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IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları

Yıl 2025, Sayı: 107, 115 - 146, 14.07.2025
https://doi.org/10.25095/mufad.1702967

Öz

Bu çalışma, Uluslararası Finansal Raporlama Standartları (IFRS) ile Amerika Birleşik Devletleri Genel Kabul Görmüş Muhasebe İlkeleri (US GAAP) arasındaki yapısal farklılıkları ve örtüşen yönleri karşılaştırmalı bir bakış açısıyla incelemektedir. Araştırma kapsamında, PwC, KPMG, EY, Deloitte ve Grant Thornton gibi önde gelen uluslararası denetim kuruluşlarının 2024 yılına ait karşılaştırma raporları temel alınmıştır. Bu doğrultuda, toplam 40 başlık altında iki sistemin benzerlikleri ve ayrıştığı noktalar analiz edilmiştir. Analiz yalnızca teknik düzeyle sınırlı kalmayıp, ilgili standartların uygulamadaki yansımaları ve finansal raporlama süreçlerine etkileri de ele alınmıştır. Ayrıca, IFRS ile US GAAP'in uyumlaştırılmasına yönelik olarak 2002 yılında imzalanan Norwalk Anlaşması tarihsel bir dönüm noktası olarak değerlendirilmiş ve bu kapsamda bugüne kadar kaydedilen ilerleme tartışılmıştır.

