With this addon, you can now validate EU VAT numbers directly via VIES, automatically or manually set tax exemption, and log, monitor, and analyze all validations — helping you stay compliant and detect potential fraud.
Hello,
I’ve received a few questions regarding a trial option.
I do not offer trials — the addon is sold exclusively here through the official CS-Cart Marketplace.
If you need any help, encounter an issue, or would like to request an improvement, you can contact me via the official order page after purchasing, or simply ask your question here.
Rate limit increased: 20 → 50 requests/hour 4-second delay removes VIES rate limits (German service works perfectly) Intelligent 5-min caching + auto cleanup = 4× faster responses Extended: VAT validation now available on checkout (customer-requested!) Improved UI, cache indicators & full VIES error classification Compatible with other themes like UniTheme2 Images available for preview
Great news! The add-on has been extended with a new feature to fully align with EU VAT regulations.
The system now correctly implements EU VAT law:
Domestic B2B sales remain taxable
Only cross-border B2B transactions are zero-rated
New Option: Disable Tax Exemption in Your Operating Country
You can now select the country where your business is established.
If a customer or vendor provides a valid VAT number from your selected operating country, automatic tax exemption will NOT be applied. Domestic B2B transactions will remain taxed in accordance with EU VAT rules.
Leaving this field empty will apply tax exemption to all eligible EU countries.
Get the add-on here:
Hello VAT VIES Add-on Owners,
Great news! The add-on has been extended with a new feature to fully align with EU VAT regulations.
New Option: Disable Tax Exemption in Your Operating Country
You can now select the country where your business is established.
If a customer or vendor provides a valid VAT number from your selected operating country, automatic tax exemption will NOT be applied. Domestic B2B transactions will remain taxed in accordance with EU VAT rules.
Leaving this field empty will apply tax exemption to all eligible EU countries.
For logged-in users, the page now reloads automatically after validation. This ensures tax_exempt = Y is applied and tax-free prices are shown instantly — no manual refresh needed.
Guest User Notice
Guests now see a clear warning: tax exemption is only available for registered users.
They must create an account, validate VAT in their profile, and return to checkout.