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 – 23rd 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
Sameer Uddin Named to Caseware’s 2026 30 Under 30
Advancing Audit Innovation Sameer has played a key role in advancing Withum’s use of audit technology, helping teams adopt new methodologies, improve efficiency and enhance consistency across engagements. A trusted resource for technology implementation, he has been instrumental in the Firm’s adoption of Caseware Cloud and Dynamic Assurance Solutions (DAS) applications. Driving Firmwide DAS Adoption…
Withum Team Members Named as INNOVATE100 Honorees
Leading Industry with a Tech–Forward Vision Matt Walsh, partner and practice leader of Withum’s Industrial and Consumer Products Services Team, was honored in the Finance/Accounting category for helping modernize the Firm’s technology ecosystem. His leadership has supported initiatives that enhance efficiency, streamline workflows and better align technology with evolving client needs, including work with Caseware…
Alan Iosue Named 2026 LA Times Entertainment Business Visionary
As a trusted advisor to entertainment clients, Alan helps organizations navigate the unique opportunities and complexities of an increasingly dynamic, deadline-driven industry. This recognition reflects his commitment to delivering strategic guidance that supports both immediate business needs and long-term success across Southern California’s creative economy. Alan advises production companies, professional athletes, arts organizations and closely…
Withum Ranked a Top 20 Firm Among 2026 IPA 100 Firms
The annual IPA 500 ranks the 500 largest accounting firms in the United States by net revenue using data submitted through the IPA Practice Management Survey. A Growth Strategy Guided by The Withum Way Withum’s rise into the Top 20 reflects purposeful investment. As an independent, owner-operated firm, Withum has the flexibility to make long-term investments that support sustainable growth while maintaining its culture and deepening client relationships. Innovation…
Robin Kim Joins Withum Capital as Managing Director of Investment Banking
Robin brings more than 20 years of investment banking and principal investing experience, advising founder-led, family-owned and privately held companies. Throughout his career, he has advised on transactions exceeding $30 billion in aggregate value, including M&A transactions, leveraged buyouts, recapitalizations, restructurings and debt and equity financings. His experience spans a broad range of industries, providing…
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