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Big Four

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lightbulbAbout this topic
The Big Four refers to the four largest professional services networks in the world, primarily known for their audit, tax, consulting, and advisory services. These firms—Deloitte, PricewaterhouseCoopers (PwC), Ernst & Young (EY), and KPMG—dominate the accounting industry and are recognized for their global reach and influence in financial reporting and corporate governance.
lightbulbAbout this topic
The Big Four refers to the four largest professional services networks in the world, primarily known for their audit, tax, consulting, and advisory services. These firms—Deloitte, PricewaterhouseCoopers (PwC), Ernst & Young (EY), and KPMG—dominate the accounting industry and are recognized for their global reach and influence in financial reporting and corporate governance.

Key research themes

1. How do corporate governance mechanisms, including audit quality and board independence, influence firm performance and financial reporting behavior?

This research theme investigates the interplay between CEO power, board independence, audit quality—especially engagements with Big Four auditors—and their combined effect on firm performance and earnings management. It matters as it provides empirical insights into how governance structures and audit market dominance impact firm valuation, reporting accuracy, and regulatory compliance, informing policy and investor decision-making.

Key finding: The study finds a positive effect of CEO power on firm performance, with board independence partially mediating this relationship. Specifically, independent boards enhance the beneficial impact of CEO power by providing... Read more
Key finding: Analyzing Australian firms during the Global Financial Crisis (GFC), this paper shows that earnings management increased significantly during the crisis. Crucially, audit quality—proxied by Big Four auditor engagement—and... Read more
Key finding: This study finds that following the 2002 Sarbanes-Oxley Act (SOX), firms audited by Big Four auditors exhibited significant declines in earnings management, whereas those audited by Non-Big Four firms did not experience... Read more
Key finding: The research documents that newly appointed CEOs in Brazilian firms engage in 'big bath' earnings management primarily when the firm was previously profitable rather than unprofitable. The study identifies accrual-based... Read more
Key finding: Focusing on Nigerian listed banks, this study establishes that firms audited by Big Four auditors experience significantly shorter audit report lags (ARL), suggesting higher audit efficiency. Board characteristics such as... Read more

2. What are the implications of Big Four audit firms’ dominance and network characteristics on the audit industry structure and audit practices?

This theme explores the oligopolistic positioning of the Big Four audit firms in global and regional markets, how their collaborative and competitive dynamics shape audit quality and market access, and the implications of audit firm network ties for joint audit practices. Understanding these factors is crucial for regulators and policymakers concerned with audit market concentration, auditor independence, audit quality, and competition.

Key finding: The study demonstrates that in Saudi Arabia, the Big Four audit firms exhibit strong mutual ties in conducting joint audits, forming an oligopolistic audit market controlling over 68% of audit engagements. While joint audits... Read more
Key finding: Using Australian data from 1996 to 2007, this paper finds that audit fee premiums paid to Big N firms (Big 6 evolving to Big 4) increased significantly as the number of Big N firms decreased. However, this premium growth was... Read more
Key finding: Investigating client perceptions, this study reveals that the Big Four audit firms do not uniformly enjoy superior reputations compared to smaller audit firms. Moreover, it uncovers reputational differences within the Big... Read more

3. How have organizational theories and external crises shaped contemporary management and decision-making strategies in organizations?

This theme involves evaluating foundational organizational theories—especially the 'Big Four' theories of management—and assessing their relevance and adaptation in response to crises such as the COVID-19 pandemic. It also explores systemic crises' effects (financial, environmental) on organizational behavior and policy, emphasizing decision-making dynamics and sustainability challenges. This understanding assists scholars in contextualizing management practices within evolving global risks.

Key finding: Through comparative analysis, the paper posits that Simon's Administrative Behavior theory—which stresses decision-making processes—is the most relevant organizational theory during the COVID-19 pandemic context. This... Read more
Key finding: The research shows that the COVID-19 pandemic caused a temporary reduction in global CO2 emissions due to lockdowns and travel restrictions but emissions rebounded quickly in 2021. It argues that the fossil fuel industry's... Read more
Key finding: This analysis reveals that in EU bank bailouts post-2008, the Big Four audit firms, alongside select financial consultancy and legal firms, have profited extensively through lucrative advisory contracts. Despite controversial... Read more

