Martin Weigand specialises in the interface between VAT, business processes and SAP technology. His focus is on VAT technology, tax determination, e-invoicing (EN 16931, XRechnung, ZUGFeRD), SAP S/4HANA, and the digitalisation and automation of tax-related processes. He supports national and international companies in the analysis, design and implementation of tax requirements within ERP systems, combining specialist tax knowledge with technical understanding. His key areas of expertise include the optimisation of end-to-end processes in the finance and tax environment (from master data to e-invoicing/reporting), SAP S/4HANA migration support from a VAT perspective, tax data & analytics, tax governance, compliance automation, as well as SAP DRC and third-party tools. He is characterised by a pragmatic, solution-oriented approach and the ability to communicate complex tax and technical issues clearly across departments, IT and management.