Accounting firms sit at the center of how organizations manage compliance, risk and growth, from statutory audits to tax planning to outsourced finance functions. For tech experts and financial services professionals, the field offers more than ledgers and tax forms: many firms now build audit platforms, embed AI into compliance work and run technology consulting practices alongside traditional assurance and tax services.
For anyone exploring career paths in accounting or looking to understand how the profession is evolving, we’ve rounded up a list of accounting firms worth knowing. These organizations range from global networks with offices across continents to firms focused on middle market and regional clients. Each has distinct practice areas, client industries and approaches to incorporating technology into audit, tax and advisory work.
PwC is a professional services firm offering audit and assurance, tax and advisory services to organizations across industries from offices worldwide. Its Audit and Assurance practice has expanded AI-enabled tools across the audit lifecycle, including Data PRO and Acquisition Hub for data collection and standardization, alongside accelerators that support planning, risk assessment, control testing and audit committee reporting. These capabilities draw on alliances with Microsoft and OpenAI to embed generative AI into engagement work. PwC hires accountants and auditors into roles spanning Tax Services, Audit and Assurance, and Advisory, with positions such as tax managers and audit managers working on compliance, financial statement audits and income tax accounting.
Deloitte is a professional services firm providing audit, assurance and tax services to organizations across industries worldwide. Its audit practice performs financial statement audits and evaluates internal controls over financial reporting, using Deloitte Omnia, a digital audit platform built with AI capabilities to analyze client data. Tax teams handle compliance, tax provision preparation and advisory work covering mergers and acquisitions, transfer pricing, and multistate and international tax matters. Deloitte hires accountants, auditors and tax consultants into roles spanning controllership, technical accounting and tax advisory, with openings posted across multiple U.S. locations and recruiting that includes interns for upcoming audit and tax seasons.
Wipfli is a top 25 middle market accounting and advisory firm serving more than 54,000 clients across the United States, with Wipfli LLP operating as a licensed independent CPA firm providing attest services and Wipfli Advisory LLC handling tax and business consulting. Its accountants and advisors deliver audit and assurance, tax planning, and outsourced finance and accounting support, including fractional CFO and controller services, bookkeeping, financial reporting and cash-flow management for clients across industries such as construction, healthcare, government and manufacturing. In 2026, Wipfli ranked fifth on Construction Executive’s Top 50 Construction Accounting Firms list, reflecting its national construction accounting and tax practice.
Ernst & Young, known as EY, is one of the Big Four accounting firms, offering assurance, tax, consulting, strategy and transactions services to clients across more than 150 countries and territories. Its accounting teams handle statutory reporting, financial statement preparation, audit support and tax compliance for organizations ranging from startups to global corporations. EY has committed to investing $1 billion over three years in compensation and technology aimed at early-career accounting professionals, including higher starting pay and AI-enabled audit and tax platforms, part of an effort to strengthen the pipeline of accountants entering the profession through its “360 Careers” experience and expanded support for college students pursuing accounting degrees.
KPMG is the United States member firm of the global KPMG network, providing audit, tax and advisory services to organizations across industries. Its audit practice relies on KPMG Clara, a cloud-based smart audit platform that integrates data, analytics and AI agents into tasks such as expense vouching, controls testing and financial statement analysis. On the tax side, its Digital Gateway platform embeds generative AI tools for compliance, reporting and research.
Forvis Mazars Group operates as an internationally integrated partnership delivering audit, tax and advisory services across more than 100 countries and territories, serving as one of two members of the Forvis Mazars global network alongside Forvis Mazars, LLP in the United States. Its teams provide audit and assurance, consulting, financial advisory, tax, outsourcing and private client services, with practice areas spanning risk consulting, internal audit, mergers and acquisitions advisory, and technology and digital consulting including cybersecurity and data privacy work. The firm also runs international desks that connect clients with local expertise as they expand across borders, reflecting the cross-border audit and advisory work that defines its practice.
