Showing Sale Prices in the WooCommerce Checkout

By default WooCommerce displays regular price (Provided there is no sale price available) or Sale Price with striked regular price on Shop and Single Product pages.

But if you would like to Display Regular/Sale Price in the Woocommerce chekout. here is a simple method to achieve this. Let’s see.

Add below line of code at the end of your theme’s functions.php file of your active child theme (or theme) and Save the file.

function show_sale_price_at_checkout( $subtotal, $cart_item, $cart_item_key ) {
    
    $product = $cart_item['data'];
    $quantity = $cart_item['quantity'];
    if ( ! $product ) {
        return $subtotal;
    }
    $regular_price = $sale_price = $suffix = '';
    if ( $product->is_taxable() ) {
        if ( 'excl' === WC()->cart->tax_display_cart ) {
            $regular_price = wc_get_price_excluding_tax( $product, array( 'price' => $product->get_regular_price(), 'qty' => $quantity ) );
            $sale_price    = wc_get_price_excluding_tax( $product, array( 'price' => $product->get_sale_price(), 'qty' => $quantity ) );
            if ( WC()->cart->prices_include_tax && WC()->cart->tax_total > 0 ) {
                $suffix .= ' ' . WC()->countries->ex_tax_or_vat() . '';
            }
        } else {
            $regular_price = wc_get_price_including_tax( $product, array( 'price' => $product->get_regular_price(), 'qty' => $quantity ) );
            $sale_price = wc_get_price_including_tax( $product, array( 'price' => $product->get_sale_price(), 'qty' => $quantity ) );
            if ( ! WC()->cart->prices_include_tax && WC()->cart->tax_total > 0 ) {
                $suffix .= ' ' . WC()->countries->inc_tax_or_vat() . '';
            }
        }
    } else {
        $regular_price    = $product->get_price() * $quantity;
        $sale_price       = $product->get_sale_price() * $quantity;
    }
    if ( $product->is_on_sale() && ! empty( $sale_price ) ) {
        $price = wc_format_sale_price(
                     wc_get_price_to_display( $product, array( 'price' => $product->get_regular_price(), 'qty' => $quantity ) ),
                     wc_get_price_to_display( $product, array( 'qty' => $quantity ) )
                 ) . $product->get_price_suffix();
    } else {
        $price = wc_price( $regular_price ) . $product->get_price_suffix();
    }
   
    $price = $price . $suffix;
    return $price;
}
add_filter( 'woocommerce_cart_item_subtotal', 'show_sale_price_at_checkout', 10, 3 );