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At Wiss, we believe there’s more to accounting than just balancing the books. For over 50 years, we've partnered with privately held, investor-backed companies and family-run businesses to help them achieve and sustain financial success. We’re proud to be recognized among the IPA Top 100 Firms, USA Today’s Most Recommended Firms, and Accounting Today’s Fastest Growing Firms—a testament to our commitment to excellence and client success. Our mission is simple yet powerful: to empower businesses and families by building practical frameworks around accounting, tax strategies, family office services, and wealth management. From startups to established enterprises, we provide support through every stage of a lifecycle—helping you overcome obstacles and unlock growth opportunities. With a focus on the middle market, we offer everything from advisory and assurance services to advanced accounting solutions powered by AI and data analytics. This future-forward approach ensures that our clients benefit from smarter and faster financial insights. But we’re more than just numbers. At Wiss, we foster lasting relationships by offering white-glove, service-focused solutions tailored to your unique needs. When you choose Wiss, you’ll find a team that’s not only invested in your financial outcomes but in the stories that drive your success. Our vibrant culture reflects our commitment to our clients, employees, and community. Through social impact initiatives, we work to create lasting change within local neighborhoods while supporting the growth and development of our team. When you’re ready to elevate your business, we’re here to help. Together, we can chart a path toward a sustainable, thriving financial future. Discover the Wiss difference—connect with us today! 🎙️ This Week In Accounting AI — our podcast on the future of finance and AI: https://open.spotify.com/show/4ijxY8O6AUtw1StTT0aYPH

Website http://www.wiss.com
Revenue $39.9 million
Funding $2 million
Employees 553 (346 on RocketReach)
Founded 1969
Address 352 Park Avenue South 9th Floor, New York, New York 10010, US
Phone (973) 994-9400
Fax (908) 782-2997
Technologies
Industry Accounting, Accounting & Accounting Services, Audit, Accounting & Tax, Business Services, Financial Services, STEM, Professional Services, Construction, Business Valuations, Public Sector, Economic Incentives, Employee Benefit Plans, Technology Advisory, Litigation Support, Mergers & Acquisitions, Outsourced Accounting, Food, Healthcare, Construction & Real Estate
Web Rank 3 Million
Keywords Financial Statement Preparation, Accounting, Tax, Financial Planning, Tax Optimization, Bookkeeping, Financial Services, Accounting Services, Tax Services, Financial Advisory, Business Accounting, Corporate Tax, Financial Consulting, Wealth Management, Estate Planning, Auditing, Forensic Accounting, Retirement Planning, Irs Compliance, Payroll
Competitors Deloitte, PwC, Grant Thornton LLP (US), Plante Moran, EisnerAmper, BDO USA, LLP, Crowe Indonesia, CohnReznick LLP, KPMG Deutschland +29 more (view full list)
SIC SIC Code 87 Companies, SIC Code 872 Companies
NAICS NAICS Code 5412 Companies, NAICS Code 54121 Companies, NAICS Code 541 Companies, NAICS Code 54 Companies

Wiss Questions

The Wiss annual revenue was $39.9 million in 2026.

James Duffy is the President, Partner of Wiss.

346 people are employed at Wiss.

Wiss is based in New York, New York.

The NAICS codes for Wiss are [5412, 54121, 541, 54].

The SIC codes for Wiss are [87, 872].

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