WordPress at a glance
filter is not described

woocommerce_cart_tax_totals filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_cart_tax_totals', 'filter_function_name_9414', 10, 2 );
function filter_function_name_9414( $tax_totals, $that ){
	// filter...

	return $tax_totals;
}
$tax_totals
-
$that
-

Where the hook is called

WC_Cart::get_tax_totals()
woocommerce_cart_tax_totals
woocommerce/includes/class-wc-cart.php 895
return apply_filters( 'woocommerce_cart_tax_totals', $tax_totals, $this );

Where in WP core the hook is used WooCommerce

Usage not found.