  We calculate an upper bound on the lightest Higgs boson mass in the
supersymmetric singlet majoran model containing SU(2) X U(1) singlet right
handed neutrino fields and a chiral singlet having two units of lepton number.
We show that although the singlet vacuum expectation values and supersymmetry
breaking masses do not decouple from the upper bound, even at the tree level,
their effect is small, thereby reducing the bound to the corresponding bound in
the Minimal Supersymmetric Standard Model. Radiative corrections to the bound
are similar to those in the minimal model. We also show that the couplings of
the lightest Higgs boson to the majorans are suppressed in this model.
