Big 4 Advisory Firms

The 4 biggest advisory firms: Deloitte, Ernst & Young (EY), Klynveld Peat Marwick Goerdeler (KPMG), and PricewaterhouseCoopers (PwC).

Author: Ahmed Makki
Ahmed Makki
Ahmed Makki
I hold a BBA in Banking and Finance from LIU and a Graduate Diploma in Business Administration from Concordia university Canada. With 2+ years of experience in the asset management/financial services industry, I specialize as an AML Analyst. My skills include risk assessment, regulatory compliance, and financial analysis.
Reviewed By: Sakshi Uradi
Sakshi Uradi
Sakshi Uradi
As a qualified Certified Management Accountant (US CMA), I have developed a strong foundation in financial planning, budgeting, forecasting, performance management, cost management, internal controls, technology, and analytics. Currently working as a data analyst at S&P Global, where I analyze and deal with financial data and estimates. I thrive in dynamic environments that demand continuous learning and adaptation. I am thrilled about the endless possibilities that lie ahead in the finance and data analytics realm.
Last Updated:July 28, 2024

What Is the "Big Four"?

The Big Four refers to the four most prominent consulting firms in the entire globe, specifically in accounting, including DeloitteErnst & Young (EY), Klynveld Peat Marwick Goerdeler (KPMG), and PricewaterhouseCoopers (PwC). They are generally referred to as the "Big Four."

The four networks are frequently grouped together for a number of reasons, including:

  • Their comparable size in terms of revenue and workforce compared to the rest of the market
  • Their ability to offer a broad range of professional services to their clients
  • Professionals frequently choose to start their careers in these institutions, particularly in accounting.

These four networks undertake the vast majority of audits of public and private enterprises.

In addition to auditing, the Big Four also offers services such as:

  • Tax
  • Corporate strategy consulting
  • Management consulting
  • Corporate finance
  • Actuarial
  • Valuations
  • Market analysis
  • Assurance
  • Legal advising services

They recently started providing guidance for digital transformation to fulfill the digital age's expectations. They are the go-to source for interpreting tax legislation and the foremost authority on modifications to auditing and accounting standards.

However, despite their vast resources and insider access to corporations, these giants have not been the ones to unearth the significant scams that have hurt the shareholders of companies and investors in funds. Experts in forensic accounting, not any of the Big Four, revealed Enron and WorldCom.

According to critics, accounting firms are reluctant to probe their paying clients too deeply or aggressively look into any dubious activity in their records. Biting the hand that feeds you would be equivalent to doing that.

Generate Key Takeaways
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  • The "Big Four" refers to the four largest global accounting and professional services firms, which are Deloitte, PricewaterhouseCoopers (PwC), Ernst & Young (EY), and KPMG. They are known for providing audit, tax, consulting, and advisory services.
  • The Big Four emerged from a series of mergers and rebrandings of earlier accounting firms. Historically, there were once more than four major firms, but mergers and acquisitions reduced the number to the current Big Four.
  • These firms dominate the global accounting and consulting industry, handling a significant portion of the world's financial auditing and business consulting needs.
  • The Big Four firms provide a broad range of services, including financial auditing, tax planning and compliance, management consulting, risk management, and advisory services.

The Big Four

The Big Four represents the four largest networks of professional accounting advisory services. They are considered to be "big four" because of their size, comparable as a relative of the market, revenue, and workforce, providing extensive accounting, taxation, and auditing services, and their ability to provide jobs to professionals in these fields.

The top accounting advisory firms, or the "big four," are as follows.

Deloitte

Tens of thousands of committed employees from independent businesses across the globe work together under the "Deloitte" brand to offer specialized clients audit, consulting, financial advisory, risk management, tax, and associated services. 

These businesses are affiliates of the UK-based private corporation limited, Deloitte Touche Tohmatsu Limited ("DTTL").

Each DTTL member company offers services in specific geographic regions and is bound by the legal and ethical requirements of the nation or nations in which it conducts business.

Each DTTL member firm is organized in line with local laws, rules, customs, and other elements. Through subsidiaries, affiliates, and other linked organizations, a member firm may secure the provision of professional services in its region. 

