WC_Countries::ex_tax_or_vat PHP Method

    public function ex_tax_or_vat()
    {
        $return = in_array($this->get_base_country(), $this->get_european_union_countries('eu_vat')) ? __('(ex. VAT)', 'woocommerce') : __('(ex. tax)', 'woocommerce');
        return apply_filters('woocommerce_countries_ex_tax_or_vat', $return);
    }