Iran's economy is one of the sectors that always faces challenges in the implementation of policies and policies. Export financing in general and buyer's credit scheme in particular is one of the tools for implementing the policies formulated in this field, which increases the competitive power of Iranian exporters by granting facilities to foreign buyers. However, this plan could not fully achieve its goals. Therefore, the purpose of this research is to present a new model for the implementation of export financing policies in the form of buyer's credit, which combines two models, Calista and Matland, while paying attention to internal and external variables, the amount of ambiguity and conflict in the local environment and the political and economic conditions of Iran. The current research is of qualitative type and thematic analysis method, which was conducted with in-depth and targeted interviews with 13 experts and executives in the field of export financing. The sampling method was purposeful and snowball, and data coding and analysis was done by MAXQDA software. Then, the network of themes (basic themes, organizing themes, and comprehensive themes) was identified and the model of export financing policy implementation in the form of buyer credit was presented by combining the two policy implementation models of Calista and Matland.