VIESAC – Free VAT Validation for WooCommerce

VIESAC adds free VAT validation to WooCommerce checkout. It validates EU, Norwegian, Swiss, and Northern Ireland VAT numbers and stores VIESAC certificates for audit-ready B2B orders.

Features

• Free unlimited VAT validation – Validate VAT numbers at WooCommerce checkout
• 15 VIESAC audits per month – Full audits with VIES certificate storage
• Lifetime storage – VIES certificates stored permanently
• EU VIES compliance – VAT number validation for EU businesses
• B2B tax exemption – Automatic WooCommerce tax removal when VAT is valid
• Certificate download – PDF certificate available in order details
• Company and VAT fields – Adds company name and VAT number fields to checkout
• Checkout blocks support – Works with WooCommerce Blocks
• HPOS compatible – Compatible with WooCommerce Custom Order Tables

Supported countries

All EU member states plus Northern Ireland (XI), Norway (NO), and Switzerland (CH).

Getting started

1. Install and activate the plugin.
2. Go to WooCommerce -> VIESAC.
3. Get your free API key from https://viesac.eu/app/api.
4. Enter the API key and save.

Languages

VIESAC is available in 25+ languages: English, German, French, Spanish, Italian, Polish, Dutch, Romanian, Greek, Czech, Swedish, Hungarian, Portuguese, Bulgarian, Danish, Finnish, Slovak, Croatian, Latvian, Estonian, Lithuanian, Slovenian, Russian, Turkish, Arabic, Ukrainian.

External services

This plugin connects to the VIESAC API to validate VAT numbers, retrieve account usage information, and optionally create audit records with certificate storage.

It sends data to https://viesac.eu only when a store administrator enters an API key and the plugin performs one of these actions:

• VAT validation and audit creation via https://viesac.eu/api/v1/audits
• Account and usage lookup via https://viesac.eu/api/v1/account

Depending on the action, the plugin may send:

• VAT country code and VAT number
• Company name
• Company address
• Order number
• Order audit details in XML format for certificate generation

Service provider documentation:

• Privacy Policy: https://viesac.eu/privacy-policy
• Terms of Service: https://viesac.eu/terms-of-service