In this work, we investigated the structures, energetics and electronic band alignments of clean Y 2 Ti 2 O 5 S 2 nonpolar surfaces with a maximum Miller index of 2 using DFT calculations, utilising both generalised gradient approximation and hybrid functionals. We outline the main relaxation patterns of the surfaces, which primarily occur when the TiO 5 S octahedra are cleaved along the O ax -Ti-S bond when surfaces are created.