How to Add Custom Fee / Transaction Fee in WooCommerce?

Web Development
,
1

I am using WooCommerce in my website. When customers make payments using payment gateways like PayPal or Stripe, these payment companies charge a transaction fee. I want to include this fee in the total cart price displayed on the checkout page. I want customers to see the total amount they need to pay, including the transaction fee, before making the payment. Can someone guide me on how to achieve this?

2

You can use woocommerce_cart_calculate_fees hook and WC()->cart->add_fee() to add custom fee to the checkout page. Here is few example.

1. Adding a Fixed Fee:

add_action('woocommerce_cart_calculate_fees', function() {
	if (is_admin() && !defined('DOING_AJAX')) {
		return;
	}
	WC()->cart->add_fee(__('A small fee', 'txtdomain'), 5);
});

2. Adding a Percentage-based Fee:

add_action('woocommerce_cart_calculate_fees', function() {
	if (is_admin() && !defined('DOING_AJAX')) {
		return;
	}
	
	$percentage = 0.05;  // 5% fee
	$percentage_fee = (WC()->cart->get_cart_contents_total() + WC()->cart->get_shipping_total()) * $percentage;
 
	WC()->cart->add_fee(__('A small fee', 'txtdomain'), $percentage_fee);
});

3. Adding a fee based on cart totals:

add_action('woocommerce_cart_calculate_fees', function() {
	if (is_admin() && !defined('DOING_AJAX')) {
		return;
	}
 
	$cart_total = WC()->cart->get_cart_contents_total();
	if ($cart_total < 500) {
		WC()->cart->add_fee(__('Fee for small transactions', 'txtdomain'), 50);
	}
});

4. Adding a fee based on shipping location:

add_action('woocommerce_cart_calculate_fees', function() {
	if (is_admin() && !defined('DOING_AJAX')) {
		return;
	}
 
	$shipping_country = WC()->customer->get_shipping_country();	
	if ($shipping_country == 'NO') {
		WC()->cart->add_fee(__('Fee for shipping to Norway', 'txtdomain'), 50);
	}
});

5. Adding a fee based on chosen shipping method:

add_action('woocommerce_cart_calculate_fees', function() {
	if (is_admin() && !defined('DOING_AJAX')) {
		return;
	}
 
	$chosen_shipping_method = WC()->session->get('chosen_shipping_methods');
 
	if (strpos($chosen_shipping_method[0], 'flat_rate') !== false) {
		WC()->cart->add_fee(__('Fee for flat rate shipping', 'txtdomain'), 50);
	}
});

6. Adding a fee based on chosen payment method:

add_action('woocommerce_cart_calculate_fees', function() {
	if (is_admin() && !defined('DOING_AJAX')) {
		return;
	}
 
	$chosen_payment_method = WC()->session->get('chosen_payment_method');
	if ($chosen_payment_method == 'paypal') {
		WC()->cart->add_fee(__('Paypal Fee', 'txtdomain'), 50);
	}
});

add_action('woocommerce_review_order_before_payment', function() {
    ?><script type="text/javascript">
        (function($){
            $('form.checkout').on('change', 'input[name^="payment_method"]', function() {
                $('body').trigger('update_checkout');
            });
        })(jQuery);
    </script><?php
});

Use the code based on your need.