Kaynakça

  • AICPA. (2023). “2023 trends report”. https://www.aicpa-cima.com/professional-insights/download/2023-trends-report. (Erişim tarihi: 09.05.2025).
  • Banik, G. G. (2018). “Norwalk Agreement, 2002 and its recent updates with reference to IFRS”. 16th IRF International Conference Proceedings, 6(1) 1-3.
  • Barth, M. E., Landsman-W. R., Lang, M.,- Williams, C. (2012). “Are IFRS-based and US GAAP-based accounting amounts comparable?”. Journal of Accounting & Economics, 54(1), 68–93.
  • Buesa, A., - Población García, F. J.,- Tarancón, J. (2020). “Measuring the procyclicality of impairment accounting regimes: A comparison between IFRS 9 and US GAAP”. http://dx.doi.org/10.2139/ssrn.3526174. (Erişim tarihi:09.05.2025)
  • Cascino, S.,- Gassen, J. (2015). “What drives the comparability effect of mandatory IFRS adoption?”. Review of Accounting Studies, 20(1), 242–282.
  • Chatterjee, C. (2023). “Efficiency gains from accounting regulatory compliance”. The University of Iowa. http://dx.doi.org/10.2139/ssrn.3736028. (Erişim tarihi:09.05.2025)
  • Deloitte. (2022). “Comparing IFRS Accounting Standards and U.S. GAAP”. Deloitte https://dart.deloitte.com/USDART/home/publications/roadmap/ifrs-us-gaap-comparison. (Erişim tarihi: 09.05.2025)
  • Ernst-Young. (2024). “US GAAP versus IFRS: The basics December 2024”. https://www.ey.com/en_us/technical/accountinglink/us-gaap-versus-ifrs--the-basics-december-2024. (Erişim tarihi: 09.05.2025)
  • Grant Thornton. (2024). “Comparison between U.S. GAAP and IFRS Standards.”. https://www.grantthornton.com/content/dam/grantthornton/website/assets/content-page-files/audit/pdfs/2024/comparison-between-us-gaap-and-ifrs-standards.pdf. (Erişim tarihi: 09.05.2025)
  • Guillaume, O., & Pierre, D. (2016). “The convergence of U.S. GAAP with IFRS: A comparative analysis of principles-based and rules-based accounting standards”. Scholedge International Journal of Business Policy & Governance, 3(1), 1–8.
  • Huang, Y. (2024). “Major changes in IFRS and comparison with US GAAP”. Advances in Economics, Management and Political Sciences, 71(1), 92–99.
  • International Accounting Standards Board (IASB). (2023). https://www.ifrs.org/news-and-events/news/2024/04/ifrs-foundation-publishes-2023-annual-report/. (Erişim tarihi: 28.05.2025)
  • Kallousa, N.,-Warsame-Hussein, A. (2018). “Examining often-heard allegations: Is U.S. GAAP more rules-based than IFRS?”. SSRN. https://doi.org/10.2139/ssrn.3533455. (Erişim tarihi, 10.05.2025)
  • KPMG. (2024). “IFRS compared to US GAAP”. https://kpmg.com/kpmg-us/content/dam/kpmg/frv/pdf/2024/ifrs-us-gaap-2024-final.pdf. (Erişim tarihi, 10.05. 2025)
  • Lucchese, M., - Di Carlo, F. (2020). “Inventories accounting under US-GAAP and IFRS standards: The differences that hinder the full convergence”. International Journal of Business and Management, 15(7), 180–195.
  • Muhamad, K. W., - Saleh, S. M.W., - Van Paridon, K. (2020). “The impact of changes in accounting on the efficiency of financial institutions”. Applied Science, 29(1), 21–39.
  • Ortega, X. (2017). “A review of IFRS and US GAAP convergence history and relevant studies”. International Business Research, 10(9), 31–38.
  • Ong, A. (2018). “The failure of international accounting standards convergence: A brief history.” Review of Integrative Business and Economics Research, 7(3), 93-105.
  • Pacter, P. (2013).”What have IASB and FASB convergence efforts achieved?”. Journal of Accountancy.https://www.journalofaccountancy.com/issues/2013/feb/20127103.html. (Erişim tarihi: 10.05. 2025)
  • PwC. (2024). “About the IFRS and US GAAP: Similarities and differences guide”. PwC AccountingGuide.https://viewpoint.pwc.com/dt/us/en/pwc/accounting_guides/ifrs_and_us_gaap_sim/ifrs_and_us_gaap_sim_US/About-this-guide.html. (Erişim Tarihi:10.05.2025).
  • Saleha, A. F., -Rashid, A. M., -Suwaid, M. A. (2020). “The transition from US GAAP to IFRS: Fundamental differences and their implications on financial statements that Walmart should know”. Transition, 11(5), 314–328.
  • Sanko, H.,- Koldovskyi, A. (2017). “Comparative analysis of IFRS and US GAAP”. Financial Markets, Institutions and Risks, 1(1), 14–21.
  • Sharma, S. (2025). “Lease accounting: A comparative study of US GAAP and IFRS”. International Journal for Multidisciplinary Research (IJFMR), 7(2), 1–10.
  • United States Securities and Exchange Commission, Office of the Chief Accountant. (2011). “Work plan for the consideration of incorporating International Financial Reporting Standards into the financial reporting system for U.S. issuers: A comparison of U.S. GAAP and IFRS”.https://www.sec.gov/spotlight/globalaccountingstandards/ifrswork-plan-paper-111611-gaap.pdf. (Erişim Tarihi: 13.04.2025).
  • https://www.whalencpa.com/2023/01/what-happened-to-the-international-convergence-project/#:~:text=A%20decade%20later%2C%20informal%20meetings,reduce%20differences%20among%20those%20standards (Erişim Tarihi: 27.06.2025).

International Financial Reporting Standards: Differences Between IFRS and US GAAP

Yıl 2025, Sayı: 107, 115 - 146, 14.07.2025
https://doi.org/10.25095/mufad.1702967

Öz

This study examines the structural differences and overlapping aspects between International Financial Reporting Standards (IFRS) and US Generally Accepted Accounting Principles (US GAAP) from a comparative perspective. The research is based on the 2024 comparative reports of leading international audit firms, including PwC, KPMG, EY, Deloitte, and Grant Thornton. In this context, the similarities and differences between the two systems have been analyzed under 40 headings in total. The analysis is not limited to technical aspects but also addresses the practical implications of the relevant standards and their impact on financial reporting processes. Additionally, the Norwalk Agreement, signed in 2002, marks a historical turning point in the harmonization of IFRS and US GAAP, and its evaluation is discussed, along with the progress made to date within this framework.

