The bill may also be reduced by having one or more reliefs applied to it, such as reliefs for empty properties, or for charities. Reliefs are administered by the local authority and they do not affect the rateable value of a property. While some are mandatory, others are at the discretion of the local authority, who also have to bear, in whole or in part, the costs of some reliefs. In addition to specific reliefs, a hardship relief is available at the discretion of the local authority. A relief on non-agricultural business on agricultural land or former agricultural buildings has been removed with effect from 14 August 2006.