A Class K exemption applies when a property becomes unoccupied because the person who is liable for Council Tax is a full‑time student who has moved away to live elsewhere for the purpose of their studies.
This exemption exists to ensure that students, whose education requires them to live away from their main home, are not charged Council Tax on a property they are no longer occupying.
Class K is one of the nationally prescribed Council Tax exemption classes recognised in official Council Tax guidance and Parliamentary research.