kallman Blog
Our blog articles are all about practical solutions for mapping and automating VAT processes in the SAP system. We offer in-depth insights and helpful information on topics such as tax determination, compliant reporting and data analysis in SAP ERP and SAP S/4HANA.
Tax Determination in SAP SD
What you should know when switching to SAP S/4HANA

Anyone who sets up tax determination in SAP SD receives an initial proposal for automated tax code determination in the Sales and Distribution module with the configuration delivered by the manufacturer. In this article, tax determination expert and kallman partner Lars Bohn sheds light on which configuration proposals SAP S/4HANA provides and how these differ from previous system generations.

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Lars Bohn
Sep 30, 2025
Value Added Tax in SAP
How the tax department can gain confidence in the SAP system

In many companies, the SAP system remains a black box for the tax department, with its automated processes and data provenance remaining obscured. In this article, Lars Bohn, a specialist in VAT IT and partner at kallman, sheds light on how the gap between the functional department and IT creates risky uncertainties, and identifies the levers tax professionals can use to regain full control over their data flows.

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Lars Bohn
Feb 12, 2026