»Ê¹ÚÌåÓýapp

Budget 2007 announced a business tax reform package including the gradual withdrawal of IBAs and ABAs over four years. Legislation was introduced in FA08 to give effect to those changes. »Ê¹ÚÌåÓýapp phased withdrawal of IBA writing down allowances had effect for chargeable periods ending on or after 1 April 2008 for businesses within the charge to CT and 6 April 2008 for businesses within the charge to IT. This phasing out does not apply to EZ WDAs. »Ê¹ÚÌåÓýappy continue in full until the cut-off date. »Ê¹ÚÌåÓýappre are no IBA writing down allowances for the financial year beginning on 1 April 2011 and subsequent years.

CAA01/S281

A commercial building is a building that is used for the purposes of a trade, profession or vocation. A building used as an office is also a commercial building.

A building in use as or, as part of a dwelling house is not a commercial building.