Support in Mississippi (2026)

Child Support to Age 21: Mississippi’s Extended Obligation

One of the most distinctive features of Mississippi’s child support system is that the obligation continues until the child turns 21 — not 18, as in most states. Under Miss. Code Ann. Section 93-11-65, Mississippi is one of only a handful of states that extend the support obligation beyond the child’s 18th birthday as a matter of law (rather than by agreement or for college expenses).

This means that a non-custodial parent in Mississippi can expect to pay child support for three additional years compared to most other states. The support obligation continues until the child turns 21 unless the child is emancipated, marries, enters military service, or otherwise becomes self-supporting.

The age-21 rule has significant financial implications for both parents and should be factored into any long-term financial planning in a Mississippi custody or divorce case.

The Percentage-of-Income Model

Mississippi uses a percentage-of-income model established under Miss. Code Ann. Section 43-19-101 that is fundamentally different from the income shares model used by most states. In Mississippi, the child support obligation is based on the non-custodial parent’s adjusted gross income only — both parents’ incomes are not combined.

The guidelines apply fixed percentages of the non-custodial parent’s adjusted gross income based on the number of children:

• 1 child: 14%
• 2 children: 20%
• 3 children: 22%
• 4 children: 24%
• 5 or more children: 26%

The non-custodial parent’s adjusted gross income includes wages, salaries, commissions, bonuses, self-employment income, pensions, Social Security benefits, workers’ compensation, unemployment benefits, disability payments, rental income, dividends, interest, and other recurring income. The court may impute income to a parent who is voluntarily unemployed or underemployed without just cause.

Costs for health insurance, work-related child care, and extraordinary expenses may be added to the basic obligation.

For a general overview of how child support models compare, see our guide on how child support is calculated. You can also estimate your potential obligation using our child support calculator.

Deviations from the Guidelines

The guidelines create a rebuttable presumption that the calculated amount is correct. However, the court may deviate if strict application would be unjust or inappropriate. Grounds for deviation include:

• Extraordinary medical, psychological, or educational expenses of the child
• Independent income of the child
• The earning capacity of each parent
• Seasonal variations in income or expenses
• The age and special needs of the child
• The particular shared parenting arrangement and related expenses
• The total available assets of the non-custodial parent, custodial parent, and child
• Any other adjustment needed to achieve an equitable result

Any deviation must be supported by written findings of fact explaining why the guidelines amount is unjust or inappropriate.

The Role of Fault in Alimony

Mississippi is one of the states where fault plays a significant role in alimony determinations. A spouse whose misconduct contributed to the breakdown of the marriage may receive less favorable treatment in an alimony award. Conversely, a spouse who was faithful and not at fault may receive more generous consideration.

This fault-relevance interacts with Mississippi’s consent requirement for no-fault divorce in an important way: if a spouse refuses to consent to an irreconcilable differences divorce, the other spouse must prove a fault-based ground, and the findings of fault from that proceeding may directly affect the alimony outcome. This linkage between divorce grounds and financial consequences creates strategic dynamics that are distinctive to Mississippi.

Five Types of Alimony

Mississippi courts may award alimony under Miss. Code Ann. Section 93-5-23. The Mississippi Supreme Court recognized multiple distinct types in Armstrong v. Armstrong, 618 So. 2d 1278 (Miss. 1993):

• Periodic alimony. Ongoing regular payments designed to provide support. Modifiable upon a material change of circumstances. Terminates upon the death of either party or the remarriage of the recipient.
• Lump-sum alimony. A fixed total amount paid at once or in installments. Once ordered, lump-sum alimony is not modifiable and is not affected by remarriage. This finality makes it a strategic choice when both parties want certainty.
• Rehabilitative alimony. Support for a defined period designed to help the receiving spouse obtain education, training, or employment to become self-supporting.
• Reimbursement alimony. Compensation for contributions one spouse made to the other’s education or career advancement during the marriage — for example, a spouse who worked to put the other through professional school.
• Transitional alimony. Short-term support to assist a spouse in adjusting to the financial changes of post-divorce life.

The court considers the Armstrong factors, which substantially overlap with the Ferguson property division factors, including income, earning capacity, health, needs, marriage length, standard of living, and fault.

Lump-Sum Alimony: A Mississippi Strategic Tool

Mississippi’s lump-sum alimony deserves special attention because its non-modifiable, non-terminable nature makes it a uniquely powerful tool. Unlike periodic alimony — which ends upon remarriage and can be modified if circumstances change — lump-sum alimony is fixed once ordered. It is not affected by the recipient’s remarriage, cohabitation, or change in financial circumstances.

This permanence makes lump-sum alimony attractive to recipients who want certainty and to payors who want to avoid ongoing obligations. It can also function as a supplement to property division when the equitable distribution of assets alone does not adequately address the financial imbalance between the parties.

However, the non-modifiable nature also means that neither party can seek adjustment if circumstances change dramatically. Courts carefully consider whether lump-sum or periodic alimony better serves the interests of both parties.

Modifying or Terminating Child Support

Either parent may petition for modification by demonstrating a material change in circumstances that is substantial and continuing. The party seeking modification bears the burden of proof. Significant changes in income, changes in the child’s needs, or changes in the custody arrangement may warrant modification.

