Beneficial

Ben·e·fi·cial

Beneficial

a.
  1. Conferring benefits; useful; profitable; helpful; advantageous; serviceable; contributing to a valuable end; -- followed by to.
    The war which would have been most beneficial to us.
  2. Receiving, or entitled to have or receive, advantage, use, or benefit; as, the beneficial owner of an estate. (Law)
  3. King. [Obs.]