This piece of codes will help you get final price with tax and formatted nicely using your store currency

<?php
$_coreHelper = $this->helper(’core’);
$_taxHelper = $this->helper(’tax’);
$_finalPriceInclTax = $_taxHelper->getPrice($_product, $_product->getFinalPrice(), true);
$_finalPriceInclTaxNicelyFormated = $_coreHelper->currency($_finalPriceInclTax,true,false);
echo $_finalPriceInclTaxNicelyFormated;

?>

Hope you find it useful ! 😀