Kaynakça

  • AICPA. (2023). “2023 trends report”. https://www.aicpa-cima.com/professional-insights/download/2023-trends-report. (Erişim tarihi: 09.05.2025).
  • Banik, G. G. (2018). “Norwalk Agreement, 2002 and its recent updates with reference to IFRS”. 16th IRF International Conference Proceedings, 6(1) 1-3.
  • Barth, M. E., Landsman-W. R., Lang, M.,- Williams, C. (2012). “Are IFRS-based and US GAAP-based accounting amounts comparable?”. Journal of Accounting & Economics, 54(1), 68–93.
  • Buesa, A., - Población García, F. J.,- Tarancón, J. (2020). “Measuring the procyclicality of impairment accounting regimes: A comparison between IFRS 9 and US GAAP”. http://dx.doi.org/10.2139/ssrn.3526174. (Erişim tarihi:09.05.2025)
  • Cascino, S.,- Gassen, J. (2015). “What drives the comparability effect of mandatory IFRS adoption?”. Review of Accounting Studies, 20(1), 242–282.
  • Chatterjee, C. (2023). “Efficiency gains from accounting regulatory compliance”. The University of Iowa. http://dx.doi.org/10.2139/ssrn.3736028. (Erişim tarihi:09.05.2025)
  • Deloitte. (2022). “Comparing IFRS Accounting Standards and U.S. GAAP”. Deloitte https://dart.deloitte.com/USDART/home/publications/roadmap/ifrs-us-gaap-comparison. (Erişim tarihi: 09.05.2025)
  • Ernst-Young. (2024). “US GAAP versus IFRS: The basics December 2024”. https://www.ey.com/en_us/technical/accountinglink/us-gaap-versus-ifrs--the-basics-december-2024. (Erişim tarihi: 09.05.2025)
  • Grant Thornton. (2024). “Comparison between U.S. GAAP and IFRS Standards.”. https://www.grantthornton.com/content/dam/grantthornton/website/assets/content-page-files/audit/pdfs/2024/comparison-between-us-gaap-and-ifrs-standards.pdf. (Erişim tarihi: 09.05.2025)
  • Guillaume, O., & Pierre, D. (2016). “The convergence of U.S. GAAP with IFRS: A comparative analysis of principles-based and rules-based accounting standards”. Scholedge International Journal of Business Policy & Governance, 3(1), 1–8.
  • Huang, Y. (2024). “Major changes in IFRS and comparison with US GAAP”. Advances in Economics, Management and Political Sciences, 71(1), 92–99.
  • International Accounting Standards Board (IASB). (2023). https://www.ifrs.org/news-and-events/news/2024/04/ifrs-foundation-publishes-2023-annual-report/. (Erişim tarihi: 28.05.2025)
  • Kallousa, N.,-Warsame-Hussein, A. (2018). “Examining often-heard allegations: Is U.S. GAAP more rules-based than IFRS?”. SSRN. https://doi.org/10.2139/ssrn.3533455. (Erişim tarihi, 10.05.2025)
  • KPMG. (2024). “IFRS compared to US GAAP”. https://kpmg.com/kpmg-us/content/dam/kpmg/frv/pdf/2024/ifrs-us-gaap-2024-final.pdf. (Erişim tarihi, 10.05. 2025)
  • Lucchese, M., - Di Carlo, F. (2020). “Inventories accounting under US-GAAP and IFRS standards: The differences that hinder the full convergence”. International Journal of Business and Management, 15(7), 180–195.
  • Muhamad, K. W., - Saleh, S. M.W., - Van Paridon, K. (2020). “The impact of changes in accounting on the efficiency of financial institutions”. Applied Science, 29(1), 21–39.
  • Ortega, X. (2017). “A review of IFRS and US GAAP convergence history and relevant studies”. International Business Research, 10(9), 31–38.
  • Ong, A. (2018). “The failure of international accounting standards convergence: A brief history.” Review of Integrative Business and Economics Research, 7(3), 93-105.
  • Pacter, P. (2013).”What have IASB and FASB convergence efforts achieved?”. Journal of Accountancy.https://www.journalofaccountancy.com/issues/2013/feb/20127103.html. (Erişim tarihi: 10.05. 2025)
  • PwC. (2024). “About the IFRS and US GAAP: Similarities and differences guide”. PwC AccountingGuide.https://viewpoint.pwc.com/dt/us/en/pwc/accounting_guides/ifrs_and_us_gaap_sim/ifrs_and_us_gaap_sim_US/About-this-guide.html. (Erişim Tarihi:10.05.2025).
  • Saleha, A. F., -Rashid, A. M., -Suwaid, M. A. (2020). “The transition from US GAAP to IFRS: Fundamental differences and their implications on financial statements that Walmart should know”. Transition, 11(5), 314–328.
  • Sanko, H.,- Koldovskyi, A. (2017). “Comparative analysis of IFRS and US GAAP”. Financial Markets, Institutions and Risks, 1(1), 14–21.
  • Sharma, S. (2025). “Lease accounting: A comparative study of US GAAP and IFRS”. International Journal for Multidisciplinary Research (IJFMR), 7(2), 1–10.
  • United States Securities and Exchange Commission, Office of the Chief Accountant. (2011). “Work plan for the consideration of incorporating International Financial Reporting Standards into the financial reporting system for U.S. issuers: A comparison of U.S. GAAP and IFRS”.https://www.sec.gov/spotlight/globalaccountingstandards/ifrswork-plan-paper-111611-gaap.pdf. (Erişim Tarihi: 13.04.2025).
  • https://www.whalencpa.com/2023/01/what-happened-to-the-international-convergence-project/#:~:text=A%20decade%20later%2C%20informal%20meetings,reduce%20differences%20among%20those%20standards (Erişim Tarihi: 27.06.2025).
Toplam 25 adet kaynakça vardır.

