Bilateral legal act

A bilateral legal act is one which requires the common will of two separate parties in order to exist (contracts, etc.). Note that the unilateral legal act should not be confused with the unilateral contract, which requires the common will of two parties, but only generates obligations for one of them.

Definitions provided under this section refer to the Belgian situation; unless specified otherwise. The texts are meant to summarize concepts in daily language and should not be considered as comprehensive or definite. We welcome suggestions for modifications or additions at