protected function getStoreShippingTaxPercent() { $shippingTaxClass = (int) Mage::getStoreConfig(Mage_Tax_Model_Config::CONFIG_XML_PATH_SHIPPING_TAX_CLASS, $this->_magentoQuote->getStore()); $request = new Varien_Object(); $request->setProductTaxClassId($shippingTaxClass); return $this->getTaxCalculator()->getStoreRate($request); }