WooCommerce: Set Product Discount Percentage @ Product Admin

Let’s say you want to apply a 10% discount on a WooCommerce product. Its original price is $79.56. You go to the “Edit Product” page, go to the “Sale Price” input field, and enter ( $79.56 – 10% ) = $71.63. This is great as you can set the sale price, but this forces you to do some math and waste time.

What if there were a custom select dropdown, where you could directly define a fixed discount e.g. 10% or 25%, without having to calculate the final price?

Well, in today’s tutorial, we’ll see how we can display a dropdown in the Product Edit page, and at the same time how to edit the frontend price once a discount value is selected, so that you don’t need to worry about that manual sale price calculation. Enjoy!

With this custom select dropdown, I can define the WooCommerce product sale price by selecting a fixed discount rate, and stop worrying about math!

PHP Snippet: Define Product Discount Via a Custom Dropdown @ WooCommerce Edit Product Page

 * @snippet       Define Product Discount - WooCommerce
 * @how-to        Get CustomizeWoo.com FREE
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 8
 * @donate $9     https://businessbloomer.com/bloomer-armada/

add_action( 'woocommerce_product_options_pricing', 'bbloomer_set_percentage_discount' );

function bbloomer_set_percentage_discount() {
	global $product_object;
			'id' => '_pc_discount',
			'value' => get_post_meta( $product_object->get_id(), '_pc_discount', true ),
			'label' => 'Discount %',
			'options' => array(
				'0' => '0',
				'10' => '10',
				'25' => '25',
				'50' => '50',

add_action( 'save_post_product', 'bbloomer_save_percentage_discount' );
function bbloomer_save_percentage_discount( $product_id ) {
    global $typenow;
    if ( 'product' === $typenow ) {
        if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return;
		if ( isset( $_POST['_pc_discount'] ) ) {
            update_post_meta( $product_id, '_pc_discount', $_POST['_pc_discount'] );
add_filter( 'woocommerce_get_price_html', 'bbloomer_alter_price_display', 9999, 2 );
function bbloomer_alter_price_display( $price_html, $product ) {
    if ( is_admin() ) return $price_html;
    if ( '' === $product->get_price() ) return $price_html;
    if ( get_post_meta( $product->get_id(), '_pc_discount', true ) && get_post_meta( $product->get_id(), '_pc_discount', true ) > 0 ) {
        $orig_price = wc_get_price_to_display( $product );
        $price_html = wc_format_sale_price( $orig_price, $orig_price * ( 100 - get_post_meta( $product->get_id(), '_pc_discount', true ) ) / 100 );
    return $price_html;
add_action( 'woocommerce_before_calculate_totals', 'bbloomer_alter_price_cart', 9999 );
function bbloomer_alter_price_cart( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return;
    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 ) return;
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        $product = $cart_item['data'];
		if ( get_post_meta( $product->get_id(), '_pc_discount', true ) && get_post_meta( $product->get_id(), '_pc_discount', true ) > 0 ) {
	        $price = $product->get_price();
	        $cart_item['data']->set_price( $price * ( 100 - get_post_meta( $product->get_id(), '_pc_discount', true ) ) / 100 );

add_filter( 'woocommerce_product_is_on_sale', 'bbloomer_is_onsale_if_percentage_discount', 9999, 2 );

function bbloomer_is_onsale_if_percentage_discount( $on_sale, $product ) {
   if ( get_post_meta( $product->get_id(), '_pc_discount', true ) && get_post_meta( $product->get_id(), '_pc_discount', true ) > 0 ) {
      $on_sale = true;
   return $on_sale;

Where to add custom code?

You should place PHP snippets at the bottom of your child theme functions.php file and CSS at the bottom of its style.css file. Make sure you know what you are doing when editing such files - if you need more guidance, please take a look at my guide "Should I Add Custom Code Via WP Editor, FTP or Code Snippets?" and my video tutorial "Where to Place WooCommerce Customization?"

Does this snippet (still) work?

Please let me know in the comments if everything went as expected. I would be happy to revise the snippet if you report otherwise (please provide screenshots). I have tested this code with Storefront theme, the WooCommerce version listed above and a WordPress-friendly hosting.

If you think this code saved you time & money, feel free to join 17,000+ WooCommerce Weekly subscribers for blog post updates and 250+ Business Bloomer supporters for 365 days of WooCommerce benefits. Thank you in advance!

Need Help with WooCommerce?

Check out these free video tutorials. You can learn how to customize WooCommerce without unnecessary plugins, how to properly configure the WooCommerce plugin settings and even how to master WooCommerce troubleshooting in case of a bug!

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.

6 thoughts on “WooCommerce: Set Product Discount Percentage @ Product Admin

  1. Thank you so much!the code is work fine but a have a small problem the on sale product label doesn’t show like for exemple -34%

    1. Good point! Try the revised snippet please

  2. Excellent, tested with the latest version of Woocommerce and it works, too bad it’s only for simple products and not for variable products

  3. Thank you so much! This is just what I was looking for. As a small home business, I cannot afford to pay annual fees for extra plugin just to do this action. Thanks so much for sharing this!

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