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Key people at WTAS.
WTAS provided wealth and tax advisory services, building a professional services firm dedicated to comprehensive client solutions. The firm operated with a low-leverage business model, emphasizing direct client relationships and tailored expertise in tax and wealth management for individuals and private clients. Their approach centered on delivering high-quality, personalized service in a landscape facing industry shifts.
The company was founded in 2002 by 23 former partners of Arthur Andersen, including leaders Mark Vorsatz and Joe Toce. This group came together following the dissolution of Arthur Andersen, driven by an insight to rebuild trust and redefine the professional services industry. They aimed to establish a new standard for client focus and service delivery outside the traditional structure.
WTAS initially served a clientele primarily composed of private clients and their associated entities. The company's vision was to consistently prioritize client needs, fostering deep relationships through its integrated wealth and tax advisory offerings. It sought to evolve the professional services model by focusing intently on client success and a reputation for integrity.
Key people at WTAS.
WTAS, or Wealth & Tax Advisory Services, is a U.S.-based independent tax, valuation, and financial advisory firm founded in 2002 by former Arthur Andersen partners, now operating as part of Andersen Group following its rebranding and recent IPO at a $2.6 billion valuation.[1][2][4] The firm provides specialized services in tax advisory, valuations, financial reporting, and consulting to high-net-worth individuals (HNIs), family offices, private equity and hedge funds, multinationals, and businesses, intentionally avoiding audit services.[1][3][5] With over 2,220 personnel including 300+ managing directors across 15+ U.S. offices and ties to Andersen Global's network in 170+ countries, WTAS emphasizes best-in-class service, having grown revenues significantly since inception through expansions in corporate tax, international tax, and valuation expertise.[1][2][5]
WTAS emerged from the ashes of Arthur Andersen's 2002 collapse amid the Enron scandal, when HSBC acquired a portion of its tax practice and launched Wealth & Tax Advisory Services, Inc. (WTAS) on July 9, 2002, led by Mark Vorsatz (now Andersen Group Chairman) alongside Joe Toce and 21 other former partners.[1][2][6] Initially focused on private client services, the firm rapidly expanded: by 2005, revenues grew 27% with doubled client base, adding services like valuations, state/local tax, and real estate; 2006 saw 46% revenue growth and offices in Chicago, Silicon Valley, and Seattle, ranking it 11th largest U.S. tax practice.[2] In 2007, WTAS management bought it out from HSBC; by 2009, it evolved into a full-service tax advisory firm despite economic challenges; rebranded as Andersen Tax in 2014, and Andersen Group went public on December 17, 2025, raising $176 million.[1][2][4][6]
WTAS/Andersen rides the wave of complex tax and valuation needs in a high-growth tech ecosystem, where startups, PE-backed firms, and multinationals require specialized advisory for M&A, financial reporting, ESOPs, and international expansion amid rising AI-driven automation and cross-border deals.[1][3] Timing aligns with post-IPO scale-up: public status fuels AI investments in tax automation, acquisitions of Andersen Global member firms over 30 months, and advisory expansions, capitalizing on market forces like surging valuations (e.g., its own $2.6B IPO) and demand for non-audit expertise post-Enron reforms.[1][6] It influences the ecosystem by supporting tech-adjacent clients in Silicon Valley, Seattle, and beyond, enabling smoother funding rounds, exits, and compliance in industries like aerospace/defense and software.[2][3]
Post-IPO, Andersen (WTAS' evolution) eyes aggressive scaling via AI-enhanced tax infrastructure, member firm acquisitions, and consulting growth to solidify global leadership in non-audit services.[1] Trends like AI automation, rising PE activity, and complex international tax regimes will propel it, potentially evolving from U.S. tax powerhouse to dominant player in tech-enabled advisory amid public market access for talent and deals. This trajectory—from Arthur Andersen survivors to $2.6B public entity—positions it to redefine professional services for tech's wealth creators.[1][6]
