This is an info Alert.
xpay
  • Product
    • Become Agent-Ready
      • Merchants
        Agentic Commerce — list your store across ChatGPT, Gemini, Claude & Perplexity
      • Publishers
        Monetize your content when AI agents read, cite, or train on it
      • SaaS Companies
        Treat AI agents as first-class customers with agent-priced checkout
    • Monetize
      • Monetize MCP Server
        Charge per call on any MCP server in 2 minutes
      • Monetize AI Agents
        Turn n8n, Zapier, Activepieces workflows into revenue
  • Resources
    • xpay Ecosystem
      • xpay✦ Tools
        1,000+ pay-per-use tools for your AI agents
      • Agent-Ready SaaS Index
        25,481 SaaS scored on agent-buyability
      • SaaS Pricing Database
        Pricing pages indexed across 1,000+ categories
      • Shopify Apps Directory
        Every Shopify app, with its full review history
      • WooCommerce Plugins Directory
        Every WooCommerce plugin, scored on how well it is maintained
      • GitHub
        Open source repositories
    • Agent Building
      • Agent Frameworks
        AI frameworks for building multi-agent systems
      • x402 Integration
        AI frameworks with x402 payment integration
      • Networks
        Blockchain networks supporting x402
    • Company
      • About xpay✦
        Our mission, products, and protocols
      • Blog
        Latest insights and updates
      • Docs
        Complete xpay documentation
  • Pricing
  • Blog
  • Docs
Get Started

  1. xpay✦ Commerce

  3. Directory

  5. WooCommerce plugins

  7. VIESAC – Free VAT Validation for WooCommerce

VIESAC – Free VAT Validation for WooCommerce

EU VIES and UK HMRC VAT validation for WooCommerce checkout, with B2B tax handling and stored compliance proof.

10+ active installs
5.0
(1 ratings)
Free on WordPress.org
View on WordPress.orgSupport forum
Will this break my store?

What the WordPress.org registry says about keeping VIESAC – Free VAT Validation for WooCommerce running.

WordPress compatibility
Tested to 7.1
Tested against the WordPress branch in use today.
Last updated
9 days ago
Requires PHP
7.2
Your host must be running at least this version.
Requires WordPress
5.9
Requires other plugins
woocommerce
These must be installed and active first.
Contributors
1
A single maintainer. Worth knowing if the plugin is load-bearing for your store.
10+ active installsWordPress.org reports installs in bands, not exact counts.
Maintenance & trust

Scored on how VIESAC – Free VAT Validation for WooCommerce is looked after — not on how many stores run it.

Well maintained
Not enough public feedback to put a confident number on this one. Little public feedback — score rests mostly on release activity. What we can see is below.
Maintenance
35 / 35
Updated 4 days ago.
WordPress compatibility
20 / 20
Tested to WP 7.1 (current).
Support responsiveness
Not enough data
Only 1 support thread(s) — not enough to judge.
Merchant satisfaction
10 / 15
5.0/5 across 1 rating(s).
Listing transparency
10 / 10
Provides: screenshots, description, homepage
1 of 5 measures had too little evidence to score. They are left out of the total rather than counted as zero — otherwise a plugin would be marked down for being small rather than for being poorly kept.Measured 2026-09-07 from the WordPress.org plugin registry.
Ratings

5.0

1 rating
5★1
4★0
3★0
2★0
1★0
Every rating WordPress.org holds for this plugin, not a sample. Written reviews live in the plugin's WordPress.org reviews forum.

VIESAC adds country-specific VAT validation to WooCommerce checkout. It checks VAT number formats locally for EU countries, the United Kingdom, Norway, and Switzerland. With a VIESAC API key, live checks use EU VIES for EU and Northern Ireland (XI) VAT numbers and the HMRC VAT API for Great Britain (GB). Eligible orders receive stored compliance proof for audit-ready B2B records.

Features

  • Country-specific format checks – Validate VAT number formats locally without an API key
  • Live VAT validation – Validate VAT numbers through VIESAC before applying 0% VAT
  • UK VAT checks via HMRC – Validate Great Britain (GB) VAT numbers through the HMRC VAT API
  • Clear plan usage – See monthly VAT checks, hourly live-check capacity, and stored-proof usage separately
  • Stored proof allowance – Full audit records and VIES certificates use a separate plan allowance
  • Status without proof – When the stored-proof allowance is exhausted, orders keep their VALID/INVALID status and clearly show that no proof was stored
  • Lifetime storage – VIES certificates stored permanently
  • EU VIES compliance – VAT number validation for EU businesses
  • B2B tax exemption – Automatic WooCommerce tax removal only after live VAT validation succeeds
  • 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
  • Multilingual compatible – Works with WPML, Polylang, TranslatePress, and standard WordPress language packs

Supported countries

All EU member states, Northern Ireland (XI) through EU VIES, Great Britain (GB) through the HMRC VAT API, plus 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, Norwegian Bokmål, 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.

Multilingual compatibility

VIESAC uses standard WordPress gettext for its interface and VAT validation messages, so it works with WordPress language packs and the Gettext translation tools in WPML, Polylang, and TranslatePress.

Custom VAT field label and VAT field placeholder values are supported too:

  • WPML: translate them in WPML -> String Translation after saving the VIESAC settings.
  • Polylang: translate them in Languages -> String translations after saving the VIESAC settings.
  • TranslatePress: translate them as regular strings in its translation editor after visiting checkout in the target language.

