private function needToSubtractTax()
{
if (!$this->quoteBuilder->getProxyOrder()->isTaxModeChannel() && !$this->quoteBuilder->getProxyOrder()->isTaxModeMixed()) {
return false;
}
if (!$this->proxyItem->hasVat()) {
return false;
}
/** @var $taxCalculator Mage_Tax_Model_Calculation */
$taxCalculator = Mage::getSingleton('tax/calculation');
$store = $this->quoteBuilder->getQuote()->getStore();
$request = new Varien_Object();
$request->setProductClassId($this->product->getTaxClassId());
return $this->proxyItem->getTaxRate() != $taxCalculator->getStoreRate($request, $store);
}
