Unilateral legal act

A unilateral legal act is a legal act resulting solely from the will of the party offering it, and does not require consent from anyone other than the offering party. The latter undertakes to accomplish a given service of their own accord, independently of the acceptance of another person.

Testaments, offers of sale and acknowledgements of debt are examples of unilateral legal acts.

Updated 05/03/2018

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