  The issue of electroweak vacuum stability is studied in presence of a scalar
field which participates in modifying the minimal chaotic inflation model. It
is shown that the threshold effect on the Higgs quartic coupling originating
from the Higgs-inflaton sector interaction can essentially make the electroweak
vacuum stable upto the Planck scale. On the other hand we observe that the new
physics parameters in this combined framework are enough to provide deviation
from the minimal chaotic inflation predictions so as to keep it consistent with
recent observation by Planck 2015.
