Title: Vatigo – EU VAT Validator Author: Stephan Published: April 23, 2026 Last modified: April 23, 2026 --- Search plugins ![](https://ps.w.org/vatigo-eu-vat-validator/assets/banner-772x250.png?rev=3514042) ![](https://ps.w.org/vatigo-eu-vat-validator/assets/icon-256x256.png?rev=3514042) # Vatigo – EU VAT Validator By [Stephan](https://profiles.wordpress.org/deb_ugger/) [Download](https://downloads.wordpress.org/plugin/vatigo-eu-vat-validator.1.0.0.zip) * [Details](https://vec.wordpress.org/plugins/vatigo-eu-vat-validator/#description) * [Reviews](https://vec.wordpress.org/plugins/vatigo-eu-vat-validator/#reviews) * [Installation](https://vec.wordpress.org/plugins/vatigo-eu-vat-validator/#installation) * [Development](https://vec.wordpress.org/plugins/vatigo-eu-vat-validator/#developers) [Support](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/) ## Description **Vatigo – EU VAT Validator** adds EU VAT ID validation to your WordPress forms with zero configuration. Install, activate, done. #### Features * Pattern validation for all **27 EU member states** * Works with **Contact Form 7**, **WPForms**, and **Fluent Forms** * Real-time inline feedback while the user types (WPForms) * Server-side validation on every submission * Custom error messages via settings page * Clean settings page showing active integrations and hooks used * Extensible: register custom integrations for any other form plugin * No external API calls – fully offline (free version) * GDPR-friendly: no personal data stored or transmitted #### Supported Countries AT, BE, BG, CY, CZ, DE, DK, EE, EL, ES, FI, FR, HR, HU, IE, IT, LT, LU, LV, MT, NL, PL, PT, RO, SE, SI, SK #### Usage with Contact Form 7 Add `[uid_vat uid-field]` or `[uid_vat* uid-field]` (required) to your form template. Example with placeholder: ``` [uid_vat* eu-vat-id placeholder "e.g. ATU12345678"] ``` #### Usage with WPForms Drag the **EU VAT ID** field from the field panel into your form. The field supports required validation, custom labels, placeholder text, and real-time inline feedback while the user types. #### Usage with Fluent Forms Drag the **EU VAT ID** field from the General Fields section into your form. #### Styling the inline feedback WPForms shows real-time validation feedback next to the field. To hide it, add this to your theme’s CSS: ``` .vatigo-feedback { display: none; } ``` #### For Developers Register integrations for any other form plugin: ``` add_action( 'vatigo_register_integrations', function( $manager ) { $manager->register( new My_Custom_Integration() ); } ); ``` Your class must extend `Vatigo_Integration_Base` and implement all abstract methods. ## Screenshots [⌊Settings page – active integrations with hook reference⌉⌊Settings page – active integrations with hook reference⌉[ Settings page – active integrations with hook reference [⌊EU VAT ID field in a WPForms contact form⌉⌊EU VAT ID field in a WPForms contact form⌉[ EU VAT ID field in a WPForms contact form [⌊Required field validation – all mandatory fields highlighted⌉⌊Required field validation– all mandatory fields highlighted⌉[ Required field validation – all mandatory fields highlighted [⌊Format validation – invalid EU country code error message⌉⌊Format validation – invalid EU country code error message⌉[ Format validation – invalid EU country code error message ## Installation 1. Upload the plugin folder to `/wp-content/plugins/` 2. Activate via **Plugins Installed Plugins** 3. Go to **Settings EU VAT Validator** 4. Enable integrations for the forms you use 5. Add the EU VAT ID field to your forms ## FAQ ### Does this call an external API? No. The free version validates patterns only, entirely offline. No data leaves your server. ### Does it support VIES live validation? Not in the free version. Pro version coming soon. ### Can I add support for another form plugin? Yes. Extend `Vatigo_Integration_Base` and register your class via the `vatigo_register_integrations` action hook. See the Settings page for a code example. ### Is this GDPR compliant? Yes. No personal data is stored or transmitted. VAT IDs are validated in memory and discarded. ### Can I customise the error messages? Yes. Go to **Settings EU VAT Validator** and enter a custom error message. Leave empty to use the default per-country messages. ### The inline feedback looks different from my theme – can I style it? Yes. The feedback element uses the class `.vatigo-feedback`. You can hide or restyle it via your theme’s CSS. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “Vatigo – EU VAT Validator” is open source software. The following people have contributed to this plugin. Contributors * [ Stephan ](https://profiles.wordpress.org/deb_ugger/) “Vatigo – EU VAT Validator” has been translated into 1 locale. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/vatigo-eu-vat-validator/contributors) for their contributions. [Translate “Vatigo – EU VAT Validator” into your language.](https://translate.wordpress.org/projects/wp-plugins/vatigo-eu-vat-validator) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/vatigo-eu-vat-validator/), check out the [SVN repository](https://plugins.svn.wordpress.org/vatigo-eu-vat-validator/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/vatigo-eu-vat-validator/) by [RSS](https://plugins.trac.wordpress.org/log/vatigo-eu-vat-validator/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.0 * Initial release * Contact Form 7 integration with SWV required validation support (CF7 5.6+) * WPForms integration with real-time inline feedback * Fluent Forms integration * Pattern validation for all 27 EU member states * Admin settings page with integration toggle and hook reference * Custom error message override * Extensible integration API ## Meta * Version **1.0.0** * Last updated **2 months ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **6.9.4** * PHP version ** 8.0 or higher ** * Languages * [Dutch](https://nl.wordpress.org/plugins/vatigo-eu-vat-validator/) and [English (US)](https://wordpress.org/plugins/vatigo-eu-vat-validator/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/vatigo-eu-vat-validator) * Tags * [b2b](https://vec.wordpress.org/plugins/tags/b2b/)[eu](https://vec.wordpress.org/plugins/tags/eu/) [validation](https://vec.wordpress.org/plugins/tags/validation/)[vat](https://vec.wordpress.org/plugins/tags/vat/) * [Advanced View](https://vec.wordpress.org/plugins/vatigo-eu-vat-validator/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/reviews/) ## Contributors * [ Stephan ](https://profiles.wordpress.org/deb_ugger/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/)