Bank of Korea: USD Stablecoins Pressure Local Currency

The Bank of Korea (BOK) has warned that the widespread adoption of dollar-backed stablecoins can drive down the value of local currencies. This shift creates new challenges for the central bank as it attempts to maintain stability in foreign exchange markets.

In a study titled "Stablecoin–FX Linkages: Evidence from Fiat–Stablecoin Pair Listings on a Global Exchange," the BOK examined the connections between USD stablecoin markets and conventional foreign exchange systems. The research demonstrates that the issuance and use of these digital assets can exert downward pressure on non-U.S. fiat currencies. Specifically, the study used data from a global exchange to show how fiat-stablecoin pair listings create a direct channel for USD stablecoins to impact local currency valuations.

The Digital Dollar Shift

South Korea is currently navigating a complex regulatory landscape as it balances the development of its own Central Bank Digital Currency (CBDC) with the reality of global market trends. While the BOK has explored the potential for won-based stablecoins and deposit tokens, these local efforts face stiff competition from the global dominance of USD-pegged tokens. Assets like USDT and USDC currently command the vast majority of the stablecoin market capitalization, making them the preferred vehicle for stability and trading among many users.

Implications for Monetary Policy

This trend introduces the risk of "digital dollarization," a scenario where domestic currency is bypassed in favor of a more stable global digital asset. According to the BOK, this shift could make it more difficult to control exchange rates. When users migrate toward digital dollars, the central bank's traditional monetary tools may become less effective, potentially increasing the domestic economy's vulnerability to shifts in U.S. monetary policy.

Future Outlook

As the BOK continues to monitor these linkages, the focus remains on how to integrate digital assets without compromising national monetary sovereignty. It remains to be seen how South Korea will refine its stablecoin regulations to mitigate these FX pressures. For now, the central bank's findings highlight a growing tension between the efficiency of global digital liquidity and the necessity of local currency control. The BOK's research underscores a critical pivot point for emerging markets as they grapple with the borderless nature of digital assets and the enduring hegemony of the U.S. dollar in the crypto ecosystem.