How to apply taxes after discount?

[jayb174]

Hello,

 

I'm currently using Prestashop 1.4.8.2 in the US and the invoice and order details is showing that it is calculating the discount after taxes is applied. For example it is calculating like this

 

$100 price + 7% tax = $107 - 20% discount = $85.6

 

I want it to calculate the discount before taxes as follow,

 

$100 price - 20% discount = $80 + 7% = $87

 

Is there a way to fix this?

[nickzampieri]

Did you ever figure this out? We are trying to accomplish the same thing.