Whippany, NJ
Withum Plus Whippany
Located in the heart of Morris County, minutes from Morristown Business District, 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. Withum’s Whippany office has an industry focus on financial services, technology, healthcare, manufacturing, distribution & logistics and private equity. With an onsite state-of-the-art cybersecurity facility, 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: (973) 898 9494
Partner in Charge: Zsia Rosmarin
Whippany Accounting and Advisory Service Specializations
Tax
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Employee Benefit Plan Audits
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Transaction Advisory
Learn moreCybersecurity Consulting Services
Learn moreNew Jersey State and Local Tax Updates
Do you or your organization operate in multiple states? Do you own property in a variety of states? New Jersey State and Local Tax (SALT) laws are always changing and understanding the nuances of the states that you own or operate in is challenging. In these New Jersey resources, you’ll find just a dash of the most up-to-date details on rules and regulations as state and local tax changes happen by state!
Industries We Focus on in New Jersey
Withum in the Whippany Community
The cornerstone of our region is a thriving, connected business community that supports one another and comes together in times of need. Withum’s Whippany 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.
Beyond the Whippany Office
- Inside Public Accounting Top 100 Firms - 22nd Largest Nationally
- Accounting Today Top 100 Firms - 22nd Largest Nationally
- Great Place to Work® – Fortune Best Workplaces for Parents and Women
- Vault Top 25 Accounting Firm
Withum Whippany in the News
Great Place to Work® Names Withum Among Best Workplaces for Women
Withum is proud to share that Great Place to Work® has named the Firm as one of this year’s Fortune Best Workplaces for Women. Ranking in the top 100 for […]
Michael George Joins Withum’s Healthcare Services Team
Withum is excited to share that Michael George, Partner, has joined the Healthcare Services Team as a strategic leader. Formerly an audit partner at a Big Four firm, Michael has […]
Withum Announces Firmwide Leadership Transitions
Exciting things are happening at Withum! As of July 1, a new class of leaders will take their places across the Firm’s industry, regional, and internal teams. These individuals were […]
Withum Hosts Local Vocational Cyber Students
Withum Welcomes Morris County Vocational School District Cybersecurity & Information Protection Program Students to Top-of-the-Line Cyberspace. On Friday, January 13, Withum hosted students from Morris County Vocational School District to […]
Withum Announces New Whippany Office Location
Withum Announces New Whippany Office Location Strength in New Whippany, NJ Office Design Extends WithumSmith+Brown’s Core Beliefs Sustainable build utilizes 42+% of recycled content and yields 26,000+ pounds of construction […]
Withum Named on USA TODAY and Statista List of Most Recommended Tax and Accounting Firms
Withum is excited to share that the Firm has made USA TODAY and Statista’s list of America’s Most Recommended Tax and Accounting Firms for 2025. For the second year in […]
Withum’s 2025 State of the Firm Echoes Power in Connection
Withum held its annual State of the Firm event on Tuesday, January 14, at the New Jersey Performing Arts Center (NJPAC), Newark, NJ. Nearly 1,500 team members gathered with another […]
Withum Team Members Support Wreaths Across America for Fallen Veterans
Withum’sVeterans Team Member Resource Group (TMRG) andNot-for-Profit and Education Services Team proudly sponsored a total of 2,792 wreaths, in conjunction with team members and friends and family of the Firm […]
Withum Wrap-Up: Community Impact in 2024
As we near the end of the year, we’re thrilled to present a rundown of Withum’s community impact initiatives for 2024. Through large-scale projects, localized volunteer efforts or personal acts […]
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.
