La. R.S. 9:1852

An unconditional principal and income interest in trust, with income payable not less than annually for the life of the beneficiary, satisfies the marital portion to the same extent as would the full ownership not in trust of the same property; however, during the term of the trust, the trustee may pay principal from the trust property for support, maintenance, education, medical expenses, or welfare of the beneficiary and, upon termination of the portion of the trust that affects the marital portion, the principal shall be delivered to the surviving spouse or his heirs, legatees, or assigns free of trust.