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Andersen Tax
Andersen Tax
Andersen Tax
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Andersen Tax LLC is a tax firm headquartered in San Francisco, California, United States. It provides tax, valuation, financial advisory and consulting services to individuals and corporate clients. As of 2015, Andersen Global has a presence in 179 countries.[2]

Key Information

History

[edit]

Andersen Tax was established as Wealth and Tax Advisory Services in July 2002. In the wake of Arthur Andersen's demise, several former partners of Arthur Andersen formed Wealth and Tax Advisory Services USA Inc. (WTAS), a subsidiary of HSBC USA, Inc, to handle a portion of Arthur Andersen's tax practice.[citation needed]

On December 31, 2007, HSBC USA Inc. sold Wealth & Tax Advisory Services USA Inc. (‘WTAS’) to participating WTAS managing directors in a management buyout (MBO) resulting in WTAS LLC. In consideration for the sale, HSBC would receive US$5 million in cash and deferred notes with a principal amount totaling US$60.85 million.[3]

In July 2013, WTAS LLC established WTAS Global as an international association of independent professional services firms.[4]

By November, WTAS Global had acquired the Paris-based law firm STC Partners.[5]

On September 2, 2014, WTAS LLC changed its name to Andersen Tax LLC and WTAS Global changed its name to Andersen Global.[6]

In June 2015 Andersen Global launched in Latin America with the addition of Mexican firms, NOVINT, Capin, Ibañez & Asociados and Montes, Hernández, López y Del Castillo.[7] Mexico was followed shortly by an office in Guatemala through the addition of Trust Consulting in Guatemala City.[8]

By the end of 2015 Andersen Global had added a new presence in Spain and Brazil. Andersen Global now has 45 international locations with over 1,200 professionals worldwide.[9][10] Through fall of 2016, they added services in Guatemala[11] and collaborations with mgpartners, a leading tax firm in Ireland[12]

On March 1, 2017, Andersen Tax & Legal made its debut in Spain as the firm, formerly named Global Abogados, is the first in Europe to adopt the Andersen name.[13] Since, Andersen Global has added member firms in Italy,[14] Portugal,[15] and Germany.[16]

The year 2018 has brought the debut of the Andersen name in Ireland, Egypt, France, Ecuador and Kenya along with notable expansion in Spain, Portugal, Mexico, UK, Luxembourg, Canada and Brazil. The international association has also added a presence in Argentina, Kuwait, Mozambique, Angola, Hungary, Jordan, and India.[17]

On September 3, 2019, Andersen Tax rebranded to Andersen.[18]

In October 2019, Andersen Global announces Nangia Andersen India as its Indian member firm.[19] Nangia Andersen India is global network's 1st Indian Firm of Andersen Global.[20]

In 2022, in interview with Hindu Business Line, Mark L Vorsatz, Global Chairman, Andersen Global along with Rakesh Nangia, chairman, Nangia Andersen India expresses high optimism for the Indian economy [21]

Mark L Vorsatz, Global Chairman, Andersen Global and Rakesh Nangia, chairman, Nangia Andersen India share their future expansion plans in an exclusive interview with Mint[22]

