Withum Plus Whippany
Located within Hanover Township in Morris County, Withum is one of New Jersey’s top-ranked accounting and advisory firms, providing reliable audit, tax and consulting services to businesses locally and nationwide. With an onsite state-of-the-art cybersecurity facility in our Whippany office and a focus on financial services, technology, healthcare and manufacturing, distribution and logistics, Withum’s CPAs and professionals provide quality accounting services…plus a suite of advisory solutions to help businesses grow and thrive with the personal touch they deserve. That’s the Power in the Plus!
Find Our Whippany Office
200 Jefferson Park,
Suite 400
Whippany, NJ 07981
Phone: 9738989494
Partner in Charge: Zsia Rosmarin
Whippany Industry Specializations
Technology
Learn moreFinancial Services
Learn moreHealthcare
Learn moreManufacturing, Distribution and Logistics
Learn moreAdvisory and Accounting Services
Withum in the Whippany Community and Beyond
The cornerstone of our region is a thriving, connected business community that supports one another and comes together in times of need. Our team members live here, work here and are dedicated community servants. Whether through food drives, sponsorships, volunteering, participating in activities or giving back to the many not-for-profit organizations in the area, our communities remain one of Withum’s most essential core values.
- INSIDE Public Accounting Names Withum on 2022 Best of the Best Accounting Firms List
- Inside Public Accounting Top 100 Firms
- Forbes America’s Best Tax and Accounting Firms
Partner In Charge
Zsia is a partner and Tax Leader of the firm’s Technology and Emerging Growth Services practice with over 20 years of professional experience specializing in taxation including private and publicly held multistate and multinational companies. She has a deep expertise assisting corporate clients with ASC 740 Tax Provisions and Tax Compliance.
Whippany Leadership
Withum Whippany in the News
Massachusetts Life Sciences Companies: Tax Savings Opportunities
The application window for the Massachusetts Life Sciences Center Tax Incentive Program is now open. This program offers lucrative tax savings to eligible companies and the current application requirements include […]
Federal Exclusion of Wildfire Compensation Currently Only for Payments Received Through 2025
On December 12, 2024, President Biden signed the Federal Disaster Tax Relief Act of 2023 (H.R. 5863), a significant piece of legislation aimed at providing much-needed tax relief to individuals […]
Federal and State Filing and Payment Relief for LA Wildfires
The recent wildfires in Los Angeles County have caused significant damage, affecting thousands of residents and businesses. The fires, which began on January 7, 2025, have led to the destruction […]