Not all DTTL member firms offer all services, and in accordance with the laws governing public accounting, some services might not be accessible to clients who attest.

Since DTTL and each DTTL member company are different autonomous legal persons, they cannot bind one another. 

The actions and inactions of DTTL and each DTTL member firm are solely their own and not those of the other. Client services are not offered by DTTL (also known as "Deloitte Global").

PricewaterhouseCoopers (PwC)

PWC is proud of its 110-year legacy of fostering organizational success. 

From coast to coast, their associates and partners contribute their knowledge to deliver high-quality services and goods such as:

  • Audit and assurance
  • tax
  • transactions
  • consulting
  • target solutions for financial crime
  • cybersecurity
  • privacy
  • the workforce of the future
  • finance transformations
  • value creation
  • cost reduction

They collaborate as a single company to combine various viewpoints and skills to accomplish what is most important. They are among the top professional services networks in the world, with offices in 155 countries and more than 284,000 employees. 

To increase public trust, they created value for their employees by offering the best of their collective thoughts, expertise, and solutions.

Their objective statement is "At the heart of what we do", which aims to increase societal trust and solve significant issues. 

It directs how they serve their customers, community, and the entire planet. PwC offers expert services in two business divisions, Trust Solutions and Consulting Solutions, to assist clients in establishing trust and achieving lasting results. 

They offer a variety of capabilities to help firms solve problems more quickly and generate additional value within these areas.

Cloud and digital, transactions, ESG, cybersecurity and privacy, governance/boards, risk, transformation, tax services, and many other capabilities are among them.

Klynveld Peat Marwick Goerdeler (KPMG)

The Klynveld Peat Marwick Goerdeler is another name for KPMG. Peat Marwick was founded in 1911 due to the merger of two businesses. The three primary services that KPMG provides are audits, consulting services, and taxation. 

KPMG is a full-service company since these three services can be divided into many smaller ones. KPMG places a high value on creating a culture that recognizes excellence in performance and develops talent.

KPMG experts have offered consulting, accounting, auditing, and tax services for more than 150 years while fostering change, innovation, and trust. 

They serve private and public sector clients while guided by core values. 

KPMG is frequently rated as one of North America's finest employers and a great workplace. Their audit opinion results from a potent combination of independence, professionalism, and ethical conduct supported by rigorous quality control methods. 

This strategy is supported by some of the top methodologies, technology, and tools that enable our teams to access information, concentrate on the problems that impact the audit conclusions, and contribute to the audit's increased effectiveness.

Overall, the analysis offers an insightful and objective assessment attesting to the caliber of the data presented. The tax practice at KPMG caters to each client's particular requirements and goals, assisting them in striking a balance between compliance and value generation. 

They provide a wide range of local and foreign tax services and KPMG enterprise's private company tax services

Their multidisciplinary approach provides clients with the ideal combination of services and experts who look beyond the immediate future and national boundaries to handle your tax issues and prospects.

Ernst & Young (EY)

Another "big four" worldwide accounting firm is Ernst & Young, frequently abbreviated as "EY." It is headquartered in London.

In 1989, the two businesses, Ernst & Ernst and the Arthur Young Company, merged to establish EY. 

More than 150 offices spread over more than 150 different nations make up the corporation, which operates globally. 

They provide numerous services, such as audits and assurance, tax issues, counseling, transactions, etc.

Their mission at EY is to create a better working environment. The knowledge and high-caliber services contribute to the development of trust and confidence in the global economy and capital markets. 

EY generates outstanding leaders who cooperate to do their work and satisfy the stakeholders. 

By doing this, EY dramatically improves the working conditions for their clients, staff, and communities.

They support digital pioneers in their fight against data theft, assist governments in navigating cash flow problems, use data analytics to discover novel medical treatments and pursue high-caliber audits to increase public and private sector confidence.

EY assists its clients in seizing new possibilities, evaluating and managing risk, and achieving responsible growth through its four integrated service lines of assurance, consulting, strategy and transactions, and tax.

Their practical, diversified teams assist companies in meeting regulatory requirements.

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