Any modification takes effect from the date the petition for modification is filed. Arrearages accrued before that date cannot be retroactively reduced.

Enforcement of Child Support Orders

The Mississippi Department of Human Services (MDHS) and the courts have broad enforcement authority:

• Income withholding from wages and other income sources
• Interception of state and federal tax refunds
• Suspension of driver’s licenses, professional licenses, and recreational licenses
• Liens on real and personal property
• Passport denial for arrearages exceeding $2,500
• Reporting to credit bureaus
• Contempt of court proceedings, which may result in fines or incarceration
• Incarceration for willful nonpayment of support

Modification and Termination of Alimony

Periodic alimony may be modified upon a showing of a material change of circumstances. Periodic alimony terminates upon the death of either party or the remarriage of the recipient. Lump-sum alimony, once ordered, is not modifiable and not affected by subsequent events. Rehabilitative and transitional alimony may be modified if circumstances change during the support period.

When to Seek Legal Guidance

Mississippi’s percentage-of-income model for child support, the age-21 obligation, the role of fault in alimony, and the five categories of alimony create a detailed but complex framework. If you are evaluating child support or alimony in Mississippi, consider scheduling a free consultation with an experienced family law professional to discuss your options.

Frequently Asked Questions

How is child support calculated in Mississippi?

Mississippi uses a percentage-of-income model under Miss. Code Ann. Section 43-19-101. Fixed percentages are applied to the non-custodial parent’s adjusted gross income: 14% for one child, 20% for two, 22% for three, 24% for four, and 26% for five or more. Health insurance, work-related childcare, and extraordinary expenses may be added to the basic obligation.

How long does child support last in Mississippi?

Child support in Mississippi continues until the child turns 21 — one of only a few states that extend the obligation beyond age 18. Under Miss. Code Ann. Section 93-11-65, support lasts to age 21 unless the child is emancipated, marries, enters military service, or becomes self-supporting.

Does fault affect alimony in Mississippi?

Yes. Mississippi courts consider the fault or misconduct of each party when determining alimony. A spouse whose conduct contributed to the breakup may receive less favorable treatment. The court evaluates the need of the requesting spouse, the paying spouse’s ability to pay, and the standard of living during the marriage.

What types of alimony does Mississippi recognize?

Mississippi recognizes periodic alimony (ongoing payments, modifiable, terminates on remarriage), lump-sum alimony (fixed amount, not modifiable, not affected by remarriage), rehabilitative alimony (time-limited for self-sufficiency), reimbursement alimony (compensation for supporting a spouse’s education), and transitional alimony (short-term adjustment assistance).

What makes lump-sum alimony different from periodic alimony?

Lump-sum alimony is a fixed total amount that is not modifiable and not affected by the recipient’s remarriage or change in circumstances. Periodic alimony is ongoing, can be modified upon a material change of circumstances, and terminates upon the recipient’s remarriage or either party’s death. The choice between the two has significant long-term strategic implications.

Why does Mississippi extend child support to age 21?

Mississippi is one of a small number of states where the child support obligation continues until the child turns 21 as a matter of law (Miss. Code Ann. Section 93-11-65). This reflects Mississippi’s legislative judgment that parental financial responsibility should extend beyond the age of majority, providing support during the years when many young adults are still establishing independence.

How This Guide Was Researched

This guide is based on a thorough analysis of Miss. Code Ann. Section 43-19-101 (the percentage-of-income model and fixed percentage guidelines), Section 93-11-65 (child support duration to age 21), and Section 93-5-23 (alimony authority). The five categories of alimony were drawn from the Mississippi Supreme Court’s decision in Armstrong v. Armstrong, 618 So. 2d 1278 (Miss. 1993), and the property division factors from Ferguson v. Ferguson, 639 So. 2d 921 (Miss. 1994). We consulted Mississippi Department of Human Services child support enforcement resources, Mississippi Chancery Court publications, the Mississippi Legislature’s online code database, and Mississippi State Bar Association family law section materials.

Sources and Legal References

• Miss. Code Ann. Section 43-19-101 — Child support guidelines, percentage-of-income model, and fixed percentages by number of children
• Miss. Code Ann. Section 93-11-65 — Child support duration to age 21, emancipation, and termination
• Miss. Code Ann. Section 93-5-23 — Alimony authority, types, and factors
• Armstrong v. Armstrong, 618 So. 2d 1278 (Miss. 1993) — Landmark case establishing five categories of alimony
• Ferguson v. Ferguson, 639 So. 2d 921 (Miss. 1994) — Equitable distribution factors (overlapping with alimony considerations)

Official Mississippi Resources

• Mississippi Chancery Courts
• Mississippi Courts — Civil Legal Assistance
• Mississippi Department of Human Services — Child Support
• Mississippi Legislature — Mississippi Code

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

Related Guides

• Mississippi child support guidelines — Detailed breakdown of Mississippi’s percentage-of-income calculations
• Divorce in Mississippi — Mississippi’s consent requirement and 12 fault-based grounds
• Child custody in Mississippi — The Albright factors and age-12 preference threshold
• Mississippi divorce grounds — Deep dive into Mississippi’s distinctive divorce framework
• How child support is calculated — Comparing percentage-of-income to income shares models
• Child support enforcement — How enforcement works nationally
• How alimony works — Comparing spousal support across states