The global trade finance ecosystem has long been encumbered by paper-intensive, manually driven processes that generate substantial inefficiencies in processing time, operational costs, and systemic risk. The letter of credit (L/C), as the most widely used instrument in international trade finance, exemplifies these structural limitations. This paper presents a theoretical analysis of the application of blockchain technology to the letter of credit process, drawing upon simulation-based evidence to evaluate the comparative performance of three distinct operational paradigms: the traditional paper-based process, the Bank Payment Obligation (BPO) mechanism, and the blockchain-enabled digital process. Through a synthesis of distributed ledger theory, transaction cost economics, and process efficiency frameworks, this paper argues that blockchain technology represents not merely an incremental improvement but a fundamental architectural transformation of trade finance operations. Simulation results derived from the AnyLogic discrete event modeling platform, processing 600,000 letter of credit transactions per paradigm, demonstrate that blockchain adoption can improve process efficiency by 94%, compared with 74% under BPO adoption. The paper further examines the theoretical underpinnings of these gains, including reductions in labor costs, courier expenditures, and archival overhead, while situating these findings within the broader discourse on digital transformation, supply chain resilience, and financial technology innovation. The study concludes with implications for banks, corporations, and regulatory authorities, and identifies directions for future theoretical and empirical investigation.

Yihan Wang. Blockchain Technology and the Digitalization of Trade Finance: A Theoretical Analysis of Letter of Credit Process Efficiency and Cost Reduction. Academic Journal of Business & Management (2026), Vol. 8, Issue 7: 27-34. https://doi.org/10.25236/AJBM.2026.080705.

[1] Paliwal, V., Chandra, S., & Sharma, S. (2020). Blockchain technology for sustainable supply chain management: A systematic literature review and a classification framework. Sustainability, 12(18), 7638.

[2] Kshetri, N. (2018). Blockchain's roles in meeting key supply chain management objectives. International Journal of Information Management, 39, 80–89.

[3] Casino, F., Dasaklis, T. K., & Patsakis, C. (2019). A systematic literature review of blockchain-based applications: Current status, classification and open issues. Telematics and Informatics, 36, 55–81.

[4] Wu, H., Li, Z., King, B., et al. (2017). A distributed ledger for supply chain physical distribution visibility. Information, 8(4), 137.

[5] Ahn, B. S. (2018). A study on the adoption of blockchain technology in international trade payment. Korea International Commercial Review, 33, 39–60.

[6] Liu, B., & Chen, Z. (2024). Technology finance innovation and network security FSS model based on blockchain technology and system assurance engineering. International Journal of System Assurance Engineering and Management, 12(9), 1–11.

[7] Carson, J. S. (2005). Introduction to modeling and simulation. Proceedings of the 37th Conference on Winter Simulation, 16–23.

[8] Al-Amaren, E. M., Al Mashhour, O. F., Aljunidi, S. Z., & Almajali, T. A. (2025). Bridging the code and law: A proposed model for smart letter of credit. EDPACS, published online 29 December 2025.

[9] Mazumder, P. T. (2025). Blockchain in trade finance: reducing fraud and improving efficiency through digital ledger technology. Digital Finance, 7, 1043–1063.