Louisiana Act 605 Makes Equal 50/50 Custody the Default Standard
Louisiana Act 605 Makes Equal 50/50 Physical Custody the Default Standard
Louisiana Act 605 (HB 1239) rewrites La. R.S. 9:335(A)(2)(b) so physical custody "shall" be shared equally between parents, replacing language that it merely "should" be shared equally where feasible. The change takes effect August 1, 2026.
Information last verified on August 5, 2026. This is a developing story; we update it as the record changes.
Jurisdiction scope: This article covers Louisiana law only. Louisiana's custody framework, including La. R.S. 9:335 and the domiciliary-parent concept, differs from other states' schemes. See our Louisiana child custody laws guide for the broader statutory picture, and consult a licensed Louisiana family law attorney for any specific case.
What Happened
Act 605 originated as House Bill 1239 in the Louisiana Legislature's 2026 Regular Session, filed as a substitute for an earlier, broader bill, HB 473, by the same sponsor, Rep. Kyle Green Jr. (D-Marrero) (bill history). The engrossed instrument describes the bill as an act "to amend and reenact R.S. 9:335(A)(2)(b), relative to child custody; to provide relative to the best interest of a child; to provide relative to equal custody; and to provide for related matters" (HLS 26RS-3549, engrossed text).
The House approved the bill on final passage on April 21, 2026, by a reported vote of 101 yeas to 0 nays, with 4 members absent. It cleared the Senate without further amendment and became law without the governor's signature, a route the Louisiana Constitution allows when the governor takes no action within the applicable period. The Secretary of State's office designated it Act 605 of the 2026 Regular Session.
The single operative change is narrow: it amends only La. R.S. 9:335(A)(2)(b), the subsection governing joint custody implementation orders (statute text). Before Act 605, that subsection provided that, to the extent it is feasible and in the best interest of the child, physical custody of the children "should" be shared equally. Act 605 changes "should" to "shall." It does not touch La. C.C. art. 131, art. 132, or art. 134, the Civil Code articles that set the best-interest standard and its factors; those provisions are unaffected.
Under the Louisiana Constitution's default rule for acts of a regular session that do not specify their own effective date, Act 605 takes effect August 1, 2026 (Louisiana Legislature, effective dates of acts).
What the Law Actually Says
La. R.S. 9:335 governs how a Louisiana court structures a joint custody decree once joint custody has been awarded. It requires the court to designate, absent an agreement or good cause otherwise, a domiciliary parent, the parent with whom the child primarily resides and who has authority to make day-to-day decisions unless the implementation order says otherwise, while the other parent has physical custody during periods that assure frequent and continuing contact with the child.
Subsection (A)(2)(b) is where Act 605 acts. The prior text read that physical custody "should be shared equally" to the extent feasible and in the child's best interest, precatory language that courts and practitioners generally read as a preference or default posture rather than a command. The amended text makes that a directive: physical custody "shall be shared equally," subject to the same feasibility and best-interest qualifiers that were already in the statute. That shift, from a permissive "should" to a mandatory "shall," is what creates a stronger, though still rebuttable, presumption of equal time for both parents in a joint custody arrangement.
Importantly, the statute's own escape valve survives unchanged: equal sharing still yields where a court finds it is not feasible, or not in the child's best interest. That finding sits inside the broader standard set by La. C.C. art. 131, which directs a court to award custody "in accordance with the best interest of the child," and art. 134, which lists the factors a court weighs in that determination, from the potential for abuse to each parent's capacity to provide a stable home. Act 605 raises the floor for how a court approaches the starting point of a custody analysis; it does not replace the best-interest inquiry that governs the outcome. Readers with a Louisiana custody matter can review the state's fuller framework in our Louisiana child custody laws guide, or the national child custody hub for how other states structure the same questions.
Analysis: Why This Matters
The following is analysis from the Recording Law Editorial Team.
The practical weight of Act 605 turns entirely on the difference between "should" and "shall" in a statute a judge applies daily. A precatory standard leaves room for a court to treat equal sharing as one reasonable outcome among several; a mandatory standard positions equal sharing as the expected result unless a party affirmatively shows why it should not apply. That is the definition of a rebuttable presumption: the burden of moving off the default now falls more squarely on the party seeking something other than a 50/50 split, rather than on the party asking for it.
Louisiana is not acting in isolation. Mississippi enacted its own move toward a 50/50 custody presumption via HB 1662, effective July 1, 2026, and Missouri has separately moved its custody framework toward equal parenting time as a starting point in recent years. Taken together, these changes reflect a broader legislative trend across multiple states toward treating shared physical custody as the default arrangement rather than an outcome parents must specially negotiate for. None of these statutes eliminates judicial discretion; each preserves a best-interest override, and each still requires a court to make individualized findings when it departs from the equal-time default. Act 605 does not predict how any specific Louisiana court will rule in any specific case, and this analysis draws no conclusion about outcomes in pending or future litigation.
