diff --git a/admin-dev/themes/default/template/controllers/products/prices.tpl b/admin-dev/themes/default/template/controllers/products/prices.tpl
index 52abb9aa2..f2de7e04d 100644
--- a/admin-dev/themes/default/template/controllers/products/prices.tpl
+++ b/admin-dev/themes/default/template/controllers/products/prices.tpl
@@ -146,7 +146,7 @@ jQuery(document).ready(Customer.init);
 				 <select onChange="javascript:calcPrice(); unitPriceWithTax('unit');" name="id_tax_rules_group" id="id_tax_rules_group" {if $tax_exclude_taxe_option}disabled="disabled"{/if} >
 					<option value="0">{l s='No Tax'}</option>
 					{foreach from=$tax_rules_groups item=tax_rules_group}
-						<option value="{$tax_rules_group.id_tax_rules_group}" {if $product->id_tax_rules_group == $tax_rules_group.id_tax_rules_group}selected="selected"{/if} >
+						<option value="{$tax_rules_group.id_tax_rules_group}" {if $product->getIdTaxRulesGroup() == $tax_rules_group.id_tax_rules_group}selected="selected"{/if} >
 							{$tax_rules_group['name']|htmlentitiesUTF8}
 						</option>
 					{/foreach}
diff --git a/classes/Carrier.php b/classes/Carrier.php
index 8bbf73478..b56d52739 100644
--- a/classes/Carrier.php
+++ b/classes/Carrier.php
@@ -47,9 +47,6 @@ class CarrierCore extends ObjectModel
 	const SORT_BY_ASC = 0;
 	const SORT_BY_DESC = 1;
 
-	/** @var int Tax id (none = 0) */
-	public $id_tax_rules_group;
-
 	/** @var int common id for carrier historization */
 	public $id_reference;
 
@@ -121,7 +118,6 @@ class CarrierCore extends ObjectModel
 		'fields' => array(
 			/* Classic fields */
 			'id_reference' => 			array('type' => self::TYPE_INT),
-			'id_tax_rules_group' => 	array('type' => self::TYPE_INT, 'validate' => 'isInt'),
 			'name' => 					array('type' => self::TYPE_STRING, 'validate' => 'isCarrierName', 'required' => true, 'size' => 64),
 			'active' => 				array('type' => self::TYPE_BOOL, 'validate' => 'isBool', 'required' => true),
 			'is_free' => 				array('type' => self::TYPE_BOOL, 'validate' => 'isBool'),
@@ -164,6 +160,12 @@ class CarrierCore extends ObjectModel
 	public function __construct($id = null, $id_lang = null)
 	{
 		parent::__construct($id, $id_lang);
+		/**
+		 * keep retrocompatibility id_tax_rules_group
+		 * @deprecated 1.5.0
+		 */
+		if ($this->id)
+			$this->id_tax_rules_group = $this->getIdTaxRulesGroup(Context::getContext());
 		if ($this->name == '0')
 			$this->name = Configuration::get('PS_SHOP_NAME');
 	}
@@ -193,7 +195,9 @@ class CarrierCore extends ObjectModel
 	{
 		if (!parent::delete())
 			return false;
-		return Db::getInstance()->Execute('DELETE FROM '._DB_PREFIX_.'cart_rule_carrier WHERE id_carrier = '.(int)$this->id);
+		return (Db::getInstance()->Execute('DELETE FROM '._DB_PREFIX_.'cart_rule_carrier WHERE id_carrier = '.(int)$this->id) &&
+					$this->deleteTaxRulesGroup(true));
+		
 	}
 
 	/**
@@ -904,23 +908,56 @@ class CarrierCore extends ObjectModel
 		return $suffix;
 	}
 
-	/**
-	 *
-	 * @param int $id_carrier
-	 */
-	public static function getIdTaxRulesGroupByIdCarrier($id_carrier)
+	public function getIdTaxRulesGroup(Context $context = null)
 	{
-		if (!isset(self::$cache_tax_rule[(int)$id_carrier]))
-		{
-			 self::$cache_tax_rule[$id_carrier] = Db::getInstance()->getValue('
-			 SELECT `id_tax_rules_group`
-			 FROM `'._DB_PREFIX_.'carrier`
-			 WHERE `id_carrier` = '.(int)$id_carrier);
-		}
-
-		return self::$cache_tax_rule[$id_carrier];
+		return Carrier::getIdTaxRulesGroupByIdCarrier((int)$this->id, $context);
+	}
+	
+	public static function getIdTaxRulesGroupByIdCarrier($id_carrier, Context $context = null)
+	{
+		if (!$context)
+			$context = Context::getContext();
+		if (!Cache::isStored((int)$id_carrier.'_'.(int)$context->shop->getId(true)))
+			Cache::store((int)$id_carrier.'_'.(int)$context->shop->getId(true), 
+			Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue('
+				SELECT `id_tax_rules_group`
+				FROM `'._DB_PREFIX_.'carrier_tax_rules_group_shop`
+				WHERE `id_carrier` = '.(int)$id_carrier.' AND id_shop='.(int)Context::getContext()->shop->getId(true)));
+			
+		return Cache::retrieve((int)$id_carrier.'_'.(int)$context->shop->getId(true));
 	}
 
