about us and our work
Our approach – VAT consulting out of the engine room of your company
Our guiding principle “Advice from the engine room of your company and not from the ivory tower of a consultant” sums up what we stand for: practical in-house solutions and customized approaches.
We speak your language – and, more importantly, the language of your frontline teams. We understand how dynamic and creative your sales force can be, and how challenging it can be to align their activities with VAT regulations.
We also recognize your frustration when consultants simply reiterate what you already know – without providing clear, practical guidance on how to implement it. That’s where we step in.
About interVATim
interVATim combines external legal advice in VAT law with interim tax management in the internal tax department. As experienced in-house tax specialists, we not only advise you on what you should do, but we also work with you to implement it.
PARTNER
Viktoria Fleiss
Our partner and lawyer, Viktoria Fleiss, has been advising national and international clients on VAT, compliance & reporting, and international tax law since 2001.
With extensive experience on both sides of the table – having worked for a Big 4 firm, as an in-house tax specialist, and as Head of Tax – she understands the challenges of tax departments from multiple perspectives. Since 2022, Viktoria has also been active as an interim tax manager, combining deep technical expertise with the hands-on implementation skills of an interim professional.
Her in-house experience gives her a comprehensive understanding of internal processes and tax department workflows. She has successfully led ERP system transitions, including SAP S/4HANA implementations, and knows first-hand how tax functions operate – whether in family businesses, mid-sized companies, or large corporations.
With her strong international background, Viktoria has also built a broad network of international VAT experts, making her a valuable resource for businesses navigating complex cross-border tax issues.
“Professional expertise and hands-on experience are the foundation of a successful interim tax manager. But the real differentiator? The ability to quickly integrate—not just into the project, but into the existing team. I don’t observe from the sidelines; I work on VAT from the engine room, where the real action happens.”
Annkatrin
Nußer
VAT domestic/abroad, SAP key user
Claudia
Koller
VAT domestic/abroad, SAP key user
Bianca
Gallian
Project Management Office, Client Financial Management
Alexandra
Herbold
Income taxes, partnerships
Holger
Plotz
Partner, Lawyer
My Experience – Your Advantage. Professional experience and specialist knowledge are the basis for an interim tax manager. The salt in the soup is the ability to integrate quickly into the specialist project and, above all, into the existing team. I work on VAT in the engine room. I don’t observe from the sidelines; I work on VAT from the engine room, where the real action happens.
Viktoria Fleiss
Get in touch with us now and let us tackle your VAT challenges together!
Are you looking for new challenges in a hands-on environment?
We offer you the opportunity to contribute your expertise in tax law, especially with regards to VAT, in an agile and highly specialized team.
