VAT & Tax Validation
Free tierValidate tax IDs and calculate rates for every EU member state.
About this API
Real-time VIES-backed VAT number validation with company name and address returns, plus current standard and reduced VAT rates, digital-goods rules, and price calculation endpoints for compliant invoicing.
Common use cases
Quickstart
Every Zephiel API uses the same base URL, the same key header, and the same error envelope.
curl -X GET "https://zephiel.com/api/v1/vat-validation/validate" \
-H "X-Zephiel-Key: $ZEPHIEL_API_KEY" \
-H "Accept: application/json"Example response
{
"vat_number": "IE6388047V",
"valid": true,
"company_name": "GOOGLE IRELAND LIMITED",
"country_code": "IE",
"standard_rate": 23
}/v1/vat-validation/validateValidate a VAT number against VIES/v1/vat-validation/ratesCurrent rates by country/v1/vat-validation/priceCalculate VAT-inclusive pricingAll endpoints return JSON and accept the X-Zephiel-Key header. Rate limits are enforced per plan and reported in X-RateLimit-Remaining.
Plans can be changed or cancelled at any time. Overage is charged per 1,000 requests rather than hard-blocking your traffic.
Free
100 requests/mo
5 req/min
Free
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — not included
- Email support — not included
- Usage analytics and alerts — not included
- 99.9% uptime SLA — not included
- Webhooks — not included
- Priority support — not included
- Custom rate limits — not included
- 99.99% uptime SLA — not included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Starter
10,000 requests/mo
60 req/min
$13/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — not included
- Priority support — not included
- Custom rate limits — not included
- 99.99% uptime SLA — not included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Most popular
Pro
250,000 requests/mo
600 req/min
$52/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — included
- Priority support — included
- Custom rate limits — included
- 99.99% uptime SLA — included
- Dedicated success manager — not included
- SSO / SAML — not included
- Custom SLA, DPA, and BAA — not included
- Private deployment option — not included
- Volume pricing — not included
Enterprise
Unlimited requests
Custom
$182/month
- JSON output format — included
- HTTPS encryption — included
- API key authentication — included
- Standard endpoints — included
- Community support — included
- CSV output format — included
- Email support — included
- Usage analytics and alerts — included
- 99.9% uptime SLA — included
- Webhooks — included
- Priority support — included
- Custom rate limits — included
- 99.99% uptime SLA — included
- Dedicated success manager — included
- SSO / SAML — included
- Custom SLA, DPA, and BAA — included
- Private deployment option — included
- Volume pricing — included
4.6
12 reviews
Lin Zhao
Backend Developer
Errors are actually readable
When something goes wrong VAT & Tax Validation says what and why, with a code I can branch on. I have integrated invoicing services that return 200 with an error buried in the body, so this is a relief.
Fatima Bello
Operations Director
Held up under real load
We push VAT & Tax Validation hard during peak and latency has stayed flat. No throttling surprises, no silent degradation — the numbers on the listing matched what we measured.
Pieter de Vries
Staff Engineer
Good coverage for vat
We checked VAT & Tax Validation against our own vat reference data before committing. Coverage was better than the incumbent we were paying four times as much for.
Olamide Fashola
Technical Lead
Documentation matched reality
Every sample in the VAT & Tax Validation docs ran unmodified. That sounds like a low bar until you have integrated something where it is not.
Isabella Ferreira
Software Engineer
Now handles invoice compliance too
We adopted VAT & Tax Validation for b2b checkout and ended up using it for invoice compliance as well. Same key, no new contract, no second integration.
Arjun Patel
Senior Engineer
Support answered properly
Asked Zephiel Labs about an edge case in VAT & Tax Validation and got an explanation from someone who had clearly read the code, not a link to the FAQ.
Sarah Whitfield
Founder
Quietly reliable
VAT & Tax Validation has not surprised us once in eight months of production traffic. That is the highest compliment I can pay a dependency.
Ngozi Eze
Systems Analyst
One key made the difference
Adding VAT & Tax Validation took ten minutes because the credential already existed. The vendor onboarding we skipped would have taken longer than the integration.
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