DENETİM GÖRÜŞÜ VE ROTASYONUN DENETİM ÜCRETİNE ETKİSİ: BİST'TE BİR ARAŞTIRMA

Öz

Yirmi birinci yüzyılın başlarında önemli finansal bilgilerin gizlenmesi ile kar yönetimi davranışının sonucunda yaşanan muhasebe ve denetim skandalları, doğru ve güvenilir finansal raporların finansal bilgi kullanıcıları için en önemli bilgi kaynağı olduğunu ve denetim kalitesinin önemini göstermiştir. Literatür incelendiğinde denetim kalitesine yönelik birçok göstergenin yer aldığı ve bu göstergelerin bazılarının ise denetim görüşü, denetlenen şirketin büyüklüğü, denetim firması rotasyonu ve denetim ücreti gibi unsurlarından oluştuğu görülmektedir. Bu çalışmanın amacı Borsa İstanbul İmalat Sektöründe yer alan şirketlere ait bağımsız denetim raporlarında yer alan denetim görüşü ile denetim firması rotasyonunun denetim kalitesi göstergelerinden biri olan denetim ücreti üzerindeki etkilerini araştırmaktır. Çalışmada denetim ücreti bağımlı değişken; denetim görüşü ile denetim firması rotasyonu ise bağımsız değişkenler olarak kullanılmıştır. Analizlere kontrol değişkenleri olarak denetlenen şirketin büyüklüğü, şirket yaşı, kaldıraç oranı ve aktif karlılık oranı dahil edilmiştir. Çalışmanın analiz kısmında kullanılan ve 515 gözlemden oluşan veri seti Borsa İstanbul İmalat Sektöründe yer alan 129 şirketin 2020-2023 yılları arasındaki faaliyet ve finansal raporlarından elde edilmiştir. Yapılan panel veri analizi sonucunda denetim ücreti üzerinde mevcut denetim görüşü ile önceki denetim görüşünün istatistiki olarak anlamlı ve negatif yönde etkisi olduğu; denetim firması rotasyonunun etkisinin ise istatistiki olarak anlamlı olmadığı sonucuna ulaşılmıştır. Çalışmanın bulguları ayrıca denetim ücreti üzerinde denetlenen şirket büyüklüğü ve aktif karlılık oranının (ROA) istatistiki olarak anlamlı ve pozitif yönde; kaldıraç oranı ve şirket yaşının ise istatistiki olarak anlamlı ve negatif yönde etkilerinin olduğunu ortaya koymaktadır.

Anahtar Kelimeler

• Denetim Görüşü
• Denetim Firması Rotasyonu
• Denetim Ücreti
• BİST İmalat Sektörü

THE IMPACT OF AUDIT OPINION AND ROTATION ON AUDIT FEES: A STUDY ON BIST

Öz

The accounting and auditing scandals in the early twenty-first century as a result of the concealment of important financial information and profit management behavior have shown that accurate and reliable financial reports are the most important source of information for financial information users and the importance of audit quality. A review of the literature reveals that there are many indicators of audit quality and some of these indicators include audit opinion, size of the audited company, audit firm rotation and audit fee. The purpose of this study is to investigate the effects of audit opinion and audit firm rotation in the audit reports of companies in the Borsa Istanbul Manufacturing Sector on audit fee, which is one of the audit quality indicators. In the study, audit fee is used as the dependent variable and audit opinions and audit firm rotation are used as independent variables. The size of the audited company, company age, leverage ratio and return on assets ratio are included in the analysis as control variables. The data set used in the analysis part of the study, consisting of 515 observations, was obtained from the annual and financial reports of 129 companies in the Borsa Istanbul Manufacturing Sector between years 2020 and 2023. As a result of the panel data analysis, it is concluded that current audit opinion and prior audit opinion have a statistically significant and negative effect on audit fees, while the effect of audit firm rotation is not statistically significant. The findings of the study also reveal that audited company size and return on assets (ROA) have statistically significant and positive effects on audit fees, while leverage and company age have statistically significant and negative effects on audit fees.

Anahtar Kelimeler

• Audit opinion
• audit firm rotation
• audit fee
• BİST manufacturing sector

Kaynakça

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