i want to calculate tax on total amount not itemwise and the structure of tax is like this - if the total amount of 3 different item is 100000 then i want to calculate 16% tax on total amount which is 16000,then i want to calculate 3% of tax on 16000 ,means 480 .now i want to calculate 3% of tax on amount 10000016000480=116480.
and i also want to show this structure on the form,seeking for foram members help.
Regards