+	
+	public function deleteTaxRulesGroup($all_shops = false)
+	{
+		$shop = '';
+		if (!$all_shops)
+			$shop = ' AND `id_shop`='.(int)Context::getContext()->shop->id;
+		return Db::getInstance()->execute('DELETE FROM '._DB_PREFIX_.'carrier_tax_rules_group_shop 
+					WHERE id_carrier='.(int)$this->id.$shop);
+	}	
+		
+	public function setTaxRulesGroup($id_tax_rules_group, $all_shops = false)
+	{
+		if (!Validate::isInt($id_tax_rules_group))
+			die(Tools::displayError());
+		
+		if (Context::getContext()->shop->getContextType() != Shop::CONTEXT_SHOP)
+			$all_shops = true;
+		
+		$this->deleteTaxRulesGroup($all_shops);
+		
+		if ($all_shops)
+		{
+			$values = '';
+			$shops = Shop::getShops(false, null, true);
+			foreach ($shops as $id_shop)
+				$values .= '('.(int)$this->id.','.(int)$id_tax_rules_group.','.(int)$id_shop.'),';
+		}
+		else
+			$values = '('.(int)$this->id.','.(int)$id_tax_rules_group.','.(int)Context::getContext()->shop->id.')';
+		return Db::getInstance()->execute('INSERT INTO '._DB_PREFIX_.'carrier_tax_rules_group_shop (`id_carrier`, `id_tax_rules_group`, `id_shop`) VALUES '.rtrim($values, ','));
+	}
 
 	/**
 	 * Returns the taxes rate associated to the carrier
@@ -931,7 +968,7 @@ class CarrierCore extends ObjectModel
 	 */
 	public function getTaxesRate(Address $address)
 	{
-		$tax_manager = TaxManagerFactory::getManager($address, $this->id_tax_rules_group);
+		$tax_manager = TaxManagerFactory::getManager($address, $this->getIdTaxRulesGroup());
 		$tax_calculator = $tax_manager->getTaxCalculator();
 		return $tax_calculator->getTotalRate();
 	}
diff --git a/classes/Cart.php b/classes/Cart.php
index 9deb41bf8..88dc3d317 100644
--- a/classes/Cart.php
+++ b/classes/Cart.php
@@ -392,8 +392,11 @@ class CartCore extends ObjectModel
 			p.`id_product` = pl.`id_product`
 			AND pl.`id_lang` = '.(int)$this->id_lang.Context::getContext()->shop->addSqlRestrictionOnLang('pl')
 		);
+		$sql->leftJoin('product_tax_rules_group_shop', 'ptrgs', 
+			'p.`id_product` = ptrgs.`id_product` AND cp.`id_shop` = ptrgs.`id_shop`');
+		
 		$sql->leftJoin('tax_rule', 'tr', '
-			p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+			ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 			AND tr.`id_country` = '.(int)$id_country.'
 			AND tr.`id_state` = 0
 			AND tr.`zipcode_from` = 0'
diff --git a/classes/Category.php b/classes/Category.php
index 363d98acc..9d998760e 100644
--- a/classes/Category.php
+++ b/classes/Category.php
@@ -649,6 +649,8 @@ class CategoryCore extends ObjectModel
 				LEFT JOIN `'._DB_PREFIX_.'image_lang` il
 					ON (i.`id_image` = il.`id_image`
 					AND il.`id_lang` = '.(int)$id_lang.')
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)$context->shop->id.')
 				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr
 					ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
 					AND tr.`id_country` = '.(int)$context->country->id.'
diff --git a/classes/Manufacturer.php b/classes/Manufacturer.php
index a871fa44e..6aee758a3 100644
--- a/classes/Manufacturer.php
+++ b/classes/Manufacturer.php
@@ -336,6 +336,8 @@ class ManufacturerCore extends ObjectModel
 					ON (i.`id_product` = p.`id_product` AND i.`cover` = 1)
 				LEFT JOIN `'._DB_PREFIX_.'image_lang` il
 					ON (i.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)$context->shop->id.')
 				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr
 					ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
 						AND tr.`id_country` = '.(int)$context->country->id.'
@@ -452,4 +454,4 @@ class ManufacturerCore extends ObjectModel
 
 		return ($result1 && $result2);
 	}
-}
\ No newline at end of file
+}
diff --git a/classes/Pack.php b/classes/Pack.php
index 05b1415c1..445465a98 100644
--- a/classes/Pack.php
+++ b/classes/Pack.php
@@ -120,7 +120,9 @@ class PackCore extends Product
 				LEFT JOIN `'._DB_PREFIX_.'category_lang` cl
 					ON p.`id_category_default` = cl.`id_category`
 					AND cl.`id_lang` = '.(int)$id_lang.Context::getContext()->shop->addSqlRestrictionOnLang('cl').'
-				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)Context::getContext()->shop->id.')
+				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 					AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 					AND tr.`id_state` = 0)
 			    LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
@@ -156,7 +158,9 @@ class PackCore extends Product
 		NATURAL LEFT JOIN `'._DB_PREFIX_.'product_lang` pl
 		LEFT JOIN `'._DB_PREFIX_.'image` i ON (i.`id_product` = p.`id_product` AND i.`cover` = 1)
 		LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
-		LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+		LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+			AND ptrgs.id_shop='.(int)Context::getContext()->shop->id.')
+		LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 		                                           AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 	                                           	   AND tr.`id_state` = 0)
 	    LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
diff --git a/classes/Product.php b/classes/Product.php
index aeaf3a5cc..8af0445b9 100644
--- a/classes/Product.php
+++ b/classes/Product.php
@@ -42,9 +42,6 @@ class ProductCore extends ObjectModel
 	/** @var string Tax rate */
 	public $tax_rate;
 
