Merge branch 'dev'

common/helpers/Price.php

             return $priceWithoutTax + $vat;
         }
 
-        public static function getVat($priceTotalWithoutTax, $taxRate, $taxCalculationMethod = Document::TAX_CALCULATION_METHOD_DEFAULT)
+        public static function getVat($priceWithoutTax, $taxRate, $taxCalculationMethod = Document::TAX_CALCULATION_METHOD_DEFAULT)
         {
-            $vat = $priceTotalWithoutTax * $taxRate;
+            $vat = $priceWithoutTax * $taxRate;
 
             if($taxCalculationMethod == Document::TAX_CALCULATION_METHOD_SUM_OF_ROUNDINGS) {
                 $vat = self::round($vat);
                 return number_format(( ($number * 100)) / 100, 2) ;
         }
 
-}
+}

common/models/Order.php

                 $productOrder->taxRate->value,
                 $taxCalculationMethod
             ) * $productOrder->quantity;
-        $this->addVat($typeTotal, $price * $productOrder->quantity, $productOrder->taxRate, $taxCalculationMethod);
+        $this->addVat($typeTotal, $price, $productOrder->quantity, $productOrder->taxRate, $taxCalculationMethod);
     }
 
-    public function addVat($typeTotal, $priceTotalWithoutTax, $taxRate, $taxCalculationMethod)
+    public function addVat($typeTotal, $priceWithoutTax, $quantity, $taxRate, $taxCalculationMethod)
     {
         $fieldName = $this->getFieldNameAmount($typeTotal, 'vat');
 
             $this->$fieldName[$taxRate->id] = 0;
         }
 
-        $this->$fieldName[$taxRate->id] += Price::getVat($priceTotalWithoutTax, $taxRate->value, $taxCalculationMethod);
+        $this->$fieldName[$taxRate->id] += Price::getVat($priceWithoutTax, $taxRate->value, $taxCalculationMethod) * $quantity;
     }
 
     public function getTotalVat($typeTotal = self::AMOUNT_TOTAL)