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia

Andersen Tax

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from Grokipedia
Andersen is an independent firm specializing in tax, valuation, financial advisory, and related consulting services, primarily serving individuals, families, businesses, and funds. Founded in 2002 as Advisory Services, Inc. (WTAS) by former partners of the collapsed accounting firm, it initially focused on client-centric tax solutions and later expanded its scope. The firm underwent a from in 2007, acquired the Andersen brand in 2014 (leading to its renaming as Andersen Tax), and rebranded fully to Andersen in 2019 to reflect broader offerings in valuation, legal, and consulting. As a founding member of Andersen Global, the U.S.-based Andersen operates with over 2,200 professionals across 25 cities domestically, while the global network encompasses more than 20,000 professionals and over 2,000 partners in over 425 locations spanning more than 140 countries on six continents. This structure enables seamless, cross-border services, including corporate and international compliance, , indirect taxes (such as VAT), business credits and incentives, advisory, and data protection, litigation and controversy management, and global mobility support. The firm's advisors draw from backgrounds in major international firms, practices, the IRS, and state taxing authorities, emphasizing customized planning, compliance, and advisory tailored to diverse industries, entity types, ownership structures, and nationalities. Since its inception, Andersen has grown significantly from 14 offices in 2012 to a worldwide presence of over 425 locations as of 2025, evolving from a post-Enron specialist into one of the largest independent practices globally. Key expansions include integrating and AI-driven consulting in recent years, solidifying its role in complex, high-value financial advisory for high-net-worth clients and multinational entities. In 2025, Andersen launched its global consulting practice in , spanning 66 countries and integrating AI and digital strategies with and legal services, followed by the Transformation and Innovation Practice in October to further enhance digital capabilities.

History

Origins from Arthur Andersen

Arthur Andersen LLP was established in 1913 in by , then a 28-year-old , and his partner Clarence DeLany, initially operating as Andersen, DeLany & Co. The firm quickly positioned itself as a pioneer in standards and auditing, advocating for uniform methods and ethical practices that influenced the profession's development. Over the decades, expanded into one of the world's leading accounting firms, achieving Big Five status by the late with a global presence in 84 countries. By 2000, it employed over 85,000 professionals and generated annual revenues exceeding $9 billion, driven by its reputation for rigorous auditing and consulting services. The firm was renowned for its core principles of integrity, objectivity, and conservative financial reporting, often prioritizing ethical standards over aggressive client demands, as exemplified by its early insistence on longer periods for major assets like IBM's mainframe computers. The firm's trajectory shifted dramatically with the in 2001, where served as Enron's auditor and was accused of enabling entities that concealed billions in debt, contributing to Enron's filing in December of that year. In June 2002, a federal jury convicted of obstruction of justice for instructing employees to shred Enron-related documents, resulting in a $500,000 fine and the revocation of its licenses to conduct public audits across multiple jurisdictions. These events precipitated the firm's rapid dissolution, as clients fled and regulatory bodies barred it from practice, effectively ending its 89-year history. Arthur Andersen officially ceased operations on August 31, 2002, leaving thousands of employees jobless and scattering its partnerships. In response, numerous former partners, drawing on the firm's enduring legacy of quality and trust, pursued new initiatives focused exclusively on tax advisory services to avoid the conflicts inherent in auditing. This shift toward tax expertise among ex-Andersen alumni provided the foundation for subsequent ventures aimed at reclaiming the brand's principled heritage without repeating historical vulnerabilities.

Founding as WTAS and early development

Wealth and Tax Advisory Services (WTAS) was established on July 9, 2002, in , California, by 23 former partners of the collapsed firm, including Mark Vorsatz as CEO and Joe Toce. The founders named the new entity WTAS to highlight its specialization in and tax advisory services, deliberately excluding auditing to distance itself from the regulatory fallout surrounding 's dissolution. This boutique firm began operations with a low-leverage model, where managing directors directly engaged clients to deliver tailored solutions in tax and financial planning. From its inception, WTAS targeted high-net-worth individuals and businesses, drawing on the tax expertise of its alumni to navigate the heightened post-Enron scrutiny on corporate compliance and reporting. Initial offices were established in , , , Washington, D.C., and West Palm Beach, allowing the firm to serve a diverse client base focused on private wealth preservation and complex tax strategies without the conflicts associated with audit services. On the same day as its founding, acquired a significant portion of the new entity's operations, integrating WTAS as a and providing expanded resources for growth amid the uncertain economic environment. Under HSBC's ownership, WTAS experienced steady expansion, with its client base increasing by 20% in 2003 and doubling by 2005, alongside the opening of additional offices in and . By 2006, the firm had grown to 11 offices nationwide. In December 2007, a management buyout led by participating managing directors returned WTAS to independent partner control, enabling greater agility in serving corporate and private clients. This transition marked a pivotal shift toward self-directed development, culminating in a key milestone by 2010 when WTAS had quadrupled its client base, increased its managing directors to 86, and solidified its reputation as a full-service tax advisory firm specializing in complex tax structuring while steering clear of its predecessor's auditing controversies.

