Mississippi HB 1662: 50-50 Custody Presumption Effective July 1, 2026

Mississippi HB 1662 creates a rebuttable presumption that equal (50-50) joint physical custody serves a child's best interest in every divorce and rewrites child support to compare both parents' incomes, effective July 1, 2026. Parents seeking majority timesharing must now present specific evidence—documented domestic violence, substance abuse, or inability to provide adequate care—to overcome the presumption.

Why This Matters Legally

HB 1662 reverses the default starting point in Mississippi custody cases. Before July 1, 2026, chancery courts weighed the Albright factors from a neutral posture with no thumb on the scale toward any arrangement. Under the new law, the court begins with the assumption that a 50-50 split serves the child, and the parent opposing that split carries the burden to rebut it.

This is a burden-shifting change, not merely a preference. A rebuttable presumption means the equal-custody outcome stands unless the objecting parent introduces specific, admissible evidence—documented domestic violence, substance abuse, or a demonstrated inability to provide adequate care. Vague concerns, general distrust, or a parent's preference for majority time will not satisfy the standard. The evidence must be concrete and tied to the child's welfare. Learn more about how child custody arrangements work and what courts actually evaluate.

The support rewrite is equally consequential. Mississippi historically used a flat percentage-of-income model tied only to the paying parent's adjusted gross income—14% for one child, 20% for two, and rising from there under Miss. Code Ann. § 43-19-101. HB 1662 moves toward an income-shares framework that compares both parents' incomes and accounts for the time each parent spends with the child. When custody is closer to equal, the support calculation changes accordingly.

How Mississippi Law Handles This

Mississippi custody decisions have long turned on the Albright factors, the twelve-factor best-interest test the Mississippi Supreme Court established in Albright v. Albright, 437 So. 2d 1003 (Miss. 1983). Those factors—including the child's age, health, continuity of care, and each parent's stability—still apply. HB 1662 does not delete them. Instead, it layers a presumption on top: the court applies the Albright analysis starting from equal timesharing and moves off that baseline only when the evidence rebuts the presumption.

Mississippi remains one of the states where fault-based and no-fault divorce coexist. A no-fault divorce still requires both spouses to consent under Miss. Code Ann. § 93-5-2, and contested cases proceed on statutory fault grounds under Miss. Code Ann. § 93-5-1. The custody presumption in HB 1662 operates independently of how the divorce itself is granted—it governs the parenting outcome regardless of the ground for divorce. For the full sequence of steps, review our overview of the divorce process in Mississippi.

The income-shares support change matters most in shared-custody homes. Under the old flat-percentage model, a noncustodial parent paying 14% for one child paid that amount regardless of how many overnights they exercised. The new comparison of both incomes, combined with a near-equal parenting schedule, can reduce or restructure the transfer between households. Parents can estimate the difference using our child support calculator and map their overnights with the parenting time calculator.

Existing orders are not automatically rewritten. HB 1662 changes the default for new cases filed on or after July 1, 2026. Parents with orders predating that date generally must file for modification and show a material change in circumstances before a court will revisit custody or support under the new standard. A statutory change in the law can itself support a modification request, but that determination rests with the chancery court on the facts of each case.

Practical Takeaways

1. Assume equal timesharing is the starting point. If you are divorcing on or after July 1, 2026, plan your parenting proposal around a 50-50 schedule unless you have documented evidence justifying a different split. Building a workable parenting plan early strengthens your position.

2. Gather specific evidence if you seek majority time. General complaints will not rebut the presumption. Documented domestic violence, substance abuse records, protective orders, or proof of inadequate care are the categories courts will weigh. Preserve records, dates, and third-party documentation.

3. Recalculate your child support exposure. The shift from flat percentages to an income-shares comparison changes the math for both parents. Run your numbers under the new framework before you agree to any settlement figure, and confirm both incomes are accurately reported.

4. Review existing orders for modification eligibility. If you have a pre-July 2026 order and your circumstances have changed, consult an attorney about whether the new law supports a modification petition in your county's chancery court.

5. Understand relocation limits under the new baseline. Equal timesharing makes a proposed move harder to accommodate. If relocation is on the horizon, read about how relocation affects custody before filing, because a move can trigger the rebuttal analysis.

6. Map your next steps. A personalized divorce roadmap can help you sequence filing, custody, and support decisions in the correct order for Mississippi.

If you are navigating a Mississippi custody or support matter under HB 1662, a local family law attorney can evaluate how the new presumption applies to your specific facts. You can find a divorce attorney serving your county to discuss your options.

This article discusses recent news and provides general legal commentary. It does not constitute legal advice. Every case is unique. Consult a qualified family law attorney for advice specific to your situation.