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:

  • Live VAT validation via https://viesac.eu/api/v1/validate
  • VAT 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

Do I need to pay?

Local VAT format validation is unlimited and works without an API key. Live VAT validation and stored audit proof follow your VIESAC plan:

  • Free: 100 live VAT validations per month (10/hour) and 5 stored audits total
  • Starter: 1,000 live VAT validations per month (100/hour) and 100 stored audits per month
  • Pro: 10,000 live VAT validations per month (500/hour) and 500 stored audits per month
  • Business: 30,000 live VAT validations per month (1,000/hour) and 3,000 stored audits per month
  • Enterprise: custom/unlimited validation and audit capacity

What is an audit?

An audit is a full validation record that stores technical proof and makes the certificate available for the order. Checkout format checks are unlimited; live VAT validation uses monthly and hourly limits, while stored proof uses a separate audit allowance.

What happens when my stored-proof allowance is exhausted?

Checkout still performs live VAT validation while validation capacity is available. The WooCommerce order keeps the VALID or INVALID status, shows “No proof stored,” and displays an upgrade notice. No audit record or certificate is stored for that order.

What happens with LIMITED VALID and PENDING?

These statuses can be returned when a full audit is created and VIES is temporarily unavailable. WooCommerce stores the audit reference and displays LIMITED VALID or PENDING without a certificate; VIESAC retries the saved audit automatically. When the audit allowance is already exhausted, no audit exists to retry, so the plugin records only the available live VALID/INVALID result and clearly marks it as “No proof stored.”

Does it work with WooCommerce Blocks?

Yes. VIESAC is compatible with WooCommerce Blocks checkout.

Categories
Currency & tax
Plugin details
Version1.0.14
Last updated2026-09-03 9:37am GMT
Added2026-06-05
Requires WordPress5.9
Tested up to7.1
Requires PHP7.2
Tags on WordPress.org
hmrc
UK VAT
vat
vies
woocommerce
Alternatives
Other plugins in the same categories.
Price Based on Country for WooCommerce
20K+ installs
4.8(262)
WebPlanex: GST Invoice India
400+ installs
5.0(36)
FOX – Currency Switcher Professional for WooCommerce
50K+ installs
4.4(250)
Quaderno: Global Tax & Invoicing Automation for WooCommerce
500+ installs
4.7(18)
Saudi Currency
100+ installs
5.0(3)
YayCurrency – WooCommerce Multi-Currency Switcher
8K+ installs
4.8(111)
xpay

The agent-readiness stack for the AI shopping era — helping merchants, publishers and SaaS companies get discovered, cited and transacted with by ChatGPT, Perplexity, Claude, Gemini and the custom shopping agents underneath them.

CompanyAgentically Inc. (d/b/a xpay✦)1875 Mission St, Ste 103San Francisco, CA 94103, United Stateslegal@xpay.sh · privacy@xpay.sh
or ask your AI app
Company
About xpayAgency PartnersGitHubDiscordllms.txt
DevelopersDocumentationAPI ReferenceSDKs & LibrariesQuickstart GuideOpenAPI Spec
Stay Updated
Occasional product updates and agent-readiness playbooks from xpay (Agentically Inc.) — typically a couple of emails a month. Double opt-in: we email you a link to confirm before sending anything, and every email has one-click unsubscribe.
Social
  • For Publishers
    • News
    • Finance
    • Dev / Tech
    • Travel
    • View all verticals
  • Agent-Ready Index
    • SaaS Pricing Database
    • Agent-Ready SaaS Index
    • Verified band
    • AI & ML
    • Sales & CRM
  • Products
    • Pricing Widget
    • Monetize MCP Server
    • Paywall
    • Smart Proxy
    • Monetize AI Agents
    • xpay x402 Facilitator
  • Agentic Economy
    • Timeline
    • Resources
    • Manifesto
    • Stack
  • Agentic Commerce
    • Get listed
    • ChatGPT Ads
    • How ChatGPT Ads work
    • ChatGPT Ads · Apparel
    • ChatGPT Ads · Health & Beauty
    • xpay Listings · Amazon + Google
    • Pricing
    • Free audit
    • Shopify
    • WooCommerce
    • Apparel & Accessories
    • Health & Beauty
    • Overview
  • Commerce Index
    • Shopify apps directory
    • Agentic Commerce Ready Index
    • Methodology
    • Pet brands · WooCommerce
    • Pet brands · Shopify
  • Marketplace
    • 🛍️ xpay.deals — agentic storefront for deals
  • Protocols
    • Overview
    • x402
    • MPP
    • UCP
    • ACP
    • AP2
    • TAP
    • A2A
  • Agent Frameworks
    • Overview
    • LangChain
    • CrewAI
    • Claude MCP
    • AutoGPT
    • LangChain vs Mastra
    • LangGraph vs Pydantic AI
  • Company
    • About xpay
    • Blog
    • Docs
    • GitHub
  • Free prompts
    • Ecommerce prompts
    • Email marketing prompts
    • Product description prompts
    • Facebook ad prompts
    • Skincare prompts
    • Supplement prompts
    • Wine prompts
    • Electronics prompts
© 2025 Agentically Inc. All rights reserved.
Privacy PolicyTerms of UseAcceptable Use Policy