Business Tax
New York, NY
Located just a block away from Times Square, Withum is one of the largest advisory, tax and accounting firms in New York City.
We are dedicated to helping all types of companies, like real estate, construction, technology, financial services, theater and many more, flourish within the vibrant and diverse business landscape of the Big Apple. We provide a comprehensive range of traditional tax and audit services plus a suite of advisory services tailored to meet the unique needs of NYC businesses and propel them to success.
(212) 751 9100
New York Service Specializations
Assurance and Accounting
Employee Benefits Plan Services
Public Company SEC Compliance & Reporting
International Tax
Tax Credits
Outsourced Accounting Systems and Services (OASyS)
Data Analytics
Digital Workplace Solutions
Global Transfer Pricing
Individual Tax
Private Client Services
New York State and Local Tax Updates
Do you or your organization operate across state lines? Own property in multiple locations? Navigating State and Local Tax (SALT) rules can be tricky—especially in New York, where regulations are constantly evolving. Whether you’re based in Buffalo or doing business throughout the state, staying on top of the latest updates is key. In these New York-focused resources, you’ll find just a dash of the most current insights to help you stay informed as SALT laws shift from region to region.
Beyond the Region
- 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
Partner In Charge
Michael G. Stallone, CPAMike is the partner-in-charge of the firm’s New York office and has over 25 years of professional accounting experience. He specializes in accounting and auditing services for privately-held companies and tax planning for high-net-worth individuals and other entities. Industries of expertise include real estate, service businesses, manufacturing and distribution.
Prior to joining Withum, Mike was a partner with EisnerLubin LLP (joined with Withum in 2011). Mike resides in Monmouth County, NJ.
New York Leadership
Withum in the News
Los Angeles Business Journal Names Two Withum Partners as Top Advisors in the San Fernando Valley
Chris Passmore and Steve Martini have made a lasting impact across the San Fernando Valley through their leadership, business advisory skills and community involvement. Recognized for helping businesses navigate change, create opportunity and drive growth, they have strengthened the region’s business community while contributing to its long-term economic vitality. Chris Passmore is the Partner-in-Charge of Withum’s…
Withum Names Eighteen New Partners
Introducing Our 18 New Partners
Withum Announces 2026 Firmwide Leadership Transitions
This next generation of leaders step forward at a pivotal time for the Firm, bringing the technical expertise and strategic perspective needed to navigate continued growth, rapidly advancing technology and an ever-evolving industry landscape. Grounded in the Withum Way mentality, they will shape what’s ahead while preserving the culture that remains central to how the…
Withum’s Columbia Office Welcomes Greater Baltimore
Withum team members, clients and community leaders, including representatives from Howard County and the Central Maryland Chamber, came together to mark the official “door opening” on the new location. The ribbon-cutting ceremony highlighted the evening, which featured citations presented by community leaders welcoming Withum to the Columbia region and recognizing its strong ties to the…
Nadia Matthie Appointed as Chair of the AICPA’s Employee Benefit Plans Expert Panel
The AICPA’s Employee Benefit Plans Expert Panel was formed to protect the public interest and agree on key plan issues by leveraging the knowledge of leaders in the employee benefit plan industry. Nadia’s deep expertise makes her a valuable asset to help further the panel’s mission as Chair of the group. Nadia has more than…
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