How to Set WooCommerce Buy One Get 50% off Discount Only For Specific Number of Products in the Cart?

With this WooCommerce customization, you can focus on clearing out specific products by offering a ‘Buy One, Get 50% Off’ discount. The discount activates when customers add at least two specific items (defined in the code) to their cart, encouraging additional purchases. This approach not only boosts sales but also helps manage stock more effectively.

Solution: Buy One Get 50% off Discount Only For Specific Number of Products in the Cart

This code implements a “Buy One, Get One 50% Off” promotion for specific products in the WooCommerce cart, limiting the discount to a predefined quantity per product.

add_action('woocommerce_cart_calculate_fees', 'ts_bogo_fifty_percent_off', 10, 1);

function ts_bogo_fifty_percent_off($cart) {
    if (is_admin() && !defined('DOING_AJAX')) {
        return;
    }

    $target_products = array(100, 456, 470); // Replace with your product IDs
    $product_limit = 2; // Set your product limit here
    $discount = 0;

    foreach ($cart->get_cart() as $cart_item) {
        if (in_array($cart_item['product_id'], $target_products)) {
            $qty = min($cart_item['quantity'], $product_limit);
            $product_limit -= $qty;
            $discount -= $qty * ($cart_item['data']->get_price() * 0.5);
            if ($product_limit <= 0) {
                break;
            }
        }
    }

    if ($discount < 0) {
        $cart->add_fee(__('BOGO 50% Off Discount'), $discount);
    }
}

Output

If you add ‘N’ items to your cart, you can make sure that ‘Buy One Get One’ discounts only apply to certain products, and you can set a limit on how many items get the discount. In the example below, the discount is applied to only two items, as set in the code.

Consider using similar BOGO strategies to boost your average order value. Additionally, let’s explore how to add free gift based on cart quantity in WooCommerce.