WooCommerce: Refresh Checkout Upon Any Input Field Change

You may be aware that the WooCommerce Checkout page “order review” section reloads/refreshes every time there is a change of address – in this way shipping, taxes and optional fees are properly recalculated and customers are returned with the correct total.

But in case you add custom checkout fields that may cause a difference in pricing, or you want to keep the checkout UX consistent, or you have some other kinds of logic, it may be useful to refresh the order review section after a change on any checkout field. Enjoy!

PHP Snippet: Let Every Billing / Shipping / Account / Order Form Fields Update the WooCommerce Checkout Order Review

/**
 * @snippet       Refresh Checkout Upon Input Field Change
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 7
 * @community     https://businessbloomer.com/club/
 */

add_filter( 'woocommerce_checkout_fields', 'bbloomer_checkout_fields_trigger_refresh', 9999 );
 
function bbloomer_checkout_fields_trigger_refresh( $fields ) {
   $fields['billing']['billing_company']['class'][] = 'update_totals_on_change';
   
   // ADD AS MANY FIELDS AS YOU LIKE, SAME FORMAT, SEE LIST BELOW
   // E.G. $fields['account']['account_password']['class'][] = 'update_totals_on_change';

   return $fields;
}

Billing Fields

• billing_first_name
• billing_last_name
• billing_company
• billing_address_1
• billing_address_2
• billing_city
• billing_postcode
• billing_country
• billing_state
• billing_email
• billing_phone
• …any custom billing field ID

Shipping Fields

• shipping_first_name
• shipping_last_name
• shipping_company
• shipping_address_1
• shipping_address_2
• shipping_city
• shipping_postcode
• shipping_country
• shipping_state
• …any custom shipping field ID

Account Fields

• account_username
• account_password
• account_password-2
• …any custom account field ID

Order Fields

• order_comments
• …any custom order field ID

Where to add custom code?

You should place custom PHP in functions.php and custom CSS in style.css of your child theme: where to place WooCommerce customization?

This code still works, unless you report otherwise. To exclude conflicts, temporarily switch to the Storefront theme, disable all plugins except WooCommerce, and test the snippet again: WooCommerce troubleshooting 101

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Rodolfo Melogli

Business Bloomer Founder

Author, WooCommerce expert and WordCamp speaker, Rodolfo has worked as an independent WooCommerce freelancer since 2011. His goal is to help entrepreneurs and developers overcome their WooCommerce nightmares. Rodolfo loves travelling, chasing tennis & soccer balls and, of course, wood fired oven pizza. Follow @rmelogli