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Journals / Sosyoekonomi / 2026 / Cilt: 34 Sayı: 69

Do Sustainability Index Inclusions Impact Audit Fees? Insights from the Turkish Capital Market

Sürdürülebilirlik Endeksine Dahil Olmak Denetim Ücretlerini Etkiler Mi? Türk Sermaye Piyasasından Bulgular

Çağdaş Gündüz(PAMUKKALE ÜNİVERSİTESİ)0000-0002-2068-4951
Eymen Gürel(MUGLA SITKI KOCMAN UNIVERSITY)0000-0003-1759-4530
Pages
343–362
Publication Date
2026-07-31
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results show that the inclusion of the sustainability index does not significantly affect audit fees.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Sustainability influences corporate strategy and finance, with indices like the BIST Sustainability Index encouraging responsible investment.
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Key Findings & Data:This study investigates whether inclusion in the BIST 50 Index affects audit fees for firms from 2020 to 2024, using panel data analysis.
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Conclusion & Impact:The results show that the inclusion of the sustainability index does not significantly affect audit fees.
🔬Design:Araştırma Makalesi
📍Scope:2020 Verileri
⚙️Variables:Hisse Senedi Piyasası · Finansal Oranlar · Sürdürülebilirlik Endeksi

Abstract

Sustainability influences corporate strategy and finance, with indices like the BIST Sustainability Index encouraging responsible investment. This study investigates whether inclusion in the BIST 50 Index affects audit fees for firms from 2020 to 2024, using panel data analysis. The results show that the inclusion of the sustainability index does not significantly affect audit fees. However, firm age, total assets, and group affiliation positively affect audit fees, while financial leverage has a negative effect. These findings offer insights into how sustainability performance relates to audit fees in an emerging market context, contributing to the broader literature on corporate sustainability and financial outcomes.

Özet

Sürdürülebilirlik, kurumsal stratejiyi ve finansal kararları etkilemekte; BIST Sürdürülebilirlik Endeksi gibi endeksler ise sorumlu yatırımları teşvik etmektedir. Çalışma, 2020-2024 yılları arasında BIST 50 Endeksi’nde yer alan şirketler için sürdürülebilirlik endeksine dahil olmanın denetim ücretlerini etkileyip etkilemediğini panel veri analiziyle incelemektedir. Sonuçlar, sürdürülebilirlik endeksine dahil olmanın denetim ücretleri üzerinde anlamlı bir etkisi olmadığını göstermektedir. Ancak firma yaşı, toplam varlıklar ve grup bağlantısı denetim ücretlerini olumlu yönde etkilerken, finansal kaldıraç olumsuz etki yaratmaktadır. Bulgular, sürdürülebilirlik performansının denetim ücretleriyle nasıl ilişkilendirildiğine dair gelişmekte olan bir piyasa bağlamında önemli içgörüler sunmakta ve kurumsal sürdürülebilirlik ile finansal sonuçlara ilişkin literatüre katkı sağlamaktadır.

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Cite This Article

Gündüz, Ç., Gürel, E. (2026). Do Sustainability Index Inclusions Impact Audit Fees? Insights from the Turkish Capital Market. Sosyoekonomi, Cilt: 34 Sayı: 69, 343–362. https://doi.org/10.17233/sosyoekonomi.2026.03.16

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