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action is not described

woocommerce_order_before_calculate_taxes action-hook . WC 1.0

Calculate taxes for all line items and shipping, and store the totals and tax rows.

If by default the taxes are based on the shipping address and the current order doesn't have any, it would use the billing address rather than using the Shopping base location.

Will use the base country unless customer addresses are set.

Usage

add_action( 'woocommerce_order_before_calculate_taxes', 'action_function_name_5763', 10, 2 );
function action_function_name_5763( $args, $that ){
	// action...
}
$args(array)
Added in 3.0.0 to pass things like location.
$that
-

Where the hook is called

WC_Abstract_Order::calculate_taxes()
woocommerce_order_before_calculate_taxes
woocommerce/includes/abstracts/abstract-wc-order.php 1552
do_action( 'woocommerce_order_before_calculate_taxes', $args, $this );

Where in WP core the hook is used WooCommerce

Usage not found.