retroactively)

Modifications are not retroactive in Mississippi. The new support amount takes effect from the date the petition is filed, not from the date the change in circumstances occurred. This makes it important to file promptly when circumstances change.

Enforcement

If a parent fails to pay court-ordered child support, Mississippi provides several enforcement mechanisms:

• Wage withholding through income withholding orders served on the employer
• Contempt of court, which can result in fines or imprisonment
• Interception of tax refunds (federal and state)
• Suspension of driver’s licenses and professional licenses
• Credit bureau reporting of past-due support
• Liens on real and personal property

The Mississippi Department of Human Services, Division of Child Support Enforcement, assists with enforcement for parents who need help collecting support.

What to Do Next

Mississippi’s percentage of income model makes child support calculations relatively straightforward, but the details matter. Accurately determining adjusted gross income, identifying applicable deviations, and ensuring healthcare costs are properly allocated all affect the final number. If your circumstances have changed since the original order, prompt action on modification protects your rights.

For a general overview of how child support works, see our guide on how child support is calculated. For information on enforcement tools, see our article on child support enforcement. To learn about modification nationally, see our guide on how to modify child support.

To discuss your child support questions, schedule a free consultation with a Mississippi family law attorney who can review your income, calculate your likely obligation, and advise on any grounds for deviation or modification.

Frequently Asked Questions

What percentages does Mississippi use for child support?

Mississippi applies the following percentages to the noncustodial parent’s adjusted gross income: 14% for one child, 20% for two children, 22% for three children, 24% for four children, and 26% for five or more children. These are among the lowest percentage rates of any state using the percentage of income model. For example, a noncustodial parent with $4,000/month adjusted gross income and one child pays $560/month.

Until what age is child support paid in Mississippi?

Mississippi requires child support until the child reaches age 21 or is otherwise emancipated — one of the highest age thresholds in the country. Most states end support at 18 or upon high school graduation. This means Mississippi parents may pay or receive support for several years longer than parents in most other states.

Does Mississippi consider the custodial parent’s income?

Not directly in the formula. Mississippi’s percentage of income model looks only at the noncustodial parent’s adjusted gross income. However, the custodial parent’s earning capacity may be considered as a deviation factor if applying the guidelines would be unjust. This distinguishes Mississippi from the 41 states that use the income shares model, which combines both parents’ incomes.

What is the modification threshold in Mississippi?

Mississippi allows modification when applying the current guidelines to the noncustodial parent’s current income would produce a support amount differing from the existing order by 25% or more. This is a higher threshold than most states (which typically use 10-15%). A material change in circumstances — such as significant income change or change in the child’s needs — is also required.

How This Guide Was Researched

This guide was created by reviewing publicly available legal information from official state statutes, judiciary websites, court resources, and family law publications. The goal is to explain family law topics in plain English so readers can better understand the process before speaking with an attorney.

Sources and Legal References

This guide is based on publicly available legal information and official sources, including:

• Mississippi state statutes and family law codes
• Mississippi judicial branch website and court resources
• Official Mississippi court forms and filing instructions
• Mississippi child support guideline publications
• State bar association and legal aid resources

Official Mississippi Resources

• Mississippi Chancery Courts
• Mississippi Courts – Civil Legal Assistance

For more about how we research our guides, see our editorial policy and sources methodology.

Related Guides

Learn more about related family law topics:

• Child support guidelines by state
• Child support enforcement
• Child support by state
• How to file for divorce
• Child custody laws explained
• Modifying child support
• Divorce laws by state

Last updated: March 2026. This guide summarizes general legal information based on publicly available sources and is provided for educational purposes only. It does not constitute legal advice. For advice specific to your situation, consult a licensed attorney in your state.