▁slightly , ▁with ▁Wales ▁setting ▁a ▁different ▁Un iform ▁Business ▁rate ▁multip lier , ▁and ▁different ▁relief s . ▁ ▁Bill ing ▁and ▁relief s ▁▁ ▁For ▁each ▁property ▁in ▁the ▁rating ▁list ▁for ▁their ▁area , ▁the ▁local ▁authority ▁calcul ates ▁and ▁issues ▁a ▁bill , ▁which ▁it ▁is ▁responsible ▁for ▁collect ing , ▁with ▁powers ▁to ▁purs ue ▁payment . ▁The ▁rate able ▁value ▁is ▁multip lied ▁by ▁the ▁Un iform ▁Business ▁R ate , ▁referred ▁to ▁in ▁legisl ation ▁as ▁the ▁non - dom estic ▁rating ▁multip lier , ▁to ▁arrive ▁at ▁an ▁annual ▁bill . ▁For ▁example , ▁a ▁rate able ▁value ▁of ▁£ 1 0 , 0 0 0 ▁and ▁a ▁multip lier ▁of ▁ 4 0 p ▁would ▁produce ▁an ▁annual ▁bill ▁of ▁£ 4 , 0 0 0 . ▁The ▁bill ▁usually ▁requires ▁payment ▁in ▁instal ments ▁over ▁the ▁financial ▁year . ▁ ▁Business ▁rates ▁multip liers ▁▁ ▁The ▁multip lier ▁is ▁set ▁by ▁central ▁government , ▁and ▁is ▁uniform . ▁Power ▁to ▁set ▁the ▁multip lier ▁in ▁Wales ▁has ▁been ▁de vol ved ▁to ▁the ▁National ▁Assembly ▁for ▁Wales . ▁A ▁special ▁case ▁exists ▁where ▁a ▁defined ▁special ▁authority ▁can ▁set ▁its ▁own ▁multip lier ▁within ▁cent r ally ▁defined ▁limits . ▁The ▁only ▁currently ▁qual ifying ▁authority ▁is ▁the ▁City ▁of ▁London . ▁The ▁multip lier ▁is ▁increased ▁ann ually , ▁in ▁April . ▁The ▁increase ▁is ▁c apped ▁at ▁the ▁same ▁proportion ▁as ▁the ▁increase ▁in ▁the ▁Ret ail ▁Pr ices ▁Index ▁for