Rebranding and expansion

On September 2, 2014, Advisory Services (WTAS) announced its acquisition of the rights to the iconic Andersen brand name, rebranding itself as Andersen Tax LLC to revive the legacy of the original firm while focusing on tax and advisory services. This move positioned the firm to leverage the historical reputation of Andersen, established in 1913, amid a landscape where the name had faded following the 2002 . At the time, the U.S.-based firm operated with approximately 300 professionals across eight offices, emphasizing independence from audit services to avoid past associations. In tandem with the rebranding, Andersen Tax LLC became the founding member of Andersen Global, established in as a Swiss verein to facilitate international collaboration among independent member and collaborating firms without shared liability. This structure enabled coordinated global service delivery in tax, legal, and consulting, beginning with a modest network that quickly expanded from initial European and Latin American footholds to support cross-border client needs. Andersen Global pursued aggressive geographic expansion starting in 2015, with key milestones including the debut of member firms in , such as the adoption of the Andersen name by a Spanish firm on March 1, 2017, marking the network's first European presence. Further growth in came in 2019 through a membership agreement with Nangia Advisors LLP (now Nangia Andersen LLP), establishing 11 locations in for tax and advisory services. In , the network added a collaborating firm in Brazil in April 2019, enhancing capabilities in for tax and accounting. By late 2019, these efforts had grown Andersen Global to a presence in over 144 locations worldwide with more than 4,500 professionals. The expansion drove significant revenue growth, with Andersen surpassing $500 million in 2018, fueled by strategic additions such as the hiring of key partners in December 2018 to build out the London tax practice and collaborations that strengthened the European footprint. This milestone reflected the firm's scaling from a U.S.-centric to a global entity serving multinational clients. In September 2019, Andersen Tax LLC shifted to a full rebrand as simply "Andersen," dropping the "Tax" suffix to broaden its emphasis on integrated global tax, consulting, and advisory services while maintaining its core focus. This unified branding aligned with Andersen Global's vision of a single international identity, signaling maturity and diversification beyond tax-only origins. Following the rebrand, Andersen continued its expansion, reaching over 600 locations worldwide by 2025. In February 2025, the firm launched a global consulting practice under the Andersen brand. Additionally, in September 2025, Andersen filed for an (IPO) in the United States.

Services

Tax compliance and planning

Andersen provides comprehensive compliance services for domestic and international operations, focusing on accurate preparation and filing of returns to ensure regulatory adherence for corporations and other entities. These services include U.S. federal compliance, such as preparation of Form 1120 for C corporations, along with calculations for book-to-tax differences and adjustments to . State and local (SALT) compliance involves analysis to identify potential savings opportunities and manage risks associated with audits and penalties. For entities like S corporations, partnerships, consolidated groups, and LLCs, the firm handles return preparation and review, including documentation for uncertain tax positions and support for estimated tax payments to avoid penalties. In the international arena, Andersen assists with U.S. international compliance, encompassing federal and state filings as well as foreign reporting requirements, such as those under the (FATCA). documentation is a key component, aligning intercompany transactions with guidelines to mitigate base erosion risks. The firm supports compliance and foreign planning to optimize multinational positions. Tax planning strategies at Andersen emphasize optimization of deductions and credits within legal frameworks, particularly following the 2017 (TCJA). Services include structuring for , joint ventures, and financings, with analysis of tax attributes for cross-border transactions. The firm aids in strategies and application of (ASC) 740-10 (formerly APB 23) for indefinitely reinvested foreign earnings to address post-TCJA implications. Additionally, Andersen identifies and documents eligibility for Research and Development (R&D) tax credits to reduce for qualifying activities. Cost segregation studies are utilized to accelerate deductions on , enhancing for clients. The firm's expertise extends to industry-specific applications, tailoring compliance and planning to sector needs. In , services cover reviews, repair versus determinations, and pursuit of incentives to support strategies. For the sector, planning incorporates (IP) cost-sharing arrangements and R&D credit claims to facilitate innovation-driven growth. In , compliance and consulting focus on incentives for renewables and efficiency projects, including state and federal credit opportunities. Andersen addresses global tax reforms, such as the OECD's (BEPS) framework, through services on Pillar One and Pillar Two initiatives to ensure multinational clients meet minimum requirements and enhance transparency. These compliance and efforts integrate briefly with broader financial advisory to provide holistic support for client objectives.

