Title: Vatigo – EU VAT & UID Validator for Contact Form 7, WPForms & Fluent Forms Author: Stephan Published: 23. April 2026 Last modified: 28. September 2026 --- Plugins suchen ![](https://ps.w.org/vatigo-eu-vat-validator/assets/banner-772x250.png?rev=3725765) ![](https://ps.w.org/vatigo-eu-vat-validator/assets/icon.svg?rev=3725766) # Vatigo – EU VAT & UID Validator for Contact Form 7, WPForms & Fluent Forms Von [Stephan](https://profiles.wordpress.org/deb_ugger/) [Herunterladen](https://downloads.wordpress.org/plugin/vatigo-eu-vat-validator.1.0.2.zip) * [Details](https://de.wordpress.org/plugins/vatigo-eu-vat-validator/#description) * [Rezensionen](https://de.wordpress.org/plugins/vatigo-eu-vat-validator/#reviews) * [Installation](https://de.wordpress.org/plugins/vatigo-eu-vat-validator/#installation) * [Entwicklung](https://de.wordpress.org/plugins/vatigo-eu-vat-validator/#developers) [Support](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/) ## Beschreibung **Vatigo** checks EU VAT identification numbers directly in your WordPress forms– no coding, no API key, no configuration. Install, activate, add the field. Done. Built for **B2B forms**: contact and quote requests, dealer and partner registrations, wholesale sign-ups, event registrations with company invoicing – anywhere you need a correctly formatted VAT ID before the form is submitted. Works with **Contact Form 7**, **WPForms** and **Fluent Forms**. #### Why Vatigo? * **Catches typos before they reach your inbox** – no more „ATU1234567“ (one digit short) or „DE 123 456 78“ in your invoices * **All 27 EU member states** with country-specific format rules * **Tolerant input** – spaces, dots, dashes and lowercase letters are normalized automatically (`atu 1234-5678` `ATU12345678`) * **Helpful error messages** – the user sees exactly which country format is expected, including an example * **Real-time inline feedback** while typing (WPForms) * **Server-side validation** on every submission – works even with JavaScript disabled * **100 % offline** – no external requests, no tracking, nothing leaves your server * **GDPR-friendly** – VAT IDs are validated in memory and never stored * **Custom error messages** via the settings page * **Developer-friendly** – add any other form plugin through a simple integration API #### Supported countries and VAT ID formats * **Austria** – UID-Nummer – `ATU12345678` * **Belgium** – BTW / n° TVA – `BE0123456789` or `BE1123456789` * **Bulgaria** – ДДС номер – `BG123456789` * **Croatia** – PDV ID – `HR12345678901` * **Cyprus** – ΦΠΑ – `CY12345678A` * **Czech Republic** – DIČ – `CZ12345678` * **Denmark** – CVR / moms – `DK12345678` * **Estonia** – KMKR – `EE123456789` * **Finland** – ALV-numero – `FI12345678` * **France** – numéro de TVA intracommunautaire – `FRXX123456789` * **Germany** – USt-IdNr. – `DE123456789` * **Greece** – ΑΦΜ – `EL123456789` * **Hungary** – közösségi adószám – `HU12345678` * **Ireland** – VAT number – `IE1234567A` * **Italy** – Partita IVA – `IT12345678901` * **Latvia** – PVN – `LV12345678901` * **Lithuania** – PVM kodas – `LT123456789` * **Luxembourg** – n° TVA – `LU12345678` * **Malta** – VAT number – `MT12345678` * **Netherlands** – btw-id – `NL123456789B01` * **Poland** – NIP – `PL1234567890` * **Portugal** – NIF – `PT123456789` * **Romania** – CIF / CUI – `RO12345678` * **Slovakia** – IČ DPH – `SK1234567890` * **Slovenia** – ID za DDV – `SI12345678` * **Spain** – NIF / CIF – `ESA12345678` * **Sweden** – momsregistreringsnummer – `SE123456789012` #### Contact Form 7: EU VAT ID field Add the `uid_vat` form tag to your form template: ``` [uid_vat uid-field] – optional field [uid_vat* uid-field] – required field ``` With placeholder: ``` [uid_vat* eu-vat-id placeholder "e.g. ATU12345678"] ``` Required validation uses the Contact Form 7 Schema-Woven Validation (CF7 5.6+). #### WPForms: EU VAT ID field Drag the **EU VAT ID** field from the field panel into your form. It supports required validation, custom labels, placeholder text and real-time inline feedback while the user types. #### Fluent Forms: EU VAT ID field Drag the **EU VAT ID** field from the _General Fields_ section into your form. #### Styling the inline feedback The real-time feedback (WPForms) uses the class `.vatigo-feedback`. To hide it, add this to your theme’s CSS: ``` .vatigo-feedback { display: none; } ``` #### For developers Register an integration 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. The settings page shows a complete example. #### Coming in Vatigo Pro * Live validation against the official EU **VIES** database (checks whether the VAT number actually exists) * More features for B2B workflows ## Screenshots [⌊Settings page – enable the EU VAT validation for Contact Form 7, WPForms and Fluent Forms⌉⌊Settings page – enable the EU VAT validation for Contact Form 7, WPForms and Fluent Forms⌉[ Settings page – enable the EU VAT validation for Contact Form 7, WPForms and Fluent Forms [⌊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 for the VAT ID field⌉⌊Required field validation for the VAT ID field⌉[ Required field validation for the VAT ID field [⌊Format validation – clear error message with an example of the expected VAT ID format⌉⌊Format validation – clear error message with an example of the expected VAT ID format⌉[ Format validation – clear error message with an example of the expected VAT ID format ## Installation 1. In your WordPress admin, go to **Plugins Add New** and search for „Vatigo“. 2. Click **Install Now**, then **Activate**. 3. Go to **Settings EU VAT Validator** and enable the integrations for the form plugins you use. 4. Add the **EU VAT ID** field to your form (see the instructions for your form plugin above). ## FAQ ### What exactly does Vatigo check? Vatigo checks whether a VAT ID has a valid format for its EU country: correct country prefix, correct length and the right mix of digits and letters. This catches the vast majority of typos and incomplete entries before the form is submitted. ### Does Vatigo check whether the VAT number really exists (VIES)? Not in the free version. The free version validates the format only, entirely offline. A live check against the official EU VIES database is planned for Vatigo Pro. ### Which form plugins are supported? Contact Form 7, WPForms (Lite and Pro) and Fluent Forms. Other form plugins can be connected through the developer API. ### Does it work with the Austrian UID and the German USt-IdNr.? Yes. „UID-Nummer“ (Austria), „USt-IdNr.“ (Germany), „BTW-nummer“ (Netherlands, Belgium),„ numéro de TVA“ (France), „Partita IVA“ (Italy) and „NIF/CIF“ (Spain) are all national names for the EU VAT identification number. Vatigo supports all 27 EU member states. ### What about Swiss, UK or Norwegian VAT numbers? Vatigo validates EU VAT IDs only. Switzerland (CHE…), the United Kingdom (GB…, since Brexit) and Norway are not EU member states and are not supported. ### Can users type the VAT ID with spaces or lowercase letters? Yes. Spaces, dots and dashes are removed and letters are converted to uppercase before validation, so `atu 1234 5678` is accepted as `ATU12345678`. ### Does this call an external API? No. All validation happens on your server. No data is sent to third parties. ### Is this GDPR compliant? Yes. Vatigo does not