Kommunalfinanzen
A "non-dependant" is a person that the claimant is sharing accommodation with but is not a member of their own household (that is, not a partner, dependant, etc.), such as lodgers or joint tenants. Since it would be reasonable to expect non-dependants to contribute towards the Council Tax bill, Council Tax Benefit was reduced so that it only covered the claimant's hypothetical portion of the Council Tax bill.