How to add a discount for a specific user in WooCommmerce

You can use PHP code like this in your child themes functions file or custom functionality/code snippets plugin.

No need for plugins or coupon codes, this code applies the discount based on the user I.D.

add_action('woocommerce_cart_calculate_fees', 'apply_discount_for_specific_user');
function apply_discount_for_specific_user() {
    // Get the current user
    $user = wp_get_current_user();
    
    // Replace with the specific user ID you want to target
    $specific_user_id = 5; // Change 5 to the ID of the user

    // Check if the current user's ID matches the specific user ID
    if ($user->ID == $specific_user_id) {
        // Define the discount amount
        $discount = 10; // 10 units of currency, e.g., $10

        // Add the discount to the cart
        WC()->cart->add_fee(__('Special Discount', 'your-text-domain'), -$discount);
    }
}

Usage – Settings

Swap out the value for the $specific_user_id from 5 and the value for $discount variable from 10.

And here’s the result for user with the id of 5 who gets a $10 discount on the cart page and at checkout.

About The Code

The code uses the woocommerce_cart_calculate_fees action hook which is located inside the class-wc-cart.php file in WooCommerce. Its wrapped in the calculate_fees() function which is used in the class-wc-cart-totals.php file to get fee objects from the cart.

You can use this hook to add fee’s and apply discounts conditionally in WooCommerce.

Here’s more code which uses the woocommerce_cart_calculate_fees hook.