-	/** @var string Tax rules group */
-	public $id_tax_rules_group;
-
 	/** @var integer Manufacturer id */
 	public $id_manufacturer;
 
@@ -232,7 +229,6 @@ class ProductCore extends ObjectModel
 		'multishop' => true,
 		'fields' => array(
 			// Classic fields
-			'id_tax_rules_group' => 		array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
 			'id_manufacturer' => 			array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
 			'id_supplier' => 				array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
 			'id_category_default' => 		array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
@@ -388,16 +384,22 @@ class ProductCore extends ObjectModel
 	{
 		parent::__construct($id_product, $id_lang, $id_shop);
 		if (!$context)
+
 			$context = Context::getContext();
 
+	/**
+	 * keep retrocompatibility id_tax_rules_group
+	 * @deprecated 1.5.0.6
+	 */
+		if ($this->id)
+			$this->id_tax_rules_group = $this->getIdTaxRulesGroup($context);
+			
 		if ($full && $this->id)
 		{
 			$this->isFullyLoaded = $full;
 			$this->tax_name = 'deprecated'; // The applicable tax may be BOTH the product one AND the state one (moreover this variable is some deadcode)
 			$this->manufacturer_name = Manufacturer::getNameById((int)$this->id_manufacturer);
 			$this->supplier_name = Supplier::getNameById((int)$this->id_supplier);
-			self::$_tax_rules_group[$this->id] = $this->id_tax_rules_group;
-
 			$address = null;
 			if (is_object($context->cart) && $context->cart->{Configuration::get('PS_TAX_ADDRESS_TYPE')} != null)
 				$address = $context->cart->{Configuration::get('PS_TAX_ADDRESS_TYPE')};
@@ -659,7 +661,8 @@ class ProductCore extends ObjectModel
 			!$this->deleteSearchIndexes() ||
 			!$this->deleteAccessories() ||
 			!$this->deleteFromAccessories() ||
-			!$this->deleteFromSupplier())
+			!$this->deleteFromSupplier() ||
+			!$this->deleteTaxRulesGroup(true))
 		return false;
 
 		if ($id = ProductDownload::getIdFromIdProduct($this->id))
@@ -926,7 +929,9 @@ class ProductCore extends ObjectModel
 				FROM `'._DB_PREFIX_.'product` p
 				'.$context->shop->addSqlAssociation('product', 'p').'
 				LEFT JOIN `'._DB_PREFIX_.'product_lang` pl ON (p.`id_product` = pl.`id_product` '.$context->shop->addSqlRestrictionOnLang('pl').')
-				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)$context->shop->id.')
+				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 		 		  AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 		 		  AND tr.`id_state` = 0)
 	  		 	LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
@@ -1819,8 +1824,10 @@ class ProductCore extends ObjectModel
 		);
 		$sql->leftJoin('image', 'i', 'i.`id_product` = p.`id_product` AND i.`cover` = 1');
 		$sql->leftJoin('image_lang', 'il', 'i.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang);
+		$sql->leftJoin('product_tax_rules_group_shop', 'ptrgs', 
+			'p.`id_product` = ptrgs.`id_product` AND ptrgs.`id_shop` ='.(int)$context->shop->id);
 		$sql->leftJoin('tax_rule', 'tr', '
-			p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+			ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 			AND tr.`id_country` = '.(int)$context->country->id.'
 			AND tr.`id_state` = 0'
 		);
@@ -1935,7 +1942,9 @@ class ProductCore extends ObjectModel
 				)
 				LEFT JOIN `'._DB_PREFIX_.'image` i ON (i.`id_product` = p.`id_product` AND i.`cover` = 1)
 				LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
-				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)$context->shop->id.')
+				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 					AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 					AND tr.`id_state` = 0)
 				LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
@@ -2019,7 +2028,9 @@ class ProductCore extends ObjectModel
 				)
 				LEFT JOIN `'._DB_PREFIX_.'image` i ON (i.`id_product` = p.`id_product` AND i.`cover` = 1)
 				LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
-				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)$context->shop->id.')
+				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 					AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 					AND tr.`id_state` = 0)
 				LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
@@ -2919,7 +2930,9 @@ class ProductCore extends ObjectModel
 				LEFT JOIN `'._DB_PREFIX_.'image` i ON (i.`id_product` = p.`id_product` AND i.`cover` = 1)
 				LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
 				LEFT JOIN `'._DB_PREFIX_.'manufacturer` m ON (p.`id_manufacturer`= m.`id_manufacturer`)
-				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)$context->shop->id.')
+				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 					AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 					AND tr.`id_state` = 0)
 				LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
@@ -4021,18 +4034,61 @@ class ProductCore extends ObjectModel
 			AND l.`active` = 1
 		');
 	}
-
-	public static function getIdTaxRulesGroupByIdProduct($id_product)
+	
+	public static function duplicateTaxRulesGroup($id_old_product, $id_new_product)
 	{
-		if (!isset(self::$_tax_rules_group[$id_product]))
+		return Db::getInstance()->execute('INSERT INTO '._DB_PREFIX_.'product_tax_rules_group_shop (`id_product`, `id_tax_rules_group`, `id_shop`)
+														(SELECT '.(int)$id_new_product.', `id_tax_rules_group`, `id_shop` 
+															FROM '._DB_PREFIX_.'product_tax_rules_group_shop WHERE `id_product`='.(int)$id_old_product.')');
+	}
+	
+	public function deleteTaxRulesGroup($all_shops = false)
+	{
+		$shop = '';
+		if (!$all_shops)
+			$shop = ' AND `id_shop`='.(int)Context::getContext()->shop->id;
+		return Db::getInstance()->execute('DELETE FROM '._DB_PREFIX_.'product_tax_rules_group_shop 
+					WHERE id_product='.(int)$this->id.$shop);
+	}	
+		
+	public function setTaxRulesGroup($id_tax_rules_group, $all_shops = false)
+	{
+		if (!Validate::isInt($id_tax_rules_group))
+			die(Tools::displayError());
+		$this->deleteTaxRulesGroup($all_shops);
+
+		if (Context::getContext()->shop->getContextType() != Shop::CONTEXT_SHOP)
+			$all_shops = true;
+			
+		if ($all_shops)
 		{
-			$id_group = Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue('
-			SELECT `id_tax_rules_group`
-			FROM `'._DB_PREFIX_.'product`
-			WHERE `id_product` = '.(int)$id_product);
-			self::$_tax_rules_group[$id_product] = $id_group;
+			$values = '';
+			$shops = Shop::getShops(false, null, true);
+			foreach ($shops as $id_shop)
+				$values .= '('.(int)$this->id.','.(int)$id_tax_rules_group.','.(int)$id_shop.'),';
 		}
-		return self::$_tax_rules_group[$id_product];
+		else
+			$values = '('.(int)$this->id.','.(int)$id_tax_rules_group.','.(int)Context::getContext()->shop->id.')';
+		return Db::getInstance()->execute('INSERT INTO '._DB_PREFIX_.'product_tax_rules_group_shop (`id_product`, `id_tax_rules_group`, `id_shop`) VALUES '.rtrim($values, ','));
+	}
+	
+	public function getIdTaxRulesGroup(Context $context = null)
+	{
+		return Product::getIdTaxRulesGroupByIdProduct((int)$this->id, $context);
+	}
+	
+	public static function getIdTaxRulesGroupByIdProduct($id_product, Context $context = null)
+	{
+		if (!$context)
+			$context = Context::getContext();
+		if (!Cache::isStored((int)$id_product.'_'.(int)$context->shop->id))
+			Cache::store((int)$id_product.'_'.(int)$context->shop->id, 
+			Db::getInstance(_PS_USE_SQL_SLAVE_)->getValue('
+				SELECT `id_tax_rules_group`
+				FROM `'._DB_PREFIX_.'product_tax_rules_group_shop`
+				WHERE `id_product` = '.(int)$id_product.' AND id_shop='.(int)Context::getContext()->shop->id));
+			
+		return Cache::retrieve((int)$id_product.'_'.(int)$context->shop->id);
 	}
 
