protected function _calculateTaxForItem(Item $item)
{
// populate for taxStrategy
$item->populate($item->getUnit());
if (false === $item->order->taxable) {
// Resetting the gross is important because if the tax strategy is
// exclusive this will include the tax amount
$item->gross = $item->net;
$item->taxRate = 0;
$item->tax = 0;
return;
}
// Set the tax rate to whatever the product's tax rate is
$item->taxRate = $item->productTaxRate;
// Get the adjusted gross based on tax rate differences.
// Takes off included tax and add actual tax.
if ('exclusive' === $item->taxStrategy) {
// actual
$adjustedGross = $item->getDiscountedPrice();
} else {
// actual - included tax
$includedTax = $this->_calculateInclusiveTax($item->getDiscountedPrice(), $item->getProduct()->getTaxStrategy()->getIncludedTaxRate());
$adjustedGross = $item->getDiscountedPrice() - $includedTax;
}
// adjusted + tax
$adjustedGross += $adjustedGross * ($item->taxRate / 100);
// Gross is the product gross - discount
$item->gross = $adjustedGross;
$item->tax = $this->_calculateInclusiveTax($item->gross, $item->taxRate);
$item->net = round($item->gross - $item->tax, 2);
$item->gross = round($item->gross, 2);
$item->discount = round($item->discount, 2);
}