RSM US LLP delivers audit, tax and consulting services focused on the middle market, operating as the U.S. member firm of RSM International. Its audit practice covers public and private company engagements and employee benefit plan audits, while its tax group handles federal, state and local, and international tax planning. The firm’s accounting advisory arm supports private equity-backed and public companies with technical accounting, SEC reporting, Sarbanes-Oxley compliance and transaction accounting tied to mergers and acquisitions. RSM also offers outsourced accounting and finance solutions, including fractional controllers and finance business process outsourcing, for companies scaling their back-office operations. Headquartered in Chicago, the firm maintains offices across the United States along with integrated teams in Canada, India and El Salvador, employing professionals in assurance, tax and consulting roles nationwide.
Weaver is a national accounting and advisory firm headquartered in Houston, Texas, offering audit, tax and advisory services to clients in financial services, energy, manufacturing, real estate, health care and government. Its advisory work spans transaction advisory, valuation, forensics and litigation services, state and local tax, and public sector consulting for governments and higher education institutions.
EisnerAmper provides accounting, tax, advisory and outsourcing services to businesses, government organizations and individuals across the United States and internationally. The firm operates under a dual structure in which EisnerAmper LLP serves as the licensed CPA firm handling audit and attest work, while Eisner Advisory Group LLC and its subsidiaries deliver tax and business consulting services. Its practice areas span federal, state and international tax compliance, transaction advisory support for mergers and acquisitions, and outsourced CFO, accounting and finance functions. EisnerAmper also runs a dedicated Private Client Services group that handles tax planning, trust and estate services, and financial reporting for high-net-worth individuals and closely held businesses, alongside industry-focused teams serving sectors such as financial services, energy and life sciences.
Armanino LLP is a licensed independent CPA firm that provides attest services as part of an alternative practice structure with Armanino Advisory LLC, which handles tax, advisory and business consulting work under the shared Armanino brand. Together they serve clients across industries such as private equity and venture capital, healthcare, real estate, manufacturing and technology, offering audit, tax planning, fund administration, outsourced accounting and ERP consulting. Its private equity practice alone works with more than 100 PE and VC firm clients and roughly 2,500 portfolio companies, reflecting a practice built around complex, multi-entity financial reporting and compliance work rather than general tax preparation.
Cherry Bekaert is a certified public accounting and advisory firm headquartered in Raleigh, North Carolina, offering assurance, tax and advisory services to businesses, nonprofits and government entities across the United States. Its tax practice covers corporate tax planning, state and local tax, international tax, tax credits and incentives, and tax controversy work, while its advisory teams handle accounting and CFO support, ERP consulting and risk and cybersecurity services. In November 2026, the firm acquired Sansiveri, Kimball & Co., a Rhode Island accounting and advisory firm, extending its presence into New England.
Ryan is a tax services and software firm headquartered in Plano, Texas, with additional headquarters operations in Mississauga, Ontario and offices worldwide, including London. It provides end-to-end tax solutions spanning recovery, consulting, advocacy, compliance, technology and legal services, covering property, income, indirect, severance, and credits and incentives tax types for clients across industries such as financial services and professional services. Its multidisciplinary teams include accountants, lawyers, data scientists and technologists who handle tax administration, audit defense and controversy resolution. Ryan also builds its own tax technology platform, powered by its proprietary software suite, offering automated calculations, filings and AI-driven document processing to help clients manage compliance and recover overpaid tax dollars across global jurisdictions.
Citrin Cooperman is an accounting firm headquartered in New York that provides audit and assurance, tax and advisory services, operating under Citrin Cooperman & Company, LLP for attest work and Citrin Cooperman Advisors LLC for tax and consulting. It works primarily with privately held and family-owned companies, alongside dedicated practices serving industries such as staffing, construction and franchising. The firm ranked sixteenth on Accounting Today’s 2026 Top 100 Firms list with close to $871 million in United States revenue. In 2026 it acquired LGA, a Massachusetts-based firm, expanding its footprint in New England and adding to its roster of audit, tax and advisory professionals.
UHY is the brand under which UHY LLP and UHY Advisors, Inc. provide audit, tax, consulting and advisory services to middle-market and closely held businesses, operating as the United States member of UHY International. Headquartered in Farmington Hills, Michigan, the firm has pursued a national expansion strategy built on combining with regional CPA practices, including the November 2026 addition of Dallas-Fort Worth firm Merki & Associates and the prior combination with Central Ohio’s Whalen CPAs. These moves have added local tax, accounting and advisory teams across new markets while giving clients access to UHY’s broader specialty practices in valuation, transaction advisory and audit services.