 	/**
@@ -4043,7 +4099,7 @@ class ProductCore extends ObjectModel
 		if (!$address || !$address->id_country)
 			$address = Address::initialize();
 
-		$tax_manager = TaxManagerFactory::getManager($address, $this->id_tax_rules_group);
+		$tax_manager = TaxManagerFactory::getManager($address, Product::getIdTaxRulesGroupByIdProduct((int)$this->id));
 		$tax_calculator = $tax_manager->getTaxCalculator();
 
 		return $tax_calculator->getTotalRate();
diff --git a/classes/ProductSale.php b/classes/ProductSale.php
index 65810219a..ace4b9d67 100644
--- a/classes/ProductSale.php
+++ b/classes/ProductSale.php
@@ -96,7 +96,9 @@ class ProductSaleCore
 				LEFT JOIN `'._DB_PREFIX_.'image` i ON (i.`id_product` = p.`id_product` AND i.`cover` = 1)
 				LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image` AND il.`id_lang` = '.(int)$id_lang.')
 				LEFT JOIN `'._DB_PREFIX_.'manufacturer` m ON (m.`id_manufacturer` = p.`id_manufacturer`)
-				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)Context::getContext()->shop->id.')
+				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`)
 					AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 					AND tr.`id_state` = 0
 				LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)
diff --git a/classes/Supplier.php b/classes/Supplier.php
index 0c7f04516..ce94fe529 100644
--- a/classes/Supplier.php
+++ b/classes/Supplier.php
@@ -257,7 +257,9 @@ class SupplierCore extends ObjectModel
 					AND i.`cover` = 1)
 				LEFT JOIN `'._DB_PREFIX_.'image_lang` il ON (i.`id_image` = il.`id_image`
 					AND il.`id_lang` = '.(int)$id_lang.')
-				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
+				LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (p.`id_product` = ptrgs.`id_product` 
+					AND ptrgs.id_shop='.(int)Context::getContext()->shop->id.')
+				LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 					AND tr.`id_country` = '.(int)Context::getContext()->country->id.'
 					AND tr.`id_state` = 0
 					AND tr.`zipcode_from` = 0)
diff --git a/classes/controller/AdminController.php b/classes/controller/AdminController.php
index 47db6657a..c44755a12 100644
--- a/classes/controller/AdminController.php
+++ b/classes/controller/AdminController.php
@@ -2317,7 +2317,7 @@ class AdminControllerCore extends Controller
 			$check_box = Tools::getValue('checkBox'.Tools::toCamelCase($type, true).'Asso_'.$table);
 			foreach ($check_box as $id_asso_object => $row)
 			{
-				if (!(int)$id_asso_object)
+				if ($id_object)
 					$id_asso_object = $id_object;
 				foreach ($row as $id_shop => $value)
 					$assos[] = array('id_object' => (int)$id_asso_object, 'id_'.$type => (int)$id_shop);
diff --git a/controllers/admin/AdminCarriersController.php b/controllers/admin/AdminCarriersController.php
index d3457e9f2..45116feef 100644
--- a/controllers/admin/AdminCarriersController.php
+++ b/controllers/admin/AdminCarriersController.php
@@ -175,7 +175,9 @@ class AdminCarriersControllerCore extends AdminController
 			</ul>'
 		);
 		$this->_select = 'b.*';
-		$this->_join = 'LEFT JOIN `'._DB_PREFIX_.'carrier_lang` b ON a.id_carrier = b.id_carrier';
+		$this->_join = 'LEFT JOIN `'._DB_PREFIX_.'carrier_lang` b ON a.id_carrier = b.id_carrier
+							LEFT JOIN `'._DB_PREFIX_.'carrier_tax_rules_group_shop` ctrgs ON (a.`id_carrier` = ctrgs.`id_carrier` 
+								AND ctrgs.id_shop='.(int)$this->context->shop->id.')';
 		$this->_where = 'AND b.id_lang = '.$this->context->language->id;
 
