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Adding Extra Tax or Amount is a lightweight WooCommerce extension that provides a customizable checkbox on the checkout page. When checked, it adds a pre-defined tax or extra fee to the order total instantly via AJAX.
Key Features: 
* Checkout Integration: Now focused exclusively on the checkout page for a better user experience and to prevent duplicate fees. 
* Fully Customizable: Change colors, text, and hover effects from the admin panel. 
* Calculation Types: Choose between a percentage (%) of the subtotal or a fixed amount. 
* Real-time Updates: Uses WooCommerce’s <code>update_checkout</code> AJAX trigger to update totals without page refresh. 
* Open Sans Font: Clean and modern typography. 
* Enable/Disable: Easily toggle the plugin from the settings page.
Developed by Mehmet Balcı.

Adding Extra Tax or Amount

Allows customers to add an optional tax or fee on the checkout page with real-time AJAX updates.

ByteJutsu

ByteJutsu Fixed Order Fee For WooCommerce lets you add a fixed fee to WooCommerce orders, with an adjustable amount and label from the WooCommerce settings.
This plugin provides: 
* A fixed fee configurable from the WooCommerce settings page. 
* Options to set the fee amount and the fee label. 
* The fee appears in the cart, checkout, and order totals. 
* Automatically applies the fee for customers during checkout, and for admins when creating or editing orders.
Key Features: 
* Adjustable fixed fee for all orders. 
* Customizable fee label. 
* Lightweight implementation that does not modify WooCommerce core files.
<h4>How to Use</h4>
<ol>
<li>Install and activate the plugin.</li>
<li>Make sure WooCommerce taxes are enabled (otherwise the Tax tab is hidden).</li>
<li>Go to WooCommerce > Settings > Tax > Fixed order fee.</li>
<li>Set the fixed fee amount and label, then save changes.</li>
<li>The fee will be applied to new WooCommerce orders.</li>
</ol>
<h4>Requirements</h4>
<ul>
<li>WordPress 5.0 or higher.</li>
<li>WooCommerce 4.0 or higher.</li>
<li>PHP 7.0 or higher.</li>
</ul>
<h3>License</h3>
This plugin is distributed under the GPLv2 or later. 
See the included license.txt file for full license text.
<h3>Support</h3>
For inquiries, feature requests, or support, please contact: contact@bytejutsu.dev

ByteJutsu Fixed Order Fee for WooCommerce

This plugin adds a customizable fixed fee to WooCommerce orders with an easy-to-configure amount and label.

Adding Extra Tax or Amount vs ByteJutsu Fixed Order Fee for WooCommerce