About Joost Willemsen
Joost Willemsen is a Partner at RSM. His team provides end-to-end, technology-driven VAT compliance outsourcing services that help clients manage their UK or global VAT footprint.
After starting his career in the Netherlands in KPMG’s international VAT team, Joost moved to the UK in 2018. He was tasked with driving KPMG’s tax and VAT data analytics and reporting services, and supporting prestigious clients including HSBC, Blackrock and AT&T. Joost joined RSM in 2021 to lead the global VAT compliance team and hasn’t looked back since.
Before joining RSM, Joost has worked in two Big 4 accounting firms as a specialist on the intersection between VAT advisory and indirect tax technology. He was responsible for leading indirect tax analytics and compliance engagements for a number of high-profile clients.
When asked what motivates him, Joost said:
"What drives me most is helping clients to unlock their full potential, by freeing up time and generating valuable insights from their data."
In his spare time, Joost enjoys hiking with his wife and dogs.
RSM timeline:
- 2025: promoted to Partner
- 2021: joined RSM as Head of the Global VAT Compliance and Reporting team