We study the scaling properties of Higgs-Yukawa models.
Using the technique of Finite-Size Scaling, we are able to
derive scaling functions that describe the observables of the model
in the vicinity of a Gaussian fixed point.
A feasibility study of our strategy is performed for the pure
scalar theory in the weak-coupling regime.
Choosing the on-shell renormalisation scheme gives us an advantage to fit
the scaling functions against lattice data with only a small
number of fit parameters.
can be used to determine the universality of the observed
phase transitions, and thus play an essential role in future
investigations of Higgs-Yukawa models, in particular in the strong Yukawa