R12: Is there a way to apply % tax on single item level not on line level.

Hi,

By default oracle multiplies item price and quantity on the line, rounds it to currency roundup and counts % of tax from this value + rounds it.

Is there possibility to apply tax on single item, round it to currency roundup and than multiply it by quantity.

Something like this:

round (round (item_price * %tax) * quantity)