WordPress at a glance
filter is not described

woocommerce_get_shipping_tax filter-hook . WC 1.0

Get shipping tax.

Usage

add_filter( 'woocommerce_get_shipping_tax', 'filter_function_name_6635', 10, 2 );
function filter_function_name_6635( $array_sum(), $that ){
	// filter...

	return $array_sum();
}
$array_sum()
-
$that
-

Where the hook is called

WC_Shipping_Rate::get_shipping_tax()
woocommerce_get_shipping_tax
woocommerce/includes/class-wc-shipping-rate.php 229
return apply_filters( 'woocommerce_get_shipping_tax', count( $this->taxes ) > 0 && ! WC()->customer->get_is_vat_exempt() ? array_sum( $this->taxes ) : 0, $this );

Where in WP core the hook is used WooCommerce

Usage not found.