It may be constituted for the benefit of a third party, although the price is provided by another person.
In the latter case, although it has the characteristics of a liberality, it is not subject to the forms required for gifts; except for the cases of reduction and nullity set out in Article 1970.
When the annuity is set up by one or both spouses and is stipulated to be reversible in favour of the surviving spouse, the reversibility clause may have the characteristics of a gift or those of a deed for valuable consideration. In the latter case, the compensation or indemnity owed by the beneficiary of the reversion to the community or to the estate of the predeceased is equal to the value of the reversion of the annuity. Unless the spouses agree otherwise, the reversion is presumed to have been granted free of charge.