Advanced Tax Automation




Advanced Tax Automation, Inc. brings over 18 years of Indirect Tax implementation experience to your project. We are your experts for SAP, Oracle, NetSuite, or Microsoft tax integrations, having managed and built them all for Thomson Reuters, as well as implemented Vertex and Sovos/Taxware solutions. As Certified Indirect Tax Implementation Professionals, we can assist you with all aspects of the tax automation processes. We have set up and configured Determination, Reporting, Certificate Manager, Data File Integrator, and all of the Integrations in the Thomson Reuters Cloud as well as on-premise for several multi-national clients automating tax for over 50 countries. We have implemented Vertex at a major Food and Beverage company, and transitioned Sovos/Taxware clients to more modern platforms. We bring a clear vision to your project, being a partner in working with your internal and other third party teams, outperforming your expectations. Some client project examples:

  • Media Company – Multiple ONESOURCE clients on SAP, Oracle, and Microsoft
  • Food & Beverage Company – Vertex implementation
  • Oil & Gas Company – Global ONESOURCE/Taxware deployment with SAP and JDE
  • Chemical Company – Word-wide ONESOURCE rollout to over 40 countries in the first phase
  • Multi-national Conglomerate – Global ONESOURCE implementation on Oracle Fusion

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Client Process Circle


Advanced Tax Automation – Tax Integration and Configuration

Do you have a new project in the planning phase? Are you stuck on a mind boggling issue with your tax implementation? Do you have a custom transaction system that needs to be connected to ONESOURCE?  We have the expertise, experience, and knowledge to help you!



Stefan, it has been an amazing experience working with you these past 1.5 years. Your wealth of tax knowledge is simply outstanding, and I personally have learnt a lot from you.

Tax Lead

Over the last 3 years I have enjoyed our time working together taking the S4/Vertex/VIM project from an idea to full implementation through to stabilization of the solution. Your expertise and creativeness to find solutions were critical to the success of this journey.

Purchase/AP Lead

You are the perfect combination of functional and technical skills.

ABAP Governance Lead

I have worked closely with Stefan for 10+ years, first at Sabrix and then at Thomson Reuters. His standards, whether ethical, technical, quality, customer satisfaction, or in any number of other fields are always uncompromisingly high. He sets a high bar for excellence in general, which I have taken inspiration from many times. I wish Stefan all the best in his new endeavors, I am certain he will successful, and I hope we cross paths soon in the tax automation space – there is still a lot yet to be accomplished!

Head of Professional Services at Thomson Reuters

I can’t thank you enough for the amazing guidance and support you have had on the project.

IT Director / Tax

Thank you for all your help, assistance, and guidance over the past three years! I honestly don’t think we could have built the tax solution without you.

Business Lead

It was always great to interact with you, as you’re a step-ahead in all stuff.

SAP Business Process Consultant

I have had the pleasure of working with Stefan for more than a decade, first at Sabrix and then at Thomson Reuters. Stefan was an invaluable resource to myself and my sales team in all things Indirect Tax, where his product contributions and his direct engagement in strategic sales opportunities were instrumental to our success. As the brains behind our overall ERP integration strategy and more specifically the groundbreaking Global Next SAP integration, I wholeheartedly endorse Stefan as a leading expert in the Indirect Tax automation market.

Area Sales Manager, Thomson Reuters