diff --git a/core/lib/Thelia/Core/Template/Loop/Address.php b/core/lib/Thelia/Core/Template/Loop/Address.php
index 757cc11b8..3ac9370f8 100755
--- a/core/lib/Thelia/Core/Template/Loop/Address.php
+++ b/core/lib/Thelia/Core/Template/Loop/Address.php
@@ -87,7 +87,7 @@ class Address extends BaseLoop
         $customer = $this->getCustomer();
 
         if ($customer === 'current') {
-            $currentCustomer = $this->request->getSession()->getCustomerUser();
+            $currentCustomer = $this->securityContext->getCustomerUser();
             if ($currentCustomer === null) {
                 return new LoopResult();
             } else {
diff --git a/core/lib/Thelia/Core/Template/Loop/Customer.php b/core/lib/Thelia/Core/Template/Loop/Customer.php
index 1a4b84105..ad801dc5f 100755
--- a/core/lib/Thelia/Core/Template/Loop/Customer.php
+++ b/core/lib/Thelia/Core/Template/Loop/Customer.php
@@ -80,7 +80,7 @@ class Customer extends BaseLoop
         $current = $this->getCurrent();
 
         if ($current === true) {
-            $currentCustomer = $this->request->getSession()->getCustomerUser();
+            $currentCustomer = $this->securityContext->getCustomerUser();
             if ($currentCustomer === null) {
                 return new LoopResult();
             } else {
diff --git a/core/lib/Thelia/Core/Template/Loop/Product.php b/core/lib/Thelia/Core/Template/Loop/Product.php
index 4d785b8b0..f52b314a9 100755
--- a/core/lib/Thelia/Core/Template/Loop/Product.php
+++ b/core/lib/Thelia/Core/Template/Loop/Product.php
@@ -34,6 +34,7 @@ use Thelia\Core\Template\Loop\Argument\Argument;
 use Thelia\Log\Tlog;
 
 use Thelia\Model\CategoryQuery;
+use Thelia\Model\CountryQuery;
 use Thelia\Model\Map\FeatureProductTableMap;
 use Thelia\Model\Map\ProductPriceTableMap;
 use Thelia\Model\Map\ProductSaleElementsTableMap;
@@ -333,10 +334,10 @@ class Product extends BaseI18nLoop
         foreach($isProductPriceLeftJoinList as $pSE => $isProductPriceLeftJoin) {
             $booleanMatchedPriceList[] = 'CASE WHEN `' . $pSE . '`.PROMO=1 THEN `' . $isProductPriceLeftJoin . '`.PROMO_PRICE ELSE `' . $isProductPriceLeftJoin . '`.PRICE END';
         }
-        $search->withColumn('MAX(' . implode(' OR ', $booleanMatchedPromoList) . ')', 'main_product_is_promo');
-        $search->withColumn('MAX(' . implode(' OR ', $booleanMatchedNewnessList) . ')', 'main_product_is_new');
-        $search->withColumn('MAX(' . implode(' OR ', $booleanMatchedPriceList) . ')', 'real_highest_price');
-        $search->withColumn('MIN(' . implode(' OR ', $booleanMatchedPriceList) . ')', 'real_lowest_price');
+        $search->withColumn('ROUND(MAX(' . implode(' OR ', $booleanMatchedPromoList) . '), 2)', 'main_product_is_promo');
+        $search->withColumn('ROUND(MAX(' . implode(' OR ', $booleanMatchedNewnessList) . '), 2)', 'main_product_is_new');
+        $search->withColumn('ROUND(MAX(' . implode(' OR ', $booleanMatchedPriceList) . '), 2)', 'real_highest_price');
+        $search->withColumn('ROUND(MIN(' . implode(' OR ', $booleanMatchedPriceList) . '), 2)', 'real_lowest_price');
 
 
         $current = $this->getCurrent();
@@ -518,7 +519,10 @@ class Product extends BaseI18nLoop
                 ->set("DESCRIPTION", $product->getVirtualColumn('i18n_DESCRIPTION'))
                 ->set("POSTSCRIPTUM", $product->getVirtualColumn('i18n_POSTSCRIPTUM'))
                 ->set("URL", $product->getUrl($locale))
-                ->set("BEST_PRICE", $product->getVirtualColumn('real_lowest_price'))
+                ->set("BEST_PRICE", $product->getRealLowestPrice())
+                ->set("BEST_TAXED_PRICE", $product->getTaxedPrice(
+                    CountryQuery::create()->findOneById(64) // @TODO : make it magic
+                ))
                 ->set("IS_PROMO", $product->getVirtualColumn('main_product_is_promo'))
                 ->set("IS_NEW", $product->getVirtualColumn('main_product_is_new'))
                 ->set("POSITION", $product->getPosition())
diff --git a/core/lib/Thelia/Exception/TaxEngineException.php b/core/lib/Thelia/Exception/TaxEngineException.php
index b51aeef44..2a2718d4b 100755
--- a/core/lib/Thelia/Exception/TaxEngineException.php
+++ b/core/lib/Thelia/Exception/TaxEngineException.php
@@ -31,6 +31,9 @@ class TaxEngineException extends \RuntimeException
 
