WooCommerce Update Checkout Totals On Billing State/County Change

Pre-Requisites

There are no pre-requisites in order for you to be able to implement this solution.

How To Implement This Solution?

Simply copy the pre-coded solution to your active theme’s functions.php or preferably the Code Snippets Plugin.

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About This Solution

Are you writing a custom snippet which makes changes to the order totals based on the billing county / state?

Perhaps your snippet adds a fee to the order depending on the billing state / county but the totals are not refreshed in the “Your order” section of the checkout.

This snippet will update the checkout totals when the billing state / county is selected on the checkout.

/**
 * Snippet Name:	WooCommerce Update Checkout Totals On Billing Sate / County Change
 * Snippet Author:	ecommercehints.com
 */

add_action( 'wp_footer', 'ecommercehints_update_checkout_totals' );
function ecommercehints_update_checkout_totals() { ?>
<script>
	jQuery( function( $ ) {
	$( 'form.checkout' ).on( 'change', 'select[name^="billing_state"]', function() {
		$( 'body' ).trigger( 'update_checkout' );
	});
});
</script>
<?php }