Financial advisory and valuation

Andersen offers comprehensive services, employing income, market, and asset-based approaches to assess for clients ranging from private es to high-net-worth individuals. The income approach focuses on analysis and stock compensation valuations, projecting future earnings to estimate . Market-based methods involve opinions of portfolio investments, benchmarking against comparable transactions or entities. Asset-based techniques, such as allocations and asset impairment assessments, evaluate the underlying tangible and intangible components of a . In financial advisory for transactions, the firm provides support through in-depth business reviews and transaction analysis, ensuring clients receive thorough evaluations of potential deals. Andersen also delivers fairness opinions via assessments to guide mergers, acquisitions, and other corporate events, helping stakeholders confirm equitable pricing. These services emphasize tax-efficient structuring, such as in private equity exits where valuations incorporate assessments and recent third-party financings to optimize outcomes. Specialized valuation expertise includes appraisals of intangible assets, such as patents, trademarks, copyrights, trade secrets, proprietary technology, in-process , customer lists, and contract rights, often in support of under IRC Section 482 for related-party transactions. Real estate appraisals cover assessments and lease analyses, while services address litigation and dispute support, providing expert testimony and damage quantifications. The firm also handles machinery and valuations, winery and assessments, and cost segregation studies for planning. All valuations adhere to rigorous compliance standards, including the Uniform Standards of Professional Appraisal Practice (USPAP) to ensure independence and ethical conduct, as outlined in client engagement agreements. Services align with IRS guidelines for tax reporting, estate and gift tax appraisals, charitable contributions, and domestic/international tax planning, enabling defensible positions in audits or regulatory reviews. These practices withstand third-party scrutiny, supporting and buy-sell agreements as well as broader financial reporting needs.

Consulting and wealth management

Andersen provides comprehensive consulting services that integrate tax expertise with to drive for enterprises. Through its Andersen Consulting practice, the firm offers solutions focused on process redesign and , enabling clients to streamline operations and reduce costs. [Risk management](/page/Risk management) services address cybersecurity threats across product and ecosystems, helping businesses mitigate potential disruptions while considering associated implications. Additionally, Andersen Consulting delivers AI-centric innovations for and quality, optimizing and compliance in global operations. In , Andersen specializes in services tailored for high-net-worth individuals and families, including support that encompasses governance, investment oversight, and multi-generational wealth preservation. Estate planning strategies are customized to minimize transfer taxes and ensure seamless asset succession, often incorporating valuation inputs to assess holdings accurately. advisory includes the design of charitable giving vehicles, such as charitable remainder trusts, which provide income streams for donors while offering tax deductions and supporting long-term giving goals. Trust formation services further enable clients to protect assets and facilitate philanthropy aligned with family values. The firm's target clients are ultra-high-net-worth individuals and , for whom Andersen develops customized portfolios that balance efficiency with growth objectives, often integrating ESG considerations for sustainable wealth building. Recent innovations underscore Andersen's forward-looking approach in consulting. In February 2025, the firm launched its global consulting practice across , emphasizing strategy, , and AI-driven solutions to enhance enterprise resilience. This expansion was bolstered in October 2025 by a collaboration agreement with Vivaldi Group, a global strategy consultancy, to provide in brand strategy and . Complementing these efforts, Andersen partnered with the School of Law in October 2025 to launch the Generative AI Program, equipping professionals with AI tools for advanced research and predictive compliance analysis. In November 2025, Andersen Consulting enhanced its offerings through a partnership with Criticalcase, providing customized , monitoring, and system solutions.