     const UNDEFINED_PRODUCT = 501;
     const UNDEFINED_COUNTRY = 502;
+    const UNDEFINED_TAX_RULES_COLLECTION = 503;
+
+    const BAD_AMOUNT_FORMAT = 601;
 
     public function __construct($message, $code = null, $previous = null) {
         if($code === null) {
diff --git a/core/lib/Thelia/Model/Product.php b/core/lib/Thelia/Model/Product.php
index 6c7ffbe44..66e2a80ad 100755
--- a/core/lib/Thelia/Model/Product.php
+++ b/core/lib/Thelia/Model/Product.php
@@ -2,8 +2,10 @@
 
 namespace Thelia\Model;
 
+use Propel\Runtime\Exception\PropelException;
 use Thelia\Model\Base\Product as BaseProduct;
 use Thelia\Tools\URL;
+use Thelia\TaxEngine\Calculator;
 
 class Product extends BaseProduct
 {
@@ -11,4 +13,21 @@ class Product extends BaseProduct
     {
         return URL::getInstance()->retrieve('product', $this->getId(), $locale)->toString();
     }
+
+    public function getRealLowestPrice($virtualColumnName = 'real_lowest_price')
+    {
+        try {
+            $amount = $this->getVirtualColumn($virtualColumnName);
+        } catch(PropelException $e) {
+            throw new PropelException("Virtual column `$virtualColumnName` does not exist in Product::getRealLowestPrice");
+        }
+
+        return $amount;
+    }
+
+    public function getTaxedPrice(Country $country)
+    {
+        $taxCalculator = new Calculator();
+        return $taxCalculator->load($this, $country)->getTaxedPrice();
+    }
 }
diff --git a/core/lib/Thelia/Model/Tax.php b/core/lib/Thelia/Model/Tax.php
index ed61876ae..21efbae6a 100755
--- a/core/lib/Thelia/Model/Tax.php
+++ b/core/lib/Thelia/Model/Tax.php
@@ -2,8 +2,45 @@
 
 namespace Thelia\Model;
 
+use Thelia\Exception\TaxEngineException;
 use Thelia\Model\Base\Tax as BaseTax;
 
-class Tax extends BaseTax {
+class Tax extends BaseTax
+{
+    public function calculateTax($amount)
+    {
+        if(false === filter_var($amount, FILTER_VALIDATE_FLOAT)) {
+            throw new TaxEngineException('BAD AMOUNT FORMAT', TaxEngineException::BAD_AMOUNT_FORMAT);
+        }
 
+        $rate = $this->getRate();
+
+        if($rate === null) {
+            return 0;
+        }
+
+        return $amount * $rate * 0.01;
+    }
+
+    public function getTaxRuleCountryPosition()
+    {
+        try {
+             $taxRuleCountryPosition = $this->getVirtualColumn(TaxRuleQuery::ALIAS_FOR_TAX_RULE_COUNTRY_POSITION);
+        } catch(PropelException $e) {
+            throw new PropelException("Virtual column `" . TaxRuleQuery::ALIAS_FOR_TAX_RULE_COUNTRY_POSITION . "` does not exist in Tax::getTaxRuleCountryPosition");
+        }
+
+        return $taxRuleCountryPosition;
+    }
+
+    public function getTaxRuleRateSum()
+    {
+        try {
+            $taxRuleRateSum = $this->getVirtualColumn(TaxRuleQuery::ALIAS_FOR_TAX_RATE_SUM);
+        } catch(PropelException $e) {
+            throw new PropelException("Virtual column `" . TaxRuleQuery::ALIAS_FOR_TAX_RATE_SUM . "` does not exist in Tax::getTaxRuleRateSum");
+        }
+
+        return $taxRuleRateSum;
+    }
 }
diff --git a/core/lib/Thelia/Model/TaxRuleQuery.php b/core/lib/Thelia/Model/TaxRuleQuery.php
index 833048fcf..b14e0f55d 100755
--- a/core/lib/Thelia/Model/TaxRuleQuery.php
+++ b/core/lib/Thelia/Model/TaxRuleQuery.php
@@ -4,7 +4,8 @@ namespace Thelia\Model;
 
 use Propel\Runtime\ActiveQuery\Criteria;
 use Thelia\Model\Base\TaxRuleQuery as BaseTaxRuleQuery;
-
+use Thelia\Model\Map\TaxRuleCountryTableMap;
+use Thelia\Model\Map\TaxTableMap;
 
