PREPAYMENT

 Hi

Client requirement when selects particular invoice type the tax should be default

Example:-  tax are like 18%;15% & 3%

he needs tax for standard invoice type is 18%

&prepayments  3%

 whenever he selects in Invoice work bench  invoice type suppose prepayment tax should default 3 %,is it possible to set for each specific type of invoice type  tax is default,if so pls reply for solution really appreciatable.

Thanks