About Us

Klardaten builds AI software for German tax advisory. Our platform Klarvos helps tax firms, firm groups, software providers and IT partners make firm data usable for reporting, workflows and automation. DATEV integration is an important foundation for this, because many operational processes in German tax firms are built around DATEV data.

Our Team

Klardaten is led by Sylvain Boulade, Johannes Pfeiffer, and Paweł Janik. We combine software engineering, FinTech and TaxTech experience with a practical understanding of DATEV-adjacent workflows. Our work is guided by what matters in real tax firm and partner environments: clear permissions, maintainability, security, data protection and reliable operation.

Our Story

Klardaten was founded because many tax and accounting processes could benefit from AI support. In practice, however, the required firm data often remains hard to use. We started with DATEV access because DATEV is the operational core system for many tax firms. Today, this integration work is the foundation for Klarvos: an AI platform for answers, workflows and automation in tax advisory.

Proven in daily DATEV operations

“The interface is extremely stable, and the administrative effort for managing our DATEV connections has dropped significantly.”

Stefan Johne

DATEV Interface Manager, milia GmbH

What Sets Us Apart

AI for tax advisory: Klarvos is built for real tax firm workflows, not generic chat demos detached from daily work.
DATEV foundation: We build around the systems, processes and operating context German tax firms already work with.
Security and compliance: Controlled access, secure transmission, hosting in Germany, GDPR and § 203 StGB are part of the product work from the beginning.
Direct implementation support: Customers work with people who understand technical integration and operational processes.

Talk to us about AI in your tax firm

If you want to use firm data for reporting, workflows, AI tools or your own software, we can help you assess the right path.