Ayrıntılar

Birincil Dil Türkçe
Konular Finansal Muhasebe, Muhasebe, Denetim ve Mali Sorumluluk (Diğer)
Bölüm Makaleler
Yazarlar

Burçak Kiziltan Işik 0000-0003-1277-679X

Yayımlanma Tarihi 14 Temmuz 2025
Gönderilme Tarihi 20 Mayıs 2025
Kabul Tarihi 7 Temmuz 2025
Yayımlandığı Sayı Yıl 2025 Sayı: 107

Kaynak Göster

APA Kiziltan Işik, B. (2025). IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları. Muhasebe ve Finansman Dergisi(107), 115-146. https://doi.org/10.25095/mufad.1702967
AMA Kiziltan Işik B. IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları. Muhasebe ve Finansman Dergisi. Temmuz 2025;(107):115-146. doi:10.25095/mufad.1702967
Chicago Kiziltan Işik, Burçak. “IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları”. Muhasebe ve Finansman Dergisi, sy. 107 (Temmuz 2025): 115-46. https://doi.org/10.25095/mufad.1702967.
EndNote Kiziltan Işik B (01 Temmuz 2025) IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları. Muhasebe ve Finansman Dergisi 107 115–146.
IEEE B. Kiziltan Işik, “IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları”, Muhasebe ve Finansman Dergisi, sy. 107, ss. 115–146, Temmuz2025, doi: 10.25095/mufad.1702967.
ISNAD Kiziltan Işik, Burçak. “IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları”. Muhasebe ve Finansman Dergisi 107 (Temmuz2025), 115-146. https://doi.org/10.25095/mufad.1702967.
JAMA Kiziltan Işik B. IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları. Muhasebe ve Finansman Dergisi. 2025;:115–146.
MLA Kiziltan Işik, Burçak. “IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları”. Muhasebe ve Finansman Dergisi, sy. 107, 2025, ss. 115-46, doi:10.25095/mufad.1702967.
Vancouver Kiziltan Işik B. IFRS ve US GAAP Arasındaki Farklılıklar: Küresel Finansal Raporlamada Uyum Arayışları. Muhasebe ve Finansman Dergisi. 2025(107):115-46.