Mazars USA LLP

Mazars USA LLP
Name	Mazars USA LLP
Type	Limited liability partnership
Industry	Professional services
Founded	1990 (as an independent firm in the United States)
Headquarters	New York City, New York, United States
Key people	Benoît de Juvigny; Erik Orsenna; Philippe Castagnac
Products	Audit, Accounting, Tax, Advisory, Consulting, Financial Advisory, Risk Management, Transaction Services
Revenue	(see Financial Performance and Rankings)
Num employees	(see Corporate Structure and Ownership)

Mazars USA LLP is an independent accounting, tax, and advisory firm operating in the United States that serves multinational corporations, privately held companies, family offices, and public sector entities. The firm participates in audit, tax compliance, financial advisory, and consulting engagements across diverse industries, and is affiliated with a global partnership that provides integrated international services. Mazars USA LLP engages with financial regulators, standards setters, and professional bodies while competing in the marketplace with major accounting firms and regional professional services firms.

History

Mazars USA LLP traces its American lineage to firms with roots in transatlantic accounting relationships that evolved during the late 20th century alongside the expansion of European firms into North America. The U.S. firm developed through strategic mergers and alliances influenced by developments affecting Arthur Andersen, PricewaterhouseCoopers, Deloitte, Ernst & Young, and KPMG in the wake of regulatory reforms such as the Sarbanes–Oxley Act. Historical milestones include expansion of service lines following international consolidation movements involving French and Dutch professional networks, contemporaneous with reorganizations in response to crises exemplified by the collapse of Arthur Andersen and the corporate scandals involving Enron and WorldCom. Mazars USA LLP’s trajectory has been shaped by interactions with securities regulators including the U.S. Securities and Exchange Commission and accounting standard-setters such as the Financial Accounting Standards Board and the International Accounting Standards Board.

Corporate Structure and Ownership

Mazars USA LLP operates as a limited liability partnership structured to provide professional services through partner governance and management committees, while maintaining an affiliation with the global Mazars group, a separate international partnership headquartered in Europe. The corporate governance model features partner-elected leadership, executive committees, and regional management, following governance norms similar to those of firms like Baker Tilly, RSM US, and Grant Thornton. Ownership resides with equity partners subject to regulatory capital and professional independence rules promulgated by bodies such as the Public Company Accounting Oversight Board and state accountancy boards. Strategic decision-making aligns with cross-border coordination mechanisms found in international networks such as Mazars Group (global), enabling shared methodologies, quality control frameworks, and professional development initiatives comparable to programs administered by Institute of Chartered Accountants in England and Wales and American Institute of Certified Public Accountants.

Services and Practice Areas

Mazars USA LLP offers a spectrum of professional services spanning audit and assurance, tax compliance and advisory, transaction advisory services, forensic accounting, valuation, risk management, and consulting related to regulatory compliance and financial reporting. Audit engagements address reporting under U.S. GAAP and IFRS frameworks, with advisory services supporting mergers and acquisitions, integration, and due diligence processes akin to those conducted by firms advising on deals involving Blackstone Group, Goldman Sachs, or The Carlyle Group. Tax practice areas cover corporate tax, international tax, transfer pricing, and state and local tax matters intersecting with statutes such as the Internal Revenue Code and rulings issued by the Internal Revenue Service. Risk and compliance services relate to anti-money laundering programs, sanctions screening tied to actions by entities like the U.S. Department of the Treasury, and internal controls assessments consistent with SOX requirements. The firm also provides specialized industry practices for sectors including financial services, healthcare, real estate, energy, and technology—sectors served by contemporaries such as Morgan Stanley, JPMorgan Chase, Pfizer, ExxonMobil, and Alphabet Inc..

Geographic Presence and Offices

Mazars USA LLP maintains a network of offices across the United States with concentrations in key financial and commercial centers to serve domestic and international clients. Major office locations include metropolitan markets such as New York City, Chicago, Los Angeles, San Francisco, Washington, D.C., and Houston. This domestic footprint facilitates coordination with international offices in capitals and financial centers across Europe, Asia, Africa, and the Americas, enabling client service continuity with offices in cities like London, Paris, Amsterdam, Shanghai, and São Paulo. The firm’s geographic strategy mirrors global professional networks that deploy multicity coverage to support cross-border transactions and regulatory filings before institutions including the SEC, central banks, and international development banks such as the World Bank.

Regulatory Issues and Legal Matters

Mazars USA LLP operates in a heavily regulated environment and interacts with enforcement and oversight authorities including the Public Company Accounting Oversight Board, the U.S. Securities and Exchange Commission, and state accountancy regulators. Legal matters have included engagements reviewed under inspection programs, litigation concerning professional liability, and compliance with independence rules and audit quality standards similar to challenges faced historically by firms involved in enforcement actions linked to cases like Enron and WorldCom. The firm participates in debates about audit reform promoted by legislators in the U.S. Congress and policy proposals from the PCAOB and SEC addressing audit firm rotation, transparency, and audit market concentration.

Financial Performance and Rankings

Financial performance and market rankings for Mazars USA LLP reflect revenue growth, partner headcount, and market penetration relative to national and global competitors. The firm reports annual revenues and growth metrics that place it among large national firms and within the cohort of international networks evaluated alongside RSM International, BDO Global, and Grant Thornton International. Rankings are published by professional services analysts and business publications that compare metrics such as revenue, partner numbers, and geographic reach—criteria used by outlets that profile firms like PricewaterhouseCoopers and Deloitte. Financial disclosure practices align with professional norms while subject to audit quality indicators and market analyses produced by industry observers including financial press and accounting trade media.

Category:Accounting firms of the United States