Title: Adding Extra Tax or Amount
Author: aversus
Published: <strong>April 18, 2026</strong>
Last modified: April 22, 2026

---

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![](https://s.w.org/plugins/geopattern-icon/adding-extra-tax-or-amount.svg)

# Adding Extra Tax or Amount

 By [aversus](https://profiles.wordpress.org/aversus/)

[Download](https://downloads.wordpress.org/plugin/adding-extra-tax-or-amount.zip)

 * [Details](https://test.wordpress.org/plugins/adding-extra-tax-or-amount/#description)
 * [Reviews](https://test.wordpress.org/plugins/adding-extra-tax-or-amount/#reviews)
 *  [Installation](https://test.wordpress.org/plugins/adding-extra-tax-or-amount/#installation)
 * [Development](https://test.wordpress.org/plugins/adding-extra-tax-or-amount/#developers)

 [Support](https://wordpress.org/support/plugin/adding-extra-tax-or-amount/)

## Description

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 `update_checkout` 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.

## Installation

 1. Upload the `adding-extra-tax-or-amount` folder to the `/wp-content/plugins/` directory.
 2. Activate the plugin through the ‘Plugins’ menu in WordPress.
 3. Go to **Settings > Extra Tax/Amount** to configure your fee settings.

## FAQ

### Does it work with all themes?

Yes, it is designed to work with any WooCommerce compatible theme using standard
AJAX checkout triggers.

### Can I change the box color?

Yes, background and text colors are fully customizable in the admin settings.

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“Adding Extra Tax or Amount” is open source software. The following people have 
contributed to this plugin.

Contributors

 *   [ aversus ](https://profiles.wordpress.org/aversus/)

[Translate “Adding Extra Tax or Amount” into your language.](https://translate.wordpress.org/projects/wp-plugins/adding-extra-tax-or-amount)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/adding-extra-tax-or-amount/),
check out the [SVN repository](https://plugins.svn.wordpress.org/adding-extra-tax-or-amount/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/adding-extra-tax-or-amount/)
by [RSS](https://plugins.trac.wordpress.org/log/adding-extra-tax-or-amount/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.6.1

 * Feature: Moved the optional tax box from the cart page to the checkout page for
   better flow.
 * Improvement: Integrated with `update_checkout` AJAX trigger for seamless updates.
 * Security: Maintained all output escaping and sanitization standards.

#### 1.5.2

 * Fixed security issue: Escaped nonce output in JS using esc_js().
 * Improved output security throughout the plugin.

#### 1.5.1

 * Fixed register_setting sanitization.
 * Updated “Tested up to” version to 6.9.
 * Removed invalid donate link.

#### 1.5

 * Final stable version with optimized AJAX triggers and WordPress.org compliance.

#### 1.0

 * Initial release.

## Meta

 *  Version **1.6.1**
 *  Last updated **3 weeks ago**
 *  Active installations **Fewer than 10**
 *  WordPress version ** 5.0 or higher **
 *  Tested up to **6.9.4**
 *  PHP version ** 7.4 or higher **
 *  Language
 * [English (US)](https://wordpress.org/plugins/adding-extra-tax-or-amount/)
 * Tags
 * [checkout fee](https://test.wordpress.org/plugins/tags/checkout-fee/)[Extra Charge](https://test.wordpress.org/plugins/tags/extra-charge/)
   [fee](https://test.wordpress.org/plugins/tags/fee/)[tax](https://test.wordpress.org/plugins/tags/tax/)
   [woocommerce](https://test.wordpress.org/plugins/tags/woocommerce/)
 *  [Advanced View](https://test.wordpress.org/plugins/adding-extra-tax-or-amount/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/adding-extra-tax-or-amount/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/adding-extra-tax-or-amount/reviews/)

## Contributors

 *   [ aversus ](https://profiles.wordpress.org/aversus/)

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/adding-extra-tax-or-amount/)