how to add additional tax on total

Hi,
we have a new requirement to add an additional tax on total (after adding all further taxes).

for e.g
product price = 100
GST1  = 4% tax
GST2 = 4% tax
------------------
total = xyz
additional tax on total xyz = 1% tax
-------------------
final total

can any one suggest how to achieve this in nop commecre?

Regards,

You have to create two setting for this two tax percentage and modify the code of  GetTaxTotal method to add this calculation on it.

There is this multiple tax plugin for Canada which maybe usable for India
https://www.nopcommerce.com/en/multiple-taxes-canadian-taxes-foxnetsoft
There is also this discussion and possible plugin
See https://www.nopcommerce.com/en/boards/topic/48460/india-gst/page/3