store or transmit any personal data. VAT IDs are validated in memory and discarded. What happens with the submitted form data is up to your form plugin. ### Can I customise the error messages? Yes. Go to **Settings EU VAT Validator** and enter a custom error message. Leave the field empty to use the default country-specific messages, which include an example of the expected format. ### 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. ### 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. ## Rezensionen Zu diesem Plugin liegen noch keine Rezensionen vor. ## Mitwirkende und Entwickler „Vatigo – EU VAT & UID Validator for Contact Form 7, WPForms & Fluent Forms“ ist Open-Source-Software. Folgende Menschen haben an diesem Plugin mitgewirkt: Mitwirkende * [ Stephan ](https://profiles.wordpress.org/deb_ugger/) „Vatigo – EU VAT & UID Validator for Contact Form 7, WPForms & Fluent Forms“ wurde in 6 Sprachen übersetzt. Danke an [die Übersetzer](https://translate.wordpress.org/projects/wp-plugins/vatigo-eu-vat-validator/contributors) für ihre Mitwirkung. [Übersetze „Vatigo – EU VAT & UID Validator for Contact Form 7, WPForms & Fluent Forms“ in deine Sprache.](https://translate.wordpress.org/projects/wp-plugins/vatigo-eu-vat-validator) ### Interessiert an der Entwicklung? [Durchstöbere den Code](https://plugins.trac.wordpress.org/browser/vatigo-eu-vat-validator/), sieh dir das [SVN-Repository](https://plugins.svn.wordpress.org/vatigo-eu-vat-validator/) an oder abonniere das [Entwicklungsprotokoll](https://plugins.trac.wordpress.org/log/vatigo-eu-vat-validator/) per [RSS](https://plugins.trac.wordpress.org/log/vatigo-eu-vat-validator/?limit=100&mode=stop_on_copy&format=rss). ## Änderungsprotokoll #### 1.0.2 * Fix: Belgian VAT numbers starting with 1 (issued since 2023) are now accepted #### 1.0.1 * Tested with WordPress 7.0 * Improved plugin description and documentation #### 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 **1.0.2** * Zuletzt aktualisiert **vor 1 Woche** * Aktive Installationen **weniger als 10** * WordPress-Version ** 6.0 oder höher ** * Getestet bis **7.0.7** * PHP-Version ** 8.0 oder höher ** * Sprachen * [Czech](https://cs.wordpress.org/plugins/vatigo-eu-vat-validator/), [Dutch](https://nl.wordpress.org/plugins/vatigo-eu-vat-validator/), [Dutch (Belgium)](https://nl-be.wordpress.org/plugins/vatigo-eu-vat-validator/), [English (US)](https://wordpress.org/plugins/vatigo-eu-vat-validator/), [Hungarian](https://hu.wordpress.org/plugins/vatigo-eu-vat-validator/), [Polish](https://pl.wordpress.org/plugins/vatigo-eu-vat-validator/) und [Portuguese (Brazil)](https://br.wordpress.org/plugins/vatigo-eu-vat-validator/). * [Übersetze in deine Sprache](https://translate.wordpress.org/projects/wp-plugins/vatigo-eu-vat-validator) * Schlagwörter * [contact form 7](https://de.wordpress.org/plugins/tags/contact-form-7/)[uid](https://de.wordpress.org/plugins/tags/uid/) [vat](https://de.wordpress.org/plugins/tags/vat/)[VAT number](https://de.wordpress.org/plugins/tags/vat-number/) [WPForms](https://de.wordpress.org/plugins/tags/wpforms/) * [Erweiterte Ansicht](https://de.wordpress.org/plugins/vatigo-eu-vat-validator/advanced/) ## Bewertungen Es wurden noch keine Rezensionen eingereicht. [Deine Rezension](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/reviews/#new-post) [Alle Rezensionen anzeigen](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/reviews/) ## Mitwirkende * [ Stephan ](https://profiles.wordpress.org/deb_ugger/) ## Support Möchtest du etwas mitteilen? Brauchst du Unterstützung? [Support-Forum anzeigen](https://wordpress.org/support/plugin/vatigo-eu-vat-validator/)