About Us
We make tax processes more efficient. Klardaten provides powerful solutions for integrating DATEV into digital workflows, as well as for automated, legally compliant data processing. Our goal is to help TaxTechs and companies in the tax industry automate processes, reduce errors, and make workflows more stable and efficient overall.

Our Team
Klardaten is driven by Sylvain Boulade, Johannes Pfeiffer, and Paweł Janik – three experts with decades of experience in software development, FinTech, and TaxTech. With our international expertise and deep understanding of digital transformation, we help our partners advance their automation. Our team thrives on pragmatism, technical excellence, and a passion for making complex processes simple and efficient.
We switched from Riecken to Klardaten and couldn’t be more satisfied.
Not only are the latency times comparable to an open-port direct connection, but thanks to the extended monitoring and remote maintenance features and the stability of the interface, we have also reduced both technical administration efforts and downtimes by more than 90%.
The Klardaten team has always provided active and professional support to us and our connected clients when problems arose.
Anyone not using Klardaten is just making life harder for themselves.
Our Story
Klardaten was founded by three experienced software developers from the tax industry who recognized a gap in the market: tax and accounting processes need modern, flexible, and digital automation. From the very beginning, our goal was to develop a straightforward, secure, and powerful solution that meets the industry's specific requirements. Today, we help TaxTechs and tax consultants optimize and seamlessly integrate their processes.
What Sets Us Apart
- Efficiency in tax processes: We develop practical, high-performance solutions for digital workflows.
- Reliability and scalability: Our systems are stable, high-performing, and grow with demand.
- High security & compliance: Legally compliant data processing is our standard.
- Direct support and fast response times: No unnecessary overhead—just quick and competent assistance when needed.