Global Presence

U.S. operations and offices

Andersen Tax is headquartered in , , where it coordinates its domestic operations. The firm maintains 26 offices across major U.S. cities, including , New York, , , and a newly opened location in to expand its Southeast presence. These offices enable localized service delivery while leveraging the firm's national infrastructure for tax and consulting needs. As of 2025, Andersen Tax employs more than 2,200 professionals throughout the , with expertise concentrated in tax compliance, , valuation, financial advisory, and related consulting services. The workforce supports a broad client base, focusing on diverse domestic industries such as , , healthcare, manufacturing, , and . This operational strategy emphasizes tailored solutions for businesses of varying sizes and structures, addressing U.S.-specific challenges like and economic sector dynamics. In November 2025, the firm strengthened its private client services by hiring Yingsi (Fanny) She as a managing director, bringing her 17 years of experience in multijurisdictional planning for high-net-worth individuals and family enterprises. Andersen Tax reported a 12.4% increase in the first half of 2025, reaching $384 million, which supports key milestones toward a potential . U.S.-centric initiatives include guiding clients through 2025 updates, particularly provisions in the One Big Beautiful Bill Act enacted on July 4, 2025, such as permanent lower individual rates and enhanced deductions benefiting sectors like and working Americans.

International network and collaborations

Andersen Global operates as a Swiss-based verein, an association of legally separate and independent member firms and collaborating entities that share the Andersen brand to deliver tax, legal, and consulting services worldwide. As of June 2025, the organization encompasses over 44,000 professionals and 2,900 partners across 182 countries, enabling a coordinated global presence while maintaining firm autonomy. This structure positions the U.S.-based Andersen Tax LLC as the founding and core hub, from which international expansion radiates. The network has seen significant growth through strategic additions of member firms and collaborations, with 65 new entities joining in 2024 alone to enhance service capabilities in emerging markets. Notable recent expansions in 2024-2025 include partnerships with MMCA & Associates in in March 2025 for tax and advisory services, Edge Research in in March 2025 for valuation and research expertise, and the addition of Azurian Consulting in June 2025 as a to bolster offerings. Earlier examples of regional debuts, such as the 2017 entry into via Global Abogados adopting the Andersen Tax & Legal brand, illustrate the verein's methodical buildup in . In and , key developments encompass the collaboration with Valora in the in December 2024 to advance valuation services for businesses and high-net-worth individuals. Under the collaboration model, independent firms leverage the Andersen name for compliance, , and consulting while retaining operational independence, fostering seamless cross-border service delivery without direct affiliation. This approach supports targeted joint ventures, such as the Azurian integration, to address specialized needs like digital advisory in dynamic markets. Looking ahead, Andersen Global aims to scale its professional base to by 2029 through continued strategic alliances, emphasizing innovation in AI-driven solutions and market intelligence to drive .

