Contact

Get in Touch

Questions, feedback, or partnership inquiries — reach us directly at support@avat.app

For bug reports, feature requests, API access inquiries, or general questions.

Documentation & FAQ

Most questions about VIES errors, Czech validation, export formats, and IBAN checking are answered in the FAQ.

API & Integrations

Interested in programmatic VAT validation for your product or ERP system? Get in touch to discuss API access at support@avat.app.

Response time: We aim to respond within 1–2 business days. For validation issues, please include the VAT number and country code in your message.