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Abstract(s)
A má qualidade da auditoria associada a informações financeiras enganosas pode ter graves consequências nos mercados financeiros, o que gera uma crescente preocupação por parte dos stakeholders que procuram, cada vez mais, informação fidedigna sobre a situação financeira das empresas. Consequentemente, compreender os determinantes que podem comprometer a qualidade da auditoria tornou-se um assunto de extrema importância para os utilizadores de informação financeira (Salehi et al., 2019). Importa notar que sempre existiu um debate entre as empresas de auditoria de dimensão maior e as de menor dimensão (Big 4 ou Não Big 4) e sobre qual delas apresentaria melhor qualidade da auditoria. Deste modo, esta dissertação tem como objetivo analisar se existe relação entre a dimensão do auditor e a qualidade da auditoria, em Portugal. Para quantificar a manipulação de resultados (MR), foi utilizado o Modelo de Jones Modificado, estimando os accruals discricionários, e uma regressão linear baseada na equação de Lawrence, et al. (2011). A amostra é composta por 16.540 empresas portuguesas, para o período compreendido entre 2020 e 2022, inclusive. Os resultados obtidos indicam que empresas auditadas por Big 4 apresentam maior manipulação de resultados face a empresas portuguesas auditadas por não Big 4.
A low audit quality associated with misleading financial statements can have severe consequences in the financial markets, leading to increasing concerns among stakeholders who seek reliable financial statements from companies. Consequently, understanding the determinants that affect the quality of an audit has become an extremely important issue for the financial information users (Salehi et al., 2019). It is worth noting that there has always been a debate between larger and smaller auditing firms (Big 4 or Non-Big 4) regarding which presents better audit quality. In this sense, this dissertation aims to analyze whether there is a relationship between the size of the auditor and the quality of the audit in Portugal. In order to quantify earnings manipulation (EM), the Modified Jones Model was used, estimating the discretionary accruals, and a linear regression based on the Lawrence, et al. (2011) equation. The sample consists of 16,540 companies for the period from 2020 to 2022, inclusive. The results obtained show evidence that Portuguese companies audit by Big 4 exhibit more earnings manipulations than Portuguese companies audit by Non-Big 4.
A low audit quality associated with misleading financial statements can have severe consequences in the financial markets, leading to increasing concerns among stakeholders who seek reliable financial statements from companies. Consequently, understanding the determinants that affect the quality of an audit has become an extremely important issue for the financial information users (Salehi et al., 2019). It is worth noting that there has always been a debate between larger and smaller auditing firms (Big 4 or Non-Big 4) regarding which presents better audit quality. In this sense, this dissertation aims to analyze whether there is a relationship between the size of the auditor and the quality of the audit in Portugal. In order to quantify earnings manipulation (EM), the Modified Jones Model was used, estimating the discretionary accruals, and a linear regression based on the Lawrence, et al. (2011) equation. The sample consists of 16,540 companies for the period from 2020 to 2022, inclusive. The results obtained show evidence that Portuguese companies audit by Big 4 exhibit more earnings manipulations than Portuguese companies audit by Non-Big 4.
Description
Keywords
Auditoria Qualidade da auditoria Dimensão do auditor Manipulação de resultados Accruals discricionários Auditing Audit quality Auditor size Earnings management Discretionary accruals