WooCommerce: Slashed Cart Subtotal if Coupon @ Cart

This is a nice snippet to let users know what the original cart amount was by slashing the cart subtotal and showing the cart subtotal after discounts on the same line (Cart totals > subtotal).

You can then hide the coupon code line if you wish!

PHP Snippet: show slashed original and discounted subtotal @ WooCommerce Cart

/**
 * @snippet       Cart subtotal slashed if coupon applied @ WooCommerce Cart
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @testedwith    WooCommerce 6
 * @community     https://businessbloomer.com/club/
 */
 
add_filter( 'woocommerce_cart_subtotal', 'bbloomer_slash_cart_subtotal_if_discount', 9999, 3 );

function bbloomer_slash_cart_subtotal_if_discount( $cart_subtotal, $compound, $cart ){
   if ( $cart->get_cart_discount_total() > 0 ) {
		return wc_format_sale_price( $cart->get_subtotal(), $cart->get_subtotal() - $cart->get_cart_discount_total() );
	}
   return $cart_subtotal;
}

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