AnnMarie VonSeggern

AnnMarie VonSeggern has over 10 years of experience providing state and local tax consulting and compliance services. She has worked with clients across a wide range of industries, including real estate, government contracting, investment funds, technology, manufacturing, and professional services, helping them navigate complex multistate filing obligations and reporting requirements. AnnMarie has extensive experience managing large-scale compliance engagements, identifying state tax exposure and opportunities, and implementing process improvements to streamline compliance functions. Her work focuses on high-impact areas such as state-specific apportionment methodologies, pass-through entity (PTET) tax elections, composite return strategies, and K-1 reporting requirements. She also advises clients on nexus determinations, evolving state conformity issues, and the impact of remote workforces on state filing obligations.

Before joining Andersen, AnnMarie worked at both RSM and PwC, specializing in state and local tax compliance. She is a trusted advisor for clients seeking practical, accurate, and efficient solutions to multistate tax challenges, including multistate partnership compliance and reporting, PTET election analysis and implementation, composite return filing strategies, apportionment and state-by-state sourcing review, nexus studies, remote workforce assessments, state residency and domicile planning, voluntary disclosure agreements, and state tax controversy support.