 		return parent::renderList();
@@ -440,7 +442,6 @@ class AdminCarriersControllerCore extends AdminController
 			return;
 
 		$this->getFieldsValues($obj);
-
 		return parent::renderForm();
 	}
 
@@ -484,6 +485,7 @@ class AdminCarriersControllerCore extends AdminController
 
 							$this->postImage($new_carrier->id);
 							$this->changeZones($new_carrier->id);
+							$new_carrier->setTaxRulesGroup((int)Tools::getValue('id_tax_rules_group'), true);
 							Tools::redirectAdmin(self::$currentIndex.'&id_'.$this->table.'='.$current_carrier->id.'&conf=4&token='.$this->token);
 						}
 						else
@@ -506,6 +508,7 @@ class AdminCarriersControllerCore extends AdminController
 						{
 							if (($_POST['id_'.$this->table] = $carrier->id /* voluntary */) && $this->postImage($carrier->id) && $this->_redirect)
 							{
+								$carrier->setTaxRulesGroup((int)Tools::getValue('id_tax_rules_group'), true);
 								$this->changeZones($carrier->id);
 								$this->changeGroups($carrier->id);
 								$this->updateAssoShop($carrier->id);
@@ -565,7 +568,6 @@ class AdminCarriersControllerCore extends AdminController
 
 		if ($this->getFieldValue($obj, 'need_range'))
 			$this->fields_value['need_range'] = 1;
-
 		// Added values of object Zone
 		$carrier_zones = $obj->getZones();
 		$carrier_zones_ids = array();
@@ -588,6 +590,8 @@ class AdminCarriersControllerCore extends AdminController
 
 		foreach ($groups as $group)
 			$this->fields_value['groupBox_'.$group['id_group']] = Tools::getValue('groupBox_'.$group['id_group'], (in_array($group['id_group'], $carrier_groups_ids) || empty($carrier_groups_ids) && !$obj->id));
+		
+		$this->fields_value['id_tax_rules_group'] = $this->object->getIdTaxRulesGroup($this->context);
 	}
 
 	protected function beforeDelete($object)
@@ -636,7 +640,6 @@ class AdminCarriersControllerCore extends AdminController
 			if ($list['name'] == '0')
 				$this->_list[$key]['name'] = Configuration::get('PS_SHOP_NAME');
 	}
-
 }
 
 
diff --git a/controllers/admin/AdminProductsController.php b/controllers/admin/AdminProductsController.php
index fc352b54a..0cdbf2ad6 100644
--- a/controllers/admin/AdminProductsController.php
+++ b/controllers/admin/AdminProductsController.php
@@ -190,7 +190,9 @@ class AdminProductsControllerCore extends AdminController
 			LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (a.`id_category_default` = cl.`id_category` AND b.`id_lang` = cl.`id_lang`)
 			LEFT JOIN `'._DB_PREFIX_.'image` i ON (i.`id_product` = a.`id_product` AND i.`cover` = 1)
 			LEFT JOIN `'._DB_PREFIX_.'category_product` cp ON (cp.`id_product` = a.`id_product`)
-			LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (a.`id_tax_rules_group` = tr.`id_tax_rules_group`
+			LEFT JOIN `'._DB_PREFIX_.'product_tax_rules_group_shop` ptrgs ON (a.`id_product` = ptrgs.`id_product` 
+				AND ptrgs.id_shop='.(int)$this->context->shop->id.')
+			LEFT JOIN `'._DB_PREFIX_.'tax_rule` tr ON (ptrgs.`id_tax_rules_group` = tr.`id_tax_rules_group`
 				AND tr.`id_country` = '.(int)$this->context->country->id.' AND tr.`id_state` = 0)
 			LEFT JOIN `'._DB_PREFIX_.'tax` t ON (t.`id_tax` = tr.`id_tax`)';
 