Organization and Leadership

Corporate structure

Andersen Tax operates as a (LLC) under the broader umbrella of Andersen Group Inc., a corporation formed in April 2025 that serves as the with indirect ownership of Andersen Tax Holdings LLC and Andersen Tax LLC through AT Umbrella LLC. This structure utilizes a UP-C framework, allowing for partnership-like treatment while enabling public equity issuance. As the founding member firm of Andersen Global, a Swiss verein comprising over 300 independent member firms and more than 44,000 professionals across 170 countries, Andersen Tax coordinates global services without unified liability among members, facilitating referrals and shared resources while maintaining operational independence. Ownership is partner-led, primarily held by managing directors through Andersen Aggregator LLC, which controls Class X Umbrella Units and Class B with enhanced voting rights (10 votes per share). This model traces back to a 2007 from , establishing independence for the firm then known as WTAS, which rebranded to Andersen Tax in 2014. In September 2025, Andersen Group filed an S-1 registration statement with the U.S. Securities and Exchange Commission for an (IPO) of Class A on the under the ticker "ANDG," aiming to raise capital for expansion, technology investments, and acquisitions, with the offering targeted for late 2025. Governance emphasizes ethical standards and integrity, drawing from lessons following the 2002 collapse of predecessor LLP, with board oversight focused on and transparency. The board, chaired by CEO Mark L. Vorsatz, plans for a majority of independent directors and operates as a controlled company under NYSE rules, opting out of certain requirements while providing indemnification for directors against losses not arising from . Compliance includes adherence to the Sarbanes-Oxley Act, (FCPA), (GDPR), and other international regulations, with ongoing remediation of identified material weaknesses in internal controls as of June 30, 2025. Financially, Andersen Tax maintains independent operations with access to shared global resources through the verein, reporting $384.1 million in for the six months ended June 30, 2025—a 12.4% increase from the prior-year period—driven by growth in tax, consulting, and advisory services. Full-year 2024 reached $731.6 million, supporting investments in goodwill ($30.1 million) and intangible assets ($2.4 million) as of mid-2025. Risk management centers on a deliberate separation from auditing services, avoiding the conflicts that contributed to Arthur Andersen's downfall, to preserve credibility in tax and consulting practices. This focus mitigates predecessor-related risks, with additional safeguards including vesting restrictions on equity units (5%–50% based on service tenure), cybersecurity measures, and no current foreign currency hedging, while addressing talent retention and acquisition integration challenges.

Key executives and governance

Mark Vorsatz has served as Global Chairman and CEO of Andersen Tax since September 2014, when the firm rebranded from WTAS LLC after acquiring the Andersen name. With over 35 years in tax advisory, Vorsatz was a partner at from 1987 to 2002, contributing to his expertise in tax planning and wealth preservation. Under his leadership, Andersen Tax has pursued aggressive global expansion, growing its network to over 180 locations worldwide while emphasizing integrated and consulting services. In November 2025, Andersen Tax bolstered its U.S. national practice with the addition of Ross Margelefsky and Daniel Gespass as managing directors. Margelefsky, with extensive experience in federal matters such as accounting methods, , and , advises on complex compliance and issues. Gespass focuses on similar federal strategies, enhancing the firm's capabilities in defense and regulatory navigation to better serve corporate clients. These appointments underscore Andersen's commitment to deepening U.S. expertise amid evolving legislative landscapes. Andersen Tax maintains governance through regular global partner meetings, such as the 2025 event in from November 2–4, which facilitate strategic alignment and knowledge sharing among its leadership; during this meeting, José Vicente Morote was re-elected to Andersen's Global Board. The firm supports via its DEI Advisory Council, which addresses employee feedback and promotes inclusive initiatives across operations. In 2025, Accounting Today recognized Andersen as a leading U.S. firm in its annual rankings, highlighting its robust practices and growth. Under executive guidance, Andersen is advancing strategic initiatives, including preparations for a potential U.S. IPO announced in September 2025, with committees formed to manage proceeds allocation and . Leaders are also integrating AI technologies, exemplified by a October 2025 partnership with the for generative AI tax research training, emphasizing ethical and client-focused innovation. This approach prioritizes tools that enhance research efficiency while upholding professional standards. Andersen employs a partner promotion model for , regularly elevating experienced professionals to managing director roles to ensure continuity of and advisory expertise. This structure supports long-term stability in a partnership-based , fostering internal talent development amid expansion.

References

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