WordPress at a glance
action is not described

woocommerce_tax_rate_added action-hook . WC 1.0

Usage

add_action( 'woocommerce_tax_rate_added', 'action_function_name_9063', 10, 2 );
function action_function_name_9063( $tax_rate_id, $tax_rate ){
	// action...
}
$tax_rate_id
-
$tax_rate
-

Where the hook is called

WC_Tax::_insert_tax_rate()
woocommerce_tax_rate_added
woocommerce/includes/class-wc-tax.php 1052
do_action( 'woocommerce_tax_rate_added', $tax_rate_id, $tax_rate );

Where in WP core the hook is used WooCommerce

Usage not found.