All papers in Big Four

Despite significant reforms, notably the Sarbanes-Oxley Act of 2002 (SOX), the U.S. auditing system remains susceptible to catastrophic failures, leaving U.S. capital markets dangerously exposed to systemic risks, as evidenced by... more
Diante da crise economica que ocorreu em 2008, os usuarios das demonstracoes contabeis requerem cada vez mais transparencia e informacoes confiaveis nos relatorios. Por essa razao, o International Auditingand Assurance Standards Board... more
This study examines the mediating effect financial leverage on the relationship between ownership structure and cash holdings of listed service in Nigeria. The study employed correlational research design using data from the Nigeria... more
Nos últimos anos a literatura de auditoria tem chamado atenção para a importância das características individuais, do ceticismo profissional e da estrutura da firma dos resultados de qualidade do trabalho do auditor independente. Realizar... more
The purpose of this paper is to investigate the relation between board structure and firm risk-taking in a sample of 8 extractive firms listed on the Nairobi Securities Exchange (NSE). The agency theory provided the theoretical foundation... more
In an era of accelerating digital transformation, the integrity and efficiency of tax audits have become more critical than ever. As governments confront increasing fiscal pressures, ensuring high-quality audits is essential to... more
Drawing on the CEO attributes and financial performance literature, we use a pooled data design to investigate the effect of CEO nationality and tenure on the financial performance of listed firms in Nigeria over a period of ten years... more
The increasing globalization of corporate boards has intensified scholarly interest in understanding the role of foreign directors in shaping strategic financial decisions such as dividend policy. However, the empirical evidence on the... more
The purpose of this study is to investigate the primary research question: To what extent do perceived ease of use (PEOU) and perceived usefulness (PU) explain auditors' behavioral intentions (BI) to adopt big data analytics (BDA) in... more
This paper is an attempt to critically review the article "Piece's of Evolution's Puzzle: A Social- Philosophical Perspective" by Gregory M. Sandstrom. I argue that Mr. Sandstrom's paper, though it may offer... more
This article uses an ex-post facto and cross-sectional research approach to investigate the effect of audit quality on the value of selected manufacturing companies listed on the Nigeria Exchange Group's floor for a ten-year period... more
This article uses an ex-post facto and cross-sectional research approach to investigate the effect of audit quality on the value of selected manufacturing companies listed on the Nigeria Exchange Group's floor for a ten-year period... more
There is little evidence available on whether external auditors' independence collaborates or mitigates earnings manipulation. Therefore, this study examines the effects of external auditor's independence on earnings management of... more
Ministarstvo financija: Definicija unutarnje revizije, [Internet], preuzeto sa: (25.05.2017.) 2 Rogošić, N.: Uloga interne revizije u jačanju etičnosti u javnom sektoru, preuzeto sa:... more
The paper examines the effects of corporate governance characteristics on audit report lag (ARL) of listed banks in Nigeria. Fourteen banks were used in the study. The study covers a 5-year period from 2008 to 2012. Findings of the study... more
The relationship between CEO power and firm performance remains a contentious issue in corporate governance literature, with mixed empirical findings. While some studies suggest that a powerful CEO enhances strategic decision-making and... more
Earnings management assumed appear and performed by the manager or the compilers of financial statements in the financial reporting process of a company because they expect a benefit from such action. Earnings management as a phenomenon... more
Earnings management assumed appear and performed by the manager or the compilers of financial statements in the financial reporting process of a company because they expect a benefit from such action. Earnings management as a phenomenon... more
O presente estudo dispos-se a averiguar qual o reflexo que a opiniao modificada tem em empresas listadas na B3 (Brasil, Bolsa, Balcao). Para a construcao deste trabalho foram analisadas as 441 empresas que encontram-se listadas no sitio... more
O presente trabalho analisou o efeito das Big Four sobre o tipo de opinião dos auditores. O estudo, descritivo, documental e quantitativo, analisou relatórios anuais de 504 empresas listadas na [B]³ no período de 2002-2012 através de... more
Oklahoma corporate and other business entity statutes have changed markedly in the past few years. In 1986, the Oklahoma General Corporation Act (OGCA),' a Delaware-based act, replaced the Oklahoma Business Corporation Act. 2 In 1992, the... more
RESUMEN El objetivo de este trabajo es analizar la existencia de compra de opinión en España a través del estudio de los cambios «sospechosos» de auditor, es decir, aquellos que se realizan hacia auditores menos independientes que el... more
In the business world, especially nowadays, great attention has been placed to business ethics. Different laws, regulations and codes of professional ethics are designed and adopted for the purpose of protecting professional activities.... more
