China’s sizable dollar funding gap threatens global financial stability, as tightening U.S. policy could trigger liquidity shortfalls and contagion across markets reliant on dollar‑denominated debt.
The Federal Reserve Bank of Boston’s November 2022 working paper examines China’s dollar‑funding stresses, highlighting how the pandemic‑induced market shock in March 2020 exposed a massive reliance on U.S. dollars among Chinese banks and non‑financial firms. While most analysts focus on domestic U.S. liquidity, the study shows that a sizable share of China’s external debt—about 37 % of its cross‑border liabilities—was dollar‑denominated, creating a sizable funding gap that the country could not easily bridge.
The paper uses the cross‑currency basis as a barometer of stress. In March 2020 the USD/KRW, USD/CNY and USD/CNH bases turned sharply negative, indicating that Chinese institutions were forced to obtain synthetic dollars at rates far above market borrowing costs. Without a formal dollar swap line, China relied on ad‑hoc measures such as Korean‑bank FX swaps and the Bank of Korea’s dollar auctions, which only partially alleviated the squeeze. BIS data reveal a $47‑$71 billion on‑balance‑sheet dollar funding gap—roughly 20 % of China’s external debt—mirroring gaps seen in Japan and Canada.
Notable examples include Korean banks converting won into dollars via FX derivatives and the Bank of Korea’s emergency dollar auction, which temporarily narrowed the USD/KRW basis. The study also cites research showing that the four largest Chinese banks shifted from a positive to a negative dollar‑funding position between 2016 and 2018, underscoring a structural mismatch between dollar assets and liabilities. These dynamics are reflected in the persistent negative USD/CNY and USD/CNH bases that recovered more slowly than peers.
The implications are clear: a large, ill‑served dollar funding gap creates rollover risk for Chinese banks, especially as the Federal Reserve tightens monetary policy. Without direct access to dollar liquidity, stress in China could spill over to global markets, amplifying contagion risk and prompting calls for coordinated swap lines or alternative financing mechanisms.
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