WordPress at a glance
filter is not described

woocommerce_tax_round filter-hook . WC 1.0

Round to precision.

Filter example: to return rounding to .5 cents you'd use:

function euro_5cent_rounding( $in ) {

return round( $in / 5, 2 ) * 5;

} add_filter( 'woocommerce_tax_round', 'euro_5cent_rounding' );

Usage

add_filter( 'woocommerce_tax_round', 'filter_function_name_6859' );
function filter_function_name_6859( $in ){
	// filter...

	return $in;
}
$in
-

Where the hook is called

WC_Tax::round()
woocommerce_tax_round
woocommerce/includes/class-wc-tax.php 103
return apply_filters( 'woocommerce_tax_round', NumberUtil::round( $in, wc_get_rounding_precision() ), $in );

Where in WP core the hook is used WooCommerce

Usage not found.