  We investigate the Two-Higgs-Doublet-Standard Model-Axion-Seesaw-Higgs-Portal
inflation (2hdSMASH) model consisting of two Higgs doublets, a Standard Model
(SM) singlet complex scalar and three SM singlet right-handed Majorana
neutrinos that can address the strong CP problem, dark matter, neutrino masses,
baryogenesis and inflation. We identify inflationary directions consistent with
successful inflation and theoretical constraints including perturbative
unitarity, boundedness-from-below conditions and high scale validity upto the
PLANCK scale. Further, we present representative benchmark points satisfying
theoretical and experimental constraints potentially accessible at future
colliders.
