La. Civ. Code art. 2343.1
Current with operative changes from the 2024 Third Special Legislative Session
The transfer by a spouse to the other spouse of a thing forming part of his separate property, with the stipulation that it shall be part of the community, transforms the thing into community property. As to both movables and immovables, a transfer by onerous title must be made in writing and a transfer by gratuitous title must be made by authentic act.
La. C.C. § 2343.1