@@ -427,6 +429,7 @@ class AdminProductsControllerCore extends AdminController
 			&& Product::duplicateCustomizationFields($id_product_old, $product->id)
 			&& Product::duplicateTags($id_product_old, $product->id)
 			&& Product::duplicateDownload($id_product_old, $product->id)
+			&& Product::duplicateTaxRulesGroup((int)$id_product_old, (int)$product->id)
 			&& $product->duplicateShops($id_product_old))
 			{
 				if ($product->hasAttributes())
@@ -1412,6 +1415,7 @@ class AdminProductsControllerCore extends AdminController
 			if (!$this->updatePackItems($this->object))
 				$this->errors[] = Tools::displayError('An error occurred while adding products to the pack.');
 			$this->updateDownloadProduct($this->object);
+			$this->object->setTaxRulesGroup((int)Tools::getValue('id_tax_rules_group'), true);
 
 			if (!count($this->errors))
 			{
@@ -1506,7 +1510,7 @@ class AdminProductsControllerCore extends AdminController
 					$this->processProductAttribute($token);
 					$this->processPriceAddition($token);
 					$this->processSpecificPricePriorities($token);
-
+					$this->object->setTaxRulesGroup((int)Tools::getValue('id_tax_rules_group'));
 					if (!$this->updatePackItems($object))
 						$this->errors[] = Tools::displayError('An error occurred while adding products to the pack.');
 					elseif (!$object->updateCategories(Tools::getValue('categoryBox'), true))
diff --git a/install-dev/data/db_structure.sql b/install-dev/data/db_structure.sql
index 428770763..069b25cee 100644
--- a/install-dev/data/db_structure.sql
+++ b/install-dev/data/db_structure.sql
@@ -1335,7 +1335,6 @@ CREATE TABLE `PREFIX_product` (
   `id_product` int(10) unsigned NOT NULL auto_increment,
   `id_supplier` int(10) unsigned default NULL,
   `id_manufacturer` int(10) unsigned default NULL,
-  `id_tax_rules_group` int(10) unsigned NOT NULL,
   `id_category_default` int(10) unsigned default NULL,
   `on_sale` tinyint(1) unsigned NOT NULL default '0',
   `online_only` tinyint(1) unsigned NOT NULL default '0',
@@ -2402,3 +2401,19 @@ CREATE TABLE `PREFIX_module_preference` (
   PRIMARY KEY (`id_module_preference`),
   UNIQUE KEY `employee_module` (`id_employee`, `module`)
 ) ENGINE=ENGINE_TYPE  DEFAULT CHARSET=utf8;
+
+CREATE TABLE `PREFIX_product_tax_rules_group_shop` (
+	`id_product` INT(11) UNSIGNED NOT NULL,
+	`id_tax_rules_group` INT(11) UNSIGNED NOT NULL,
+	`id_shop` INT( 11 ) UNSIGNED NOT NULL,
+	PRIMARY KEY ( `id_product` , `id_tax_rules_group` , `id_shop` )
+) ENGINE=ENGINE_TYPE  DEFAULT CHARSET=utf8;
+
+ CREATE TABLE `PREFIX_carrier_tax_rules_group_shop` (
+	`id_carrier` int( 11 ) unsigned NOT NULL,
+	`id_tax_rules_group` int(11) unsigned NOT NULL,
+	`id_shop` int(11) unsigned NOT NULL,
+	PRIMARY KEY (`id_carrier`, `id_tax_rules_group`, `id_shop`)
+) ENGINE=ENGINE_TYPE  DEFAULT CHARSET=utf8;
+
+
diff --git a/install-dev/data/xml/carrier_tax_rules_group_shop.xml b/install-dev/data/xml/carrier_tax_rules_group_shop.xml
new file mode 100755
index 000000000..f8172236e
--- /dev/null
+++ b/install-dev/data/xml/carrier_tax_rules_group_shop.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<entity_carrier_tax_rules_group_shop>
+  <fields primary="id_carrier,id_tax_rules_group,id_shop">
+    <field name="id_carrier" relation="carrier"/>
+    <field name="id_tax_rules_group" relation="tax_rules_group"/>
+    <field name="id_shop" relation="shop"/>
+  </fields>
+  <entities>
+    <carrier_tax_rules_group_shop id="carrier_tax_rules_group_shop_1_1_1" id_carrier="carrier_1" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+    <carrier_tax_rules_group_shop id="carrier_tax_rules_group_shop_2_1_1" id_carrier="carrier_2" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+  </entities>
+</entity_carrier_tax_rules_group_shop>
diff --git a/install-dev/data/xml/product_tax_rules_group_shop.xml b/install-dev/data/xml/product_tax_rules_group_shop.xml
new file mode 100755
index 000000000..2b07d5a87
--- /dev/null
+++ b/install-dev/data/xml/product_tax_rules_group_shop.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<entity_product_tax_rules_group_shop>
+  <fields primary="id_product,id_tax_rules_group,id_shop">
+    <field name="id_product" relation="product"/>
+    <field name="id_tax_rules_group" relation="tax_rules_group"/>
+    <field name="id_shop" relation="shop"/>
+  </fields>
+  <entities>
+    <product_tax_rules_group_shop id="product_tax_rules_group_shop_1_1_1" id_product="product_1" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+    <product_tax_rules_group_shop id="product_tax_rules_group_shop_2_1_1" id_product="product_2" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+    <product_tax_rules_group_shop id="product_tax_rules_group_shop_3_1_1" id_product="product_3" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+    <product_tax_rules_group_shop id="product_tax_rules_group_shop_4_1_1" id_product="product_4" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+    <product_tax_rules_group_shop id="product_tax_rules_group_shop_5_1_1" id_product="product_5" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+    <product_tax_rules_group_shop id="product_tax_rules_group_shop_6_1_1" id_product="product_6" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+    <product_tax_rules_group_shop id="product_tax_rules_group_shop_7_1_1" id_product="product_7" id_tax_rules_group="tax_rules_group_1" id_shop="shop_1"/>
+  </entities>
+</entity_product_tax_rules_group_shop>
diff --git a/install-dev/fixtures/apple/data/carrier.xml b/install-dev/fixtures/apple/data/carrier.xml
index 52b6b3b6f..d415175a8 100644
--- a/install-dev/fixtures/apple/data/carrier.xml
+++ b/install-dev/fixtures/apple/data/carrier.xml
@@ -2,7 +2,6 @@
 <entity_carrier>
   <fields id="name" class="Carrier" sql="a.id_carrier &gt; 1">
     <field name="id_reference"/>
-    <field name="id_tax_rules_group"/>
     <field name="name"/>
     <field name="url"/>
     <field name="active"/>
@@ -19,7 +18,7 @@
     <field name="grade"/>
   </fields>
   <entities>
-    <carrier id="My_carrier" id_reference="2" id_tax_rules_group="1" active="1" shipping_handling="1" range_behavior="0" is_free="0" shipping_external="0" need_range="0" shipping_method="0" max_width="0" max_height="0" max_depth="0" max_weight="0" grade="0">
+    <carrier id="carrier_2" id_reference="2" active="1" shipping_handling="1" range_behavior="0" is_free="0" shipping_external="0" need_range="0" shipping_method="0" max_width="0" max_height="0" max_depth="0" max_weight="0" grade="0">
       <name>My carrier</name>
       <url/>