This study examines the effectiveness of the 2002 Sarbanes Oxley Act (SOX). We investigate the earnings management (EM) of companies during the pre-SOX period (i.e., the scandal period), and the post-SOX period (but prior to the enactment... more
This study aims to analyze the influences of audit committee characteristics, consisted of audit committee size, independent commissioners of audit committee, audit committee meeting frequency, and financial competence of audit committee... more
We investigate the effects of audit market concentration on audit fees and audit quality in China, where competition is intense and the legal environment is relatively weak compared with developed countries. Analyzing 12,334 firm-year... more
Following enactment of the Sarbanes-Oxley Act (SOX) of 2002, Big 4 auditors claimed to have a more conservative policy regarding client retention and acceptance decisions. In this paper, we examine the resignations of Big 4 audit firms in... more
The term auditor originates from the expression auditor, which in Latin, it means to listen. Nonetheless, when scrutinising the duties and obligations of auditors, it reveals that they do not merely listen. They also examine and report to... more
Purpose: We examine the earnings management behaviour of Australian firms during the Global Financial Crisis (GFC) and the effectiveness of audit quality and audit committee characteristics in mitigating such behaviour.... more
Este artigo debruça-se sobre o avanço do gerencialismo norte-americano e seus reflexos sobre a administração pública brasileira. Mais especificamente, o foco concentra-se na introdução da cultura do management por meio do novo sistema de... more
O presente trabalho analisou o efeito das Big Four sobre o tipo de opinião dos auditores. O estudo, descritivo, documental e quantitativo, analisou relatórios anuais de 504 empresas listadas na [B]³ no período de 2002-2012 através de... more
Politika određivanja i reguliranja revizijskih naknada dugogodišnja je i uvijek aktualna problematika, kako sa stručnog tako i sa znanstvenog aspekta. Naime, visina revizijskih naknada ima brojne implikacije na kvalitetu pruženih... more
At the conclusion of the Korean war, American policy focused on the development of a strong, economically sound ally in the Pacific, setting the stage for Japan's spectacular growth of 10% per year from 1956 until the early 1970's. KANJI... more
At the conclusion of the Korean war, American policy focused on the development of a strong, economically sound ally in the Pacific, setting the stage for Japan's spectacular growth of 10% per year from 1956 until the early 1970's. KANJI... more
There has been a lively debate following the 2007 financial crisis regarding the role of joint audits. Prior research argues that joint audits may improve audit quality because of shared audit efforts. However, empirical evidence has been... more
Purpose – This study aims to investigate the potential threats to the independence of an auditor who provides both auditing and non-audit services (NAS), in terms of credibility of and confidence in audit quality.... more
Bağımsız denetim; işletmelerin faaliyetleri sonucu ortaya çıkan finansal durumların önceden belirlenmiş ilke ve standartlara uygunluğunun belirlenmesi ve gerçeğe en uygun şekilde yansıtılıp yansıtılmadığı konusunda değerlendirme yapılması... more
Purpose: This paper reflects on the professional liability of auditors from perspective of Common Law and Statute Law in Australia. Design/methodology/approach: The approach applied in this paper is analogous with a narrative... more
The study aimed at finding the relationship between audit quality, abnormal audit fee and auditor attributes. The study employed ordinary least square regression technique to analyze the relationship between the dependent and independent... more
The competition to attract trainee accountants is fierce among accounting firms. Millennials seemingly have expectations in terms of work experiences and work environments that arguably cannot be ignored by accounting firms. This paper... more
analyzing the change in Big N audit fee premium over the Big 6, Big 5, and Big 4 periods, and across different client segments. Using a large sample of Australian publicly listed companies over the years 1996-2007, we find that while... more
This article analyzes the two distinct communicative logics that inform the institutional geography and normative understanding of global sociology. The globalizing logic imagines a unitary global space that organizes sociological debate;... more
, the Public Company Accounting Oversight Board (PCAOB) issued a concept release asking for comment on the usefulness of mandatory audit firm rotation [MAFR] and/or other measures that could bolster independence. In the release, the board... more
This study aims to empirically examine the effect of auditors’ independence, audit tenureship, firm characteristics on audit quality in Nigeria. The population of the study comprises a sample of ten (10) listed pharmaceutical companies... more
This study examines the prevalence of big bath accounting in an emerging market context, focusing on newly appointed CEOs of Brazilian firms. We find evidence of big bath accounting in Brazil and extends the big bath and CEO turnover... more
When a company is incorporated it is treated as a separate legal entity distinct from its promoters, directors, members, and employees; and hence the concept of the corporate veil, separating those parties from the corporate body, has... more
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