How This Affects You
This section is general legal information, not advice about any individual's case. Two points matter for anyone with a Louisiana custody matter.
First, Act 605 does not automatically reopen, modify, or vacate a custody order already in place before August 1, 2026. Louisiana's modification standard, requiring a party to show a material change in circumstances and that modification serves the child's best interest, still applies to any request to change an existing decree. The new statutory language governs custody determinations in proceedings filed or heard on or after the effective date; it is not self-executing against orders that predate it.
Second, the best-interest standard under La. C.C. art. 131 and art. 134 remains the overriding test in every Louisiana custody case, joint or otherwise. Act 605 changes the default starting point for a joint custody implementation order; it does not remove a court's authority to weigh the statutory best-interest factors and depart from equal sharing where the facts warrant it. A parent evaluating how this change might affect a pending or future filing should consult a licensed Louisiana family law attorney about their specific circumstances.
This is general legal information, not legal advice. It covers Louisiana law only, is not a substitute for individualized counsel, and was verified against primary legislative sources as of August 5, 2026. Anyone with a pending or contemplated Louisiana custody matter should consult a licensed Louisiana family law attorney about their specific facts.
Related articles
- Louisiana child custody laws guide, for the state's full custody framework beyond Act 605
- National child custody hub, for how other states structure joint and physical custody
- Mississippi's 50/50 custody law, HB 1662, a sibling state move effective July 1, 2026
- Missouri child custody laws guide, another state that has moved toward equal parenting time
Last updated: 2026-08-05. This is a developing story; details verified as of 2026-08-05.
Frequently Asked Questions
Is Louisiana now a 50/50 custody state?
Louisiana law now directs that physical custody "shall" be shared equally in a joint custody implementation order, under La. R.S. 9:335(A)(2)(b) as amended by Act 605, unless a court finds equal sharing is not feasible or not in the child's best interest. It is a strengthened, rebuttable presumption toward equal time, not an absolute mandate, and the overriding best-interest standard under La. C.C. art. 131 still governs the outcome.
Does Act 605 change my existing Louisiana custody order?
No. Act 605 does not automatically modify, reopen, or vacate custody orders that were already in place before its August 1, 2026 effective date. A parent seeking to change an existing order still has to meet Louisiana's separate modification standard, generally a material change in circumstances and a showing that the change serves the child's best interest.
When does the Louisiana equal custody law take effect?
Act 605 takes effect August 1, 2026, Louisiana's default effective date for regular-session legislation that does not set its own date, per the Louisiana Legislature's published effective-dates schedule.
Can a Louisiana judge still order unequal physical custody?
Yes. La. R.S. 9:335(A)(2)(b), as amended by Act 605, still allows a court to depart from equal sharing where it finds equal physical custody is not feasible or not in the specific child's best interest. That finding is made under the broader best-interest standard and factors in La. C.C. art. 131 and art. 134, which Act 605 does not change.
What exactly did Act 605 (HB 1239) change in Louisiana law?
Act 605 amends a single subsection, La. R.S. 9:335(A)(2)(b), replacing language that physical custody "should" be shared equally to the extent feasible with language that it "shall" be shared equally, subject to the same feasibility and best-interest qualifiers. It does not amend La. C.C. art. 131, art. 132, or art. 134.
Who sponsored Louisiana's equal custody bill?
Rep. Kyle Green Jr. (D-Marrero) sponsored HB 1239 as a substitute for his earlier HB 473. The House passed HB 1239 101-0, with 4 members absent, on April 21, 2026, and it became Act 605 after becoming law without the governor's signature.
Does Act 605 apply outside Louisiana?
No. Act 605 amends only Louisiana's joint custody statute, La. R.S. 9:335. It has no effect on custody law in other states. Mississippi separately adopted a similar 50/50 custody presumption effective July 1, 2026 under its own HB 1662, and other states have made comparable changes, but each state's custody statute and standard is distinct.
Sources and References
- HB 1239 (2026 Regular Session), bill history and status(legis.la.gov).gov
- HLS 26RS-3549, engrossed text of HB 1239, amending R.S. 9:335(A)(2)(b)(legis.la.gov).gov
- La. R.S. 9:335, Joint custody decree and implementation order (current codified text)(legis.la.gov).gov
- Louisiana Legislature, Effective Dates of Acts (2026 Regular Session default rule)(legis.la.gov).gov
- La. C.C. art. 131, Court to determine custody (best interest standard)(legis.la.gov).gov
- La. C.C. art. 134, Factors in determining child's best interest(legis.la.gov).gov