     </carrier>
diff --git a/install-dev/fixtures/apple/data/product.xml b/install-dev/fixtures/apple/data/product.xml
index 34537f6cf..306d0da2a 100644
--- a/install-dev/fixtures/apple/data/product.xml
+++ b/install-dev/fixtures/apple/data/product.xml
@@ -3,7 +3,6 @@
   <fields id="name" class="Product">
     <field name="id_supplier" relation="supplier"/>
     <field name="id_manufacturer" relation="manufacturer"/>
-    <field name="id_tax_rules_group"/>
     <field name="id_category_default" relation="category"/>
     <field name="on_sale"/>
     <field name="online_only"/>
@@ -42,31 +41,31 @@
     <field name="advanced_stock_management"/>
   </fields>
   <entities>
-    <product id="iPod_Nano" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_tax_rules_group="1" id_category_default="iPods" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="124.581940" wholesale_price="70.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0.5" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="" advanced_stock_management="0">
+    <product id="product_1" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_category_default="iPods" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="124.581940" wholesale_price="70.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0.5" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="0" advanced_stock_management="0">
       <unity/>
       <location/>
     </product>
-    <product id="iPod_shuffle" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_tax_rules_group="1" id_category_default="iPods" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="66.053500" wholesale_price="33.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="" advanced_stock_management="0">
+    <product id="product_2" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_category_default="iPods" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="66.053500" wholesale_price="33.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="0" advanced_stock_management="0">
       <unity/>
       <location/>
     </product>
-    <product id="MacBook_Air" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_tax_rules_group="1" id_category_default="Laptops" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="1504.180602" wholesale_price="1000.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="1.36" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="" advanced_stock_management="0">
+    <product id="product_3" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_category_default="Laptops" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="1504.180602" wholesale_price="1000.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="1.36" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="0" advanced_stock_management="0">
       <unity/>
       <location/>
     </product>
-    <product id="MacBook" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_tax_rules_group="1" id_category_default="Laptops" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="1170.568561" wholesale_price="0.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0.75" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="" advanced_stock_management="0">
+    <product id="product_4" id_supplier="AppleStore" id_manufacturer="Apple_Computer_Inc" id_category_default="Laptops" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="1170.568561" wholesale_price="0.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0.75" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="0" advanced_stock_management="0">
       <unity/>
       <location/>
     </product>
-    <product id="iPod_touch" id_supplier="" id_manufacturer="" id_tax_rules_group="1" id_category_default="iPods" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="241.638796" wholesale_price="200.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="" advanced_stock_management="0">
+    <product id="product_5" id_supplier="" id_manufacturer="" id_category_default="iPods" on_sale="0" online_only="0" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="241.638796" wholesale_price="200.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="0" advanced_stock_management="0">
       <unity/>
       <location/>
     </product>
-    <product id="Belkin_Leather_Folio_for_iPod_nano_-_Black_Chocolate" id_supplier="" id_manufacturer="" id_tax_rules_group="1" id_category_default="Accessories" on_sale="0" online_only="1" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="25.041806" wholesale_price="0.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="" advanced_stock_management="0">
+    <product id="product_6" id_supplier="" id_manufacturer="" id_category_default="Accessories" on_sale="0" online_only="1" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="25.041806" wholesale_price="0.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="0" advanced_stock_management="0">
       <unity/>
       <location/>
     </product>
-    <product id="Shure_SE210_Sound-Isolating_Earphones_for_iPod_and_iPhone" id_supplier="Shure_Online_Store" id_manufacturer="Shure_Incorporated" id_tax_rules_group="1" id_category_default="Accessories" on_sale="0" online_only="1" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="124.581940" wholesale_price="0.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="" advanced_stock_management="0">
+    <product id="product_7" id_supplier="Shure_Online_Store" id_manufacturer="Shure_Incorporated" id_category_default="Accessories" on_sale="0" online_only="1" ean13="0" upc="" ecotax="0.000000" quantity="0" minimal_quantity="1" price="124.581940" wholesale_price="0.000000" unit_price_ratio="0.000000" additional_shipping_cost="0.00" reference="" supplier_reference="" width="0" height="0" depth="0" weight="0" out_of_stock="2" quantity_discount="0" customizable="0" uploadable_files="0" text_fields="0" active="1" available_for_order="1" available_date="0000-00-00" condition="new" show_price="1" indexed="1" cache_is_pack="0" cache_has_attachments="0" is_virtual="0" cache_default_attribute="0" advanced_stock_management="0">
       <unity/>
       <location/>
     </product>
diff --git a/install-dev/upgrade/sql/1.5.0.7.sql b/install-dev/upgrade/sql/1.5.0.7.sql
index e9897b9ea..819835943 100644
--- a/install-dev/upgrade/sql/1.5.0.7.sql
+++ b/install-dev/upgrade/sql/1.5.0.7.sql
@@ -7,3 +7,27 @@ ALTER TABLE `PREFIX_cart_rule` ADD `gift_product_attribute` int(10) unsigned NOT
 UPDATE `PREFIX_product` set is_virtual = 1 WHERE id_product IN (SELECT id_product FROM `PREFIX_product_download` WHERE active = 1);
 