Baker Tilly US, LLP is a licensed independent CPA firm providing audit and attest services, working alongside Baker Tilly Advisory Group, LP, which handles tax and business advisory work for clients across industries such as financial services, real estate, manufacturing and the public sector. Its accounting and finance services team offers outsourced bookkeeping, controller and CFO-level support, while its assurance practice covers public company SEC reporting and IFRS transition work. The firm has grown through acquisition, including its acquisition of New York accounting firm Anchin, Block & Anchin LLP, which established New York City as its corporate headquarters, alongside its addition of Nashville-based KraftCPAs PLLC.
Raymond Chabot Grant Thornton provides assurance, tax and advisory services to businesses across Quebec and into Ontario and New Brunswick, operating from roughly 90 offices in the province along with locations in the Ottawa and Edmundston regions. Its accounting practice covers audit, review and compilation engagements, bookkeeping and financial statement preparation for companies of varying sizes, including reporting issuers navigating public-company disclosure requirements. Through its subsidiary Operio, the firm also offers cloud-based accounting and bookkeeping support built with National Bank and BDC. Founded in 1948, Raymond Chabot Grant Thornton operates as part of the Grant Thornton international network, giving clients access to cross-border expertise alongside its regional presence in Quebec and Canada.
Withum is a certified public accounting and advisory firm headquartered in Princeton, New Jersey, offering audit, tax, assurance and business advisory services to clients ranging from startups to global enterprises across industries such as technology, healthcare, construction and real estate. Its teams handle work including revenue recognition under ASC 606, R&D tax credits, cybersecurity and SOC audits, outsourced accounting and transaction advisory support through mergers and acquisitions.
BPM LLP is a full-service accounting and advisory firm headquartered in San Francisco, California, offering audit, tax, outsourced accounting and strategic advisory services. It ranks among the 35 largest public accounting and advisory firms in the United States, with offices across the West Coast and in India and growing teams in Texas following a new Austin office that opened in February 2026 to support clients in technology, blockchain and digital assets, life sciences and private equity. A Certified B Corp, BPM also serves clients in agribusiness, consumer business, nonprofit, wine and craft beverage, and real estate industries through its audit, tax and advisory practices.
BDO is the global accounting and advisory network operating through member firms such as BDO USA, P.C., which serves as the U.S. member of BDO International Limited. It provides audit and assurance, tax, and advisory services to organizations ranging from private companies to public filers, with practice areas spanning accounting advisory, outsourced finance and accounting, financial reporting under GAAP and IFRS, and transaction support for mergers, divestitures and IPOs. Its teams also serve industry groups including financial services and private equity, handling fund audit and tax compliance, regulatory issues, and risk management. BDO’s professionals work on engagements covering audit readiness, SEC reporting and technical accounting standards implementation for clients across these sectors.
CLA, known formally as CliftonLarsonAllen LLP, is one of the largest accounting and professional services firms in the United States, offering assurance, tax, outsourcing, wealth advisory and digital services from more than 120 U.S. locations and a Minnesota LLP headquarters. It serves more than 200,000 clients across industries including construction, health care, nonprofits, manufacturing and private equity, and reported revenue exceeding $2 billion in 2025. The firm’s construction practice earned the number two ranking in Construction Executive’s 2026 Top 50 Construction Accounting Firms list, its seventh consecutive year in the top five. CLA also operates globally through CLA Global, a network of independent accounting and advisory firms spanning more than 55 countries.
Liberty Tax is a tax preparation franchise headquartered in Hurst, Texas, operating more than 2,200 retail branches and over 12,000 tax professionals across the United States and Canada. Beyond seasonal income tax filing for individuals and small businesses, its local offices provide year-round accounting support including bookkeeping powered by Xero, payroll processing, tax debt resolution and advisory services such as budgeting, forecasting and cash flow optimization. Business clients can get help with Schedule C and Schedule SE filings, quarterly estimated payments and IRS audit support.