WordPress at a glance
filter is not described

woocommerce_calc_shipping_tax filter-hook . WC 1.0

Calculate the shipping tax using a passed array of rates.

Usage

add_filter( 'woocommerce_calc_shipping_tax', 'filter_function_name_2766', 10, 2 );
function filter_function_name_2766( $price, $rates ){
	// filter...

	return $price;
}
$price(float)
Shipping cost.
$rates
-

Where the hook is called

WC_Tax::calc_shipping_tax()
woocommerce_calc_shipping_tax
woocommerce/includes/class-wc-tax.php 86
return apply_filters( 'woocommerce_calc_shipping_tax', $taxes, $price, $rates );

Where in WP core the hook is used WooCommerce

Usage not found.