Meng Hao, Ren Shuo, Tang Yuxin
Studies of International Finance. 2026, 0(10): 94-106.
Against the backdrop of China's steady advancement toward high-level opening-up, bilateral relations have evolved from external environmental factors into a critical institutional force reshaping the global monetary landscape and strengthening the RMB's role as an international currency anchor. This study investigates the impact and underlying mechanisms of bilateral relations on the RMB anchor effect by employing a Heckman two-stage model based on a global sample of 126 countries. The research findings are as follows. Firstly, enhanced bilateral relations not only increase the probability that sample economies adopt the RMB as an anchor currency, but also substantially raise the weight of the RMB in their currency baskets, thereby reinforcing its currency anchor effect. Secondly, the positive development of bilateral relations facilitates the realization of the RMB anchor effect by increasing bilateral trade shares, enhancing China's investment embeddedness, and expanding the scale of RMB currency swap arrangements. Thirdly, the effectiveness of bilateral relations in promoting the RMB anchor effect exhibits significant heterogeneity, depending on direction of political mutual trust, host-country income levels, cultural differences, and geographical distance. The influence of bilateral relations on both RMB adoption and anchoring intensity is more pronounced among economies that actively initiate engagement with China, low-and middle-income countries, and countries geographically closer to China. In countries characterized by smaller cultural differences, bilateral relations exert a stronger influence on the choice of the RMB as an anchor currency. Conversely, in countries with greater cultural distance, although bilateral relations have a relatively limited effect on the initial adoption decision, once the RMB is adopted, closer bilateral relations activate a trust-compensation mechanism that significantly contributes to increasing the RMB's anchoring weight.
The potential marginal contributions of this study are as follows. Firstly, by integrating political and non-political events into a unified analytical framework, the paper comprehensively measures bilateral relations thereby enriching existing methods for assessing bilateral relations. Secondly, previous studies on the determinants of currency anchor effects have primarily focused on economic and financial fundamentals as well as external shocks, this study identifies bilateral relations as an important institutional determinant influencing both the breadth and depth of the RMB anchor effect, thereby extending the literature on the drivers of monetary anchor effects. Thirdly, this study further identifies trade relations, investment intensity, and monetary cooperation as key transmission mechanisms through which bilateral relations shape the effectiveness of the RMB anchor effect.
In order to accelerate the process of RMB internationalization, this paper puts forward the following policy recommendations. Firstly, policymakers should continuously strengthen global partnerships and deepen bilateral and multilateral cooperation and dialogue mechanisms. Secondly, efforts should be made to optimize bilateral trade and investment cooperation frameworks, strengthen the foundation for cross-border RMB usage. Thirdly, improving currency cooperation arrangements and RMB swap mechanisms, and accelerating the upgrading of the Cross-border Interbank Payment System(CIPS). Fourthly, strengthen infrastructure for RMB internationalization, insist orderly opening of the capital account, and continuously refine the RMB exchange rate formation mechanism thus reinforcing the support system for its anchor effect.