Apply discounts before taxes doesnt work correctly

-- url of the page with the problem -- : http://pastastacija[dot]lv/lv/ieg%C4%81d%C4%81ties-kodu
-- HikaShop version -- : HikaShop Business 2.2.2
-- Joomla version -- : 2.5.14
-- PHP version -- : 5.24

Hello! Our accountant pointed out that there is slight error in the way how hikashop applys bulk-order discounts. Problem, as it seems, is that option "Apply discounts After/Before taxes" doesn't work as it should. Please see attached order invoice as it's generated now:

Nicolas, thanks for Your advice, but I have tried ALL possible setting combinations, and this still happens. Could You be so kind and check this out - I presume that I'm not the only one with this problem. Please see man current configuration below:

Just to be sure - what I need is that "TOTAL" for order would be as follows:

TOTAL = (Total without tax - Discount) + ((Total without tax - Discount)*tax)

so as in example in the first post -

18.69 = (16.45 - 1.00) + ((16.45 - 1.00) * 0.21)

Could You please tell me, where the Total calculation logic is stored to make it work like in my example above?

Any ideas? I presume it's really small change in existing calculation continuity, so could Nicolas point the file to start digging?

Temporary workaround that I'm using right now:

Through "Hikashop settings > Display > Views" option I edited "Checkout > Cart" template.
Replaced line

echo $this->currencyHelper->format($this->full_total->prices[0]->price_value_with_tax,$this->full_total->prices[0]->price_currency_id);

$pricevar = $this->currencyHelper->format($this->full_total->prices[0]->price_value);
              $price= str_replace(',','.',$pricevar);
              $taxvar = $this->currencyHelper->format($tax->tax_amount);
              $tax= str_replace(',','.',$taxvar);
              
              $total = $price + $tax;
              
              $result = round($total, 2); 
              echo '' .$result. ' EUR';

Any updates?

Hi,

We updated Hikashop recently, and made some changes on discounts applied before / after tax. Download the very latest version on our website, and install it (without changes you made). You shouldn't have any problem with those discounts anymore.