woocommerce_tax_rate_updated │ action-hook │ WC 1.0

Usage

add_action( 'woocommerce_tax_rate_updated', 'wp_kama_woocommerce_tax_rate_updated_action', 10, 2 );

/**
 * Function for `woocommerce_tax_rate_updated` action-hook.
 * 
 * @param  $tax_rate_id 
 * @param  $tax_rate    
 *
 * @return void
 */
function wp_kama_woocommerce_tax_rate_updated_action( $tax_rate_id, $tax_rate ){

	// action...
}

$tax_rate_id

-

$tax_rate

-

Where the hook is called

do_action( 'woocommerce_tax_rate_updated', $tax_rate_id, $tax_rate );

Where the hook is used in WooCommerce