 /**
  * Skeleton subclass for performing query and update operations on the 'tax_rule' table.
@@ -18,14 +19,26 @@ use Thelia\Model\Base\TaxRuleQuery as BaseTaxRuleQuery;
  */
 class TaxRuleQuery extends BaseTaxRuleQuery
 {
-    public function getTaxCalculatorCollection(Product $product, Country $country)
-    {
-        $search = TaxRuleCountryQuery::create()
-            ->filterByCountry($country, Criteria::EQUAL)
-            ->filterByTaxRuleId($product->getTaxRuleId())
-            ->orderByPosition()
-            ->find();
+    const ALIAS_FOR_TAX_RULE_COUNTRY_POSITION = 'taxRuleCountryPosition';
+    const ALIAS_FOR_TAX_RATE_SUM = 'taxRateSum';
 
-        return $search;
+    public function getTaxCalculatorGroupedCollection(Product $product, Country $country)
+    {
+        $search = TaxQuery::create()
+            ->filterByTaxRuleCountry(
+                TaxRuleCountryQuery::create()
+                    ->filterByCountry($country, Criteria::EQUAL)
+                    ->filterByTaxRuleId($product->getTaxRuleId())
+                    ->groupByPosition()
+                    ->orderByPosition()
+                    ->find()
+            )
+            ->withColumn(TaxRuleCountryTableMap::POSITION, self::ALIAS_FOR_TAX_RULE_COUNTRY_POSITION)
+            ->withColumn('ROUND(SUM(' . TaxTableMap::RATE . '), 2)', self::ALIAS_FOR_TAX_RATE_SUM)
+        ;
+
+        //var_dump($search->toString());
+
+        return $search->find();
     }
 } // TaxRuleQuery
diff --git a/core/lib/Thelia/TaxEngine/Calculator.php b/core/lib/Thelia/TaxEngine/Calculator.php
index 2648b4d6d..b0dcbb2fa 100755
--- a/core/lib/Thelia/TaxEngine/Calculator.php
+++ b/core/lib/Thelia/TaxEngine/Calculator.php
@@ -36,7 +36,7 @@ class Calculator
 {
     protected $taxRuleQuery = null;
 
-    protected $taxRulesCollection = null;
+    protected $taxRulesGroupedCollection = null;
 
     protected $product = null;
     protected $country = null;
@@ -44,12 +44,14 @@ class Calculator
     public function __construct()
     {
         $this->taxRuleQuery = new TaxRuleQuery();
-
-        return $this;
     }
 
     public function load(Product $product, Country $country)
     {
+        $this->product = null;
+        $this->country = null;
+        $this->taxRulesGroupedCollection = null;
+
         if($product->getId() === null) {
             throw new TaxEngineException('Product id is empty in Calculator::load', TaxEngineException::UNDEFINED_PRODUCT);
         }
@@ -60,13 +62,29 @@ class Calculator
         $this->product = $product;
         $this->country = $country;
 
-        $this->taxRulesCollection = $this->taxRuleQuery->getTaxCalculatorCollection($product, $country);
+        $this->taxRulesGroupedCollection = $this->taxRuleQuery->getTaxCalculatorGroupedCollection($product, $country);
 
         return $this;
     }
 
     public function getTaxAmount()
     {
+        if(null === $this->taxRulesGroupedCollection) {
+            throw new TaxEngineException('Tax rules collection is empty in Calculator::getTaxAmount', TaxEngineException::UNDEFINED_TAX_RULES_COLLECTION);
+        }
 
+        $amount = $this->product->getRealLowestPrice();
+
+        $taxRateAmount = 0;
+        foreach($this->taxRulesGroupedCollection as $taxRule) {
+            $taxRateAmount += $taxRule->getTaxRuleRateSum();
+        }
+
+        return $amount * $taxRateAmount * 0.01;
+    }
+
+    public function getTaxedPrice()
+    {
+        return $this->product->getRealLowestPrice() + $this->getTaxAmount();
     }
 }
diff --git a/templates/default/category.html b/templates/default/category.html
index dd5c6a20a..4aae69cec 100755
--- a/templates/default/category.html
+++ b/templates/default/category.html
@@ -26,6 +26,8 @@
         <h4>#TITLE</h4>
         <p>#DESCRIPTION</p>
 
+        <p>Starting by #BEST_PRICE € HT (#BEST_TAXED_PRICE € TTC)</p>
+
         {ifloop rel="ft"}
             <h5>Features</h5>
             <ul>