 ALTER TABLE `PREFIX_employee` ADD `bo_width` int(10) unsigned NOT NULL DEFAULT 0 AFTER `bo_theme`;
+
+
+
+CREATE TABLE `PREFIX_product_tax_rules_group_shop` (
+	`id_product` INT(11) UNSIGNED NOT NULL,
+	`id_tax_rules_group` INT(11) UNSIGNED NOT NULL,
+	`id_shop` INT( 11 ) UNSIGNED NOT NULL,
+	PRIMARY KEY ( `id_product`, `id_tax_rules_group`, `id_shop` )
+) ENGINE=ENGINE_TYPE  DEFAULT CHARSET=utf8;
+
+INSERT INTO `PREFIX_product_tax_rules_group_shop` (`id_product`, `id_tax_rules_group`, `id_shop`)
+	(SELECT `id_product`, `id_tax_rules_group`, `id_shop` FROM `PREFIX_product`, `PREFIX_shop`);
+ALTER TABLE `PREFIX_product` DROP `id_tax_rules_group`;
+
+CREATE TABLE `PREFIX_carrier_tax_rules_group_shop` (
+	`id_carrier` int( 11 ) unsigned NOT NULL,
+	`id_tax_rules_group` int(11) unsigned NOT NULL,
+	`id_shop` int(11) unsigned NOT NULL,
+	PRIMARY KEY (`id_carrier`, `id_tax_rules_group`, `id_shop`)
+) ENGINE=ENGINE_TYPE  DEFAULT CHARSET=utf8;
+
+INSERT INTO `PREFIX_carrier_tax_rules_group_shop` (`id_carrier`, `id_tax_rules_group`, `id_shop`)
+	(SELECT `id_carrier`, `id_tax_rules_group`, `id_shop` FROM `PREFIX_carrier`, `PREFIX_shop`);
+ALTER TABLE `PREFIX_carrier` DROP `id_tax_rules_group`;
diff --git a/modules/blockmyaccount/blockmyaccount.php b/modules/blockmyaccount/blockmyaccount.php
index 5949aeb35..e208caed2 100644
--- a/modules/blockmyaccount/blockmyaccount.php
+++ b/modules/blockmyaccount/blockmyaccount.php
@@ -84,7 +84,7 @@ class BlockMyAccount extends Module
 
 	private function addMyAccountBlockHook()
 	{
-		return Db::getInstance()->execute('INSERT INTO `'._DB_PREFIX_.'hook` (`name`, `title`, `description`, `position`) VALUES (\'myAccountBlock\', \'My account block\', \'Display extra informations inside the "my account" block\', 1)');
+		return Db::getInstance()->execute('INSERT IGNORE INTO `'._DB_PREFIX_.'hook` (`name`, `title`, `description`, `position`) VALUES (\'myAccountBlock\', \'My account block\', \'Display extra informations inside the "my account" block\', 1)');
 	}
 
 	private function removeMyAccountBlockHook()
diff --git a/modules/blockmyaccountfooter/blockmyaccountfooter.php b/modules/blockmyaccountfooter/blockmyaccountfooter.php
index 1169b5257..e32de4601 100644
--- a/modules/blockmyaccountfooter/blockmyaccountfooter.php
+++ b/modules/blockmyaccountfooter/blockmyaccountfooter.php
@@ -77,7 +77,7 @@ class Blockmyaccountfooter extends Module
 
 	private function addMyAccountBlockHook()
 	{
-		return Db::getInstance()->Execute('INSERT INTO `'._DB_PREFIX_.'hook` (`name`, `title`, `description`, `position`) VALUES (\'myAccountBlockfooter\', \'My account block\', \'Display extra informations inside the "my account" block\', 1)');
+		return Db::getInstance()->Execute('INSERT IGNORE INTO `'._DB_PREFIX_.'hook` (`name`, `title`, `description`, `position`) VALUES (\'myAccountBlockfooter\', \'My account block\', \'Display extra informations inside the "my account" block\', 1)');
 	}
 
 	private function removeMyAccountBlockHook()