WordPress at a glance
filter is not described

woocommerce_find_rates filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_find_rates', 'filter_function_name_3969', 10, 2 );
function filter_function_name_3969( $matched_tax_rates, $args ){
	// filter...

	return $matched_tax_rates;
}
$matched_tax_rates
-
$args
-

Where the hook is called

WC_Tax::find_rates()
woocommerce_find_rates
woocommerce/includes/class-wc-tax.php 252
return apply_filters( 'woocommerce_find_rates', $matched_tax_rates, $args );

Where in WP core the hook is used WooCommerce

Usage not found.